DE102015210080B4 - Camshaft module with separable sliding element and method for assembling a camshaft module - Google Patents

Abstract

Camshaft module (1) having a camshaft (2) with two shaft elements (3.1, 3.2) and at least one cam module (4.1, 4.2, 4.3, 4.4) arranged on at least one of the shaft elements (3.1, 3.2), as well as a sliding element (5) for moving the Camshaft (2) along its longitudinal axis (L), characterized in that the sliding element (5) has a geometrical configuration comparable to the shaft elements (3.1, 3.2) with regard to the inner diameter and the outer diameter, and a carrier tube (5.1) by means of the carrier tube ( 5.1 Support tube (5.1) is designed so that the sliding element (5) can be arranged between the shaft elements (3.1, 3.2) in such a way that one of the coupling elements (6) of the sliding element (5) interacts positively with a corresponding coupling counter-element (7) of one of the shaft elements (3.1, 3.2) in order to prevent axial displacement of the sliding element (5) relative to the shaft elements (3.1, 3.2), one in each case of the coupling elements (6) forms a bayonet lock (B) with one of the counter coupling elements (7).

Description

The present invention relates to a camshaft module having a camshaft with two shaft elements and at least one cam module arranged on at least one of the shaft elements, as well as a sliding element. The present invention also relates to a method for assembling a camshaft module.

Basically, the use of camshaft modules, in particular camshafts, within a motor vehicle for controlling the valves of the internal combustion engine is known. So is particularly in the DE 10 2005 014 680 A1 discloses an adjustable camshaft for the valve drive of an internal combustion engine with an outer shaft and an inner shaft extending through the outer shaft. Cam elements are arranged on the outer shaft and connected to the inner shaft in a rotationally fixed manner via a bolt. If the phase position of the inner shaft is changed relative to the phase position of the outer shaft, the cam elements on the outer shaft execute a rotary movement independently of a rotation of the camshaft, for example in a cylinder head or in a cylinder head cover. As a result, the adjustable cam elements are rotated relative to the cam elements arranged on the outer shaft, so that the control times of intake valves and exhaust valves, for example, are changed relative to one another.

In the DE 10 2014 108 040 A1 For example, a variable valve device for varying a lift height of a valve of an internal combustion engine is shown. A first and a second valve are used for this, each arranged in such a way that a channel can be opened or closed, a rocking lever being designed with a first valve pressing section and a second valve pressing section in order to actuate the first valve and the second valve.

It is also fundamentally known that a camshaft segment with different cam elements can also be used to adjust the lift height of a valve. For this purpose, the cam module has at least two cam elements which have cam tracks that differ from one another. In order to enable a roller cam follower, for example, to be picked up on the desired cam track of the individual cam element of the cam module, it is necessary to use a corresponding (shifting) slide device or switching gate, by means of which the camshaft with the corresponding cam modules along the longitudinal axis, especially in the axial direction , is movable. This slide device or this slide element advantageously has a corresponding guide groove into which a pin of an actuator, in particular an electromagnetic actuator, can engage, so that when the pin engages in the guide groove or guide track of the slide element when the camshaft rotates about its longitudinal axis, in particular the central longitudinal axis, a displacement of the camshaft along the longitudinal axis of the camshaft is made possible.

It is also fundamentally known that such a shift gate is applied to a camshaft, for example, in a manner comparable to the individual cam elements or the cam module. This is possible in particular if the camshaft has to be assembled in advance before it is arranged, for example, in a corresponding bearing frame of a hood module. However, when installing a camshaft in a closed bearing frame, that is to say within closed bearing brackets, it is necessary to enable such a sliding element to be installed sequentially to the arrangement of the individual cam elements of the cam module.

From the DE 10 2009 059 712 A1 a cam unit for rotationally fixed and axially displaceable arrangement on a camshaft base body of a camshaft, comprising a tubular sleeve base body and at least one cam element arranged on the sleeve base body in a rotationally and displaceably fixed manner, has become known.

From the DE 10 2010 020 035 A1 is a camshaft on which at least two non-rotatable and axially displaceable cam pieces are arranged next to one another, each cam piece for actuating a respective gas exchange valve having at least one cam with at least two different cam curves, a switching gate for axially moving the cam piece on the camshaft being provided on each cam piece has become known.

From the DE 10 2011 051 480 A1 a camshaft module having a camshaft with at least two shaft elements and at least one cam module arranged on at least one of the shaft elements, as well as a sliding element for moving the camshaft along its longitudinal axis according to the preamble of claim 1 has become known.

Although advantageous camshaft modules have already become known from the prior art, there is still a need for improvement.

It is therefore the object of the present invention to overcome the disadvantages described above at least partially remedied in a camshaft module. In particular, the object of the present invention is to create a camshaft module and a method for assembling a camshaft module, which make it possible to integrate or assemble a camshaft module in a closed storage alley in a simple and inexpensive manner.

The above object is achieved by a camshaft module with the features according to claim 1 and by a method for assembling this camshaft module with the features according to claim 2. Further features and details of the invention emerge from the dependent claims, the description and the drawings. Features and details that are described in connection with the camshaft module naturally also apply in connection with the method according to the invention and vice versa, so that with regard to the disclosure of the individual aspects of the invention, reference is or can always be made to the individual aspects of the invention.

The camshaft module according to the invention has a camshaft with two shaft elements and at least one cam module arranged on at least one of the shaft elements. Furthermore, the camshaft module according to the invention has a sliding element for moving the camshaft along its longitudinal axis, the sliding element having coupling elements and each shaft element provided for displacement with the sliding element and designed as a support tube having at least one counter-coupling element, so that the sliding element can be arranged between the shaft elements in such a way that in each case one of the coupling elements of the sliding element interacts with a corresponding counter coupling element of a shaft element. The camshaft itself accordingly has two shaft elements, at least one of the shaft elements having a cam module and advantageously both shaft elements each having a cam module. A cam module advantageously has at least two cam elements which have different cam tracks for varying the cylinder stroke. A shaft element with a corresponding camshaft segment advantageously forms a shaft module. Accordingly, it is also conceivable that two shaft modules form a camshaft. According to the invention, a sliding element which connects to the shaft elements is arranged between the shaft elements. Here, a form-fitting connection is provided between the sliding element and the respective shaft element. The sliding element consequently advantageously connects the two shaft elements to form a common camshaft module. According to the invention, the sliding element has coupling elements, which, viewed in the axial direction, are each formed or arranged at the distal ends of the sliding element. According to the invention, these coupling elements of the sliding element interact with corresponding coupling counter elements of the respective shaft elements. This means that the coupling counter-elements are designed in such a way that they can interact with the coupling elements of the sliding element. Accordingly, each shaft element advantageously has at least one counter-coupling element which, viewed in the axial direction, is formed or arranged at one of the distal ends of the shaft element.

Outside of the invention, it is also conceivable that not only one sliding element but two sliding elements can be arranged between the shaft elements, so that not each sliding element has a shaft element, but the sliding elements on one side, that is to say at a distal end with one another and on their opposite side Side, which means are connected to a shaft element at the opposite other distal end. Advantageously, the coupling elements of the sliding element interact with the coupling counter-elements of the shaft elements in such a way that an axial fixation is caused between the sliding element and the shaft elements, so that when the sliding element is shifted axially along the longitudinal axis of the sliding element, the camshaft including the cam modules arranged on the shaft elements is shifted along the longitudinal axis takes place in the axial direction.

It is further provided that the sliding element has a carrier tube and a shift gate carried by means of the carrier tube, one of the coupling elements being formed on one of the distal ends of the carrier tube. Accordingly, the sliding element advantageously has a two-part design, comprising a support tube and a shift gate. The support tube also has a geometric configuration that is comparable to the shaft elements with regard to the inside diameter and the outside diameter, so that the shaft elements of the camshaft themselves can also be referred to as support tubes for the cam modules. The shift gate of the sliding element advantageously has at least one circumferential guide groove for receiving a pin of an actuator. The guide groove is advantageously Y-shaped and extends in the circumferential direction essentially completely around the shift gate. However, it is also conceivable that the guide groove has any other configuration or shape. It is thus possible for the guide groove to be S-shaped, double-S-shaped or in a comparable curved or curved shape is designed. Such a two-part design of the sliding element advantageously simplifies the manufacture of the sliding element, in particular in that the shift gate with the special design of the guide groove only has to be pushed onto the carrier tube. For this purpose, it is conceivable that the carrier tube has, for example, a structure, in particular in the form of a bulge, on its outer surface, advantageously circumferentially or at least partially circumferentially, in order to enable a non-positive connection between the shift gate and the carrier tube.

In the context of the invention it is further provided that in each case one of the coupling elements forms a bayonet lock with one of the coupling counter-elements. For this purpose, the coupling elements or the coupling counter-elements have corresponding hook-like projections which extend essentially in the circumferential direction and which engage in the corresponding recesses produced by the hook-like projections of the counter-element. For example, due to a simple rotation of the sliding element relative to the shaft elements, the coupling elements can advantageously engage in the coupling counter-elements and vice versa in order to consequently enable a safeguard against axial displacement of the sliding element relative to the shaft elements.

It is also conceivable that the camshaft module has a structured shaft which extends concentrically through a through hole in the camshaft and a through hole in the sliding element and guides the camshaft at least when it is shifted along the longitudinal axis. This structured shaft is advantageously a toothed shaft, in particular an inner shaft or a solid shaft. This inner shaft advantageously has in the axial direction, that is, grooves or teeth extending along the longitudinal axis. This structured or toothed shaft or inner shaft advantageously enables the axial displacement of the camshaft when a pin, in particular a guide pin of an actuator, engages in the guide groove of the sliding element during a rotation of the camshaft about its central longitudinal axis. This structured shaft advantageously transmits the torque, starting from the crankshaft, to the camshaft. For this purpose, at least the shaft elements and advantageously also the sliding element have a corresponding (counter) structure on their inner surface or the surface of the through hole, which is used to interact with the axially extending structure of the shaft or inner shaft. This means that the structure of the shaft elements and / or the sliding element, which is advantageously designed as a teeth or tooth structure, is in engagement with the teeth or the tooth structure of the structured shaft in order, for example, by means of a form fit for power transmission, starting from the crankshaft to the camshaft , to serve.

• - Positionieren der Wellenelemente innerhalb eines Lagerrahmens derart, dass jedes der Wellenelemente mittels einer Lagerbrücke des Lagerrahmens koaxial zueinander gelagert und zueinander beabstandet angeordnet wird,
• - Anordnen wenigstens eines Nockenelementes auf zumindest einem der Wellenelemente,
• - Positionieren des Schiebeelementes zwischen die zueinander beabstandet angeordneten Wellenelemente derart, dass die sich durch das Schiebeelement erstreckende Durchgangsbohrung koaxial zu den sich durch die Wellenelemente erstreckenden Durchgangsbohrungen erstreckt, und
• - Drehen zumindest des Schiebeelements um dessen Drehachse oder der Wellenelemente um deren Drehachse zur Erzeugung einer Verbindung zwischen den Kupplungselementen des Schiebeelementes und den Kupplungsgegenelementen des jeweiligen Wellenelements. Vorteilhaft wird hierdurch eine Montage des Nockenwellenmoduls auch innerhalb geschlossener und nicht nur offener Lagerbrücken eines Lagerrahmens eines Haubenmoduls ermöglicht. Das Positionieren des Schiebeelementes selbst zwischen den zueinander beabstandet angeordneten Wellenelementen erfolgt vorteilhaft mittels eines entsprechenden Greifelementes, welches dazu dient das Schiebeelement koaxial zu den Wellenelementen hin auszurichten und in einer definierten Position zu halten. Die Wellenelemente selbst werden vorteilhaft derart in die entsprechenden Lagerbrücken eingeschoben, dass bei der Montage des Nockenwellenmoduls die Wellenelemente selbst von der Lagerbrücke zumindest abschnittweise gehalten und vorteilhaft positioniert werden. Es ist jedoch auch denkbar, dass zusätzliche Greif- und Halteelemente angeordnet werden, um ein Ausrichten der Wellenelemente zu ermöglichen. Nachdem das Schiebeelement zwischen die beiden Wellenelemente angeordnet wurde, ist es denkbar, dass das Schiebeelement um dessen zentrische Längsachse gedreht wird. Es ist jedoch ebenso denkbar, dass die Wellenelemente selbst um deren zentrische Längsachse gedreht werden, oder beide Elemente, sprich das Schiebeelement und die jeweiligen Wellenelemente um deren jeweilige zentrische Längsachse gedreht werden, sodass die an dem Schiebeelement ausgebildeten bzw. angeordneten Kupplungselemente in die an den jeweiligen Wellenelementen ausgebildeten bzw. angeordneten Kupplungsgegenelemente eingreifen können. Hierdurch wird vorteilhaft eine formschlüssige Verbindung zwischen dem Schiebeelement und den Wellenelementen ermöglicht. Vorteilhaft ist eine derartige Anordnung zwischen dem Schiebeelement und den Wellenelementen eine lösbare Verbindung, deren Auflösung keine Beschädigung oder Zerstörung des Schiebeelements und/oder der Wellenelements verursacht.

Furthermore, a method for assembling a camshaft module according to the invention is claimed. The camshaft module advantageously has the features mentioned above. According to the invention, the method for assembling such a camshaft module has at least the following steps:

• - Positioning of the shaft elements within a bearing frame in such a way that each of the shaft elements is supported coaxially to one another by means of a bearing bracket of the bearing frame and is arranged at a distance from one another,
• - Arranging at least one cam element on at least one of the shaft elements,
• Positioning the sliding element between the shaft elements arranged at a distance from one another in such a way that the through-hole extending through the sliding element extends coaxially to the through-holes extending through the shaft elements, and
• - Rotating at least the sliding element about its axis of rotation or the shaft elements about their axis of rotation to produce a connection between the coupling elements of the sliding element and the counter-coupling elements of the respective shaft element. This advantageously enables the camshaft module to also be installed within closed and not just open bearing brackets of a bearing frame of a hood module. The sliding element itself is positioned between the shaft elements arranged at a distance from one another advantageously by means of a corresponding gripping element which serves to align the sliding element coaxially with respect to the shaft elements and to hold it in a defined position. The shaft elements themselves are advantageously pushed into the corresponding bearing brackets in such a way that, during the assembly of the camshaft module, the shaft elements themselves are at least partially held and advantageously positioned by the bearing bracket. However, it is also conceivable that additional gripping and holding elements are arranged in order to enable the shaft elements to be aligned. After the sliding element has been arranged between the two shaft elements, it is conceivable that the sliding element is rotated about its central longitudinal axis. However, it is also conceivable that the shaft elements themselves are rotated about their central longitudinal axis, or Both elements, i.e. the sliding element and the respective shaft elements are rotated about their respective central longitudinal axis, so that the coupling elements formed or arranged on the sliding element can engage in the coupling counter-elements formed or arranged on the respective shaft elements. This advantageously enables a form-fitting connection between the sliding element and the shaft elements. Such an arrangement between the sliding element and the shaft elements is advantageously a releasable connection, the disconnection of which does not cause any damage or destruction of the sliding element and / or the shaft element.

It is also conceivable that the method according to the invention is characterized by a further step which takes place before the camshaft segment is arranged. Here it is conceivable that a structured shaft is inserted through through bores in the shaft elements for angular alignment of the shaft elements. Angular alignment of the shaft elements is particularly advantageous if the shaft element already has a camshaft segment or both shaft elements each have a cam module, so that these shaft modules are aligned accordingly with regard to the camshaft segments, in particular the cam tracks of the individual cam elements of the camshaft segments. It is also advantageous that these camshaft segments are aligned with one another. An angular alignment of the shaft elements or shaft modules also advantageously serves to position the counter-coupling elements of the shaft elements in such a way that they can engage with the coupling elements of the sliding element when the sliding element is inserted in a defined position between the shaft elements.

It is also conceivable that the method according to the invention is characterized by a further step. This further step is characterized in that the structured shaft is pushed out of the through bores of the shaft elements again after the cam element has been arranged. The structured shaft must be pushed out in order to enable the sliding element to be arranged between the shaft elements.

It is also conceivable that the method according to the invention is characterized by a further step after connecting the sliding element to the shaft elements. Here, the structured shaft is pushed into the through bores of the shaft elements and the sliding element for the final angular alignment of the mounted camshaft module. This means that the assembled camshaft module is positioned in a defined angular orientation. In addition, the structured shaft remains in the through bores of the mounted camshaft module in order to advantageously enable a power transmission from the crankshaft to the camshaft to enable a rotary movement of the camshaft or the camshaft module about its central longitudinal axis.

In the context of the invention, it is also conceivable that at least one preassembled shaft module, having a shaft element and a cam module, is positioned within the bearing frame. It is also conceivable that two shaft modules are also positioned within the bearing frame of the hood module before the sliding element is arranged in the meantime with these shaft modules. Consequently, each shaft module advantageously has a shaft element and at least one camshaft module which is arranged or pushed onto the shaft element and has at least two cam elements. Temporally after the arrangement of the shaft module or the shaft element in the bearing brackets of the bearing frame of the hood module, a cam module is additionally pushed onto each of the shaft elements, so that a cam module is advantageously arranged on the corresponding shaft element on each side of the bearing bracket. Such an arrangement of a cam module is also conceivable after the sliding element has been arranged and the sliding element has been connected to the respective shaft elements.

The method described results in all of the advantages that have already been described for the camshaft module according to the first aspect of the invention.

• 1 eine perspektivische Darstellung eines Nockenwellenmoduls,
• 2 in einer seitlichen Darstellung die in der 1 gezeigte Ausführungsform des erfindungsgemäßen Nockenwellenmoduls,
• 3 in einer seitlichen Darstellung eine nicht erfindungsgemäße Ausführungsform eines Nockenwellenmoduls, und
• 4 in einer seitlichen Schnittdarstellung die in den 1 und 2 gezeigte Ausführungsform eines erfindungsgemäßen Nockenwellenmoduls.

A camshaft module according to the invention is explained in more detail below with reference to drawings. They each show schematically:

• 1 a perspective view of a camshaft module,
• 2 in a side view that in the 1 Shown embodiment of the camshaft module according to the invention,
• 3 in a side view an embodiment of a camshaft module not according to the invention, and
• 4th in a lateral sectional view the in the 1 and 2 Shown embodiment of a camshaft module according to the invention.

Elements with the same function and mode of operation are in the 1 - 4th each provided with the same reference numerals.

In 1 Figure 3 is a perspective view of a camshaft module 1 shown. The camshaft module 1 has a camshaft 2 as well as a sliding element 5 on. The camshaft 2 consists advantageously of at least two shaft elements 3.1 and 3.2 . On every shaft element 3.1 or. 3.2 are at least two cam modules 4.1 - 4.4 assembled. The unit made up of a wave element 3.1 or. 3.2 with mounted cam module 4.1 until 4.4 is advantageous as a (pre-assembled) shaft module 8th designated. The wave module 8th has at least one cam module 4.1 until 4.4 , advantageously two cam modules 4.1 until 4.4 Accordingly, the camshaft points 2 advantageously two shaft modules 8th on. The sliding element 5 is between the shaft elements 3.1 and 3.2 or the already cam modules 4.1 - 4.4 having shaft modules 8th arranged and produced together with the shaft elements 3.1 and 3.2 that extends in the longitudinal direction or along the longitudinal axis L. extending camshaft module 1 . The first wave element 3.1 extends through the storage bridge 10.2 while the second shaft element 3.2 through the warehouse bridge 10.1 extends. Are advantageous as in the 1 shown, closed storage bridges 10.1 and 10.2 educated. The assembled camshaft module 1 points advantageously on each side of the bearing bridge 10.1 or. 10.2 one cam module each 4.1 or. 4.3 and 4.2 or. 4.4 of a corresponding shaft element 3.1 or. 3.2 on. Through the through hole in the shaft element 3.1 and 3.2 as well as through the through hole of the sliding element 5 extends a textured rod 20th which are in the axial direction, that means in the direction along the longitudinal axis L. , extending elevations or teeth 21 and consequently also extending depressions 22nd has, which in not shown here counter structures of the camshaft module 1 intervention. The sliding element 5 is with the wave elements 3.1 and 3.2 via a corresponding bayonet connection B. advantageously releasably connected. A bayonet connection B. advantageously enables a form-fitting connection and force transmission between the sliding element 5 and the individual shaft elements 3.1 or. 3.2 . To this end, the sliding element 5 Coupling elements 6th on which with the corresponding coupling counter elements 7th of the individual shaft elements 3.1 or. 3.2 mutually or can be brought into engagement.

In the 2 is in a side view that in the 1 Shown embodiment of the camshaft module according to the invention 1 shown. Furthermore, one is the sliding element 5 having carrier tube 5.1 and a shift gate 5.2 made clear. The shift gate 5.2 has a guide groove 5.3 on, which is advantageously designed Y-shaped. As already mentioned, however, it is also conceivable that the guide groove 5.3 can have any other design or shape. The guide groove 5.3 runs in the circumferential direction around the longitudinal axis L. along the shift gate 5.2 and is used to engage a pin, not shown here, of an actuator for moving the shift gate 5.2 and consequently of the entire sliding element 5 along the longitudinal axis L. and consequently in the axial direction. Due to a movement of the sliding element 5 in the axial direction are consequently also those with the sliding element 5 connected shaft elements 3.1 and 3.2 in the direction along the longitudinal axis L. shifted or moved, which in turn with the shaft elements 3.1 and 3.2 connected cam modules 4.1 until 4.4 along the longitudinal axis L. be moved. This makes it possible, for example, for a roller rocker arm, not shown here, which the individual cam tracks of the cam elements 13.1 , 13.2 one of the cam modules 4.1 until 4.4 (see also 4th ) taps off a cam track of a cam element 13.1 or. 13.2 to another cam track of another cam element 13.1 or. 13.2 of the same cam module 4.1 until 4.4 is moved.

While in the 2 who is already in the 1 bayonet lock shown B. between the shaft elements 3.1 or. 3.2 and the sliding element 5 is shown in the 3 a connection not according to the invention between the respective shaft elements 3.1 or. 3.2 and the sliding element 5 shown. With the reference number S. consequently, a welded connection is shown, which in a region of the welded sections 11 or. 12th between the sliding element 4 and the respective shaft elements 3.1 and 3.2 is designed to provide a material connection between the shaft elements 3.1 or. 3.2 and the sliding element 5 to enable. With the reference number 11 In particular, a weld section is shown, which at a distal end of the shaft element 3.1 or. 3.2 is formed, which - at least when assembling the camshaft module - in the direction of the sliding element 5 is aligned. With the reference number 12th is advantageous a welded section of the sliding element 5 shown, which at the respective two distal ends of the sliding element 5 is designed to with the respective shaft elements 3.1 or. 3.2 , especially with their welded sections 11 to come into operative connection.

In the 4th is in a side sectional view that in the 1 and 2 illustrated embodiment of the camshaft module according to the invention 1 shown. Here is the different design of the cam elements 13.1 and 13.2 of the respective cam modules 4.1 until 4.4 shown. The cam elements 13.1 and 13.2 of a cam module 4.1 until 4.4 have mutually different cam tracks. There is also a locking device 30th shown which an engaging element 31 as well as one with the engagement element 31 interactive spring element 32 having. The spring element 32 is advantageously a compression spring, the engagement element 31 is advantageously a sphere or a spherical element. The locking device 30th extends within a recess or bore 14 of the structured shaft 20th . The bore 14 is advantageously a blind bore, so that the spring element 32 is held by means of the bottom of the blind hole. The spring element 32 extends along the bore 14 in the direction of the corresponding shaft element 3.1 or. 3.2 . The engagement element 31 is arranged at least in sections in the bore 14 and advantageously extends at least in sections out of the bore 14 in the direction of the respective shaft element 3.1 or. 3.2 . To be in engagement with the corresponding shaft element 3.1 or. 3.2 to get, has the corresponding shaft element 3.1 or. 3.2 Recesses 33.1 or. 33.2 on which in the direction of the longitudinal axis L. considered are formed next to one another (formed one after the other). The locking device 30th the camshaft module is used advantageously for this purpose 1 in a defined position - viewed in the axial direction - at least during the rotation of the entire camshaft 2 around the longitudinal axis L. to lock. When the camshaft module is shifted 1 in the axial direction along the longitudinal axis L. consequently becomes the spring element 32 compressed so that the engagement element 31 from one of the recesses 33.1 or. 33.2 into the other recess 33.2 or. 33.1 is introduced.

List of reference symbols

1

Camshaft module

2

camshaft

3.1,3.2

Wave element

4.1 - 4.4

Cam module

5

Sliding element

5.1

Support tube

5.2

Shift gate

5.3

Guide groove

6th

Coupling element

7th

Coupling counter element

8th

Wave module

10.1,10.2

Storage bridge

11

Welding section of the shaft elements

12th

Welding section of the sliding element

13.1, 13.2

Cam element

20th

structured wave

21

Surveys

22nd

Indentations

30th

Locking device

31

Engagement element

32

Spring element

33.1,33.2

Recess

B.

Bayonet connection

L.

Longitudinal axis

S.

Welded joint

Claims (5)

Camshaft module (1) having a camshaft (2) with two shaft elements (3.1, 3.2) and at least one cam module (4.1, 4.2, 4.3, 4.4) arranged on at least one of the shaft elements (3.1, 3.2), as well as a sliding element (5) for Moving the camshaft (2) along its longitudinal axis (L), characterized in that the sliding element (5) has a support tube (5.1) with a geometrical configuration comparable to that of the shaft elements (3.1, 3.2) with regard to the inside diameter and the outside diameter, and a support tube (5.1) by means of the Support tube (5.1) has shift gate (5.2) carried, the sliding element (5) coupling elements (6) and each of the shaft elements (3.1, 3.2) having at least one coupling counter element (7), one of the coupling elements (6) on one of the distal Ends of the support tube (5.1) is designed so that the sliding element (5) can be arranged between the shaft elements (3.1, 3.2) in such a way that one of the coupling elements te (6) of the sliding element (5) interacts positively with a corresponding coupling counter element (7) of one of the shaft elements (3.1, 3.2) in order to prevent axial displacement of the sliding element (5) relative to the shaft elements (3.1, 3.2), with each one of the coupling elements (6) forms a bayonet lock (B) with one of the coupling counter elements (7). Method for assembling a camshaft module (1) according to Claim 1 , comprising the steps: - Positioning the shaft elements (3.1, 3.2) within a bearing frame in such a way that each of the shaft elements (3.1, 3.2) is supported by means of a bearing bridge (10.1, 10.2) of the bearing frame and is arranged at a distance from one another, - Arranging at least one cam module (4.1, 4.2, 4.3, 4.4) on at least one of the shaft elements (3.1, 3.2), - Positioning the sliding element (5) between the spaced apart shaft elements (3.1, 3.2) in such a way that a through-hole extending through the sliding element (5) extends coaxially to through-holes extending through the shaft elements (3.1, 3.2), and rotating at least the Sliding element (5) around its longitudinal axis (L) or the shaft elements (3.1, 3.2) around their longitudinal axis (L) to create a positive connection between the coupling elements (6) of the sliding element (5) and the respective counter-coupling element (7) of the shaft elements ( 3.1, 3.2). Procedure according to Claim 2 , characterized by the further step that before the arrangement of the cam module (4.1, 4.2, 4.3, 4.4), a structured shaft (20) is inserted through through-holes in the shaft elements (3.1, 3.2) for angular alignment of the shaft elements (3.1, 3.2) . Procedure according to Claim 3 , characterized by the further step that after the cam module (4.1, 4.2, 4.3, 4.4) has been arranged, the structured shaft (20) is pushed out of the through-holes in the shaft elements (3.1, 3.2). Procedure according to Claim 2 , characterized by the further step that after connecting the sliding element (5) to the shaft elements (3.1, 3.2) a structured shaft (20) into the through-holes of the shaft elements (3.1, 3.2) and the sliding element (5) for angular alignment of the mounted Camshaft module (1) is inserted.

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