EP3685023A1

EP3685023A1 - Adjusting device with a sealed guide cylinder

Info

Publication number: EP3685023A1
Application number: EP18756199.8A
Authority: EP
Inventors: Tsuneo Suzuki; Wolfram Maiwald; Harald Burkart; Michael TISCHTSCHENKO; Andreas Kammerer
Original assignee: Kendrion Villingen GmbH
Current assignee: Kendrion Villingen GmbH
Priority date: 2017-09-21
Filing date: 2018-08-14
Publication date: 2020-07-29
Also published as: US20200308994A1; DE102017121947A1; US10941678B2; CN111094707A; WO2019057401A1

Abstract

The invention relates to an adjusting device (1) having at least one tappet assembly (3, 6). The at least one tappet assembly (3, 6) comprises a tappet (31, 61), at least one guide cylinder (34, 64), and a pole core (44, 74). The tappet (31, 61) is arranged in the guide cylinder (34, 64) in a movable manner along a longitudinal axis (30, 60), and a non-magnetic connection socket (43, 73) is arranged between the guide cylinder (34, 64) and the pole core (44, 74). The guide cylinder (34, 64) and the pole core (44, 74) are arranged at a distance to each other in the longitudinal axis (30, 60) by means of the connection socket (43, 73).

Description

Actuator with a sealed guide cylinder

The invention relates to an adjusting device according to the

The preamble of claim 1, as well as a motor vehicle with such a control device. In particular, the invention relates to an adjusting device for changing the

Valve opening and / or the valve opening times

Internal combustion engines and / or an adjusting device for partial cylinder deactivation of internal combustion engines.

Actuators, in particular actuators with electromagnetically operated actuators, are in the

Automotive technology for opening and closing the intake and exhaust valves of the cylinders of diesel and / or

Gasoline engines used the fuel mixture in the

Introduce combustion chamber and the burned exhaust gases from the combustion chamber again. To achieve the highest possible efficiencies of the internal combustion engines are the

Timing of the opening and closing of the valves to be precisely adjusted, which takes place by means of a valve control or a valve train. This is understood to mean the mechanism which in a reciprocating engine, the valves and thus the

Charge change by opening and closing the inlet and exhaust gas outlet channels controls. In general, the valve is from a camshaft via a plunger, a

Cam followers or rocker arms open. Getting closed

Valves by coil springs, gas springs or positively controlled by a closing cam. The camshaft is driven by the crankshaft of the engine.

In the prior art, so-called

Slide cam systems proven to be a camshaft with grooves have, which are arranged to extend around the axis of rotation of the camshaft. The grooves are in operative connection with a front end of the plunger of the adjusting device, wherein at least one front end of a plunger is actuated

State of the actuator engages in the camshaft.

Such actuators consist of a pair of plungers movable in parallel with each other, which alternately engage in the grooves of the sliding camshaft and thus cause movement of the sliding camshaft, whereby the valves

are controlled. Such an actuator is

For example, see DE 10 2011 009 327 B4.

A disadvantage of this prior art has been found that the adjusting devices must be laboriously sealed in order to prevent the escape of lubricant from a camshaft housing. A seal of the plunger is always associated with friction. The actuators of the plunger are thus more powerful interpret and accordingly heavier and more expensive. Therefore, a plurality of seals are typically arranged in a control device, the guide cylinder and the

Seal the housing.

Furthermore, the assembly of such

Slide cam system with a sliding camshaft and an actuator proved to be extremely expensive. The

Actuator and push camshaft must be precisely positioned to each other. It has been found that tension on the one hand lead to tilt or jam the plunger in the guide sleeve, and on the other hand, in deformations, the sealing effect of the seals decreases and lubricating fluids can escape. The object of the present invention is therefore, the

To overcome disadvantages of the present state of the art and to provide an actuator that provides a simplified sealing concept that is inexpensive to manufacture and resistant to deformation. In addition, the actuator should be easy to install and reliable in operation.

This object is achieved by an adjusting device with the features of claim 1. Further advantageous

Embodiments are given in the subclaims.

The adjusting device according to the invention comprises at least one plunger assembly, wherein the at least one plunger assembly comprises a plunger, at least one guide cylinder and a

Pole plate, wherein the plunger is slidably disposed along a longitudinal axis from an unactuated state to an actuated state in the guide cylinder along a longitudinal axis. The actuated state corresponds to one

Engagement position in the grooves of a camshaft and the unactuated state, the retracted position in the guide cylinder, in which there is no engagement in the grooves of the camshaft.

According to the invention, between the guide cylinder and the

Polkern arranged a non-magnetic connection socket, wherein the guide cylinder and the pole core through the

Connection socket in the longitudinal axis at a distance

are arranged. The pole core and the guide cylinder are made of a soft magnetic material, while the connection socket due to the non-magnetic

Features a gap for a magnetic tributary forms. The connection socket can be positively, materially or non-positively connected to the pole core and the guide cylinder.

Furthermore, it is particularly advantageous if the

Connection socket is made of a stainless steel.

Non-magnetic stainless steels are for example

Chromium nickel steels with an austenitic microstructure and are sufficiently easy to work with and have the required thin-walled construction sufficient strength to meet the mechanical, often jerky loads.

In addition, it has proven to be particularly advantageous if the distance between the guide cylinder and the pole core is adapted to the working stroke of the respective plunger. The distance between the guide cylinder and the pole core should correspond to the working stroke of the ram, but may deviate by up to ± 50% from the working stroke.

According to a further embodiment of the present invention, it is advantageous if the connection socket with the pole core and / or the connection socket is or are pressure-tightly connected to the guide cylinder. In particular, suitable for a pressure-tight connection welded joints that can be inexpensively and easily manufactured and have high strengths. The connection between the pole core and the guide cylinder is namely the sudden

Resetting or advancing the ram mechanically heavily loaded. Furthermore, it is particularly advantageous if the

Adjusting device comprises at least a first plunger assembly and at least one second plunger assembly, which are arranged parallel and spaced perpendicular to a connecting plate. The connection plate has at least a first one

Recess and at least one second recess, wherein the at least first plunger assembly engages through the at least first recess and the at least second

Plunger assembly engages through the at least second recess, wherein between at least one of the recesses and one of the plunger assemblies a game is provided. The game is a circumferential gap between the plunger assembly and the

Recess and can either by an enlarged design of the recess or by a corresponding adjustment of the outer diameter of the guide cylinder of the respective

Plunger assembly be accomplished. The recesses are preferably bores. It follows in particular that more generous manufacturing tolerances on the part of

Camshaft housing and can be realized on the part of the actuator, whereby significant cost advantages can be achieved. The generous tolerances can be achieved by the floating bearing of the plunger assembly on the

Terminal board can be compensated without tilting the tappets due to tension or jamming in the guide sleeves.

According to a further embodiment of the present invention, it is particularly advantageous if the respective

Plunger assembly has at least one actuator which is in operative connection with a rear end of the plunger.

Through the interaction of the actuators with the respective ones

Tappets these are guided in the respective plunger assembly along the longitudinal axis on a common camshaft and engage in at least one groove. The actuators can do the Actuate plunger of the respective plunger assembly independently of each other, wherein advantageously the actuators are rod-shaped and are movably guided in the respective guide cylinder of the plunger assembly. Cylindrical actuators are particularly suitable for this purpose. The actuators can be actuated mechanically, magnetically or electromagnetically.

Moreover, it is particularly advantageous if the actuators are magnetically or electromagnetically actuated and are each surrounded by a separate actuator coil. As a result, the actuators can be selectively actuated by means of simple electrical signals, so that the tappets are optimized

Printing sequence is exercised, which ensures that the

Internal combustion engine optimized in each case

Operating area is working.

More preferably, the respective guide cylinder is formed from a first guide sleeve and a second guide sleeve. The first guide sleeve forms a connection side

Guide cylinder opening, through which the plunger is guided along the longitudinal axis in the direction of the camshaft and is supported in the manner of a sliding bearing. The first guide sleeve may preferably be made of a non-magnetic material to the friction conditions in the

To stabilize axial movement. The second guide sleeve is advantageously arranged on the side facing away from the guide cylinder opening side of the first guide sleeve and encloses partially together with the first guide sleeve, the plunger and the actuator. The second guide sleeve may be made of a magnetic material, wherein

advantageously on the ram or the actuator

facing side of the second guide sleeve, a sheath of a non-magnetic metal, such as a Chromium-nickel alloy, may be attached to the friction during the axial movement of the plunger and the actuator too

stabilize.

The first guide sleeve and the second guide sleeve are typically inserted into one another, preferably to form a pressure-tight connection. The connection between the first guide sleeve and the second guide sleeve may also be an adhesive connection, press connection or the like.

Further preferably, the second guide sleeve supports the actuator at a rear end of the plunger and the first guide sleeve supports the plunger. The second guide sleeve is therefore arranged in regions between the respective actuator coil and the respective actuator.

Moreover, it is advantageous if a spring element is provided, which is supported on the one hand on the guide cylinder and on the other hand is in operative contact with the plunger. The spring element is supported for example on a shoulder in the first guide cylinder as a compression spring or on an inner shoulder in the second guide cylinder as a tension spring. To make the contact between the

Spring element and the respective plunger, the plunger may have a spring plate. The spring plate can be placed on the plunger, molded or worked. The spring plate also serves to guide the plunger in the respective guide cylinder. The first spring element can be a in

Left-handed wound coil spring and the second

Spring element be a wound in the legal sense coil spring and vice versa. In particular, in the rotation sense oppositely arranged compression springs prevent jamming of the plunger.

In addition, it is particularly advantageous if the

The seal may be formed as a conventional sealing ring and a gap between the guide cylinder and a

Close housing opening of camshaft housing.

In particular, in combination with a sealed at the rear end of the guide cylinder, the adjusting device is sealed in the mounted state on a camshaft housing and further seals are not necessary within the housing.

Furthermore, it is advantageous if the respective

Guide cylinder has a contact surface, which on the

Connection side of the connection plate is applied, whereby a particularly simple installation of the adjusting device is realized. When mounting the adjusting device on the

Camshaft housing thus acts no forces on the

Actuator coil.

According to a further advantageous embodiment of the

present invention is in the guide cylinder a

Sliding bush provided by the maximum stroke of the respective plunger is predetermined in the longitudinal axis. The

Tappet may preferably be arranged in the enclosed by the first guide sleeve and the second guide sleeve with the plunger space, so that an additional fixation of the sleeve is not necessary. Such sliding bush is a low-cost component, which is preferably made of a non-magnetic material and a simple customizable adjustment of the working stroke of a

Actuator allows and ensures low-friction bearing of the plunger. In particular, a low-friction bearing of the plunger reduces the necessary Zustellkräfte.

Furthermore, it is particularly advantageous if a housing the

Enclosed plunger assembly on the side facing away from the connection side of the connection plate. The housing protects the ram assembly from external influences and dirt.

Moreover, it is still advantageous if the

Adjusting device is designed in cartridge design. For this purpose, the adjusting device, in particular the respective

Guide cylinder, guide surfaces on, through the

Placing or inserting the adjusting device on a

Camshaft housing is a self-centering of the plunger assembly of the actuator. The play between at least one recess and a plunger assembly allows the required self-centering shifts without it in the respective plunger assembly to tension or

Deformations comes.

Furthermore, the present invention relates to a motor vehicle with an adjusting device according to the invention. The

Adjusting device consists of at least one plunger assembly comprising at least one plunger, at least one guide cylinder and a pole core, wherein the plunger is slidably disposed along a longitudinal axis in the guide cylinder, wherein between the guide cylinder and the pole core, a non-magnetic connection sleeve is arranged and wherein the guide cylinder and the pole core through the Connecting bush in the longitudinal axis are arranged at a distance.

Hereinafter, a preferred embodiment of

Invention with reference to the accompanying drawings described in detail. In the drawing is:

Figure 1 is a perspective view of an inventive

Adjusting device with a plunger assembly with a guide cylinder which is closed as a semi-open cylinder by means of a decker-shaped pole core and a non-magnetic connection socket, and

Figure 2 is a schematic and sectional view of

Adjusting device according to FIG. 1.

Hereinafter, an adjusting device 1 according to a preferred embodiment of the invention will be described in detail with reference to Figures 1 and 2.

FIG. 1 shows the adjusting device 1 with a first

Plunger assembly 3, a second plunger assembly 6 and a connection plate 10. The connection plate 10 is to

set up, the adjusting device 1 to a not

attached camshaft housing to fix. The

Plunger assemblies 3, 6 are substantially identical in construction and parallel to each other and spaced apart and each comprise a plunger 31, 61 which in a respective guide cylinder 34, 64 along a longitudinal axis 30, 60 by a working stroke 59, 89th is arranged longitudinally displaceable. The working stroke 59, 89 is represented by double arrows in FIG.

The respective plunger 31, 61 has a front end 32, 62 and a rear end 33, 63, wherein the front end 32, 62 by a in the respective guide cylinder 34, 64

incorporated guide cylinder opening 59, 79 protrudes and at the rear end 33, 63 an actuator 35, 65 is arranged.

The adjusting device 1 or the connection plate 10 has a plurality of screws 16 for connection to the camshaft housing. Furthermore, the first plunger assembly 3 and the second plunger assembly 6 are on the terminal side of the 15th

side facing away from the connection plate 10 surrounded by a housing 8. The adjusting device 1 is thus formed in a cartridge design that is characterized in that the adjusting device 1 with little effort on a

Camshaft housing attachable and can be fastened.

Figure 2 it can be seen that the connection plate 10 has a first recess 11 and a second recess 12, wherein the first recess 11 is provided for the first plunger assembly 3 and the second recess 12 for the second plunger assembly 6. The longitudinal axis 30 of the first plunger assembly 3 and the longitudinal axis 60 of the second plunger assembly 6 are aligned perpendicular to the terminal plate 10 and are spaced from each other.

The respective plunger 31, 61 is by means of the respective

Guide cylinder 34, 64 guided by the recess 11, 12, wherein the second plunger assembly 6 floating with a game 7 is held in the second recess 12 to avoid a double fit with the camshaft housing (not shown). Accordingly, the second plunger assembly 6 is held movably in the plane of the terminal plate 10, preferably ± 0.5 mm.

The game 7 can either by a larger sized

Recess 11, 12 are realized, or by a smaller sized outer circumference or diameter of the respective

Guide cylinder 34, 64. The game 7 is mounted in the

State of the adjusting device 1 in the recess 12 an annular gap between the connection plate 10 and the guide cylinder 34, 64. In addition, the game allows 7 or the floating mounting during assembly of the

Actuator 1 on the camshaft housing a

Self-centering of the guide cylinder 34, 64 by means provided therefor guide surfaces 55, 85. The guide surfaces 55, 85 are formed for example as a chamfer.

The respective guide cylinder 34, 64 is formed in two parts from a first guide sleeve 41, 71 and a second guide sleeve 42, 72, which are nested with a plug connection 51, 81 in one another. The first guide sleeve 41, 71 is made of a non-magnetic material and has on an inner circumferential surface 52, 82 an inner shoulder 50, 80. The second guide sleeve 42, 72 is positively inserted into the first guide sleeve 41, 71 to the inner shoulder 50, 80. The second guide sleeve 42, 72 is made of a soft magnetic material, and is

typically on the side facing the actuator 35, 65 or the plunger 31, 61 with a non-magnetic

Metal coating provided by the friction during the axial movement of the plunger 31, 61 and the actuator 35, 65th is stabilized. The metal coating is preferably a chromium-nickel alloy.

Furthermore, it is shown in FIG. 2 that the end of the respective guide cylinder 34, 64 associated with the rear end 33, 63 is closed by means of a cover-like pole core 44, 74 and a connecting bush 43, 73. The pole core 44, 74 is made of a soft magnetic material. On the side facing away from the guide cylinder 34, 64 side of the pole core 44, 74 a permanent magnet 56, 86 is arranged.

Between the pole core 44, 74 and the guide cylinder 34, 64, and the second guide sleeve 42, 72 is the

Connecting bush 43, 73 are arranged, through which the respective guide cylinder 34, 64 with the pole core 44, 74 is indirectly connected. The connection bushing 43, 73 is made of a non-magnetic material, preferably an austenitic alloy noble metal, and the guide cylinder 34, 64, or the respective second one

Guide sleeve 41, 71 and the respective pole core 44, 74 to form a pressure-tight, gas and liquid-tight

Welded connection. The guide cylinder 34, 64 is thus a semi-open cylinder with a closed end and an open end, the guide cylinder opening 49, 79 has.

The pole core 44, 74 and the guide cylinder 34, 64 are spaced from each other by the connection sleeve 43, 73

arranged, through the connecting sleeve 43, 73, a magnetically permeable gap 45, 75 for a magnetic

Tributary is formed. The height of the respective gap 45, 75 in the longitudinal axis 30, 60 substantially corresponds to the maximum working stroke 59, 89 of the respective plunger 31, 61, however, deviations of ± 50% are possible.

The second guide sleeve 42, 72 has a shoulder 38, 68, on which a spring element 37, 67 rests. The spring element 37, 67 is on the one hand supported on the shoulder 38, 68 and on the other hand is in operative connection with the plunger 31, 61, or with a spring plate 40, 70 of the plunger 31, 61. The first

Spring element 37 is wound in the left-hand direction

Coil spring and the second spring element 67 in the

Helix wound coil spring, wherein the spring elements 37, 67 may be formed as glass fiber reinforced Kunststofffofffern.

The spring plate 40, 70 is formed in this embodiment as a flange which is arranged between an actuator 35, 65 and the respective plunger 31, 61. The actuator 35, 65 is operatively connected to the respective rear end 33, 63 of the plunger. To the actuator 35, 65 is one each

electrically actuated actuator coil 36, 66 arranged, which can be set to deliver the respective actuator 35, 65 under power.

The permanent magnet 56, 86 exercises one along the

Longitudinal axis 30, 60 acting attractive force on the actuator 35,

65, so that the actuator 35, 65 is pulled into a retracted position or by the permanent magnet 56, 86 and thus rests against the pole core 44, 74. This condition corresponds to the unactuated condition. As a result, the spring element 37, 67 is compressed, whereby a biasing force is provided which is smaller than the attraction force of the respective

Permanent magnet 56, 86. The actuator 35, 65 and the plunger 31, 61 assume the retracted position or the unactuated state.

To feed the respective actuator 35, 65, the actuator coil 36, 66 is energized and built up a magnetic field, which induces a magnetic force on the actuator 35, 65. The magnetic force acts in the same direction as the biasing force provided by the spring element 37, 67, which against the

Attraction of the permanent magnet 56, 86 acts. The sum of the magnetic force and the biasing force is greater than the attractive force of the permanent magnet 56, 86. As a result, the respective actuator 35, 65 and the respective plunger 31, 61 are guided in the corresponding guide cylinder 34, 64 guided axially along the longitudinal axis 30, 60 until the front end 32, 62 of the respective plunger 31, 61 in a groove of a

Camshaft (not shown) engages. The camshaft (not shown) rotates about an axis perpendicular to the respective longitudinal axis 30, 60 of the plunger 31, 61 extending axis. The plunger 31, 61 is in the actuated state.

The maximum working stroke 59, 89 of the respective plunger 31, 61 is adjusted by means of a sliding bush 39, 69, the

is disposed within the respective guide cylinder 34, 64 and is supported on an inner shoulder 50, 80 in the longitudinal axis 30, 60 and is arranged at the maximum working stroke 59, 89 an operative connection with the spring plate 40, 70th

to produce.

To reset the respective plunger 31, 61 of the current of the respective actuator coil 36, 66 is turned off and the

Permanent magnet pulls the actuator 35, 65 together with the plunger 31, 61 back into the guide cylinder 34, 64, to the actuator 35, 65 bears against the pole core 44, 74. The spring element 37, 67 is thus again compressed and the biasing force

provided. In this unactuated state, the magnetic flux gap 45, 75 is arranged in a plane between the actuator coil 36, 66 and the actuator 35, 65.

The first guide sleeve 41, 71 and the second guide sleeve 42, 72 surround partially the respective plunger 31, 61, wherein the second guide sleeve 42, 67 in the region of the rear end 33, 63 is arranged and partially the respective actuator 35, 65 along the Longitudinal axis 30, 60 stores. The actuator 35, 65 is for this purpose cylindrical in shape and placed on the respective rear end 33, 63 of the respective plunger 31, 61. The connection between the respective actuator 35, 65 and the respective plunger 31, 61 may be a

positive, non-positive adhesive bond or

to be like that.

A particularly simple assembly of the adjusting device 1 results from the shape of the guide cylinder 34, 64 of the first plunger assembly 3 and the second plunger assembly 6. The first guide sleeve 41, 71 is from the connection side 15 in the first recess 11 and the second recess 12th introduced, and is in each case by means of a contact surface 46, 76 on the connection side 15 of the connection plate 10. The abutment surface 46, 76 is worked or formed in the manner of a protruding flange on the respectively first guide sleeve 41, 71. On one of the outer surfaces 47, 77 of the respective first guide sleeve 41, 71 is a seal 48, 78th

arranged, through which the respective outer surface 47, 77 of the respective plunger assembly 3, 6 cooperates with a camshaft housing. Thus, a related to the outer surface 47, 77 liquid, gas-tight and pressure-resistant connection made between the respective plunger assembly 3, 6 and the camshaft housing. By definition, the outer surface 47, 77 is, on the one hand, the outer circumferential surface and the surface of the end face between the contact surface 46, 76 and the guide cylinder opening 49, 79.

In particular, from the interaction of the pressure-tight at the rear end sealed plunger assemblies 3, 6 and the

Seals 48, 78 results in the advantage that the

Actuator 1 pressure-tight can be placed on a camshaft housing even with generous manufacturing tolerances. The play 7 between at least one of the recesses 11, 12 and at least one of the plunger assemblies 3, 6 compensates for generous tolerances, without causing leakage between the adjusting device 1 and the camshaft housing.

Thus, according to the invention, an adjusting device 1

be provided, the generous tolerances in the

Production of the adjusting device 1 and the

Camshaft housing allows and thus cost in the manufacture and assembly and at the same time a

Reliable sealing realized. A simple compensation of manufacturing tolerances is made possible by the play 7 between the at least one plunger assembly 3, 6, wherein by the interaction of sealed by means of the connecting sleeve 43, 73 plunger assembly 3, 6 and the seals 48, 78, a reliable sealing effect is accomplished, which on particularly simple way can be realized. LIST OF REFERENCE NUMBERS

I Adjusting device 50 inside paragraph in 41

3 first plunger assembly 51 plug connection

6 second plunger assembly 52 inner circumferential surface 7 game 35 55 guide surface

8 housing 56 permanent magnet

10 Connection plate 59 Working stroke

II first recess 60 longitudinal axis

12 second recess 61 ram

15 connection side 40 62 front end

16 screws 63 rear end

30 longitudinal axis 64 guide cylinder

31 ram 65 actuator

32 front end 66 coil

33 rear end 45 67 spring element

34 guide cylinder 68 paragraph

35 Actuator 69 Sliding bushing

36 coil 70 spring plate

37 spring element 71 first guide sleeve 38 paragraph 50 72 second guide sleeve

39 Slide bush 73 Connecting bush

40 spring plate 74 pole core

41 first guide sleeve 75 gap

42 second guide sleeve 76 bearing surface

43 Connecting bush 55 77 Outside surface

44 Polkern 78 Seal

45 gap 79 guide cylinder opening

46 contact surface 80 internal shoulder in 71

47 outer surface 81 plug connection

48 gasket 60 82 inner lateral surface

49 guide cylinder opening 85 guide surface Permanent magnet 89 working stroke

Claims

claims

1. adjusting device (1) comprising at least one

Ram arrangement (3, 6),

- wherein the at least one plunger arrangement (3, 6) comprises a plunger (31, 61), at least one guide cylinder (34, 64) and a pole core (44, 74),

- wherein the plunger (31, 61) along a longitudinal axis (30, 60) in the guide cylinder (34, 64)

slidably disposed, characterized in that

between the guide cylinder (34, 64) and the

Polkern (44, 74) a non-magnetic connection sleeve (43, 73) is arranged, and

- That the guide cylinder (34, 64) and the pole core (44, 74) through the connecting sleeve (43, 73) in the longitudinal axis (30, 60) are arranged at a distance.

Second adjusting device (1) according to claim 1, characterized

characterized in that the connecting bush (43, 73) is made of a stainless steel.

3. adjusting device (1) according to one of the aforementioned

Claims, characterized in that the distance between the guide cylinder (34, 64) and the pole core (44, 74) is up to ± 50% of the working stroke (59, 89) of the plunger (31, 61). Adjusting device (1) according to one of the aforementioned

Claims, characterized in that the

Connecting bush (43, 73) with the pole core (44, 74) and / or the connecting bush (43, 73) is pressure-tight manner, in particular by means of a

Welded joint.

Adjusting device (1) according to one of the aforementioned

Claims, characterized in that the

Adjusting device (1) at least a first

Plunger assembly (3) and at least a second

Plunger assembly (6), the parallel and

spaced apart on a connecting plate (10) are arranged, which has at least one first recess (11) and at least one second recess (12), and in that the at least first plunger assembly (3) engages through the at least one first recess (11), and that the at least second plunger assembly (6) the

at least second recess (12) passes through, and between at least one of the recesses (11, 12) and one of the plunger assemblies (3, 6) a game (7) is provided.

Adjusting device (1) according to one of the aforementioned

Claims, characterized in that the

Plunger assembly (3, 6) comprises at least one actuator (35, 65) which is in operative connection with a front end (32, 62) of the plunger (31, 61).

Adjusting device (1) according to claim 6, characterized

characterized in that the actuators (35, 65) are magnetically actuated and each surrounded by at least one actuator coil (36, 66). Adjusting device (1) according to claim 7, characterized

in that the connecting bush (43, 73) is arranged between the actuator coil (36, 66) and the actuator (35, 65) in the unactuated state of the plunger (31, 61).

Adjusting device (1) according to claim 7 or 8, characterized in that between the guide cylinder (34, 64) and the pole core (44, 74) through the

Connecting bush (43, 73) flows a magnetic tributary.

Adjusting device (1) according to one of the aforementioned

Claims, characterized in that the

Guide cylinder (34, 64) from a first

Guide sleeve (41, 71) and a second guide sleeve (42, 72) are formed, which are pressure-tightly interconnected.

Adjusting device according to claim 10, characterized

characterized in that the first guide sleeve (41, 71) is made of a non-magnetic material and supports the plunger (31, 61) in the longitudinal axis (30, 60) and that the second guide sleeve (42, 72) made of a soft magnetic material is and the actuator (35, 65) in the longitudinal axis (30, 60) superimposed.

12. adjusting device (1) according to one of the aforementioned

Claims, characterized in that a

Return spring (37, 67) is provided, on the one hand on the guide cylinder (34, 64) is supported and on the other hand in operative contact with the plunger (31, 61).

13. adjusting device (1) according to one of the aforementioned

Claims, characterized in that the

Guide cylinder (34, 64) on an outer surface (47, 77) has a seal (48, 78).

14. Adjusting device (1) according to any one of claims 5 to 13, characterized in that the guide cylinder (34, 64) has a bearing surface (46, 76) which bears against the connection side (15) of the connection plate (10).

15. adjusting device (1) according to one of the aforementioned

Claims, characterized in that a

Sliding bush (39, 69) is provided, through which the maximum working stroke (59, 89) of the plunger (31, 61) in the longitudinal axis (30, 60) is predetermined.

16. adjusting device (1) according to one of the aforementioned

Claims, characterized in that a housing (8) is provided, which on the side facing away from the connection side (15) side of the connection plate (10)

Plunger assemblies (3, 6) encloses.

17. adjusting device (1) according to one of the aforementioned

Claims, characterized in that the

Adjusting device (1) is formed in the cartridge design.

18. Motor vehicle with an adjusting device (1) according to one of the preceding claims.