DE202015008578U1 - Assembly aid for a camshaft adjuster and method for mounting the camshaft adjuster on a camshaft-fixed section - Google Patents

Abstract

Hydraulic camshaft adjuster (1) of a vane type, comprising a stator (2) and a rotor (3) rotatably mounted radially inside the stator (2), the stator (2) having a cover-like cover portion (4), which cover portion (4) Rotor (3) at least partially covered to an axial end face (5) back and in an operating state a camshaft fixed insertion region (6) radially from the outside surrounds, characterized in that the cover portion (4) at its radial inner side (7) at least one elevation ( 8a, 8b) which extends so far radially inwards that it forms with the rotor (3) a, for the positive reception of the insertion region (6) prepared undercut (9).

Description

The invention relates to a hydraulic camshaft adjuster according to a vane type / vane type for varying the timing of a camshaft relative to a crankshaft of an internal combustion engine, such as a gasoline or diesel engine, a motor vehicle, such as a car, truck, bus, motorcycle or agricultural utility vehicle, with a stator and a rotor rotatably mounted radially inside the stator, wherein the stator has a cover-like cover portion, which cover portion at least partially covers / surrounds / overlaps the rotor to an axial end face, and in an operating condition surrounds / surrounds a camshaft-fixed insertion region radially from the outside ,

Exemplary prior art is known from DE 10 2006 002 993 A1 known, which describes a camshaft adjuster for an internal combustion engine in more detail. Therefore, from the prior art already generic camshaft adjuster are known, which are attached to a camshaft. There it is also customary aufzustecken the camshaft adjuster on a longer cylindrical surface on the camshaft.

However, it is necessary that this cylindrical surface on the camshaft has a certain minimum depth / minimum length, so that the camshaft adjuster can be reliably held in a deferred / pre-assembled state in which the central screw is not yet introduced. This pre-assembly state is in particular intended to set the phase angle / the rotational angle position of the camshaft adjuster, namely the rotor or the stator relative to the camshaft. Also in this phase already the belt and the chain are applied. It is required that the adjuster can not fall down or slip out of his seat. The embodiments known from the prior art have the particular disadvantage that, despite a certain large-sized cylindrical surface, they are nevertheless only of limited suitability to hold the adjuster with sufficient holding force on the camshaft. There is still a relatively high probability that the adjuster can fall off the camshaft and can even be damaged or the assembly process must be carried out again.

It is therefore the object of the present invention to remedy these known from the prior art disadvantages and to provide a camshaft adjuster, by which a dropping or slipping in a setting phase of the camshaft adjuster relative to the camshaft should be avoided as possible.

This is inventively achieved in that the cover portion has at least one elevation on its radially inner side, which extends so far radially inwards, that it forms with the rotor a, prepared for the positive reception of the Einschiebebereiches undercut.

This makes it possible to directly use an already existing region of the camshaft adjuster simultaneously for applying a sufficient holding force for holding the camshaft adjuster to the camshaft in the adjustment phase. In particular, without additional devices, elements or auxiliary parts of the camshaft adjuster can thus be mounted and held independently as easy as possible during assembly on the engine / on the camshaft. A reliable mounting of the camshaft adjuster in the adjustment phase is thus implemented particularly cost-effectively. In the camshaft adjuster thus an undercut is created, which allows the fitter at the customer, the camshaft adjuster on the engine very easy to assemble. The assembly is now particularly easy to execute in the specific angular position.

Further advantageous embodiments are claimed in the subclaims and explained in more detail below.

It is also advantageous if the inside is formed by a through hole of the cover, wherein the through hole has a base portion which is geometrically interrupted by the at least one survey on at least one inner peripheral region. As a result, the survey is designed particularly simple.

If the through hole in the at least one inner peripheral region of the at least one protrusion has a smaller distance from the axis of rotation than in / at the base region, the configuration of the protrusion is further simplified.

In this context, it is also advantageous if the inside of the cover portion, d. H. the through hole with its base region and its at least one elevation, produced by punching technology / is formed. The cover section is more preferred than a sheet metal component, d. H. consisting of a sheet metal material, more preferably formed of a sheet metal component / consisting of a metal sheet. This further simplifies the production of the survey.

It is furthermore advantageous if the rotor has a centering receptacle, particularly preferably with its inner peripheral side, which is for radial contact with the insertion region is trained. As a result, the rotor is also centered directly to this when pushed onto the insertion area.

Further preferably, the centering receiver is adapted to the insertion region, in particular to a disc section of the insertion region, in such a way that the insertion region in the centering receptacle is centered in the mounted state of the camshaft adjuster by a sliding fit. As a result, the radial positioning of the camshaft adjuster is implemented in a simple manner.

If the cover section also has two elevations spaced apart in the circumferential direction of the rotor, the same camshaft adjuster can even be mounted in two different positions and, for example, simultaneously used both for intake and exhaust camshafts.

It is also advantageous if the at least one elevation is matched to a recess of the insertion region, so that the camshaft adjuster can be attached to the insertion region by pushing the recess through the elevation in the axial direction. As a result, a particularly simple assembly of the camshaft adjuster is implemented.

More preferably, at least one radially inwardly extending Ausrichtnase is mounted on the rotor in the region of the undercut, which is designed for positive reception of the insertion region in the direction of rotation of the rotor. As a result, a simultaneous rotation of the camshaft adjuster in the mounted state / the adjustment phase is implemented relative to the insertion region, in which case the camshaft adjuster is advantageously mounted immediately in the intended rotational position at the insertion region. As a result, the assembly is further simplified in particular.

In this context, it is also further advantageous if even several, preferably two Ausrichtnasen are formed on the rotor, which are arranged spaced apart in the circumferential direction, so that here again the same camshaft adjuster can be mounted in different positions and, for example, for a Inlet camshaft and an exhaust camshaft is usable. As a result, the production is further reduced due to the increasing number of units.

• a) Bereitstellen des den Hinterschnitt aufweisenden Nockenwellenverstellers,
• b) Bereitstellen des nockenwellenfesten Einschiebebereiches, der einen sich in radialer Richtung erstreckenden Scheibenabschnitt aufweist, und
• c) Aufschieben des Nockenwellenverstellers auf den Einschiebebereich, so dass der Nockenwellenversteller durch ein Hineinragen des Schiebenabschnittes in den Hinterschnitt in axialer Richtung formschlüssig gehalten ist.

Dadurch ist auch die Montage des Nockenwellenverstellers besonders effizient umgesetzt.Furthermore, the invention also relates to a method for mounting a camshaft adjuster according to at least one of the aforementioned embodiments on a camshaft-fixed insertion region, said method comprising at least the following steps:

• a) providing the undercut camshaft adjuster,
• b) providing the camshaft fixed Einschiebebereiches having a radially extending disc portion, and
• c) sliding the camshaft adjuster onto the insertion region, so that the camshaft adjuster is held in a form-fitting manner in the undercut in the axial direction by a protrusion of the pushing section.

As a result, the assembly of the camshaft adjuster is implemented particularly efficient.

In this context, it is also advantageous if the undercut is configured such that the insertion region is supported / held / positionally secured in two opposite axial directions in the undercut. As a result, a particularly simple position assurance is implemented.

More preferably, the stator is placed before pushing the camshaft adjuster so that a survey forming the undercut in the radial direction is directed upward (i.e., in a direction opposite to the direction of gravity acting direction). After pushing the camshaft adjuster on the insertion region, the camshaft adjuster is then securely held securely by the acting gravitational force, the undercut being securely mounted on the disc section.

In other words, therefore, the assembly / assembly / mounting of the camshaft adjuster with / on the camshaft is particularly efficiently implemented, while the camshaft adjuster comprises a device to hook the phaser on the camshaft and adjust the relative angular position, without the connection between the cam phaser (VCP - Variable Cam Phaser) and the camshaft releases. In the adjustment phase, therefore, the camshaft adjuster can be held simultaneously in the defined angular position on the camshaft. The same camshaft adjuster can also be mounted in two or more positions.

The invention will now be explained in more detail with reference to figures, in which context also different embodiments are shown.

Show it:

1 a longitudinal sectional view of a camshaft adjuster according to the invention a first advantageous embodiment, wherein the camshaft adjuster is shown in an assembled state, cut along its axis of rotation, in which state it is positively mounted on a camshaft fixed insertion region and is tilted with its axis of rotation relative to the Einschiebebereich something,

2 an isometric view of the camshaft adjuster after 1 in addition to the insertion area, wherein the insertion region and the camshaft adjuster are clearly visible from one side, which are positively connected to one another in the mounted state, and on the part of the camshaft adjuster, the cover portion of the stator and the elevations are clearly visible on the inside,

3 an isometric view of the camshaft adjuster including Einschiebebereich according to 2 , but now no longer a first survey but a second survey is aligned flush with a recess at the Einschiebebereich,

4 an isometric view of a camshaft adjuster according to the invention together with a Einschiebebereich, which are formed according to a further advantageous second embodiment, wherein in the region of the inner peripheral side of the rotor an alignment nose is particularly well recognized, which is tuned with an alignment recording in Einschiebebereich, and

5 an isometric view of the camshaft adjuster after 4 together with a Einschiebebereich according to a further embodiment, wherein the Einschiebebereich is now aligned with an alignment receptacle flush with a second Ausrichtnase the camshaft adjuster.

The figures are merely schematic in nature and are for the sole purpose of understanding the invention. The same elements are provided with the same reference numerals. The various features of the different embodiments can be freely combined with each other.

In the 1 and 2 is an inventive camshaft adjuster 1 to recognize according to an advantageous first embodiment. The camshaft adjuster 1 is designed and functioning as a vane-type hydraulic camshaft phaser. Regarding the operation of the camshaft adjuster is in this context on the DE 10 2006 002 993 A1 referenced, which discloses the more concrete construction of the camshaft adjuster, wherein its execution and operation is considered integrated herein.

The camshaft adjuster 1 thus has a stator 2 on. The stator 2 again has a drive gear 14 on, which forms a basic body. This drive gear 14 has an external toothing, which is prepared, a traction means, such as a belt or a chain, a traction mechanism, such as a belt drive or a chain drive, rotatably receive. In the operating state of an internal combustion engine, which is not shown for clarity, lies at least on a part of the drive gear 14 this traction means. This is the stator 2 in the operating state of the camshaft adjuster 1 or the internal combustion engine rotatably connected to a traction means of the traction mechanism, which traction means is further rotatably connected to an output shaft (such as a crankshaft) of an internal combustion engine.

Inside the stator 2 , relative to the stator 2 rotatably mounted, is a rotor 3 arranged. The rotor 3 is radially inside the stator 2 , namely in particular radially within the drive gear 14 arranged. The rotor 3 forms in the usual way with the stator 2 several hydraulic working chambers 21 out through the inside of the stator 2 and through, to the rotor 3 mounted, extending in the radial direction wings 27 are limited. Depending on a hydraulic pressurization of these working chambers 21 is the rotor 3 relative to the stator 2 rotatable / adjustable between at least two rotational positions.

The rotor 3 is still in the operating state of the camshaft adjuster 1 with a camshaft-proof insertion area 6 rotatably connected. The insertion area 6 is even as an integral part of a camshaft 13 designed the internal combustion engine. For this purpose, the rotor 3 a centering shot 15 on, at his or by his inner peripheral side 20 is trained. The inner diameter of the circular inner peripheral side 20 is so on a circular / annular disc section 17 of the insertion area 6 matched that of the insertion area 6 in the operating state on with this disc section 17 by a sliding seat in the radial direction to the rotor 3 centered / aligned. The disc section 17 is by an annular bulge on an outer peripheral side of the insertion area 6 formed on the front side. The insertion areas 6 therefore also has an undercut 26 on. By means of the centering is the camshaft adjuster 1 in the operating state with its axis of rotation 11 (corresponds to the axis of rotation of the stator 2 and the rotor 3 ) coaxial with the axis of rotation 12 of the insertion area 6 arranged / aligned. In particular, then lies the inner peripheral side 20 on a radial outer peripheral side of the disk portion 17 at.

As always, especially good in 2 can be seen, the stator points 2 a lid-shaped cover portion 4 on, which is here as a plate, ie plate-shaped. The cover section 4 is by means of several, namely four, designed as screws fastener 16 rotatably with the drive gear 14 / the main body of the stator 2 connected. The cover section 4 extends so in the radial direction of the main body of the stator 2 out inside that he's inside the stator 2 recorded rotor 3 at its front 5 at least partially / partially covered so that it is between the stator 2 and the rotor 3 trained workrooms 21 in the axial direction to the camshaft 13 towards covering / sealing. At a cover section 4 opposite side / front side of the rotor 3 points the stator 2 again a sealing lid 22 on. This sealing cover 22 is substantially parallel to the cover portion 4 arranged and also formed substantially plate-shaped. The sealing cover 22 seals / covers the working chambers 21 in an axial direction corresponding to the cover portion 4 turned away, from.

The cover section 4 is as a stamped part, ie formed punching technology. In the first embodiment, the cover portion 4 completely made of a sheet of metal. Central, ie to the axis of rotation 11 of the camshaft adjuster 1 is in the cover section 4 a through hole 10 brought in. This through hole 10 is also formed punching technology. This through hole 10 forms the radial inside of the cover section 4 out.

The through hole 10 is geometrically divided into several areas / perimeter areas / inner perimeter areas. A circular / semicircular extending inner circumferential region of the through hole 10 is as a basic section 23 formed and has a constant first radius. The basic area 23 therefore has in the circumferential direction of the axis of rotation 11 always the same radial distance to the axis of rotation 11 , The first radius of the basic area 23 of the through hole 10 is greater than a second radius of the rotor 3 in the area of its centering 15 , The basic area 23 is geometrically at two inner peripheral portions of the through hole 10 through two surveys 8a and 8b interrupted. The radial inside of a first survey 8a extends in the manner of a secant with respect to the base region 23 , The inside of the first survey 8a therefore has a smaller distance from the axis of rotation 11 on as the inside of the base area 23 , Also, the survey points 8a in its circumferential center (ie its point of the smallest distance to the axis of rotation 11 ) a smaller radial distance to the axis of rotation 11 on as the center shot 15 , This first survey 8a interrupts the basic area 23 thus along the peripheral portion of the through hole 10 at a certain angle

Distances to the first survey 8a is a second survey 8b offset in the circumferential direction, at a further, third inner peripheral portion of the through hole 10 arranged. The first survey 8a and the second survey 8b are by means of the basic area 23 , ie the area which has the first radius / diameter interrupted. Because the second survey 8b geometric like the first survey 8a is formed, it also extends in the radial direction inwardly from the base portion 23 path. Also this second survey 8b forms an inside of the through hole 10 in the form of a secant. The first survey 8a and the second survey 8b are at a certain angle range between 90 ° and 180 °, namely 120 ° with respect to their center of circumference (ie with respect to the point of the smallest distance to the axis of rotation 11 ) spaced apart. Through these surveys 8a and 8b is in the axial direction between the rotor 3 and the cover portion 4 in two circumferential regions of the through hole 10 / the cover section 4 an undercut 9 educated. Both the second survey 8b as well as the first survey 8a make the undercut 9 to a part. Regarding the second survey 8b is this undercut 9 in 1 particularly easy to recognize.

As continues in 2 It is easy to see that is the first survey 8a a recess 19 the camshaft-proof insertion area 6 assigned. This recess 19 is at one of the insertion area 6 trained disc section 17 provided and complementary to the first survey 8a (and consequently also complementary to the second survey 8b ) designed. When sliding the camshaft adjuster 1 on the insertion area 6 in a Einschiebeposition / insertion position, the camshaft adjuster 1 with its axis of rotation 11 initially at a certain angle relative to the axis of rotation 12 of the insertion area 6 (ie the camshaft 13 ) hired. After that ( 1 ) the disc section 17 with a peripheral area that is offset from the recess 19 located in the undercut 9 in the area of the second survey 8b used. The stator 2 is for it with its cover section 4 such relative to the insertion area 6 twisted arranged that the recess 9 with the survey 8a flees. When inserting the remaining area of the disc section 17 slides the recess 19 at the first survey 8a past. After the complete insertion of the disc section 17 in the stator 2 , is the phaser 1 relative to the insertion area 6 arranged such that the axes of rotation 11 and 12 are arranged coaxially with each other. The disk section 17 is then in the axial direction in the phaser 1 through the rotor 3 as well as the stator 2 / the cover section 4 axially supported.

The disc section 17 is in a mounting position / setting position / adjustment position / adjustment phase in the centering 15 of the rotor 3 determined by a sliding seat in the radial direction and thus relative to the rotor 3 / Phaser 1 centered. This is the disc section 17 via the centering fixture 15 and the undercut 9 both positively in the radial direction and in the axial direction of the camshaft adjuster 1 held. In particular, the camshaft adjuster engages 1 again with the second survey 8b in the undercut 26 of the insertion area 6 one. The stator 2 is positioned in the adjustment position such that the second survey 8b when pushed over the axis of rotation 13 , ie against the gravitational force, is directed, causing it to an additional, independent support of the camshaft adjuster 1 at the insertion area 6 comes.

As with the reference point 24 at a cover portion 4 facing axial end face of the drive gear 14 indicated, in the adjustment position, the relative rotational position between the stator 2 to Einschiebebereich 6 be adjusted by the phaser 1 together with rotor 3 and stator 2 relative to the insertion area 6 is twisted. For better detection of the relative rotational position is on a tooth of the external toothing of the drive gear 14 the reference point 24 attached in the form of a marker. As a result, a particularly simple alignment is implemented during the camshaft adjuster 1 through the positive connection to the insertion area 6 is held securely.

In 3 is still the camshaft adjuster 1 The first embodiment shown again, but the camshaft 13 including the Einschiebebereiches 6 formed according to a further, second embodiment. The camshaft 13 here is not more than one exhaust camshaft according to 2 but formed as an intake camshaft. According to 3 is the recess 19 of the insertion area 6 twisted a bit and now works with the second survey 8b when inserting the insertion area 6 in the camshaft adjuster 1 together. Consequently, now serves in this embodiment, the first survey 8a for positive retention of the disc portion 17 ,

In the 4 and 5 is then a further, second advantageous embodiment of the camshaft adjuster according to the invention 1 however, the cam phaser 1 this second embodiment is substantially expanded and functioning according to the first embodiment.

How very good in 5 can be seen, the rotor points 3 of the camshaft adjuster 1 on his rotor 3 two radially inwardly extending Ausrichtnasen 25a and 25b on. A first alignment nose 25a is in an angular range of the first survey 8a on the inner circumference side 20 of the rotor 3 arranged, namely integrally formed therewith. A second alignment nose 25b is in turn in an angular range of the second survey 8b equal to the first alignment nose 25a educated. The two alignment noses 25a and 25b are according to the angular distance (distance in the circumferential direction of the axis of rotation 11 ) between the first and the second survey 8a and 8b spaced apart from each other.

As well especially in 4 can be seen, is the second alignment nose 25b complementary to one in the disc section 17 of the insertion area 6 trained alignment recording 18 designed. This alignment shot 18 is along the circumference of the Einschiebebereiches 6 relative to the recess 19 offset angeordent. The second alignment nose 25b Here again serves the in 4 illustrated exhaust camshaft 13 for targeted Drehausrichtung between the camshaft adjuster 1 and the insertion area 6 , In an assembled state, the second alignment nose is located 25b in the alignment recording 18 on, leaving the slide-in area 6 rotatably with the rotor 3 is positively connected.

Again, an in 5 illustrated intake camshaft 13 with her alignment shot 18 with the first alignment nose 25a form-fitting together, so that the insertion area 6 in a mounted state of the camshaft adjuster 1 in the direction of rotation form fit the camshaft adjuster or its rotor 3 with the insertion area 6 combines.

In other words, on the phaser 1 in the area of the centering area (the centering 15 ) of the rotor 3 an undercut 9 being considered. Just like the camshaft adjuster 1 has the camshaft end (insertion area 6 ) an undercut 26 , The undercut 9 on the stage (camshaft adjuster 1 ) is so well thought out that the adjuster cover (cover section 4 ) at least one survey in one place 8a respectively. 8b having. The remaining bore diameter (radius of the through hole 10 ) on the lid (cover portion) is larger than the centering diameter of the rotor 3 (larger than the inner circumference side 20 of the rotor 3 ), so that the camshaft end can be easily threaded. Because the lid 4 a stamped part is, the survey can be 8a respectively. 8b Produce cost-neutral. The lid elevation 8a . 8b is preferably together with a mark (reference point 24 ) upwards (ie counteracting the gravitational acceleration). If the threading point is engaged, the adjuster can 1 Just let it go, being the adjuster 1 by its own weight positively on the camshaft 13 is attached and centered there. It is ensured that the adjuster 1 do not fall off. In some applications, one and the same stage is 1 (Same part principle) with the camshaft 13 mounted in two or more angular positions. One of the well-known reasons is that the adjuster 1 from the givens, here pulley, oval, trioval, out of round is made. This nonuniformity of the pulley 14 should bring in the operating system depending on the camshaft load a certain optimization (smooth running). Therefore, in such applications have to be adjusters 1 be mounted in a specific position different (outlet / inlet). Thus the Versteller 1 can be mounted in two different positions, were still on the lid 4 two survey noses 25a and 25b thoughtfully, which are each directed upwards at the desired position desired. Similarly, at the camshaft end was a flattening (recess 19 ), which also depending on the position of a free movement of the lid lugs (surveys 8a and 8b ) guaranteed. With this idea it is possible the adjuster 1 also for two or more positions on the camshaft 13 to assemble. Alternatively one would attach to the camshaft 13 attach second flattenings, so you can the adjuster 1 also axially to the camshaft 13 (by means of a bayonet lock / bayonet-like) slide on and attach. Thus, also the largest part of the angular position can be adjusted rotatably. If a more precise timing is required for the adjuster connection, then the rotor is 3 with timing noses (alignment nose 25a respectively. 25b ) and the camshaft 13 with a timing groove (alignment recording 18 ). This is the more accurate timing of the phaser 1 to the camshaft 13 created. The nose 25a respectively. 25b and groove 18 is always to be directed upwards during assembly. Thus, the above mounting solution can be better implemented. Do you want the timing of one and the same pretender? 1 Realize (same part principle) for two different positions, the nose-groove combination for the further desired position (angular position) is again to install.

LIST OF REFERENCE NUMBERS

1

Phaser

2

stator

3

rotor

4

cover

5

front

6

Einschiebebereich

7

inside

8a

first survey

8b

second survey

9

undercut

10

Through Hole

11

Rotary axis of the camshaft adjuster

12

Rotary axis of the insertion area

13

camshaft

14

drive gear

15

centering

16

fastener

17

disk portion

18

Ausrichtaufnahme

19

recess

20

Inner circumferential side

21

working chamber

22

Abdichtdeckel

23

basic area

24

reference point

25a

first alignment nose

25b

second alignment nose

26

Undercut of the insertion area

27

wing

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102006002993 A1 [0002, 0029]

Claims (9)

Hydraulic camshaft adjuster ( 1 ) of a wing cell type, with a stator ( 2 ) and one radially inside the stator ( 2 ) rotatably mounted rotor ( 3 ), wherein the stator ( 2 ) a lid-like cover portion ( 4 ), which cover section ( 4 ) the rotor ( 3 ) at least partially to an axial end face ( 5 ) and in an operating state, a camshaft-proof insertion area ( 6 ) radially from the outside, characterized in that the cover portion ( 4 ) on its radial inside ( 7 ) at least one survey ( 8a . 8b ), which extends so far radially inwards, that it with the rotor ( 3 ) one, for the positive reception of the Einschiebebereiches ( 6 ) prepared undercut ( 9 ) trains. Camshaft adjuster ( 1 ) according to claim 1, characterized in that the cover section ( 4 ) two in the circumferential direction of the rotor ( 3 ) spaced surveys ( 8a . 8b ) having. Camshaft adjuster ( 1 ) according to claim 1 or 2, characterized in that on the rotor ( 3 ) in the region of the undercut ( 9 ) at least one in the radial direction inwardly extending alignment nose ( 25a . 25b ) is mounted, which for the positive reception of the insertion area ( 6 ) in the direction of rotation of the rotor ( 3 ) is trained. Camshaft adjuster ( 1 ) according to claim 3, characterized in that on the rotor ( 3 ) two alignment noses ( 25a . 25b ) are formed, which are arranged spaced apart in the circumferential direction. Camshaft adjuster ( 1 ) according to one of claims 1 to 4, characterized in that the inside ( 7 ) through a through hole ( 10 ) of the cover section ( 4 ) is formed, wherein the through hole ( 10 ) a basic area ( 23 ), which on at least one inner peripheral region geometrically by the at least one survey ( 8a . 8b ) is interrupted. Camshaft adjuster ( 1 ) according to claim 5, characterized in that the through-hole ( 10 ) in the at least one inner peripheral region of the at least one elevation ( 8a . 8b ) has a smaller distance to the axis of rotation than in the basic area ( 23 ). Camshaft adjuster ( 1 ) according to one of claims 1 to 6, characterized in that the inside ( 7 ) of the cover section ( 4 ) is produced by punching technology. Camshaft adjuster ( 1 ) according to one of claims 1 to 7, characterized in that the cover section ( 4 ) is formed as a sheet metal component. Camshaft adjuster ( 1 ) according to one of claims 1 to 8, characterized in that the rotor ( 3 ) a centering receiver ( 15 ), which for radial contact with the insertion area ( 6 ) is trained.

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