WO2019158296A1 - Steering device comprising a steering sensor unit for inductive detection of at least one piece of steering information - Google Patents

Abstract

The invention relates to a steering device comprising a steering shaft (12) which is mounted such that it can rotate about a steering axis (10), comprising a closing cover (14) which provides a sensor-receiving region (16) and is designed to close an assembly opening (18) of a steering gear box (20) for at least partially receiving the steering shaft (12), in a mounted state, and comprising a steering sensor unit (22) for inductive detection of at least one piece of steering information, which is at least partially arranged in the sensor-receiving region (16) of the closing cover (14). According to the invention, the steering sensor unit (22) comprises at least one sensor element (24) which is secured to the closing cover (14).

Description

 description

title

 Steering device with a steering sensor unit for inductive detection at least one steering information

State of the art

The invention relates to a steering device according to the preamble of claim 1. An.

In addition, the invention relates to a steering system according to claim 9, a Ver schlussdeckelbaugruppe according to claim 10 and a method for mounting a steering apparatus according to claim 12.

From the prior art, such as DE 199 41 464 Al and / or DE 101 21 870 Al, steering systems for motor vehicles with inductive steering sensors for determining a steering angle and / or a force exerted on a steering shaft steering torque are known. Such steering sensors usually comprise a arranged on a steering shaft sensor housing, a housing arranged in the sensor sensor element, for example in the form of a printed circuit board with at least one sensor coil, and at least one cooperating with the sensor element rotor element, which is rotatably out with the steering shaft is formed.

In an assembly process, the sensor housing is gescho ben on the steering shaft and attached at least one rotor element to the steering shaft. Connecting ßend the steering shaft is used together with the sensor housing and the Rotorele ment in a mounting opening of a steering gear housing. In this case, the assembly process has to take place shortly before the sensor housing enters the steering gear. Be immersed immersion housing so that a sensor cable can be manually connected by a fitter with the sensor housing or the sensor element. Subsequently, the steering shaft is pushed to the end position and the mounting hole sealed fluid-tight by means of a cap.

The known structure of the steering sensor thus leads to a complicated and time-consuming assembly process, which in particular includes a holding step in the insertion of the sensor cable and a cumbersome threading of the sensor cable through a hole in the steering gear housing.

The object of the invention is in particular to provide a steering device with improved properties in terms of efficiency. On task is solved by the characterizing features of claim 1 and the features of claims 9, 10 and 12, while advantageous Ausgestal obligations and developments of the invention can be taken from the dependent claims.

Disclosure of the invention

The invention relates to a steering device with a steering shaft rotatably mounted about a steering shaft, with a, in particular the steering shaft in order circumferential direction encompassing closure cap, which provides a sensor receiving area and is provided, in an assembled state, a mounting opening of a steering gear housing for at least partially Aufnah me the steering shaft, in particular fluid-tight, to close, and at least partially and preferably at least a majority in the Senso raufnahmebereich the closure lid arranged steering sensor unit for, in particular contactless, inductive detection of at least one Lenkinforma tion.

It is proposed that the steering sensor unit comprises at least one sensor element, which is fixed, preferably non-detachable, connected to the closure cap. In particular, an efficiency, in particular a mounting efficiency, a component efficiency, a construction space efficiency and / or a cost efficiency, can be improved by this refinement. In particular, a can Assembly process can be greatly simplified, with advantageous cycle time can be lowered by several seconds. In addition, an advantageous automation of the assembly process can be achieved, largely omitted beitsschritte on manual Ar and a downtime of Fertigungsan plants can be reduced. In addition, advantageously increased flexibility of the steering device and / or begehäuse on additional holes in a steering gear be omitted. Furthermore, advantageously a service life and / or a fatigue strength of the steering device can be improved.

In this context, a "steering device" should be understood to mean, in particular, at least one part, in particular a subassembly, of a steering system, in particular a vehicle and preferably a motor vehicle. The steering system in particular comprises a steering gear housing with a receiving opening for at least partially receiving the steering shaft and advantageously for at least partially receiving the steering sensor unit. Dar beyond the steering system can include other components and / or assemblies include sen, such as at least one, in particular in the Lenkgetriebege housing arranged and advantageously designed as a rack Steering Stel lelement and / or at least one, in particular connected via the steering shaft with the steering actuator, steering handle , The steering shaft is in particular designed in several parts and comprises at least one input shaft, preferably a steering spindle, and at least one separately formed from the input shaft and in particular rotatable relative to the input shaft about the steering axis, output shaft, in particular a steering pinion. Furthermore, the closure lid Ver advantageously cup-shaped and / or cup-shaped. Particularly advantageous is the closure cap integrally formed and has before given to a, in particular sealed and / or sealable, passage opening for the steering shaft, in particular the input shaft on. In addition, the closure lid in particular at least one, advantageously designed as a plug connector, which is provided for coupling a sensor cable of the steering system. The connector may be arranged such that a plug-in direction for coupling the sensor cable with respect to the steering axis in the axial direction, in the radial direction, in the tangential direction and / or in any other direction. In principle, however, the closure cover can also have a plurality of plug connectors, which advantageously Redundancy requirements can be fulfilled. In particular, the closure lid thus replaces an additional sensor housing in the present case. By "intended" is intended to be understood in particular specially designed and / or equipped. Under that an object is seen for a particular function before, should be understood in particular that the object satisfies this be certain function in at least one application and / or operating state and / or performs. Furthermore, the term "integral" should be understood to mean in particular at least materially bonded and / or formed with one another. The material bond can be produced for example by an adhesive process, a Anspritz process, a welding process, a soldering process and / or another process. Advantageously, however, should be understood as being integrally formed in one piece and / or in one piece. Preferably, this is made one piece from a single blank, a mass and / or a casting, such as in an extrusion process and / or an injection molding process.

In addition, under a "steering sensor unit" in particular one, in particular special the steering shaft in the circumferential direction encompassing sensor unit is the verstan which is intended to correlate based on a rotation of the input shaft relative to the output shaft at least one, in particular with egg ner actuation of the steering handle To collect steering information. The steering information is preferably a steering angle and / or a, in particular by means of the steering handle applied to the steering shaft, steering torque. For detecting the steering information, the steering sensor unit comprises, in particular, the sensor element and, advantageously, at least one rotor element to be engaged with the sensor element. The sensor element comprises in particular at least one sensor coil, in particular in the form of an exciter and / or receiver coil, and preferably at least one carrier element, for example a circuit board and / or a printed circuit board, for holding the sensor coil and for connecting the sensor coil to the closure lid. In addition, the sensor element may comprise at least one, in particular on the carrier element to parent, excitation and / or evaluation, which is insbesonde re electrically connected to the sensor coil. Particularly advantageously, the sensor element is firmly connected to a sensor receiving area facing the inner side of the closure lid. The sensor element can in particular special non-positively and / or positively connected to the closure lid, such as by means of a plug connection, a clamping connection and / or a screw connection. Preferably, however, the sensor element is at least materially connected to the closure lid, for example by means of an adhesive bond, a fusion bond, a cast connection, a welded connection and / or a spray connection. Furthermore, the sensor element surrounds the steering shaft in the circumferential direction, in particular at least to a large extent and advantageously completely. The rotor element is advantageously designed to be at least partially conductive and / or magnetically permeable and, in particular, to influence the sensor coil. Advantageously, the rotor element is provided to change depending on a relative direction from the rotor element to the sensor element sensor signal Sen sensor coil. Furthermore, the rotor element is in particular rotatably formed with the steering shaft and surrounds the steering shaft in the circumferential direction in particular special to at least a large part and advantageous completely. In this case, the rotor element may in particular non-positively and / or positively connected to the steering shaft, such as by means of a press connection and / or a caulking. Alternatively, however, the rotor element may also be stoffschlüs sig connected to the steering shaft, such as bond by means of a Klebever, a fusion, a cast connection, a Schweißverbin tion and / or a spray connection. Furthermore, the rotor element is preferably stepped before, in particular with at least one stage and advantageously with at least two stages formed. In this context, the ro torelement comprises in particular a sensor element associated Rotorab section, which in particular has at least one conductive and / or magnetically permeable rotor blades, and one of the steering shaft associated and advantageous to the rotor portion at least substantially perpendicular arranged mounting portion, which in particular for attachment is provided on the steering shaft. At least 55%, advantageously at least 65%, preferably at least 75%, particularly preferably at least 85% and particularly advantageously at least 95% are to be understood by the term "for at least a large part". Further, the expression "at least substantially perpendicular" should in particular define an orientation of a direction relative to a reference direction, wherein the direction and the reference direction, in particular in one plane, an angle between 82 ° and 98 °, advantageously between 85 ° and 95 ° and more preferably between 88 ° and 92 °. In addition, the expression "fluid-tight" in the present case, in particular in the context of tolerable tolerances and / or ferti supply-technical possibilities to be understood fluid-tight.

It is also proposed that the steering shaft comprises at least one input shaft, in particular the previously mentioned input shaft, and at least one output shaft separately formed from the output shaft, in particular the previously mentioned output shaft, and the steering sensor unit to at least two rotor elements cooperating with the sensor element summarizes. Preferably, a first rotor element of the rotor elements is rotatably connected to the input shaft and a second rotor element of the rotor elements rotatably connected to the output shaft. In this way, in particular a particularly simple and / or accurate detection of the steering information can be achieved.

The rotor elements, in particular rotor sections of the respective rotor elements, can be arranged, for example, on a side of the sensor element facing the inside of the closure lid and / or the steering handle. In addition, the rotor elements, in particular rotor sections of the respective rotor elements, can in principle also be arranged on a side of the sensor element facing away from the inside of the closure lid and / or facing the steering actuating element. Advantageously, however, it is proposed that the sensor element in at least one direction perpendicular to the steering axis be seeks between the first rotor element and the second rotor element and / or at least disposed between rotor sections of the respective rotor elements. In this way, in particular an advantageously compact Lenkvor direction can be provided.

In addition, it is proposed that the first rotor element is stepped with a sensor element associated with the rotor portion and one of the input shaft associated with a mounting portion is formed, wherein the mounting portion extending from the rotor portion in the direction of the output shaft. In this way, in particular, an advantageously high accessibility can be achieved, whereby in particular a simple attachment of the first rotor element to the input shaft can be achieved. If the attachment portion is at least partially led out of the sensor receiving area of the closure cap, assembly in particular can be simplified, since the first rotor element is freely accessible for attachment to the input shaft. In this case, the first rotor element, in particular special of the attachment portion, viewed in at least one direction perpendicular to the steering axis, at least partially free of an overlap with the closure cap.

Furthermore, it is proposed that the second rotor element is stepped out and is connected to the output shaft such that an attachment point of the first rotor element on the input shaft in at least one direction Rich perpendicular to the steering axis considered at least partially, preferably at least a majority and more preferably completely, is covered by the two te rotor element. Under the phrase that "an attachment point of the first rotor element is viewed in at least one direction perpendicular to the steering axis at least partially covered by the second rotor element" should be understood in particular that at least one of the attachment point outgoing and in particular arranged perpendicular to the steering axis halfway the second Rotor element cuts. Under the phrase that "an attachment point of the first rotor member in at least one direction perpendicular to the steering axis considered ver completely covered by the second rotor element ver is to be understood in particular that all of the fastening agency outgoing and in particular arranged perpendicular to the steering axis te half-straight the cutting second rotor element. As a result, a space requirement can be further limited and an almost space-neutral Ausgestal tion can be achieved insbesonde re.

In a further embodiment of the invention, it is proposed that the steering sensor unit for direct electrical contacting of the sensor element comprises at least one connecting element, which is formed integrally with the United closure lid. Preferably, the connecting element is injected into the closure cap. The connecting element is in particular arranged at least partially in the sensor receiving region of the closure lid and advantageously borders directly on an inner side of the closure lid on. The connecting element in particular connects the sensor element with the plug connector of the closure lid. Furthermore, the connection element can be particularly flexible, such as a cable, or advantageously rigid, such as a metal contact and / or advantageously as a stamped grid, be formed. In this way, in particular, an advantageously space-saving contacting of the sensor element can be achieved.

According to a further embodiment of the invention, it is further proposed that the steering device has at least one cover element which is provided to cover the sensor receiving region of the closure lid at least partially and preferably at least to a large extent. Advantageously, the cover is arranged in at least one direction perpendicular to the steering axis considered between the sensor element and the second Rotorele ment. In this way, in particular, an advantageously high operating safety and / or an advantageous protection of the steering sensor unit can be achieved.

Furthermore, the invention relates to a closure cover assembly, in particular the aforementioned steering device, with a closure cover, in particular special the aforementioned closure lid, which mebereich a Sensoraufnah provides and is intended to me in an assembled state, a mounting opening of a steering gear housing for at least partially Aufnah me Steering shaft, in particular fluid-tight, to close, and with at least one sensor element of a steering sensor unit, in particular the previously mentioned th sensor element of the aforementioned steering sensor unit for, in particular contactless, inductive detection of at least one steering information, which is fixed, preferably inseparable, connected to the closure lid. Preferably, the closure lid assembly further comprises at least one element of the steering element Lenkele, in particular the aforementioned previously Ro torelement, which is held by the sensor element movable and in particular un losierbar in the sensor receiving area, wherein the rotor element at least one attachment portion for connecting the rotor element with the steering shaft has, which is at least partially led out of the sensor receiving area of the closure lid. In this context, a "closure cap assembly" is to be understood as meaning, in particular, a preassembled subassembly of the steering device, which at least the Cover and at least part of the steering sensor unit comprises. In particular, in the present case, the closure lid assembly comprises at least the closure lid, the sensor element, in particular in the sensor receiving region of the closure lid, and advantageously the first rotor element, in particular at least a large part in the sensor receiving region of the closure lid. Particularly preferably, the closure lid assembly may also comprise the connecting element for direct electrical contacting of the sensor element and / or the cover. In this way, in particular, the advantages already mentioned above can be achieved. In this case, in particular through the provision of a premoined subassembly in the form of the closure lid assembly, assembly efficiency and / or cost efficiency can be improved.

In addition, a method for mounting the aforementioned steering device is proposed, in which in an assembly step, the first rotor member rotatably connected to the input shaft and in a, in particular the assembly step following, further assembly step, the second rotor member rotatably connected to the output shaft. Preferably, in a first assembly step, the closure cover assembly at least comprising the Sen sorelement and the first rotor element produced or provided in a second assembly step, the closure cover assembly ge on the steering shaft pushed in a third assembly step, the first rotor member rotatably connected to the input shaft, in a fourth Assembly step, the second Rotorele element rotatably connected to the output shaft connected in a fifth assembly step, the steering shaft in the mounting hole of the steering gear housing, fluid-tightly sealed in a sixth assembly step, the mounting opening by means of the Verschlussde and connected in a seventh mounting step, the Sensorka bel with the connector of the closure lid , In this way, in particular, the advantages already mentioned above can be achieved. In particular, an efficiency, in particular an assembly efficiency, a component efficiency, a construction space efficiency and / or cost efficiency, can be improved.

The steering device, the steering system, the closure lid assembly and the method for mounting the steering device should not be limited to the above-described application and embodiment be. In particular For example, the steering device, the steering system, the closure cap assembly, and the method of assembling the steering device to perform a functionality described herein may have a different number than a number of individual elements, components, and units referred to herein.

drawings

Further advantages emerge from the following description of the drawing. In the drawings, an embodiment of the invention is shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

1 is an exemplary steering system with a steering device in egg ner schematic representation,

 2 shows a steering shaft of the steering device and a steering sensor unit of the steering device in a schematic sectional view, where only one half of the steering shaft and the Lenksensorein unit are shown,

 Fig. 3 is a closure cover assembly of the steering device in a schematic sectional view and

 Fig. 4 is an exemplary flow diagram of a method for Mon days of the steering device.

Description of the embodiment

Figure 1 shows a purely exemplary steering system 44 in a schematic Dar position. The steering system 44 is formed out as an electrically assisted steering system and therefore has an electric power assistance. Furthermore, the steering system 44 is intended for use in a vehicle (not shown), in particular a motor vehicle. The steering system 44 has in one built state an operative connection with vehicle wheels of the vehicle and is intended to influence a direction of travel of the vehicle.

The steering system 44 comprises a steering handle 48, designed in the present case by way of example as a steering wheel, for applying a manual steering torque and a steering gear 50 known per se, which is intended to convert a steering input on the steering handle 48 into a steering movement of the vehicle wheels. For this purpose, the steering gear 50 comprises a steering gear housing 20 and a steering control element 52 arranged in the steering gear housing 20.

In addition, the steering system 44 comprises a steering device (see in particular also Figure 2). The steering device comprises a known Lenkwel le 12. The steering shaft 12 is rotatably mounted about a steering axis 10. The Lenkwel le 12 is at least substantially rotationally symmetrical to the steering axis 10 is formed. The steering shaft 12 connects the steering handle 48 with the Lenkge gear 50, in particular the steering actuator 52. Furthermore, the steering shaft 12 is constructed in several parts.

The steering shaft 12 includes an input shaft 26. The input shaft 26 is associated with the steering handle 48. The input shaft 26 is rotatably mounted about the steering axis 10. The input shaft 26 is formed as a steering spindle. The input shaft 26 is further in response to an operation of the steering hand 48 rotatable.

In addition, the steering shaft 12 has an output shaft 28. The output shaft 28 is associated with the steering gear 50. The output shaft 28 is formed separately from the input shaft 26. The output shaft 28 is rotatably mounted about the steering axis 10. The output shaft 28 is rotatable relative to the input shaft 26. The output shaft 28 is formed as a steering pinion. The output shaft 28 is provided to forward a rotation of the input shaft 26 to the steering gear 50, in particular the steering actuator 52.

For connecting the input shaft 26 and the output shaft 28, the steering shaft 12 also includes a torsion element 54. The torsion element 54 is in the forward lying case designed as a torsion bar and arranged at least a majority in a receiving range of the input shaft 26.

In addition, the steering device comprises a closure lid 14. The closure lid 14 is integrally formed. The closure lid 14 is formed top-shaped and / or cup-shaped and provides a Sensoraufnahmebe rich 16 ready. The closure lid 14 also has, for example by means of an injected sealing element 56, sealed, passage opening 58 for the input shaft 26. In the assembled state, the closure lid 14 is disposed on the input shaft 26 and surrounds the input shaft 26 in the circumferential direction Rich. The closure cover 14 is provided to close in the assembled state, a mounting opening 18 of the steering gear housing 20 for receiving the output shaft 28 fluid-tight. For this purpose, the closure lid 14 has a flange portion 60, which in the assembled state with a, the mounting opening 18 surrounding further flange portion 62 of the Lenkgetriebegehäu ses 20 cooperates.

Furthermore, the closure lid 14 has at least one plug connector 64. The connector 64 is formed on an outer side of the closure lid 14. The connector 64 is also exemplary forms out as a socket. The connector 64 is provided for coupling to a sensor cable 66 of the steering system 44. The connector 64 may be angeord net such that a plug-in direction for coupling the sensor cable 66 with respect to the steering axis 10 in the axial direction, in the radial direction, in the tangential direction Rich and / or in any other direction. Alternatively, however, a closure lid Ver could also be designed in several parts. In addition, a plug connector could be designed as a plug element. Furthermore, a Verschlussde could ckel basically also have multiple connectors, which advantageously redundancy requirements can be met.

The steering device soreinheit 22 is at least partially disposed in the sensor receiving portion 16 of the United closure lid 14, wherein the closure lid 14 acts as a sensor housing, so that can be dispensed ver on a separate, additional sensor housing. The steering sensor unit 22 has an operative connection with the Steering shaft 12 on. The steering sensor unit 22 is arranged on the steering shaft 12 and surrounds the steering shaft 12 in the circumferential direction. The steering sensor unit 22 is at least substantially rotationally symmetrical to the steering axis 10. The steering sensor unit 22 is further designed as an inductive steering sensor unit and for inductive detection of at least one, in particular with a supply of the control Lenki steering 48 correlated steering information provided. In the present case, the steering sensor unit 22 is provided, based on a Verdre hung the input shaft 26 relative to the output shaft 28, the at least one steering information, in particular a steering angle and / or a steering torque to detect.

For this purpose, the steering sensor unit 22 comprises a sensor element 24 and at least one cooperating with the sensor element 24 rotor element 30, 32. In the present case, the steering sensor unit 24 comprises two interacting with the sensor element 24 rotor elements 30, 32, wherein the sensor element 24 in at least one direction perpendicular to the steering axis 10 considered between the rotor elements 30, 32 is arranged. The rotor elements 30, 32 are provided to change a sensor signal of the sensor element 24 in dependence on a relative orientation of the rotor elements 30, 32 to the sensor element 24. In principle, however, a sensor element could also be offset in the direction of an input shaft or in the direction of an output shaft to Rotorele elements and therefore not be arranged between the rotor elements.

The sensor element 24 is integrally formed. The sensor element 24 is fully constantly arranged in the sensor receiving area 16. The sensor element 24 is fixed, in particular insoluble, connected to the closure lid 14. In the present case, the sensor element 24 is fixedly connected to the sensor receiving area 16 facing inside of the closure lid 14. The sensor element 24 is cohesively with the closure lid 14 verbun the, for example by means of an adhesive bond. The sensor element 24 is further connected to the closure cover 14 such that the sensor element 24 is arranged in the direction of the steering axis 10 in the amount of the input shaft 26 and the input shaft 26 engages in the circumferential direction. Alternatively or additionally, a sensor element may also be provided by means of a fusion connection, a casting Connection, a welded joint, a spray connection or a positive and / or positive connection to be connected to a sensor cover.

In addition, the sensor element 24 has at least one sensor coil (not shown). The sensor coil is designed as a per se known exciter and / or Emp catcher coil. In addition, the sensor element 24 has a carrier element 68 for holding the sensor coil and for connecting the sensor coil to the closure lid 14. The carrier element 68 is designed as a printed circuit board. Advantageously, the sensor element 24 may also have a plurality of sensor coils. In addition, the sensor element 24 may include an on the carrier element 68 to ordered and known per se exciter and / or evaluation circuit (not shown), which is electrically connected to the sensor coil.

A first rotor element 30 of the rotor elements 30, 32 is integrally formed. The first rotor element 30 is disposed at least a large part in the sensor receiving region 16. The first rotor element 30 is rotatably connected to the input shaft 26. The first rotor element 30 is in the assembled state to be inextricably connected to the input shaft 26. In the present case, the first rotor element 30 is connected to the input shaft 26 by means of a caulking connection. The first rotor element 30 is collar-shaped and surrounds the input shaft 26 in the circumferential direction. In addition, the first rotor element 30 at least partially made of a conductive and / or mag nically permeable material. In the present case, the first 30 Rotorele ment example of metal.

Furthermore, the first rotor element 30 is stepped and has exactly one step in the present case. In this case, the first rotor element 30 has a rotor section 34 assigned to the sensor element 24 and a fastening section 36 assigned to the input shaft 26. The rotor section 34 extends in the radial direction with respect to the steering shaft 12 and is provided for influencing the sensor element 24. The Befestigungsab section 36 extends in the direction of the steering axis 10 and is provided for attachment to the input shaft 26. The attachment portion 36 is thus arranged perpendicular to the rotor portion 34 and extends from the rotor portion 34 in the direction of the output shaft 28. The Befestigungsab- Section 36 is at least partially led out of the sensor receiving area 16. Alternatively, it is conceivable to form a first rotor element in several parts and / or of any other material which is conductive and / or magnetically permeable at least in one rotor section. In this context, in particular, it is also conceivable to connect a first rotor element by means of a fusion connection and / or an adhesive connection or the like to an input shaft. Furthermore, a first rotor element could in principle also have at least two stages and / or be arranged completely in a sensor receiving region of a closure lid.

A second rotor element 32 of the rotor elements 30, 32 is integrally formed. The second rotor element 32 is non-rotatably connected to the output shaft 28. The second rotor element 32 is in the assembled state inextricably connected to the output shaft 28. In the present case, the second rotor element 32 is connected to the output shaft 28 by means of a caulking connection. The second rotor element 32 is formed collar-shaped and surrounds the output shaft 28 in the circumferential direction. In addition, the second rotor element 32 is at least partially made of a conductive and / or magnetically permeable material. In the present case, the second rotor element 32 is made of metal at play.

Furthermore, the second rotor element 32 is stepped and has two stages in the present case. In this case, the second rotor element 32 has a further rotor section 70 assigned to the sensor element 24 and a further fastening section 72 assigned to the output shaft 28. The wei tere rotor portion 70 extends in the radial direction with respect to the steering shaft 12 and is provided to influence the sensor element 24. The further rotor section 70 is thus aligned parallel to the rotor section 34. The further attachment portion 72 extends in the direction of the steering axis 10 and is provided for attachment to the output shaft 28. The further fastening portion 72 is consequently arranged perpendicular to the further rotor portion 70 and extends starting from the further rotor portion 70 in the direction of the steering adjustment element 52. The further attachment portion 72 therefore extends from the further rotor portion 70 in a same direction as the attachment portion 36th In the present case, the second rotor element 32 is connected to the output shaft 28 in such a way that the further rotor section 70 is arranged in the direction of the steering axis 10 at the level of the input shaft 26. In addition, the second rotor element 32 is connected to the output shaft 28 in such a manner that a fixing point 38 of the first rotor element 30 on the input shaft 26 is completely covered by the second rotor element 32 in at least one direction perpendicular to the steering axis 10. Alternatively, it is conceivable to form a second rotor element in several parts and / or of any other material which is conductive and / or magnetically permeable at least in a further rotor section. In this context, it is also conceivable in particular to connect a second rotor element by means of a fusion connection and / or an adhesive connection or the like to an output shaft. Furthermore, a second rotor element could in principle also have exactly one step or at least three steps.

For direct electrical contacting of the sensor element 24 and insbesonde re for connecting the sensor element 24 with the connector 64, the steering sensor unit 22 further comprises an electrical connection element 40. The connecting element 40 is rigid. The connecting element 40 is designed as a stamped grid. The connecting element 40 is formed integrally with the closure lid 14. In the present case, the connecting element 40 is injected into the closure cap 14. Furthermore, the connecting element 40 is at least partially disposed in the sensor receiving area 16 and thereby directly adjoins the inside of the closure lid 14. The Ver connecting element 40 establishes an electrical connection between the inside of the closure lid 14 and the outside of the closure lid 14. In principle, however, a steering sensor unit could also have a plurality of connecting elements, which can advantageously interact to make electrical contact with a sensor element.

Further, the steering device in the present case comprises a, in particular opti onal, cover 42. The cover 42 is formed in the present case as a cover. The cover member 42 is intended to cover the sensor receiving area 16, so that an advantageous protection of Steering sensor unit 22 and in particular arranged in the sensor receiving portion 16 components of the steering sensor unit 22, in particular the Sensorele element 24, the first rotor member 30 and the connecting element 40, it is sufficient. For this purpose, the cover 42 is arranged in at least one direction perpendicular to the steering axis 10 viewed between the sensor element 24 and the second rotor element 32. The cover 42 is advantageously integrally connected to the closure lid 14. Alternatively, however, it is also conceivable to non-positively and / or positively connect a cover element with a closure lid Ver. In addition, a cover could in principle be completely dispensed with.

Further, in the present case, at least the closure cap 14, the sensor element 24, the first rotor element 30, the connection element 40 and the optional cover element 42 form a preassembled closure cap assembly 46, whereby an assembly efficiency and / or a cost efficiency can be improved. In Figure 3, the closure lid assembly 46 of the Lenkvorrich device is shown. The closure cap assembly 46 thus forms a separate, preassembled subassembly of the steering device. In this case, the first ro torelement 30 is held by the sensor element 24 movable and in particular unver lierbar in the sensor receiving area 16, in particular such that the attachment portion 36 of the first rotor member 30 is at least partially led out of the sensor receiving area 16. Alternatively, however, a cap assembly could also include other components and / or other construction parts. In this context, it is conceivable, for example, for a closure lid assembly to comprise at least one further rotor element and / or to form a closure lid assembly without a first rotor element, a connection element and / or a cover element.

In the following, an exemplary method for mounting the steering device is described with reference to FIG.

In a first assembly step 80 of the closure lid 14, the Sen sorelement 24, the first rotor member 30, the connecting element 40 and the cover 42, a preassembled subassembly in the form of Ver schlussdeckelbaugruppe 46 produced. In a second assembly step 82, the closure lid assembly 46 is pushed onto the steering shaft 12.

In a third assembly step 84, the first rotor element 30, in particular the attachment portion 36 of the first rotor member 30, rotatably connected to the input shaft 26, in particular by means of the caulking. In this assembly step, it is particularly advantageous that the Befestigungsab section 36 is at least partially led out of the sensor receiving portion 16 of the United closure lid 14, whereby the first rotor member 30 is freely accessible and particularly easy to the input shaft 26 can be attached. In principle, however, it is also conceivable to arrange a first rotor element completely in a sensor receiving region of a closure cover and to connect the first rotor element, for example by means of a laser welding connection and / or a latching connection or the like, in a rotationally fixed manner to an input shaft.

In a fourth assembly step 86, the second rotor element 32, in particular the further attachment portion 72 of the second rotor member 32, rotatably connected to the output shaft 28, in particular by means of Verstemm connection. Subsequently, a calibration and / or programming of the steering sensor unit 22 can take place. For this purpose, at least in this assembly step freely accessible electrical interface (not shown), which may be arranged at example on the sensor element 24, the connecting element 40 and / or the connector 64 are used.

In a fifth assembly step 88, the output shaft 28 is inserted into the opening 18 Montageöff the steering gear housing 20. In this case, the output shaft 28 is inserted up to an end position, so that the closure lid 14 rests against the steering gear housing 20.

In a sixth assembly step 90, the mounting opening 18 is closed fluid-tight by means of the closure lid 14, for example by means of a screw connection and / or a clamping connection. In a seventh assembly step 92, the sensor cable 66 is finally connected to the connector 64 of the closure lid 14.

The exemplary flowchart in FIG. 4 is intended to describe a method for assembling the steering device, in particular by way of example only. In particular special single assembly steps and / or a sequence of assembly steps may vary. It is also conceivable to provide additional assembly steps, such as example, an insertion of the cover 42, in particular if the cover 42 should not be part of the cap assembly 46. In addition, the first assembly step 80 could in principle also be dispensed with, for example if the preassembled closure lid assembly 46 is already commercially available and / or acquired.

Claims

claims 1. steering device with a about a steering axis (10) rotatably mounted steering shaft (12), with a closure cover (14) which provides a Senso raufnahmebereich (16) and is provided, in a mon-oriented state, a mounting opening (18) of a steering gear housing (20) for at least partially receiving the steering shaft (12) to verschlie Shen, and with an at least partially in the sensor receiving area (16) of the closure cover (14) arranged steering sensor unit (22) for inductive detection of at least one steering information, characterized in that the steering sensor unit (22) at least one sensor element (24) which is fixedly connected to the closure lid (14). 2. Steering device according to claim 1, characterized in that the steering shaft (12) at least one input shaft (26) and at least one of the input shaft (26) separately formed output shaft (28) to summarizes and the steering sensor unit (22) at least two with the Sensorele ment (24) cooperating rotor elements (30, 32), wherein a first rotor element (30) of the rotor elements (30, 32) rotatably with the input shaft (26) and a second rotor element (32) of the rotor elements (30, 32) rotatably is connected to the output shaft (28). 3. Steering device according to claim 2, characterized in that the sensor element (24) viewed in at least one direction perpendicular to the steering axis (10) between the first rotor element (30) and the second rotor element (32) is arranged. 4. Steering device according to claim 2 or 3, characterized in that the first rotor element (30) stepped with a sensor element (24) associated rotor portion (34) and one of the input shaft (26) associated with the attachment portion (36) is formed, wherein the attachment portion (36) extends from the rotor portion (34) toward the output shaft (28). 5. Steering device according to claim 4, characterized in that the fastening portion (36) at least partially out of the sensor receiving area (16) of the closure lid (14) is led out. 6. Steering device according to one of claims 2 to 5, characterized in that the second rotor element (32) stepped and of the type with the output shaft (28) is connected, that an attachment point (38) of the first rotor element (30) on the input shaft (26) viewed in at least teilwei se by the second rotor element (32) viewed in at least one direction perpendicular to the steering axis (10). 7. Steering device according to one of the preceding claims, characterized in that the steering sensor unit (22) for direct electrical contact contacting of the sensor element (24) comprises at least one connec tion element (40) which is formed integrally with the closure cover (14). 8. Steering device according to one of the preceding claims, characterized by at least one cover element (42), which in at least one direction perpendicular to the steering axis (10) viewed between the sensor element (24) and the second rotor element (32) is arranged and intended, the sensor receiving portion (16) of the closure lid (14) cover at least partially. 9. steering system (44) with a steering gear housing (20) which has at least one mounting opening (18), and with at least one Lenkvorrich device according to one of the preceding claims 10. Closure cover assembly (46), in particular a steering device according to one of claims 1 to 8, with a closure cover (14), wel cher a sensor receiving area (16) provides and is provided, in a mounted state, a mounting opening (18) of a steering gear housing (20) for at least partially receiving a steering shaft (12) to close, and with at least one sensor element (24) of a steering sensor unit (22) for inductive detection of at least one Lenkin formation, which is fixedly connected to the closure lid (14). 11. Closure cover assembly (46) according to claim 10, characterized by at least one rotor element (30) of the steering sensor unit (22), wel ches by the sensor element (24) movable in the Sensoraufnahmebe rich (16) is held, wherein the rotor element (30) at least a Be fastening portion (36) for connecting the rotor element (30) with the steering shaft (12), which at least partially from the sensor receiving range (16) of the closure lid (14) is led out. 12. A method for assembling a steering device according to one of claims 2 to 8, wherein in an assembly step, the first rotor member (30) rotatably with the input shaft (26) and in a further assembly step, the second rotor member (32) rotatably connected to the output shaft (28 ) is connected.