Bearing arrangement and hybrid gearbox arrangement

Abstract

Bearing arrangement (50) for a wheelset arrangement (44, 46), comprising a housing section (52), a housing cover (54), and a bolt (58) on which a first gear (46) of the wheelset arrangement (44, 46) is rotatably mounted, wherein the bolt (58) is fixed at one axial end to the housing cover (54) and wherein the bolt (58) is fixed at its other axial end to a bearing sleeve (60) connected to the housing section (52), characterized in that the bearing sleeve (60) has a bolt receptacle (68) arranged eccentrically with respect to a longitudinal axis (61) of the bearing sleeve (60), and in that the bearing sleeve (60) is arranged concentrically to a shaft (42) rotatably mounted on the housing section (52) and / or on the housing cover (54), and on which a second gear (44) is mounted which engages with the first gear (46).

Description

[0001] The present invention relates to a bearing arrangement for a wheelset arrangement, comprising a housing section, a housing cover and a bolt on which a first gear of the wheelset arrangement is rotatably mounted.

[0002] Furthermore, the present invention relates to a hybrid gear arrangement comprising a gear housing, an electric machine and a spur gear, and finally relates to a method for assembling such a hybrid gear arrangement.

[0003] In the field of motor vehicle drive trains, so-called spur gear transmissions are known, in which gears are mounted on rotatable shafts. Fixed gears are rigidly connected to a rotatable shaft. Loose gears are rotatably mounted on such a shaft. Gear sets are provided for setting gear ratios, each comprising a fixed gear and a loose gear that mesh with each other.

[0004] Furthermore, it is known in the field of powertrains to use electric machines as drive machines, especially in electric vehicles and in vehicles with hybrid powertrains.

[0005] Although the term hybrid powertrain generally implies that different types of drive motors are combined in one powertrain, for example, an internal combustion engine and an electric motor, the term hybrid transmission arrangement is not intended to be limited to a powertrain with such a hybrid transmission arrangement to requiring an internal combustion engine. Rather, a hybrid transmission arrangement can also consist solely of an electric motor as its drive motor.

[0006] In the field of dual-clutch transmissions, it is known to connect an electric motor to the input of one of the two sub-transmissions of such a dual-clutch transmission. Such a dual-clutch transmission has the advantage that purely electric driving is possible. Furthermore, it is possible to connect an internal combustion engine to the common input element of a dual-clutch assembly of such a transmission, thereby enabling combustion engine operation. A hybrid drive mode is also achievable in this way. Additional hybrid functions, such as recuperation, starting the internal combustion engine using the electric motor, etc., are also possible.

[0007] As mentioned, it is a known method in bearing arrangements to mount a gear on a shaft rotatably mounted in the gearbox housing. In this configuration, the shaft is typically rotatably mounted in the gearbox housing by means of two rolling bearings.

[0008] In the field of spur gear transmissions, it is also known to mount a deflection pulley for a reverse gear stage rotatably on a bolt. The bolt is typically fixed to the transmission housing by means of two screws that run perpendicular to the bolt axis.

[0009] A bearing arrangement using a shaft requires a lot of installation space. Securing a bolt to the gearbox housing necessitates fasteners such as screws, thus increasing material and assembly costs.

[0010] Against the above background, it is an object of the invention to provide an improved bearing arrangement for a wheelset arrangement, an improved hybrid gear arrangement and an improved method for assembling a gear arrangement.

[0011] The above problem is solved in the bearing arrangement mentioned at the outset by fixing the bolt at one axial end to the housing cover, with the bolt being fixed at its other axial end to a bearing sleeve that is connected to the housing section.

[0012] Furthermore, the above problem is solved by a hybrid gear arrangement comprising a gear housing, an electric machine and a spur gear transmission which is housed in the gear housing, wherein the electric machine is connected to a drive shaft on which a drive gear is mounted, wherein the drive gear is engaged with an intermediate gear, wherein the intermediate gear is engaged with a gear of the spur gear transmission and wherein the intermediate gear is mounted by means of a bearing arrangement of the type according to the invention.

[0013] Finally, the above problem is solved by a method for assembling a gear assembly, in particular of the type according to the invention, comprising the steps of assembling a bearing sleeve in a housing section, wherein the bearing sleeve has a first bolt receptacle, providing a bolt on which a gear is rotatably mounted, providing a housing cover having a second bolt receptacle, and assembling the bolt by fixing the housing cover to the housing section, wherein, in the assembled state, one axial end of the bolt is received in the first bolt receptacle and another axial end of the bolt is received in the second bolt receptacle.

[0014] This type of bearing arrangement offers space advantages compared to a conventional shaft design. Furthermore, it provides a compact and easy-to-install solution for supporting a gear, particularly an intermediate gear.

[0015] In hybrid transmission arrangements, such an intermediate gear allows the center distance between the electric machine and a transmission input, in particular to a gear set of the stepped transmission, to be bridged by means of a compact solution.

[0016] This results in high flexibility, a high degree of integration, and easy assembly.

[0017] The only bearing element required is a bearing sleeve for the bolt, which is connected to the gearbox section. Such a bearing sleeve is generally easier to install than a bolt using two or more screws.

[0018] The gear can be mounted on the bolt using any type of rolling bearing or rolling bearing arrangement. A combination of a ball bearing and a needle bearing is preferred.

[0019] The bolt can preferably be fixed between the housing cover and the bearing sleeve.

[0020] In one variant, the bolt can also be mounted “floating” on one side of the housing cover or on the housing section.

[0021] To reduce weight, the bolt can be provided with a hole in the center.

[0022] The task is thus completely solved.

[0023] Generally, it is conceivable that the bearing sleeve is integrally connected to the housing section. However, this may result in a complex casting mold for this housing section.

[0024] It is therefore advantageous if the bearing sleeve is provided as a separate component that is fixed in the axial direction between the housing section and the housing cover.

[0025] The axial fixing between the two existing gearbox housing components allows the bearing sleeve to be easily fixed in the axial direction. This also allows the bolt to be fixed axially in relation to the housing.

[0026] According to another preferred embodiment, the bearing sleeve has a bolt receptacle which is arranged eccentrically with respect to a longitudinal axis of the bearing sleeve.

[0027] This measure allows the bolt to be fixed eccentrically to the bearing sleeve. On the other hand, this embodiment also makes it easy to fix the bearing sleeve axially between the housing cover and the housing section.

[0028] It is particularly advantageous if a circumferential section of the bearing sleeve rests against an inner circumferential section of the housing section.

[0029] This allows the bearing sleeve to be stabilized against tilting movements around an axis perpendicular to the axis of the bolt.

[0030] In general, the bearing sleeve can be designed in the style of a bearing plate.

[0031] However, it is particularly advantageous if the bearing sleeve has an axial length greater than 20 mm.

[0032] Furthermore, it is preferred if the axial length of the bearing sleeve is at least 3 times, and in particular at least 5 times, the radial thickness of the bearing sleeve.

[0033] This measure can also lead to improved stability of the bearing sleeve, especially against tilting movements around an axis perpendicular to the axis of the bolt.

[0034] According to another preferred embodiment, the bolt receptacle is arranged in a central area between the axial ends of the bearing sleeve.

[0035] This measure can also improve the stable fixing of the associated bolt end.

[0036] Overall, it is advantageous if the bearing sleeve is arranged concentrically to a shaft which is rotatably mounted on the housing section and / or on the housing cover and on which a second gear is mounted which engages with the first gear.

[0037] By designing the bearing sleeve as a hollow component, the shaft can be guided through it. The shaft is preferably supported axially outside the bearing sleeve.

[0038] Furthermore, by fixing the bearing sleeve in the housing section or relative to the housing section and relative to the housing cover, an exact fixation of the bolt can be achieved, such that proper tooth engagement between the first and the second gear is possible.

[0039] According to a further preferred embodiment, which in conjunction with the preamble of claim 1 constitutes an invention in its own right, the first gear is connected to a hollow shaft section which extends on an axial side of the first gear and which surrounds the bolt.

[0040] In this embodiment, the bolt can also be mounted on one side without support.

[0041] Designing the first gear with such a hollow shaft section allows the gear to be mounted on the bolt via at least two axially spaced bearings. Furthermore, the design, in which the hollow shaft section extends along one axial side of the first gear, enables a compact construction.

[0042] It is particularly advantageous if the hollow shaft section is rotatably mounted on the bolt by means of a first and a second bearing, one of which is preferably designed to absorb radial and axial forces.

[0043] The radial bearing function of the main bearing absorbs the radial forces occurring during gear meshing. The axial bearing function of the main bearing can absorb axial forces, such as those that arise particularly when the first and second gears have helical teeth.

[0044] According to a further preferred embodiment, the main bearing is designed as a rolling bearing with an inner ring and an outer ring, wherein one of the rings is axially supported on the bearing sleeve and wherein the other of the rings is axially supported on a shoulder section of the hollow shaft section.

[0045] This measure allows the axial bearing function to be implemented in a structurally advantageous way.

[0046] The hollow shaft section can be designed as a straight section in the axial direction.

[0047] However, it is particularly advantageous if the hollow shaft section has a first bearing section with a first inner diameter and a second bearing section with a second inner diameter, the first inner diameter being larger than the second inner diameter.

[0048] By shaping the hollow shaft section in the manner of a “bell”, it is possible to implement the “nested” bearing of the bolt, thus saving axial installation space.

[0049] In other words, the bolt receptacle, which defines the associated end of the bolt, can extend at least partially into the hollow shaft section in the axial direction, thus saving axial installation space.

[0050] A bearing arrangement of the type described above is particularly suitable for supporting an intermediate gear of a gear set arrangement by means of which an electric machine is connected to a spur gear transmission by the intermediate gear being in engagement with a gear of the spur gear transmission.

[0051] The gear can be a loose gear, but it can also be a fixed gear.

[0052] The gear is preferably mounted on a gear shaft which is rotatably mounted in the gearbox housing parallel to the bolt and parallel to the drive shaft.

[0053] According to a preferred embodiment of the hybrid transmission arrangement, an axial end of the drive shaft is rotatably mounted on the housing cover.

[0054] This allows the housing cover to fulfill not only the function of securing the bolt, but also a function of supporting the drive shaft.

[0055] In the assembly method according to the invention, it is advantageous that the bolt can be mounted via the connection of the housing section and the housing cover, whereby the gear can be pre-mounted on the bolt.

[0056] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations or on their own, without leaving the scope of the present invention.

[0057] Exemplary embodiments of the invention are shown in the drawing and are explained in more detail in the following description. They show:

[0058] Fig. 1 a schematic representation of a drive train for a motor vehicle with a hybrid transmission arrangement in which a bearing arrangement of the type according to the invention is implemented;

[0059] Fig. 2 a perspective schematic view of the housing cover of the bearing arrangement of the Fig. 1;

[0060] Fig. 3 a schematic perspective view of the bearing sleeve of the bearing arrangement of the Fig. 1;

[0061] Fig. 4 an exemplary construction of a hybrid gearbox arrangement in a schematic axial top view; and

[0062] Fig. 5 an alternative embodiment of a bearing arrangement according to the invention.

[0063] In Fig. 1 is a schematic representation of a powertrain for a motor vehicle and is generally described with 10 The powertrain includes an internal combustion engine. 12, whose crankshaft is connected to the input element of a clutch assembly 14 is connected. Furthermore, the drivetrain features 10 a hybrid transmission arrangement 16 on, which is connected to the coupling arrangement on the input side 14 is connected and has a differential on the output side. 18 is connected, by means of whose drive power is transferred to two driven wheels 20L , 20R is distributable.

[0064] The hybrid transmission arrangement 16 A dual-clutch transmission can have two sub-transmissions. In this case, the clutch arrangement includes... 14 not a single friction clutch, but two independently controllable friction clutches, so that gear changes without interruption of traction are possible.

[0065] The hybrid transmission arrangement 16 includes a gearbox housing 24 . in the gearbox housing 24 is a spur gear transmission26 recorded. The spur gear transmission 26 includes an input wave 28 , which are connected to an output element of the coupling arrangement 14 is connected. In the case of a dual-clutch transmission, the spur gear transmission includes 26 two input waves 28 , which are connected to the output elements of two friction clutches.

[0066] Furthermore, the spur gear transmission 26 at least one exit wave 30 To achieve an axially compact design, the spur gear unit can be used. 26 also a second, parallel output wave 32 exhibit, as in Fig. 1 is only indicated schematically.

[0067] At the output wave 30 (or at the input shaft) 28 ) is a gear 34 rotatably mounted (in the case of mounting on the input shaft, the gear can also be rigidly connected to the input shaft).

[0068] The gear 34 is designed in this case as a loose wheel, rotatable on the output shaft 30 mounted and by means of a switching clutch 36 (for example, a synchronous clutch) with the output shaft 30 connectable or separable from this.

[0069] The gear 34 can be part of a gear set, by means of which a gear stage of the spur gear transmission is realized.

[0070] The spur gear transmission preferably has a plurality of gear stages, in particular five, six, seven or more forward gear stages and at least one reverse gear stage.

[0071] The powertrain 10 Furthermore, it features an electric machine 40 which serves as a drive motor and / or as a generator.

[0072] The electric machine 40 is parallel to the waves 28 , 30 of the spur gear26 arranged and is connected to a drive shaft 42 connected. On the drive shaft 42 is a drive gear 44 fixed. The drive gear 44 can be integrated with the drive shaft in one piece 44 It can be designed, for example, as a pinion milled from the shaft. Furthermore, it is possible to design the drive shaft 42 integrated with the shaft of the electric machine 40 to execute.

[0073] The drive gear 44 is engaged with an intermediate gear 46 The intermediate gear 46 is a first gear, whereas the drive gear 44 a second gear.

[0074] The electric machine 40 is preferably also in the gearbox housing 24 recorded, schematically showing that the electric machine 40 in a section of the gearbox housing 24may have been recorded. 48 Furthermore, a clutch housing is shown schematically, which is attached to the gearbox housing in a manner known per se. 24 It can be flanged on.

[0075] A storage arrangement is in Fig. 1 generally with 50 designated. The storage arrangement 50 has a housing section 52 of the gearbox housing 24 on, which at least the drive shaft 42 surrounds. Furthermore, the storage arrangement includes 50 a case cover 54 , which is perpendicular to an axis of the drive shaft 42 is aligned and with the housing section 52 is connectable.

[0076] On the case lid 54 is a drive shaft bearing 56 determined by means of which the drive shaft 42 is rotatably mounted at one of its axial ends.

[0077] On a bolt 58 is the intermediate gear 46The bolt is rotatably mounted. It is axially connected between the housing cover. 54 and a bearing sleeve 60 fixed. The bearing sleeve 60 In axial plan view, it is generally circular and coaxial to the drive shaft. 42 arranged, with the common longitudinal axis in Fig. 1 with 61 is designated.

[0078] The bearing sleeve 60 has an axial length 62 which is many times greater than the radial thickness of the bearing sleeve 60 and in particular is larger than 20 mm.

[0079] The bearing sleeve 60 is with an outer circumferential section 64 at least partially adjacent to an inner circumferential section 66 of the housing section 52 arranged. The bearing sleeve 60 is in the axial direction between the housing section 52 and the case lid 54 fixed. The housing cover 54For this purpose, an axially inserted housing section can be used 52 have a protruding rim, and the housing section 52 For this purpose, a section adjacent to the inner circumference can be used. 66 exhibit arranged radial shoulders.

[0080] On the bearing sleeve 60 is a first bolt mounting 68 trained. The first bolt holder 68 is eccentric to the longitudinal axis 61 arranged and is in the axial direction between the axial ends of the bearing sleeve 60 arranged.

[0081] On the case lid 54 is a second bolt holder 70 trained. In the assembled state, the bolt 58 at one axial end in the first bolt receptacle 68 and at the other axial end in the second bolt receptacle 70 absorbed and is thus rigid in the axial and radial directions with respect to the housing section 52and the case lid 54 determined.

[0082] The intermediate gear 46 has a hollow shaft section 74 on, which extends from a base body in an axial direction from the intermediate gear 46 extends. The hollow shaft section 74 includes a first storage section 76 with a first inner diameter 77 , as well as a second storage section 78 with a second inner diameter 79 The first inner diameter 77 is larger than the second inner diameter 79 The first camp section 76 is between a base body of the intermediate gear 46 and the second storage section 78 arranged. Between the storage sections 76 , 78 is a shoulder section 80 formed, extending radially or obliquely. The hollow shaft section 74It therefore has a "bell shape".

[0083] The intermediate gear 46 is by means of the hollow shaft section 74 , which is preferably integrally formed with the intermediate gear 46 is designed to be rotatable on the bolt 58 stored. The storage facility includes a main warehouse. 82 , radially within the first bearing section 76 is arranged. The main camp 82 is a rolling bearing with an inner ring 84 and an outer ring 86 trained. The inner ring 84 It is supported in an axial direction against an end face of the first bolt receptacle 68 off. The outer ring 86 It is supported in the axial direction by the shoulder section 80 away.

[0084] Furthermore, the storage facility includes a second storage area. 88 , which is designed, for example, as a needle bearing and is located between the outer circumference of the bolt 58and the inner circumference of the second bearing section 78 is arranged.

[0085] The second camp 88 is preferably adjacent to the housing cover 54 arranged. The first warehouse (main warehouse) 82 is preferably slightly inclined in the axial direction towards the housing cover 54 The bolt is positioned offset from the toothed section. This measure allows at least one section of the bolt receptacle to be positioned differently. 68 in axial direction into the first bearing section 76 extend inwards in order to achieve an axially compact design.

[0086] The intermediate gear 46 Firstly, it engages with the drive gear 44 and secondly, in engagement with the gear wheel 34 This allows the electric machine 40 via the wheelset arrangement thus realized to the spur gear transmission 26to be connected, in particular to a transmission input of a sub-transmission of a dual-clutch transmission.

[0087] The case cover 54 is in Fig. 2. Shown from a perspective view. The housing cover. 54 includes a base plate 92 , which are essentially circular and coaxial to the longitudinal axis 61 is aligned. Furthermore, the housing cover 54 a collar 94 on, which extends axially into the housing section 52 can be inserted. Concentrically to this, the housing cover 54 a bearing shell 96 on, in whose inner circumference the drive shaft bearing 56 can be pressed in. Finally, the housing cover 54 eccentric to the longitudinal axis 61 the second bolt holder 70 open. It goes without saying that the case cover 54 may have holes or similar features to secure the housing cover 54with the housing section 52 to connect in a manner that is known in itself.

[0088] In Fig. 3 is the bearing sleeve 60 shown. The bearing sleeve 60 is also essentially circular in shape, coaxial with the longitudinal axis 61 The bearing sleeve 60 is divided circumferentially into a main circumferential section 100 and a second section 104 subdivided. The main scope section 100 extends over an angular range 102 , which is, for example, greater than 180°, and in particular greater than 270°. The second circumferential section 104 extends over an angular range 106 , which together with the first angular range 102 adds up to 360°.

[0089] In the main scope section 100 The bearing sleeve 60 the axial length 62 on, which in Fig. As indicated in section 1. In the second section 104 An axial recess is provided, extending approximately to half the axial length. The first bolt receptacle is located in this area. 68 trained.

[0090] Fig. Figure 4 shows a schematic representation of a hybrid gearbox arrangement. 16' , for example the hybrid transmission arrangement 16 the Fig. 1 can correspond to. The hybrid transmission arrangement 16' includes a differential 18 , which is in fixed rotary engagement with output gears of two drive shafts 30 , 32 The gearbox arrangement is... 16' further includes an input shaft, wherein gear sets are used to form gear stages between the input shaft 28 and the first output wave 30 as well as between the input wave 28 and the second wave 32can be formed. In the present case, a drive gear 44 the electric machine 40 in rotary engagement with an intermediate gear 46 , which in turn is in rotary engagement with a gear that is on the first output shaft 30 is mounted (as a fixed wheel or as a loose wheel).

[0091] Fig. Figure 5 shows another embodiment of a bearing arrangement 50'' , which, with regard to the structure and function of the storage arrangement in general 50 the Fig. 1 to Fig. 3 can correspond. Therefore, identical elements are identified by the same reference symbols. The differences are explained below.

[0092] The bolt 58'' is designed as a hollow bolt and has an internal thread section at one axial end 112 open. Into the internal thread section 112 is a bolt screw 110screwed in, specifically from outside the housing cover. 54'' , which for this purpose is coaxial to the bolt 58'' demonstrates trained execution.

[0093] This results in a one-sided “floating” bearing of the bolt. 58'' realized.

[0094] The bolt can also be used to reduce weight. 58 the Fig. 1. be designed as a hollow bolt.

Claims

[1] Storage arrangement ( 50 ) for a wheelset arrangement ( 44 , 46 ), with a housing section ( 52 ), a housing cover ( 54 ) and a bolt ( 58 ), on which a first gear ( 46 ) the wheelset arrangement ( 44 , 46 ) is rotatably mounted, characterized by that the bolt ( 58 ) at one axial end on the housing cover ( 54 ) is specified, with the bolt ( 58 ) at its other axial end on a bearing sleeve ( 60 ) is specified, which is connected to the housing section ( 52 ) is connected. [2] Storage arrangement according to claim 1, characterized by that the bearing sleeve ( 60 ) is provided as a separate component, which is positioned axially between the housing section ( 52 ) and the housing cover ( 54 ) is determined. [3] Storage arrangement according to claim 1 or 2, characterized by that the bearing sleeve ( 60) a bolt receptacle ( 68 ) exhibits that are eccentric with respect to a longitudinal axis ( 61 ) the bearing sleeve ( 60 ) is arranged. [4] Bearing arrangement according to one of claims 1–3, characterized by that a circumferential section ( 64 ) of the bearing sleeve on an inner circumferential section ( 66 ) of the housing section ( 52 ) is pending. [5] Bearing arrangement according to one of claims 1–4, characterized by that the bearing sleeve ( 60 ) an axial length ( 62 ) has a diameter greater than 20 mm. [6] Storage arrangement according to one of claims 3–5, characterized by that the bolt holder ( 68 ) in a central area between the axial ends of the bearing sleeve ( 60 ) is arranged. [7] Bearing arrangement according to one of claims 1–6, characterized by that the bearing sleeve ( 60 ) concentric to a wave ( 42 ) is arranged on the housing section ( 52) and / or on the housing cover ( 54 ) is rotatably mounted and on which a second gear ( 44 ) is mounted, which is connected to the first gear ( 46 ) is undergoing intervention. [8] Bearing arrangement according to any one of claims 1–7 or according to the preamble of claim 1, characterized by that the first gear ( 46 ) with a hollow shaft section ( 74 ) is connected, which is located on an axial side of the first gear ( 46 ) extends and the bolt ( 58 surrounds. [9] Storage arrangement according to claim 8, characterized by that the hollow shaft section ( 74 ) by means of a first and a second bearing ( 82 , 88 ) on the bolt ( 58 ) is rotatably mounted, one of which is a main bearing ( 82 ) is preferably designed to absorb radial and axial forces. [10] Storage arrangement according to claim 9, characterized by that the main bearing ( 82) as a rolling bearing with an inner ring ( 84 ) and an outer ring ( 86 ) is trained, with one ( 84 ) of the rings ( 84 , 86 ) axially on the bearing sleeve ( 60 ) supports itself and the other ( 86 ) of the rings ( 84 , 86 ) axially at a shoulder segment ( 80 ) of the hollow shaft section ( 74 ) supports. [11] Bearing arrangement according to one of claims 8–10, characterized by that the hollow shaft section ( 64 ) a first storage section ( 76 ) with a first inner diameter ( 77 ) and a second storage section ( 78 ) with a second inner diameter ( 79 ) has, wherein the first inner diameter ( 77 ) is larger than the second inner diameter ( 79 ). [12] Hybrid transmission arrangement ( 16 ) with a gearbox housing ( 24 ), with an electric machine ( 40) and with a spur gear transmission ( 26 ), which is located in the gearbox housing ( 24 ) is recorded, with the electric machine ( 40 ) with a drive shaft ( 42 ) is connected to which a drive gear ( 44 ) is mounted, with the drive gear ( 44 ) with an intermediate gear ( 46 ) is engaged, with the intermediate gear ( 46 ) with a gear ( 34 ) of the spur gear drive ( 26 ) is engaged and the intermediate gear ( 46 ) by means of a storage arrangement ( 50 ) is stored according to one of claims 1–11. [13] Hybrid transmission arrangement according to claim 12, wherein an axial end of the drive shaft ( 42 ) rotatable on the housing cover ( 54 ) is stored. [14] Method for assembling a gear assembly ( 16 ), in particular a hybrid transmission arrangement according to claim 12 or 13, comprising the steps: – Mounting a bearing sleeve ( 60 ) in a housing section ( 52 ), wherein the bearing sleeve ( 60 ) a first bolt mounting ( 68 ) exhibits; – Providing a bolt ( 58 ), on which a gear ( 46 ) is rotatably mounted; – Providing a case cover ( 54 ), which has a second bolt receptacle ( 70 ) exhibits; and – Mounting the bolt ( 58 ), by removing the housing cover ( 54 ) on the housing section ( 52 ) is determined, – wherein, in the assembled state, an axial end of the bolt ( 58 ) in the first bolt receptacle ( 68 ) and another axial end of the bolt ( 58 ) in the second bolt receptacle ( 70 ) is recorded.

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