DE102020201694A1 - Adjusting device for an actuator pin of a machine part with a sliding groove and camshaft adjusting device with such an adjusting device - Google Patents

Abstract

The invention relates to an adjusting device (10) with a drive unit (12) for an actuator pin (14a, 14b) of a machine part (36) with a sliding groove (38a, 38b), the drive unit (12) having at least one anchor element (16a, 16b) and at least one coil element (18a, 18b) surrounding the armature element (16a, 16b), which are arranged such that the armature element (16a, 16b) can be driven in an axial direction by energizing the coil element (18a, 18b), wherein the Actuator pin (14a, 14b) is connected to the anchor element (16a, 16b), the actuator pin (14a, 14b) in a variant a) having at least one recess (22a, 22a ', 22a ", 22b, 22b', 22b ' ') and in a housing element (20) immediately surrounding the actuator pin (14a, 14b) at least one latching element (24a, 24b) is arranged in such a way that the latching element (24a, 24b) is in a nominal relative position between the actuator pin (14a, 14b) ) and housing element (20) in the recess (22a, 22a ', 22a' ', 22b, 22b ', 22b' ') can intervene in order to fix the actuator pin (14a, 14b) in the desired relative position in a non-positive manner. The invention also relates to two further variants b) and c) and a camshaft adjusting device with an adjusting device (10).

Description

The invention relates to an adjusting device for an actuator pin of a machine part with a sliding groove, in particular for adjusting a cam along a camshaft, as well as a camshaft adjusting device with such an adjusting device.

Actuating devices for controlling a variable-stroke valve drive of an internal combustion engine are known from practice. A machine part designed as a cam piece has adjacent cams, the different cam contours or opening profiles of which are selectively transferred to a gas exchange valve by means of a cam follower. In order to set these opening profiles as a function of the operating point, the cam piece is arranged on a carrier shaft (camshaft) so as to be non-rotatable but displaceable in the axial direction. To move the cam piece and to activate an opening path as required, the cam piece has two spiral-shaped and counter-rotating displacement grooves. The displacement is brought about by the end sections of actuator pins which alternately engage in the displacement grooves. The displacement grooves have an axial course in such a way that the cam piece moves in cooperation with the associated, engaged actuator pin from one cam position to another. The radial course of a displacement groove is usually designed so that it becomes flatter towards the end of the displacement process and moves the engaged actuator pin from its extended working position back into a retracted holding position.

Out EP 2 352 910 B1 An electromagnetic camshaft adjusting device is known with an armature unit which can be driven along an axial direction in response to a current supply to a stationary coil unit and which is designed to interact with an actuating unit which effects a camshaft adjustment of an internal combustion engine. In this camshaft adjusting device, permanent magnets, referred to as permanent magnet means, are provided on and / or in the armature unit and / or the actuating unit, and the coil unit and the armature unit are at least partially accommodated in a housing or carrier unit. The carrier unit is assigned to stationary magnetic field detection means for preferably contactless magnetic interaction with the permanent magnets and is designed in such a way that an axial position of the armature unit and / or the actuating unit can be determined by evaluating a magnetic field detection means when the coil unit is energized or not.

Out DE 10 2007 024 600 A1 an adjusting device with an actuator pin that can be moved between a retracted holding position and an extended working position for adjusting a machine part is known. In this adjusting device, the displacement groove is designed in such a way that it moves the actuator pin back into its holding position. The actuating device has a controllable holding and releasing device for holding the actuator pin in the holding position and for releasing the actuator pin in the release position, which uses the clamping force of a spring means that is effective in the opposite direction, such that the actuator pin either in the extension direction or in the opposite direction force is applied in the retraction direction.

With the devices known from the prior art, bistable positions of the actuator pin are usually implemented.

The invention is based on the object of providing an adjusting device for an actuator pin of a machine part with a sliding groove as well as a camshaft adjusting device with such an adjusting device, which provides an alternative, structurally simple and thus inexpensive to implement solution to an actuator pin in a target position to fix.

The object is achieved according to the invention with the features of the independent claims. Further practical embodiments and advantages of the invention are described in connection with the dependent claims.

An adjusting device according to the invention comprises a drive unit for an actuator pin of a machine part with a sliding groove. The machine part is in particular a cam element which is arranged axially displaceably on a camshaft. The drive unit has at least one armature element and at least one coil element surrounding the armature element, which are arranged such that the armature element can be driven in an axial direction by energizing the coil element. The actuator pin is connected to the anchor element. The actuator pin and the armature element are in particular firmly connected to one another, with a fixed connection also being understood to be a magnetic connection. With the axial movement of the armature element, the actuator pin connected to it is correspondingly moved in the axial direction at the same time, in particular between a maximally retracted end position and a maximally extended end position.

Variants a), b) and c) explained below are possible, which can be implemented individually or in combination:

Option A)

The actuator pin has at least one recess. Correspondingly, at least one latching element is arranged in a housing element immediately surrounding the actuator pin such that the latching element can engage in the recess in a desired relative position between the actuator pin and the housing element in order to positively fix the actuator pin in the desired relative position.

Variant b)

The actuator pin has at least one latching element, and at least one recess is arranged in a housing element immediately surrounding the actuator pin such that the latching element can engage in the recess in a desired relative position between the actuator pin and the housing element in order to force-fit the actuator pin in the desired relative position to fix.

Variant b) can in particular be implemented in that a resilient component is formed or arranged on the actuator pin, for example a spring clip, a resilient sheet metal or some other suitable resilient element that is provided with one or more suitably formed depressions on the housing element surrounding the actuator pin cooperates to bring about a force-fit fixing of the actuator pin in a target relative position (or several target relative positions).

In other words, it concerns with variant b) and a reversal of the operating principle according to variant a). This can be implemented as an alternative or in addition.

Variant c)

A relatively movable control element is provided which can be moved between a fixing position and a displacement position and is arranged in such a way that the actuator pin can be positively fixed in at least one nominal relative position by moving the control element into the fixing position.

Regarding variants a) and / or b) it should be noted that the fixing of the actuator pin in at least one nominal relative position by means of a latching element, which can be part of the actuator pin and / or part of a housing element bypassing the actuator pin, and a corresponding recess represents a particularly simple mechanical solution. A corresponding adjusting device can thus be implemented in a particularly cost-effective manner.

Alternatively or in addition to this, it is possible to enable the actuator pin to be fixed in a form-fitting manner by means of a control element that can be moved between a fixing position and a displacement position. In this case, a pneumatic, hydraulic, magnetic, electrical or electromechanical drive or another suitable drive can in particular be provided as an actuator for the control element for moving between the fixing position and the shifting position. It is at the discretion of the person skilled in the art to select and implement a drive suitable for the respective application as an actuator. Regardless of the type of actuator of the control element, a form-fitting fixation can in particular ensure increased functional reliability, especially after a corresponding actuating device has been in operation for a longer period of time.

As will be explained in the following, the specified relative position in which the actuator pin can be fixed in a force-fitting and / or form-fitting manner can in particular be an end position of the actuator pin, ie a position in which the actuator pin is completely ( ie maximally) extended or fully (ie maximally) retracted in the axial direction. As an alternative or in addition, this nominal relative position can be an intermediate position. The possibility of fixing in an intermediate position represents a great advantage of the adjusting device according to the invention. As will also be explained in more detail below, the adjusting device according to the invention also offers the advantage that fixing the actuator pin with relatively expensive magnetic elements can be dispensed with.

The fixation brought about by the latching element - preferably exclusively non-positive, but alternatively or additionally also positive - can be released again in various ways. On the one hand, in the case of an exclusively frictional fixation, the actuator pin can experience such a great force in the axial direction through the radial contour of a sliding groove that the actuator pin is moved in the direction of the retracted position and the latching element is then released from the recess. On the other hand, in the case of an exclusively frictional fixation, the energization of the coil element can cause a movement of the armature element and thus of the actuator pin, which also leads to the detent element being released from the recess. As an alternative or in addition, a latching element, which may also be fixable in a form-fitting manner, can be provided with a control which, if necessary, brings the latching element into and / or out of engagement.

In a practical embodiment of an actuating device according to the invention, the latching element and / or the control element is arranged in the housing element in a prestressed manner in the direction of the actuator pin by means of a clamping element. By means of the tensioning element, a defined pretensioning force is exerted on the latching element and / or the control element, which, in the event of an effect on a latching element, enables an effective non-positive latching but also a release of the fixation as described above. In the case of an effect on a control element, the pretensioning force supports the drive of the control element in a certain direction or can even be provided as the exclusive driving force.

In particular, the latching element and / or the control element has, on the side facing in the direction of the actuator pin, an outwardly curved outer contour which interacts with a complementarily shaped inner contour formed in the actuator pin. In the case of two co-operating curved contours, it is a question of geometrically simple contours which are easy to produce. In addition, a form-fitting fixation can be realized in this way, which at the same time enables the latching element and / or the control element to engage and disengage in the recess with as little friction and jerk-free as possible.

The tensioning element and / or the control element is particularly advantageous, in particular a spring and / or the latching element is a ball acted upon by the tensioning element. Both elements are inexpensive elements that are available as standard components.

In a further practical embodiment of an actuating device according to the invention, two actuator pins are mounted in a housing. In each case a latching element interacting with the actuator pin and / or the control element is pretensioned in the direction of the respective actuator pin by means of a clamping element arranged between them. An adjusting device with two actuator pins is used in particular in connection with a cam piece, which is explained in more detail below, with two spiral-shaped displacement grooves. The number of components can then be reduced by using a jointly used clamping element. In particular, the two actuator pins are arranged adjacent and parallel to one another in the housing, and the tensioning element extends transversely between the two actuator pins. In particular, an opening or bore is formed in the housing, in which the clamping element is received. A latching element and / or a control element is then arranged at the ends of the tensioning element in order to interact with the corresponding actuator pin.

Regardless of the embodiment described above, reference is made once again to the fact that - especially if a particularly high level of security is required and mechanical interactions between two locking elements and / or control elements acted upon by a clamping element - one clamping element is provided for only one locking element or one control element is. This has the further advantage that any damage that could occur due to failure or fatigue of the clamping element after a long operating phase only affects one actuator pin and is thus limited to a minimum.

The adjusting device is particularly flexible if, in particular, several recesses for different nominal relative positions are formed at different positions of the actuator pin or housing element. In particular, two or three recesses are formed on an actuator pin. In particular, the recesses are designed in such a way that they all interact with only one latching element. The nominal relative positions can be a completely retracted end position of the actuator pin, a completely extended end position of the actuator pin and / or an intermediate position of the actuator pin.

If all the nominal relative positions provided for the adjusting device are fixed by the latching action of the latching element, permanent magnets known from the prior art for fixing the actuator pin in a completely retracted end position can be dispensed with. As a result, such an adjusting device has a particularly low weight. Furthermore, there is no accumulation of metallic wear parts on the permanent magnets.

However, it can also be provided that a permanent magnet is firmly connected to the armature element in such a way that the actuator pin can be driven in a fully retracted and in a fully extended direction, the at least one recess for fixing the actuator pin being formed in an intermediate position. In this case, the permanent magnet serves to connect the actuator pin and the armature element.

Embodiments which have the possibility of fixing the actuator pin in an intermediate position are particularly advantageous if two crossing sliding grooves are formed on a cam piece and the cam piece therefore has only a small width extending in the axial direction. If an actuator pin is in engagement with that of the two sliding grooves which has a smaller depth, so there is a risk at the intersection that the actuator pin will get into the sliding groove with the greater depth. In order to prevent this, in solutions known from practice, the coil element continued to be energized and the depth of the sliding groove was provided with a lesser depth with a jump in depth. The current is supplied in the embodiments known from practice in order to prevent an axial return movement from taking place. And the depth jump is necessary to ensure that the slight extension of the actuator pin at the intersection point caused by the current supply does not lead to a strike while passing the intersection point at the continuation area of the less deep displacement groove. The jump in depth is associated with the risk that an actuator pin, which is located just behind the intersection in the middle sliding groove, will "hit" the opposite edge when the camshaft is turned back. In embodiments known from practice, this can result in damage to the actuator pin. Furthermore, the actuator pin was previously designed as a truncated cone, ie trapezoidal in cross-section, and correspondingly the side walls of the sliding groove were formed at an angle to hold the actuator pin positively in the middle sliding groove and secure against axial displacement back into the retracted position. The production of this inclined arrangement is associated with a complex and cost-intensive production.

With an embodiment of the adjusting device according to the invention, which enables the fixation in an intermediate position, the disadvantages mentioned above can be avoided. The actuator pin engaging in the shallower sliding groove can be fixed in the intermediate position in the area of the crossing point by means of the locking element and thus maintains its axial position. The depth of the sliding groove can now be designed to be constant in front of and behind the crossing point. As a result, on the one hand, the additional machining of the groove is saved and the risk of collision explained above is avoided. The actuator pin can furthermore have a rectangular cross section, so that the manufacturing costs are lower compared to solutions with a trapezoidal cross section.

The invention also relates to a camshaft adjusting device with an adjusting device as described above. A cam piece of a variable-lift valve drive of an internal combustion engine is provided as the machine part on a carrier shaft, in particular a camshaft, in a rotationally fixed and longitudinally displaceable manner. At least two spiral-shaped sliding grooves of variable depth are formed on the cam piece. With regard to the advantages of such a camshaft adjusting device, reference is made to the above description. The depth of the sliding grooves varies in particular such that they become shallower towards the end of a sliding process in order to bring the actuator pin into a maximally retracted end position.

In a practical embodiment of a camshaft adjusting device according to the invention, the sliding grooves are designed to cross one another on the cam piece. Crossing sliding grooves require less installation space than two sliding grooves running in separate sections.

In particular, the sliding grooves have different maximum depths. In particular in the case of intersecting sliding grooves with different depths, the camshaft adjusting device has an adjusting device which enables the actuator pins to be fixed in an intermediate position. The actuator pin is fixed in the intermediate position in particular in that the actuator pin is moved into an extended position in the axial direction by the interaction of the coil element and the armature element. The axial extension movement is then stopped by the depth of the sliding groove in front of the crossing point, so that the locking element engages in the recess formed on the actuator pin. The energization of the coil element can then be ended.

• 1 eine erste Ausführungsform einer erfindungsgemäßen Stellvorrichtung in einer schematischen Darstellung,
• 2 eine zweite Ausführungsform einer erfindungsgemäßen Stellvorrichtung in einer schematischen Darstellung,
• 3 eine dritte Ausführungsform einer erfindungsgemäßen Stellvorrichtung in einer schematischen Darstellung,
• 4 ein Abschnitt eines Nockenstücks mit zwei sich kreuzenden Verschiebenuten in einer Seitenansicht,
• 5 das Tiefenprofil der Verschiebenuten aus 4,
• 6 das Verschiebeprofil der Verschiebenuten aus 4, und
• 7 das Nockenstück aus 4 und ein Schnitt gemäß Linie VII-VII.

Further practical embodiments of the invention are described below in connection with the drawings. Show it:

• 1 a first embodiment of an adjusting device according to the invention in a schematic representation,
• 2 a second embodiment of an adjusting device according to the invention in a schematic representation,
• 3 a third embodiment of an adjusting device according to the invention in a schematic representation,
• 4th a section of a cam piece with two crossing sliding grooves in a side view,
• 5 the depth profile of the sliding grooves 4th ,
• 6th the sliding profile of the sliding grooves 4th , and
• 7th the cam piece off 4th and a section along line VII-VII.

In 1 is an adjusting device 10 shown according to variant a). The adjusting device 10 includes a drive unit 12th and two actuator pins 14a , 14b .

The adjusting device 10 in the present case has two anchor elements 16a , 16b on. The anchor elements 16a , 16b are each from a coil element 18a , 18b surround. When one of the coil elements is energized 18a , 18b is an axial displacement of the corresponding anchor element 16a , 16b in the direction of arrow A.

One actuator pin each 14a , 14b is in the present case fixed to one of the two anchor elements 16a , 16b connected so that with an axial displacement of an anchor element 16a , 16b in the direction of arrow A also an axial displacement of the actuator pin connected therewith 14a , 14b is effected in the direction of arrow A.

The two actuator pins 14a , 14b are also in a housing element serving as a guide housing 20th arranged and extend parallel to each other.

Both actuator pins 14a , 14b In this first embodiment, each have two arched hemispherical recesses which are spaced apart from one another in the axial direction 22a , 22a 'and 22b, 22b'. To snap into the recesses 22a In the present case, 22a 'is a latching element 24a in the form of a ball 30a intended. For the recesses 22b , 22b 'is a locking element 24b in the form of a ball 30b intended. In addition, is between the locking elements 24a , 24b one as a clamping element 26th serving pen 28 arranged. By the pen 28 become the two balls 30a , 30b against the outer contour of the respective actuator pins 14a , 14b biased. The spring 28 is here in a perpendicular to the actuator pins 14a , 14b running bore 32 in the housing element 20th arranged.

There is an actuator pin 14a , 14b with one of the recesses 22a , 22a ', 22b, 22b' at the level of the respective ball 30a , 30b so the ball snaps 30a , 30b in the respective recess 22a , 22a ', 22b, 22b' and the actuator pin 14a , 14b is opposite the housing element 20th non-positively fixed in this target relative position. There are for each actuator pin 14a , 14b due to the two recesses 22a , 22a ', 22b, 22b' formed two nominal relative positions.

The nominal relative positions here are a fully retracted and a fully extended end position of the actuator pins 14a , 14b . As in 1 can be seen are the two actuator pins 14a , 14b extended to different extents and in the position shown is the left actuator pin 14a in a fully extended position and in engagement with a sliding groove (not shown) and the right actuator pin 14b in a fully retracted position and not in engagement with a sliding groove (not shown).

In the following, the same reference numerals are used to describe further embodiments for identical or at least functionally identical components as for the description of the first embodiment.

The second, in 2 Shown embodiment of an adjusting device 10 also has a drive unit 12th with two anchor elements 16a , 16b , corresponding coil elements 18a , 18b and with the respective anchor elements 16a , 16b connected actuator pins 14a , 14b on. At the ends of the anchor elements 16a , 16b are permanent magnets 34a , 34b arranged, which for connecting the anchor elements 16a , 16b with the corresponding actuator pin 14a , 14b serve.

In the present case, the actuator pins point 14a , 14b only one recess at a time 22a , 22b on, so that the locking element 24a , 24b only serves to fix a single target relative position. This is the nominal relative position and an intermediate position between a fully extended and a fully retracted position of the actuator pin 14a , 14b . The actuator pins are in each of the fully retracted and fully extended positions 14a , 14b by means of the permanent magnets 34a , 34b fixed.

In 3 a third embodiment is shown. In contrast to the in 2 The second embodiment shown has this adjusting device 10 no permanent magnets to fix the actuator pins 14a , 14b in their end position. In contrast to the first embodiment, the actuator pins 14a , 14b here three recesses each 22a , 22a '22a'', 22b, 22b', 22b '', in which the locking element 24a , 24b can click into place if necessary.

Is the actuator pin 14a , 14b fixed in a nominal relative position in which the corresponding latching element 24a , 24b in the top recess 22a , 22b engages, this is the maximum extended end position of the actuator pin 14a , 14b . Correspondingly, the lowermost recess 22a ″, 22b ″ is provided for fixation in a maximally retracted end position and the middle recess 22a ', 22b' for fixation in an intermediate position.

How the in 2 and in 3 actuating devices shown 10 will be used in the following in connection with the 4th until 6th explained.

In 4th is a portion of a cam member 36 shown in which two Moving grooves 38a , 38b are trained. The two sliding grooves 38a , 38b in the present case extend spirally over the circumference of the cam element 36 and are arranged to cross each other.

The depth of the respective sliding grooves 38a , 38b is in 5 Shown plotted over the circumferential angle. It can be seen that the sliding groove 38a has a shallower depth over a large part of the circumference than the displacement groove 38b . The depth of the two sliding grooves 38a , 38b varies and decreases with smaller and larger circumferential angles. This results in an axial displacement of the respective actuator pins at the end of the displacement process 14a , 14b causes in the direction of the retracted end position.

In 6th the shift over the circumferential angle is shown. It can be seen here that the starting points of the shifting processes of the individual shifting grooves 38a , 38b and the corresponding endpoints differ from each other. The shifting process corresponds to the shifting groove 38a begins and ends before the shifting process corresponding to the shifting groove 38b . This is the crossing point 40 of the two sliding grooves 38a , 38b moved down.

7th shows a cross section through the crossing point 40 . It can be seen here that the sliding groove 38a has a shallower depth and at the intersection point 40 through the deeper sliding groove 38b is interrupted. When the cam element is shifted 36 with one in the shallower sliding groove 38a engaged actuator pin 14a , becomes the actuator pin 14a according to the second and third embodiment in the intermediate position frictionally by means of the latching element 24a , 24b fixed and thus maintains its axial position. The depth of the sliding groove is corresponding 38a in front of and behind the crossing point 40 same what by the dashed line 42 is indicated. The actuator pin 14a is also rectangular in cross-section.

The features of the invention disclosed in the present description, in the drawings and in the claims can be essential both individually and in any combination for the implementation of the invention in its various embodiments. The invention can be varied within the scope of the claims and taking into account the knowledge of the competent person skilled in the art.

In connection with variant b) of the invention, reference is made to the fact that in order to implement such a variant, in particular recesses, for example semicircular recesses analogous to the recesses 22a , 22a 'on the actuator pin 14a in 1 on a housing element 20th can be formed. With these recesses, for example, instead of the recesses 22a , 22a 'cooperate provided resilient element, which on the actuator pin 14a is formed or arranged, for example a spring clip, which is attached to the actuator pin 14a is attached. The kinematics of the actuator pin 14a can in this case be identical or almost identical, because it is only a matter of a reversal of the operating principle. This variant b) is not shown in the figures.

Alternatively or in addition to this - and also not shown in the figures - is variant c), according to which instead of or in addition to a latching element 24a and a corresponding depression 22a (or several such depressions) a relatively movable control element (not shown) is provided, which enables a form-fitting fixation of an actuator pin.

List of reference symbols

10

Adjusting device

12th

Drive unit

14a, 14b

Actuator pin

16a, 16b

Anchor element

18a, 18b

Coil element

20th

Housing element

22a, 22b,

Recess

24a, 24b

Locking element

26th

Clamping element

28

feather

30a, 30b

bullet

32

drilling

34a, 34b

Permanent magnet

36

Cam element

38a, 38b

Sliding groove

40

Crossing point

42

dashed line

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• EP 2352910 B1 [0003]
• DE 102007024600 A1 [0004]

Claims (10)

Adjusting device with a drive unit (12) for an actuator pin (14a, 14b) of a machine part (36) with a sliding groove (38a, 38b), the drive unit (12) having at least one anchor element (16a, 16b) and at least one anchor element (16a , 16b) surrounding coil element (18a, 18b), which are arranged such that the armature element (16a, 16b) can be driven in an axial direction by energizing the coil element (18a, 18b), the actuator pin (14a, 14b) with the anchor element (16a, 16b) is connected, characterized in that a) the actuator pin (14a, 14b) has at least one recess (22a, 22a ', 22a ", 22b, 22b', 22b") and in one of the Actuator pin (14a, 14b) directly surrounding the housing element (20) at least one latching element (24a, 24b) is arranged such that the latching element (24a, 24b) in a target relative position between the actuator pin (14a, 14b) and the housing element (20) in the recess (22a, 22a ', 22a ", 22b, 22b', 22b") engages can be used to fix the actuator pin (14a, 14b) in the desired relative position in a non-positive manner, and / or b) the actuator pin (14a, 14b) has at least one latching element and in a housing element ( 20) at least one recess is arranged in such a way that the latching element (24a, 24b) in a desired relative position between the actuator pin (14a, 14b) and the housing element (20) into the recess (22a, 22a ', 22a ", 22b, 22b ', 22b'') can intervene in order to fix the actuator pin (14a, 14b) in the desired relative position in a non-positive manner, and / or c) a relatively movable control element is provided, which can be moved between a fixing position and a displacement position and is arranged in such a way that that by moving the control element into the fixing position, the actuator pin (14a, 14b) can be fixed in a form-fitting manner in at least one nominal relative position. Adjusting device according to the preceding claim, characterized in that the latching element (24a, 24b) and / or the control element in the housing element (20) is arranged preloaded in the direction of the actuator pin (14a, 14b) by means of a clamping element (26). Adjusting device according to one of the preceding claims, characterized in that the latching element (24a, 24b) and / or the control element has an outwardly curved outer contour on the side facing in the direction of the actuator pin (14a, 14b), which has a complementary shape in which Actuator pin (14a, 14b) formed inner contour cooperates. Adjusting device according to one of the preceding claims, characterized in that the tensioning element (26) is a spring (28) and / or the latching element (24a, 24b) and / or the control element is a ball (30a, 30b acted upon by the tensioning element (26) ) is. Adjusting device according to one of the preceding claims, characterized in that two actuator pins (14a, 14b) are mounted in a housing (20) and each one with the actuator pin (14a, 14b) interacting locking element (24a, 24b) and / or control element by means of a tensioning element (26) arranged therebetween is pretensioned in the direction of the respective actuator pin (14a, 14b). Adjusting device according to one of the preceding claims, characterized in that several recesses (22a, 22a ', 22a'', 22b, 22b', 22b '') for different nominal relative positions at different positions of the actuator pin (14a, 14b) or housing element ( 20) are formed. Adjusting device according to one of the preceding claims, characterized in that a permanent magnet (34a, 34b) is firmly connected to the armature element (16a, 16b) in such a way that the actuator pin (14a, 14b) can be driven in a fully retracted and in a fully extended direction is, wherein the at least one recess (22a, 22a ', 22a ", 22b, 22b', 22b") is designed for fixing the actuator pin (14a, 14b) in an intermediate position. Camshaft adjusting device with an adjusting device (10) according to one of the Claims 1 until 7th , characterized in that a cam element (36) of a variable-lift valve drive of an internal combustion engine, which is arranged on a support shaft in a rotationally fixed and longitudinally displaceable manner, is provided as the machine part, with at least two spiral-shaped displacement grooves (38a, 38b) extending over the circumference on the cam element (36) variable depth are formed. Camshaft adjusting device according to the preceding claim, characterized in that the sliding grooves (38a, 38b) are designed to cross one another on the cam element (36). Camshaft adjusting device according to one of the two preceding claims, characterized in that the sliding grooves (38a, 38b) have different maximum depths.

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