Deceleration motor having reduction gear and motor, method for producing variants of deceleration motor of same structural series

Abstract

The invention relates to a gear motor comprising a speed reducer and an electric machine, and to a method for producing gear motor variants of the same structural series, comprising: a housing part of the speed reducer; a bearing flange; a stator housing of the motor; a rotor shaft; and a bearing, which is received in a bearing flange, the inner ring of which is sleeved on the rotor shaft, the bearing flange having distributed holes on the motor side, the bearing flange having distributed holes on the reducer side, the distributed holes on the motor side having discrete or an integer of rotational symmetry axes, the discrete or integer rotational axis of symmetry is parallel to and spaced apart from the discrete or integer rotational axis of symmetry of the holes distributed on the reducer side.

Description

Technical Field

[0001] The invention relates to a reduction motor comprising a reducer and a motor, and a method for manufacturing a modified reduction motor of the same structural series. Background Art

[0002] As is known to all, in a reduction motor, the motor of the reduction motor drives the reducer of the reduction motor.

[0003] A geared motor with an adapter flange is known from DE 10 2021 003 134 A1 as the closest prior art.

[0004] A geared motor is known from DE 10 2014 008 330 A1. Summary of the invention

[0005] The object of the present invention is therefore to improve a geared motor in which high transmission ratios can be achieved in a simple and economical manner.

[0006] According to the invention, this object is achieved by a geared motor according to the features specified in claim 1 .

[0007] In the aspect of the reduction motor having a reducer and a motor according to claim 1, an important feature of the present invention is that the reduction motor has:

[0008] - reducer housing parts,

[0009] - bearing flange,

[0010] - stator housing of the electric motor,

[0011] - the rotor shaft, and

[0012] - bearings,

[0013] The bearing is received in the bearing flange, and the inner ring of the bearing is mounted on the rotor shaft.

[0014] wherein the bearing flange has holes distributed on the motor side / multiple holes distributed in a pattern, in particular holes distributed on the motor side on the side of the bearing flange facing away from the reducer housing part, in particular first fastening elements for connecting the stator housing to the bearing flange, in particular for screws,

[0015] The bearing flange has holes distributed on the reducer side, in particular on the side of the bearing flange facing away from the stator housing, in particular for further fastening elements for connecting a housing part of the reducer to the bearing flange, in particular for further screws,

[0016] Therein, the distributed holes on the motor side (as a whole) have a discrete or integral rotational symmetry axis which is parallel to and spaced apart from the discrete or integral rotational symmetry axis of the distributed holes on the gear unit side, ie not coaxial.

[0017] In particular, a discrete rotational symmetry axis, in particular an axis of rotational symmetry, is understood to be a symmetry axis conceived in a mathematical sense, wherein the distributed holes are transformed into themselves, i.e. remain unchanged, when the distributed holes are rotated through an angle of 360° / n, wherein n is a natural number greater than 1. Alternatively, a rotational symmetry axis having such a symmetry is referred to as an integer rotational symmetry axis, since the rotational symmetry is n-fold.

[0018] The advantage here is that by offsetting the two mutually parallel rotational symmetry axes of the motor including the rotor shaft relative to the rotation axis of the gear of the input stage of the reducer, a larger axis offset between the rotation axis of the rotor shaft and the rotation axis of the gear can be achieved, thereby achieving a higher transmission ratio of the bevel gear transmission stage / commutation transmission stage (Winkelgetriebestufe) of the input of the reducer. It can be said that the motor is located higher, that is, in a direction perpendicular to the rotation axis direction of the gear and perpendicular to the rotation axis direction of the rotor shaft, that is, when the rotational symmetry axes of the two distributed holes are coaxial, the motor is displaced more.

[0019] In the aspect of the reduction motor having a reducer and a motor according to claim 2, an important feature is that the reduction motor has:

[0020] - Reducer housing parts

[0021] - bearing flange,

[0022] - stator housing of the electric motor,

[0023] - the rotor shaft, and

[0024] - bearings,

[0025] The bearing is received in the bearing flange, and the inner ring of the bearing is mounted on the rotor shaft.

[0026] The bearing flange has a first side wall and a second side wall connected to the first side wall via a web.

[0027] In particular, the second side wall is arranged on a side of the web axially facing away from the stator housing, and the first side wall is arranged on a side of the housing part axially facing away from the reducer, wherein the axial direction is parallel to the rotation axis of the rotor shaft,

[0028] wherein the first side wall is centered relative to the stator housing by means of a first centering ring, wherein the first centering ring is integrally formed on the first side wall or on the stator housing,

[0029] wherein the second side wall is centered relative to the housing component of the reducer by means of a second centering ring, wherein the second centering ring is formed on the second side wall or on the housing component of the reducer,

[0030] - wherein the first centering ring has an axis of rotational symmetry which is parallel to and spaced apart from the axis of rotational symmetry of the second centering ring,

[0031] - and / or wherein the first centering ring is designed as a continuous or discontinuous circular ring, whose ring axis is parallel to and spaced apart from the ring axis of the second centering ring, and the second centering ring is also designed as a continuous or discontinuous circular ring,

[0032] In particular, the first centering ring is designed as a hollow cylinder and the second centering ring is designed as another hollow cylinder.

[0033] In this description, a ring is understood to be an annular spatial region similar to a flat hollow cylinder.

[0034] This has the advantage that when connecting the bearing flange to the stator housing or housing part, pressing in and / or centering can be performed quickly and easily.

[0035] Another advantage is that by offsetting the two mutually parallel rotational symmetry axes or ring axes of the motor including the rotor shaft relative to the rotation axis of the input stage gear of the reducer, a larger axis offset between the rotation axis of the rotor shaft and the rotation axis of the gear can be achieved, thereby achieving a higher transmission ratio of the bevel gear transmission stage of the input of the reducer. It can be said that the motor is higher, that is, in a direction perpendicular to the rotation axis direction of the gear and perpendicular to the rotation axis direction of the rotor shaft, that is, when the rotational symmetry axis or ring axis is coaxial, the motor is displaced more.

[0036] Therefore, the present invention can achieve a smaller axis distance between the rotation axis of the gear and the rotation axis of the pinion by replacing the bearing flange with another bearing flange in which two distributed holes are coaxial with each other, and thus achieve a lower transmission ratio. By stocking these two different bearing flanges, different variants of the geared motor can be selectively manufactured. In general, only a few components are required to achieve a high degree of diversity, especially when manufacturing geared motors of the same structural series.

[0037] In an advantageous embodiment, the axis of rotation of the rotor shaft is coaxial with a discrete or integral rotational symmetry axis of the holes distributed on the motor side. This has the advantage that the bearing flange can be easily aligned with the rotor shaft.

[0038] In an advantageous embodiment,

[0039] - the axis of rotation of the rotor shaft is coaxial with the axis of rotational symmetry of the first centering ring,

[0040] - and / or, the rotation axis of the rotor shaft is coaxial with the ring axis of the first centering ring.

[0041] The advantage here is that the bearing flange can be easily aligned with the rotor shaft.

[0042] In an advantageous embodiment, the axis of rotation of the rotor shaft is coaxial with the axis of rotation of the bearing. This has the advantage that the rotor shaft can be rotatably supported by means of the bearing.

[0043] In an advantageous embodiment, a shaft sealing ring is accommodated in the bearing flange, which seals against the rotor shaft.

[0044] Especially wherein, the shaft sealing ring is arranged on the side axially away from the stator housing. Here, the advantage is that the sealing performance can be improved.

[0045] In an advantageous embodiment, a pinion is connected to the rotor shaft in a rotationally fixed manner, the pinion meshing with the face gear.

[0046] In particular, the rotation axis of the gear is perpendicular to the rotation axis of the rotor shaft,

[0047] The pinion has a worm gear, in particular a ZA worm gear. The advantage here is that the pinion is easy to manufacture and has low cost.

[0048] In an advantageous embodiment, the gear has teeth extending in an arcuate manner from the radial inside to the radial outside in the circumferential direction.

[0049] Especially among them, the gear is Spiroplan ® The advantage here is that higher transmission ratios can be achieved.

[0050] In an advantageous embodiment, the gear is connected to another gear in a rotationally fixed manner, the other gear meshing with a third gear connected to the output shaft of the reducer, or connected to a fourth gear connected to the output shaft of the reducer in a rotationally fixed manner. The advantage here is that a higher transmission ratio can be achieved by adding an additional transmission stage.

[0051] In an advantageous embodiment, the housing component is produced as a casting, wherein the channel through the wall of the housing component is produced by a slide, the draft direction of which has a non-zero angle with the axis of rotation of the rotor shaft, in particular an angle of between 10° and 40°. This has the advantage that the housing component has a higher stability and rigidity on the input side. In addition, the rotor shaft with the pinion extends through the channel into the interior of the reducer, so that a gear arranged in the inner region of the reducer meshes with the pinion.

[0052] In an advantageous embodiment, the rotor shaft with the pinion extends into the passage or passes through the passage. Advantageously, the pinion is mainly arranged in the passage, so that the installation space can be effectively utilized.

[0053] In an advantageous embodiment, the axis of rotation of the gear is perpendicular to the axis of rotation of the rotor shaft. It is advantageous here that the input gear stage is a bevel gear stage.

[0054] In an advantageous embodiment, the axis of rotation of the gear wheel has a non-zero axis distance from the axis of rotation of the rotor shaft. This has the advantage that a high transmission ratio can be achieved.

[0055] In an advantageous embodiment, the first centering ring is parallel to the second centering ring, in particular wherein the rotational symmetry axis of the first centering ring is parallel to the rotational symmetry axis of the second centering ring. This has the advantage that the ring axes of the two annularly designed centering rings are parallel to each other but spaced apart from each other. This makes it possible to realize and produce high transmission ratios in a simple and cost-effective manner.

[0056] In an advantageous embodiment, the first side wall and the second side wall of the bearing flange are connected via ribs formed on the web of the bearing flange.

[0057] In particular, the ribs are spaced apart from one another, in particular equidistantly spaced apart from one another in the circumferential direction, in particular with reference to the axis of rotation of the rotor shaft.

[0058] In particular, the outermost radial distance of the individual ribs, in particular measured at the respective axial position, in particular with reference to the axis of rotation of the rotor shaft, decreases monotonically, in particular strictly monotonically, with increasing axial distance from the stator housing,

[0059] In particular, at least two ribs have different extensions in the radial direction and / or the extension of the ribs in the radial direction is a non-constant function of the circumferential angle,

[0060] In particular, at the corresponding circumferential angle, the radial range covered by the corresponding rib in the radial direction is adjacent to the radial range covered by the web. The advantage here is that the rigidity of the bearing flange is enhanced, the heat dissipation performance is improved, and in particular the heat loss of the bearing is improved. The resonance is also suppressed by the different lengths. This is because ribs of different lengths are distributed on the circumference, so that unevenly distributed ribs are designed on the circumference, thereby suppressing the corresponding natural vibration or resonance.

[0061] Furthermore, since each rib has a maximum radial distance from the motor to the reducer, in particular from the first side wall to the second side wall, which decreases with increasing axial distance from the stator housing, stability is improved, in particular wherein the radial distance is based on the rotation axis of the rotor shaft.

[0062] In the method for producing variants of a geared motor of the same structural series, an essential feature is that a first bearing flange or a second bearing flange is selectively selected from a modular system and connected to a housing part of the modular system and to a stator housing of the modular system,

[0063] Wherein, when the first bearing flange is selected, the above-mentioned reduction motor is manufactured as a first variant,

[0064] When the second bearing flange is selected, a geared motor is produced as a second variant, which has a lower transmission ratio than the aforementioned geared motor.

[0065] The advantage here is that a high degree of differentiation within the same series can be achieved with a small number of components.

[0066] In an advantageous embodiment, the second bearing flange has holes distributed on the motor side, in particular on its side facing away from the housing part of the reducer, distributed on the motor side, in particular for first fastening elements, in particular for screws, for connecting the stator housing to the bearing flange.

[0067] wherein the second bearing flange has holes distributed on the reducer side, in particular on its side facing away from the stator housing, in particular for further fastening elements, in particular for further screws, for connecting a housing part of the reducer to the second bearing flange,

[0068] In this case, the distributed holes on the motor side of the second bearing flange have a discrete or integral rotational symmetry axis that is coaxial with the discrete or integral rotational symmetry axis of the distributed holes on the gear unit side.

[0069] This has the advantage that the second bearing flange can be used selectively instead of the first bearing flange, so that lower transmission ratios can be achieved.

[0070] In an advantageous embodiment, the second bearing flange has a first side wall and a second side wall connected to the first side wall via a web.

[0071] In particular, the second side wall is arranged on a side of the web axially facing away from the stator housing, and the first side wall is arranged on a side of the housing part axially facing away from the reducer, wherein the axial direction is parallel to the rotation axis of the rotor shaft,

[0072] wherein the first side wall is centered relative to the stator housing by means of a first centering ring, wherein the first centering ring is integrally formed on the first side wall or on the stator housing,

[0073] wherein the second side wall is centered relative to the housing part of the reducer by means of a second centering ring, wherein the second centering ring is integrally formed on the second side wall or on the housing part of the reducer,

[0074] - wherein the first centering ring has an axis of rotational symmetry which is coaxial with the axis of rotational symmetry of the second centering ring,

[0075] - and / or wherein the first centering ring is designed as a continuous or discontinuous circular ring, whose ring axis is coaxial with the ring axis of the second centering ring, and the second centering ring is also designed as a continuous or discontinuous circular ring,

[0076] In particular, the first centering ring is designed as a hollow cylinder and the second centering ring is designed as another hollow cylinder.

[0077] The advantage here is that a variant with a higher or lower transmission ratio can be realized selectively.

[0078] The advantage here is that the second bearing flange can be used instead of the first bearing flange, so that lower transmission ratios can be achieved.

[0079] Further advantages emerge from the dependent claims. The invention is not limited to the combination of features of the claims. Other reasonable combinations of the claims and / or the features of the individual claims and / or the features of the description and / or the features of the drawings will be apparent to a person skilled in the art, in particular from the proposed objectives and / or from the objectives proposed by comparison with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] The present invention will now be described in more detail according to the schematic diagram:

[0081] FIG. 1 shows a longitudinal section of a geared motor according to the invention.

[0082] FIG. 2 shows an oblique view of a bearing flange 2 of an electric machine from one viewing direction.

[0083] FIG. 3 shows an oblique view of the bearing flange 2 from another viewing direction.

[0084] FIG. 4 shows a side view of the bearing flange 2 .

[0085] FIG. 5 shows a cross section through the bearing flange 2 . DETAILED DESCRIPTION

[0086] As shown in the figure, the variable frequency motor has a rotor shaft which is rotatably supported via a first bearing 8 and another bearing.

[0087] A first bearing 8 is received in the bearing flange 2 .

[0088] The bearing flange 2 has a first side wall 40 and a second side wall 41 , which are connected by a web 42 .

[0089] The first bearing 8 is received in the bearing flange 2 , in particular radially inside the web 42 , wherein the axis of rotation of the first bearing 8 is coaxial with the axis of rotation of the rotor shaft 9 .

[0090] The first side wall 40 is connected to the stator housing 1 on its side facing the rotor shaft 9, wherein the first centering ring 7 is formed on the first side wall 40 or alternatively formed on the stator housing 1. The first centering ring 7 is formed in a cylindrical shape, that is, it has a cylindrical segment, in particular a hollow cylindrical segment. The first centering ring 7 is coaxial with the rotor shaft 9. In particular, the cylinder axis and / or the rotational symmetry axis of the centering ring 7 is coaxial with the rotation axis of the rotor shaft 9, in particular, the cylinder axis and / or the rotational symmetry axis of the centering ring 7 coincides and / or is identical or consistent with the rotation axis of the rotor shaft 9.

[0091] The second side wall 41 is connected to the housing component 3 of the reducer on its side facing away from the rotor shaft 9, wherein a second centering ring 10 is formed on the second side wall 41 or alternatively on the housing component 3. The second centering ring 10 is also shaped as a cylinder, that is, it has a cylinder segment, especially a hollow cylinder segment. However, the cylinder axis of the second centering ring 10, that is, the rotational symmetry axis of the second centering ring is parallel to the rotation axis of the rotor shaft 9 and is spaced apart from the rotation axis of the rotor shaft 9.

[0092] The bearing flange 2 is connected to the stator housing 1 by bolts screwed into the first holes, or tie rods passing through the first holes are used to hold these housing parts of the motor together.

[0093] In any case, the rotational symmetry axis of the patterned first holes is coaxial and concentric with the axis of rotation of the rotor shaft 9 .

[0094] The distributed holes 6 for second screws for connecting the bearing flange 2 to the housing part 3 of the gear unit have an axis of rotational symmetry which is spaced apart from the axis of rotation of the rotor shaft 9 and parallel thereto.

[0095] The rotor shaft 9 therefore projects offset from the center and / or eccentrically from the bearing flange 2 into the reducer.

[0096] Here, the rotor shaft 9 passes through a through stepped hole, in particular a bearing receiving hole, of the bearing flange 2, wherein the outer ring of the bearing, in particular the first bearing, is axially received in front of the stepped portion, and the shaft sealing ring is axially received behind the stepped portion, which forms a seal against the rotor shaft 9.

[0097] The pinion 5 has worm teeth, especially ZA worm teeth, and meshes with the teeth of the face gear 4. The teeth of the face gear 4 extend arcuately from the radial inside to the radial outside, that is, as the radial distance from the rotation axis of the gear 4 increases, the circumferential angular position of the teeth of the face gear gradually increases.

[0098] There is a certain distance, in particular a non-zero distance, between the rotation axis of the gear 4 and the rotation axis of the rotor shaft 9 and / or the rotation axis of the pinion 5 .

[0099] The rotation axis of the gear 4 is perpendicular to the rotation axis of the rotor shaft 9 and / or the rotation axis of the pinion 5 .

[0100] The reduction gear preferably has further transmission stages. In particular, a further gear is connected to the gear 4 in a rotationally fixed manner and meshes with the third gear, and the third gear meshes with the fourth gear.

[0101] The bore inner wall of the stepped bore is oriented concentrically with the rotation axis of the rotor shaft.

[0102] The rotor shaft 9, along with the pinion 5 connected thereto in a non-rotatable manner, extends through an opening of the housing component 3 of the reducer into the at least partially oil-filled interior space of the reducer. The opening, in particular a through-opening designed as a channel, in particular a draft channel, is produced by pulling the slide during the casting production of the housing component 3. Here, the draft direction forms a non-zero angle with the rotation axis of the rotor shaft 9, in particular an angle between 10° and 40°. Within this preferred angle range, the pinion 5 is sufficiently separated from the material of the housing component 3, in particular from the channel wall, even when partially extending into the interior space of the reducer.

[0103] As shown in Figures 2 to 4, a rib 20 is formed on the bearing flange on the radial outer side of the web 42, and the rib connects the first side wall 40 to the second side wall 41. The ribs 20 protrude radially on the web 42 and are spaced apart from each other in the circumferential direction. The ribs 20 are formed on the web 42 and bulge in the radial direction.

[0104] However, the length of the ribs 20 in the radial direction is different. Therefore, the maximum extension of the ribs 20 (especially the radial extension) is a non-constant function of the circumferential angle, especially a variable function. This is particularly evident in FIG. 5 .

[0105] As can be clearly seen in FIGS. 3 and 4 , the ribs 20 extend obliquely in the axial direction, since the holes of the bearing flange 2 extending on the motor side are not concentric and / or coaxial with the holes extending on the gear unit side.

[0106] Therefore, the outermost radial distance of each rib 20 decreases monotonically, in particular strictly monotonically, with increasing axial distance from the stator housing 1 .

[0107] In another embodiment of the present invention, in order to form another variant of the reduction motor, the bearing flange is replaced by another bearing flange, in which the centering rings 7 and 10 and the distributed holes are arranged rotationally symmetrically relative to the rotation axis of the rotor shaft, in particular discretely rotationally symmetrically, and in particular also concentrically and / or coaxially oriented.

[0108] Although there is still an axial offset, ie a distance, between the rotational axis of the rotor shaft 9 and the rotational axis of the gear 4 , the axial offset is now much smaller, so the maximum achievable transmission ratio of the reducer is also much smaller.

[0109] In this way, different variants of the same structural series can be manufactured using a small number of components. A high degree of diversity can be achieved using a small number of components. For this purpose, two different bearing flanges 2 must be stocked in the warehouse, the first bearing flange having holes that are not concentric with the holes that are distributed on the motor side, and the second bearing flange having holes that are concentric with the holes that are distributed on the motor side.

[0110] List of reference numerals:

[0111] 1 stator housing

[0112] 2 Bearing flange

[0113] 3 Reducer housing parts

[0114] 4 Gears

[0115] 5 small gears

[0116] 6 holes for bolt distribution

[0117] 7First centering ring

[0118] 8 Bearings

[0119] 9 Rotor shaft

[0120] 10 Second centering ring

[0121] 20 ribs

[0122] 40 side wall

[0123] 41 Sidewall

[0124] 42 belly plate

Claims

1. A reduction motor, comprising a reducer and a motor, The geared motor has: - reducer housing parts, - bearing flange, - stator housing of the electric motor, - the rotor shaft, and - bearings, The bearing is received in the bearing flange, and the inner ring of the bearing is mounted on the rotor shaft. The bearing flange has distributed holes on the motor side, in particular on the side of the bearing flange facing away from the housing part of the reducer, the distributed holes on the motor side are in particular used for first fastening elements, in particular for screws, for connecting the stator housing to the bearing flange. The bearing flange has distributed holes on the reducer side, in particular on the side of the bearing flange facing away from the stator housing, which distributed holes on the reducer side are in particular used for further fastening elements, in particular for further screws, for connecting a housing part of the reducer to the bearing flange. It is characterized in that The distributed holes on the motor side have a rotational symmetry axis, in particular a discrete or integer rotational symmetry axis, which is parallel to and spaced apart from the rotational symmetry axis, in particular a discrete or integer rotational symmetry axis, of the distributed holes on the reducer side, i.e., in particular not coaxial.

2. A reduction motor, comprising a reducer and a motor, The geared motor has: - reducer housing parts, - bearing flange, - stator housing of the electric motor, - the rotor shaft, and - bearings, The bearing is received in the bearing flange, and the inner ring of the bearing is mounted on the rotor shaft. The bearing flange has a first side wall and a second side wall connected to the first side wall via a web. In particular, the second side wall is arranged on a side of the web axially away from the stator housing, and the first side wall is arranged on a side of the housing component of the reducer axially away, and the axial direction is parallel to the rotation axis of the rotor shaft. The first side wall is centered relative to the stator housing by a first centering ring, which is integrally formed on the first side wall or on the stator housing, The second side wall is centered relative to the housing component of the reducer by a second centering ring, and the second centering ring is formed on the second side wall or on the housing component of the reducer. - the first centering ring has an axis of rotational symmetry which is parallel to and spaced apart from the axis of rotational symmetry of the second centering ring, - and / or, the first centering ring is designed as a continuous or discontinuous circular ring, the ring axis of which is parallel to and spaced apart from the ring axis of the second centering ring, and the second centering ring is also designed as a continuous or discontinuous circular ring, In particular, the first centering ring is designed as a hollow cylinder and the second centering ring is designed as another hollow cylinder.

3. The reduction motor according to claim 1, It is characterized in that The rotation axis of the rotor shaft is coaxial with a discrete or integral rotational symmetry axis of the holes distributed on the motor side.

4. The reduction motor according to claim 2, It is characterized in that - the axis of rotation of the rotor shaft is coaxial with the axis of rotational symmetry of the first centering ring, - and / or, the rotation axis of the rotor shaft is coaxial with the ring axis of the first centering ring.

5. A geared motor according to any one of the preceding claims, It is characterized in that The rotation axis of the rotor shaft is coaxial with the rotation axis of the bearing, and / or, A shaft sealing ring is received in the bearing flange and forms a seal against the rotor shaft. In particular, the shaft sealing ring is arranged on a side axially facing away from the stator housing. In particular, the shaft sealing ring is arranged coaxially with the bearing.

6. A geared motor according to any one of the preceding claims, It is characterized in that The pinion gear is connected to the rotor shaft in a non-rotatable manner and meshes with the plane gear. In particular, the rotation axis of the gear is perpendicular to the rotation axis of the rotor shaft, The pinion has a worm gear, in particular a ZA worm gear.

7. A geared motor according to any one of the preceding claims, It is characterized in that The gear has teeth extending in an arc shape from the radial inner side to the radial outer side in the circumferential direction. In particular, the gear is Spiroplan ® gear.

8. A geared motor according to any one of the preceding claims, It is characterized in that The gear is non-rotatably connected to another gear that meshes with a third gear connected to an output shaft of the speed reducer or is non-rotatably connected to a fourth gear connected to an output shaft of the speed reducer.

9. A geared motor according to any one of the preceding claims, It is characterized in that The housing component is produced as a casting, the passage through the wall of the housing component being produced by means of slides, the draft direction of which forms a non-zero angle, in particular an angle of between 10° and 40°, with the rotation axis of the rotor shaft.

10. A geared motor according to any one of the preceding claims, It is characterized in that The rotor shaft with the pinion gear projects into or through the passage.

11. A geared motor according to any one of the preceding claims, It is characterized in that The rotation axis of the gear is perpendicular to the rotation axis of the rotor shaft. and / or, The rotation axis of the gear wheel forms a non-zero axis spacing with the rotation axis of the rotor shaft.

12. A geared motor according to any one of the preceding claims, It is characterized in that The first centering ring is parallel to the second centering ring, in particular, the rotational symmetry axis of the first centering ring is parallel to the rotational symmetry axis of the second centering ring, and / or, The first side wall and the second side wall of the bearing flange are connected by ribs formed on the web of the bearing flange. In particular, the ribs are spaced apart from one another, in particular spaced equidistantly, in the circumferential direction, in particular with reference to the axis of rotation of the rotor shaft. In particular, the outermost radial distance of the individual ribs, in particular measured at the respective axial position, in particular with reference to the axis of rotation of the rotor shaft, decreases monotonically, in particular strictly monotonically, with increasing axial distance from the stator housing, In particular, at least two ribs have extensions of different magnitude in the radial direction and / or the extension of the rib in the radial direction is a non-constant function of the circumferential angle, In particular, at the respective circumferential angle, the radial extent covered by the respective rib in radial direction adjoins the radial extent covered by the web.

13. A method for manufacturing variants of a geared motor of the same structural series, selectively selecting a first bearing flange or a second bearing flange from the modular system and connecting the first bearing flange or the second bearing flange to a housing component of the modular system and a stator housing of the modular system, When selecting the first bearing flange, a geared motor according to any of the preceding claims is produced as a first variant. When the second bearing flange is selected, a geared motor is produced as a second variant which has a lower transmission ratio than the geared motor according to one of the preceding claims.

14. The method according to any one of the preceding claims, It is characterized in that The second bearing flange has distributed holes on the motor side, in particular on the side of the second bearing flange facing away from the housing part of the reducer, the distributed holes on the motor side are in particular for first fastening elements, in particular for screws, for connecting the stator housing to the bearing flange. The second bearing flange has distributed holes on the reducer side, in particular on the side of the bearing flange facing away from the stator housing, the distributed holes on the reducer side are in particular used for further fastening elements, in particular for further screws, for connecting a housing part of the reducer to the second bearing flange. The distributed holes on the motor side of the second bearing flange have a discrete or integral rotational symmetry axis that is coaxial with the discrete or integral rotational symmetry axis of the distributed holes on the gear unit side.

15. The method according to claim 13, It is characterized in that The second bearing flange has a first side wall and a second side wall connected to the first side wall via a web, In particular, the second side wall is arranged on a side of the web axially away from the stator housing, and the first side wall is arranged on a side of the housing component of the reducer axially away, and the axial direction is parallel to the rotation axis of the rotor shaft. The first side wall is centered relative to the stator housing by a first centering ring, which is integrally formed on the first side wall or on the stator housing. The second side wall is centered relative to the housing component of the reducer by a second centering ring, and the second centering ring is formed on the second side wall or on the housing component of the reducer. - the first centering ring has an axis of rotational symmetry which is coaxial with the axis of rotational symmetry of the second centering ring, - and / or, the first centering ring is designed as a continuous or discontinuous circular ring, the ring axis of which is coaxial with the ring axis of the second centering ring, and the second centering ring is also designed as a continuous or discontinuous circular ring, In particular, the first centering ring is designed as a hollow cylinder and the second centering ring is designed as another hollow cylinder.

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