Bearing unit and execution drive

Abstract

The invention relates to a bearing unit (2) for a motor (3) and at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14, 15) of an actuator (1), having at least one fastening element (16) by means of which the motor (3) can be fastened and / or mounted in a housing (40) of the actuator (1), and having at least one ring gear (15), at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14, 15) of the actuator (1) can be accommodated or supported by means of the ring gear (15), the at least one ring gear (15) comprising at least one fastening section (17), by means of which the ring gear (15) can be fastened and / or supported in a rotationally fixed manner in the housing (40). According to the invention, the bearing unit (2) comprises at least one bearing shaft (18, 19, 20), the at least one ring gear (15) and the at least one fixing element (16) being connected, in particular directly, by means of the at least one bearing shaft (18, 19, 20) when the bearing unit (2) is used as intended. The invention also relates to an execution drive (1).

Description

Technical Field

[0001] The invention relates to a bearing unit for a motor and / or at least one transmission element of an actuator, the bearing unit having at least one fixing element, by means of which the motor can be fixed and / or supported in a housing of the actuator, and having at least one toothed ring, by means of which at least one transmission element of the actuator can be accommodated and / or supported, wherein the at least one toothed ring comprises at least one fixing section, by means of which the toothed ring can be fixed and / or supported in a rotationally fixed manner in the housing. The invention also relates to an actuator, in particular an actuator for a vehicle component, for example for an electronic parking brake. Background Art

[0002] A component, in particular for a parking brake actuator, is known from DE 10 2019 131 607 A1. The parking brake actuator comprises a housing in which an electric motor and a transmission that can be driven by the electric motor are arranged. The ring gear has at least one support device for being supported in the housing. The electric motor is accommodated in a fixed plate at a first axial end. An additional support plate accommodates a replaceable mating gear of the transmission, and the fixed plate of the electric motor is supported on the support plate. Due to this arrangement, unexpected movements of the transmission components may occur, which increases wear. This increases the likelihood of failure of the actuator drive or the parking brake actuator. In addition, the increase in wear can increase the tooth interference of the transmission components, which can lead to increased noise or operating noise. Summary of the invention

[0003] The object of the present invention is to eliminate the disadvantages known from the prior art.

[0004] This object is achieved by a bearing unit and an actuator having the features of the independent claims.

[0005] A bearing unit for at least one transmission element of a motor and / or an actuator drive is proposed. Preferably, the motor is an electric motor. Preferably, the at least one transmission element is a transmission wheel of a planetary gear transmission and / or a transmission gear transmission of the actuator drive. The transmission element can be, for example, at least one drive pinion, at least one transmission wheel, at least one transmission pinion, at least one intermediate pinion, at least one driven wheel, at least one sun gear, at least one planet carrier and / or at least one planet wheel.

[0006] The bearing unit comprises at least one fixing element, by means of which the motor can be fixed and / or supported in the housing of the actuator drive. In addition, the bearing unit comprises at least one ring gear. Preferably, at least one transmission element of the actuator drive, in particular a planetary gear transmission and / or a transmission gear transmission of the actuator drive, can be accommodated and / or supported by means of the ring gear. Thus, the bearing unit comprises at least one fixing element and at least one ring gear. The fixing element can be, for example, a fixing plate. It is also conceivable that the bearing unit has two ring gears forming a ring gear unit.

[0007] When the actuator drive is used as intended, at least one gear ring supports and / or accommodates at least one transmission element. At least one driven gear, at least one sun gear, at least one planet carrier and / or at least one planet wheel can be accommodated and / or arranged in the gear ring. Preferably, at least one gear ring, at least one driven gear, at least one sun gear, at least one planet carrier and / or at least one planet wheel form a planetary gear transmission.

[0008] Preferably, at least one drive pinion, at least one transmission wheel, at least one transmission pinion and / or at least one intermediate pinion are supported on at least one cavity and / or on at least one fixed element. Preferably, at least one drive pinion, at least one transmission wheel, at least one transmission pinion and / or at least one intermediate pinion form a transmission gear transmission. Preferably, at least one drive pinion, at least one transmission wheel, at least one transmission pinion and / or at least one intermediate pinion are supported by means of a fixed element and / or a ring gear.

[0009] The at least one toothed ring comprises at least one fixing section, by means of which the toothed ring can be fixed and / or supported in a non-rotatable manner in the housing. Preferably, the fixing section is cam-shaped and / or toothed. The cam-shaped fixing section comprises a plurality of cams, which extend radially outwards away from the toothed ring on the outer side of the toothed ring. For example, the cams can have a basic cuboid shape. When the bearing unit is used as intended, the at least one toothed ring is fixed or supported and / or accommodated in a non-rotatable manner in the actuator drive by means of at least one supporting section of the housing designed to correspond to the fixing section. Therefore, the supporting section can include a plurality of receiving recesses designed to correspond to the cams. Preferably, the at least one toothed ring can be separated from the housing in the axial direction of the actuator drive or the motor.

[0010] According to the invention, the bearing unit comprises at least one bearing shaft, wherein, when the bearing unit is used as intended, at least one toothed ring and at least one fixed element are connected, in particular directly, via the at least one bearing shaft. Thus, the at least one bearing shaft provides a connection between the at least one toothed ring and the at least one fixed element. As a result, tolerances between individual transmission elements of the actuator, in particular of a gear transmission and / or a planetary transmission, can be kept as low as possible. Preferably, at least one toothed ring and at least one fixing element are detachably connected to one another via at least one bearing shaft. For example, at least one toothed ring and / or at least one fixing element can be replaced. This is particularly advantageous for making it easier to adapt the actuator drive to different performance and size classes. Furthermore, in the event of wear, at least one toothed ring and / or at least one fixing element and / or at least one transmission element can be replaced very easily.

[0011] Additionally or alternatively, at least one bearing shaft can support and / or accommodate at least one transmission element, in particular a drive pinion and / or an intermediate pinion. Preferably, at least one ring gear, at least one fastening element and at least one transmission element are supported on at least one bearing shaft, in particular directly on at least one bearing shaft. This allows tolerances and / or tolerance chains to be kept as low as possible.

[0012] Preferably, the bearing unit is designed in multiple parts, in particular in at least two parts. Due to the two-part design of the bearing unit, the at least one fixing element and the at least one toothed ring can be made of different materials. Thus, the optimum material can be used depending on the requirements of the individual components. Preferably, the fixing element is made of a first material, in particular plastic, and the at least one toothed ring is made of a second material, in particular metal. Additionally or alternatively, the at least one toothed ring is made of sintered metal, in particular aluminum. Additionally or alternatively, the at least one toothed ring is stamped from sheet metal as a stamped part, in particular as a fine stamped part, a fine cut part and / or a precision stamped part. Advantageously, at least one toothed ring comprises at least one bearing shaft and / or at least one receiving cavity for at least one bearing shaft; and / or at least one fixing element comprises at least one bearing shaft and / or at least one bearing opening for at least one bearing shaft. Thus, during the intended use of the bearing unit, by means of the at least one bearing shaft, the at least one receiving cavity and / or the at least one bearing opening, the at least one toothed ring and the at least one fixing element can be connected to one another, in particular directly connected.

[0013] Furthermore, it is advantageous if, when the bearing unit is used as intended, at least one bearing shaft is preferably accommodated, in particular immovably and / or detachably, in at least one receiving cavity of at least one ring gear and / or is supported in at least one bearing opening of a fastening element. It is also advantageous if at least one bearing axis is designed as a separate bearing pin and / or extends in the axial direction of the actuator drive.

[0014] Furthermore, it is advantageous if the at least one bearing supports and / or accommodates at least one transmission element and / or at least one transmission component of the actuator drive, in particular a gear transmission of the actuator drive.

[0015] It is also advantageous if at least one toothed ring comprises at least two, preferably at least three bearing shafts and / or at least two, preferably at least three receiving spaces.

[0016] Advantageously, at least one fastening element comprises at least two, preferably at least three bearing openings.

[0017] It is also advantageous that the first bearing shaft supports and / or accommodates at least one transmission wheel and / or at least one transmission pinion, the second bearing shaft supports and / or accommodates at least one first intermediate pinion, and / or the third bearing shaft supports and / or accommodates at least one second intermediate pinion, wherein preferably, the first bearing shaft, the second bearing shaft and / or the third bearing shaft are, in particular, non-displaceably connected to at least one gear ring and / or fastened to at least one gear ring. Preferably, at least one transmission wheel and at least one transmission pinion are designed as dual transmission wheels and / or are connected to each other in particular in a non-displaceable manner.Preferably, the dual gearwheel is supported and / or accommodated on the first bearing shaft. Preferably, the drive pinion is supported on the motor and rotates about the drive shaft. The motor is in turn fixed by means of a bearing unit. Preferably, at least one toothed ring accommodates a transmission element of the planetary gear transmission. Therefore, the driven shaft of the planetary gear transmission is also fixed by means of the bearing unit. Since at least one bearing shaft, preferably the first bearing shaft, the second bearing shaft and / or the third bearing shaft, is also determined or fixed by means of at least one toothed ring and thus by means of a bearing unit, the spacing between the corresponding transmission elements of the planetary gear transmission and the gear transmission remains constant with respect to each other. It is also advantageous if at least one ring gear has a first accommodating cavity for the first bearing shaft, a second accommodating cavity for the second bearing shaft and / or a third accommodating cavity for the third bearing shaft and / or if the fixing element has a first bearing opening for the first bearing shaft, a second bearing opening for the second bearing shaft and / or a third bearing opening for the third bearing shaft.

[0018] It is also advantageous if, when the actuator drive is used as intended, the drive pinion meshes with the first intermediate pinion and / or the second intermediate pinion.

[0019] It is also advantageous if the first bearing shaft is arranged between the second bearing shaft and the third bearing shaft, the first receiving space is arranged between the second receiving space and the third receiving space, and / or the first bearing opening is arranged between the second bearing opening and the third bearing opening.

[0020] Furthermore, it is advantageous if the first bearing opening forms an interference fit and / or a transition fit with the first bearing shaft. Additionally or alternatively, the first bearing opening rests circumferentially on the first bearing shaft. Thus, when the bearing unit is used as intended, a first axial distance between a drive shaft of the motor and a transmission shaft passing through the first bearing shaft and / or a second axial distance between the transmission shaft and a driven shaft of the planetary gear transmission are designed to be constant and / or unchangeable. It is also advantageous if at least one compensating play is formed between at least one of the bearing openings and at least one of the bearing shafts so that when the actuator drive is used in the intended manner, the at least one securing element can be moved, in particular to a limited extent, to the at least one toothed ring. Preferably, the compensating play comprises a spacing between at least one of the bearing openings and at least one of the bearing axes. By means of this spacing, limited mobility of the at least one fixing element relative to the at least one bearing axis can be ensured very easily. Additionally or alternatively, it is conceivable that at least one compensating element is at least partially arranged within the compensating play or in the region of the spacing, the compensating element being designed to be at least partially deformable. For example, the compensating element is made of a moldable third material, in particular a foam, a plastic, an adhesive, an elastomer and / or a rubber.

[0021] It is also advantageous that a first compensating play is formed between the second bearing opening and the second bearing shaft, and / or a second compensating play is formed between the third bearing opening and the third bearing shaft, so that when the actuator is used as intended, at least one fixing element can be pivoted to a limited extent to at least one toothed ring, in particular around the first bearing shaft and / or around the transmission shaft. Since the first bearing shaft preferably rests on the first bearing opening, only a rotational movement or a pivoting movement can be achieved around the first bearing shaft. This can ensure that the intermediate pinion arranged on the second bearing shaft and / or the third bearing shaft can only be pivoted to a limited extent. For example, forces and / or moments introduced by the motor and / or the driven shaft into one of the transmission elements and / or the bearing unit can only be compensated by a limited pivoting movement. Thus, the limited pivoting compensates for the forces and / or moments. When pivoting, the two intermediate pinions can also be pressed against at least one driven wheel to varying degrees. Due to the power distribution between the two intermediate pinions, the meshing between at least one of the two intermediate pinions and the driven wheel is always guaranteed.

[0022] It is also advantageous if at least one receiving chamber of at least one toothed ring has at least one receiving hole and / or if at least one receiving chamber is designed with two receiving holes spaced apart from one another in the axial direction of the actuator drive as receiving openings.

[0023] It is also advantageous if at least one bearing shaft comprises a receiving section and / or a bearing section, wherein the receiving section is preferably at least partially received and / or arranged in a receiving cavity of at least one toothed ring and / or in a bearing opening of a fixing element when the bearing unit is used as intended, and / or at least one transmission element and / or a transmission component of an actuator, in particular a transmission gear transmission of the actuator, is supported and / or received on the bearing section. Preferably, at least one bearing shaft, in particular the first bearing shaft, the second bearing shaft and / or the third bearing shaft, for example, is supported and / or fastened exclusively on one side of at least one toothed ring. This means that the tolerances of other surrounding components can be neglected. By supporting or fastening at least one bearing shaft to only one component or structural unit, namely at least one toothed ring and / or toothed ring unit, compliance with the axial spacing between the transmission elements can be ensured.

[0024] Furthermore, it is advantageous if the receiving section extends over at least one third, preferably at least half, of the total length of the bearing shaft extending in the axial direction.

[0025] It is also advantageous if the receiving section together with the bearing section extends over at least half, preferably at least two thirds, of the total length of the bearing shaft, which extends in the axial direction.

[0026] Furthermore, it is advantageous if at least one bearing shaft comprises a first end adjoining the bearing section and / or a second end adjoining the receiving section.

[0027] It is also advantageous if the second end of the at least one bearing shaft is arranged in the receiving chamber and / or if the at least one toothed ring at least partially protrudes beyond the at least one bearing shaft in the direction opposite to the axial direction. The axial direction here extends from the housing lower part of the actuator drive to the housing cover or from the at least one toothed ring to the at least one driven wheel of the planetary gear transmission. The at least one bearing shaft also protrudes in the axial direction from the at least one toothed ring. It is also advantageous if the first end of the at least one bearing shaft is arranged within the at least one transmission element and / or projects at least partially beyond the transmission element in the axial direction of the at least one bearing shaft.

[0028] Furthermore, an actuator drive is proposed, in particular for a vehicle component, for example for an electronic parking brake. The actuator drive comprises at least one housing, a motor arranged in the housing, at least one planetary gear transmission and / or a transmission gear transmission arranged in the housing and connected to the motor, and at least one bearing unit for the motor and at least one transmission element of the planetary gear transmission and / or the transmission gear transmission.

[0029] According to the invention, at least one bearing unit is designed according to the preceding description, whereby the mentioned features may be present individually or in any combination.

[0030] Advantageously, when the bearing unit and / or the actuator drive are used as intended, the first end and / or the second end of the at least one bearing shaft is spaced apart from a housing of the actuator drive, in particular from a housing lower part and / or a housing cover of the actuator drive. Preferably, at least one bearing shaft is supported and / or accommodated exclusively in the bearing unit. Preferably, at least one bearing shaft, in particular the first bearing shaft, the second bearing shaft and / or the third bearing shaft, is supported and / or accommodated only on one side of the bearing unit. For accommodation in the bearing unit, at least one bearing shaft may include an accommodation section.

[0031] It is also advantageous that at least one transmission element and / or at least one gear ring is designed as a stamped part, in particular as a fine stamped part, a fine cut part and / or a precision stamped part. Fine stamping or fine cutting is a non-cutting separation method that can produce high-precision workpieces (in this case, transmission elements). In addition or alternatively, the transmission element can be formed at the same time. Unlike "conventional" stamping, during the stamping and / or forming by fine stamping, fine cutting and / or fine stamping, at least one transmission element remains fixed on the cutting contour, in particular on at least one outer contour and / or inner contour, preferably with annular saw teeth. After being kept fixed, at least one transmission element is cut out of the metal by a punch. As a result, at least one transmission element can be produced or stamped out with at least one very precise cutting edge, in particular on the outer contour and / or inner contour. In addition or alternatively, at least one precision stamped, fine cut and / or fine stamped transmission element has a high cylindrical cutting portion along the thickness of the plate. These precise cuts or cutting edges are particularly advantageous in the transmission element according to the invention, preferably in the area of ​​at least one toothing.

[0032] Preferably, at least one of the ring gear, the drive pinion, the transmission wheel, the transmission pinion, the intermediate pinion, the driven wheel, the sun gear, the planet carrier and / or the planet gear is designed as a stamped part, in particular a fine stamped part, a fine cut part and / or a precision stamped part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Further advantages of the present invention are described in the following exemplary embodiments. In the accompanying drawings: Figure 1 shows a schematic cross-sectional view of an actuator according to an exemplary embodiment; Figure 2 A schematic perspective view of a bearing unit according to an exemplary embodiment is shown. DETAILED DESCRIPTION

[0034] In the following description of the figures, the same reference numerals are used for identical and / or at least comparable features in the individual figures. Individual functions, their design and / or mode of operation are generally only explained in detail when first mentioned. If the individual features are not explained in detail again, their design and / or mode of operation corresponds to that of the already described features with the same effect or the same name.

[0035] Figure 1 A schematic sectional view of an actuator drive 1 according to an exemplary embodiment is shown. In the exemplary embodiment shown, the actuator drive 1 comprises a planetary gear transmission 4, which is designed, for example, as a multi-stage, in particular two-stage planetary gear transmission 4. The planetary gear transmission 4 is driven or rotated by means of a motor 3. The rotational movement of the motor 3 is transmitted and / or driven to the planetary gear transmission 4 by means of at least one transmission wheel or spur gear designed as a transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. For this purpose, the actuator drive 1 in the exemplary embodiment shown has a transmission gear transmission 5 formed by a plurality of transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15.

[0036] The actuator drive 1 has a plurality of transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, wherein at least one of the transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, in particular a plurality of the transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, comprises a toothing. By means of the toothing, the plurality of transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 mesh with one another. In the exemplary embodiment shown, a number of transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 are shown. Thus, at least one drive pinion 6, at least one transmission wheel 7, at least one transmission pinion 8, at least one intermediate pinion 9, 10, at least one driven wheel 11, at least one sun wheel 12, at least one planet carrier 13, at least one planet wheel 14 and / or at least one ring gear 15 are shown as at least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. Preferably, the above-mentioned transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 are engaged with each other, in particular in the order mentioned. Preferably, at least one transmission wheel 7, at least one transmission pinion 8 and / or at least one intermediate pinion 9, 10 form a transmission gear transmission 5. As a result, the torque or rotational movement introduced by the motor 3 can be transmitted and / or transmitted from the drive shaft 27 to the driven shaft 29. Preferably, the transmission gear transmission 5 has a first intermediate pinion 9 and a second intermediate pinion 10. As a result, the load transmitted from the at least one transmission pinion 8 via the two intermediate pinions 9, 10 to the at least one driven wheel 11 can be branched and / or divided. In this way, the probability of failure of at least one intermediate pinion 9, 10 can be reduced. In the exemplary embodiment shown, only one of the intermediate pinions 9, 10 is shown. Preferably, the first intermediate pinion 9 and the second intermediate pinion 10 are arranged one after the other, so that in the exemplary embodiment shown, only one of the two intermediate pinions 9, 10 is shown.

[0037] In addition, Figure 1 In the exemplary embodiment of the present invention, a planetary gear transmission 4 is shown. The planetary gear transmission 4 includes at least one ring gear 15, at least one planet carrier 13, at least one planet wheel 14, at least one sun wheel 12 and / or at least one driven wheel 11. Since the planetary gear transmission 4 is designed as a multi-stage, in particular a two-stage planetary gear transmission 4, it includes at least two planet carriers 13, at least two planet wheels 14 and at least two sun wheels 12. In addition, the planetary gear transmission 4 in the exemplary embodiment shown includes two ring gears 15. Preferably, at least one of the transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, in particular at least one drive pinion 6, at least one transmission wheel 7, at least one transmission pinion 8, at least one driven wheel 11, at least one sun gear 12, at least one planet carrier 13, at least one planet wheel 14 and / or at least one ring gear 15 is designed as a stamped part, in particular a fine stamped part, a fine cut part and / or a precision stamped part. The transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 designed as stamped parts are stamped from sheet metal. Stamping is usually done by fine stamping, fine cutting and / or precision stamping. For example, a three-action press is used for this purpose. In this way, a transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 that is as precise and / or torque-resistant as possible can be achieved. Furthermore, the transmission elements 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 designed as stamped parts can be reshaped after stamping. In the exemplary embodiment shown, at least one ring gear 15, at least one planet carrier 13, at least one planetary gear 14, at least one driven gear 11 and / or at least one sun gear 12 are designed as, for example, stamped parts, in particular, fine stamped parts, fine cut parts and / or precision stamped parts. In the exemplary embodiment shown, two ring gears 15 designed as stamped parts form a ring gear unit for the multi-stage planetary gear transmission 4. Furthermore, in the exemplary embodiment shown, at least one planet carrier 13 comprises at least one bearing section for at least one planet wheel 14. By means of the at least one bearing section, at least one planet wheel 14, preferably a plurality of, for example three or five planet wheels 14, can be accommodated by at least one planet carrier 13 and / or rotatably supported about a planet wheel axle 31. At least one planet carrier 13 and at least one planet wheel 14 form a planetary unit. Additionally or alternatively, the gear transmission 5 and / or the planetary transmission 4 has at least one dual transmission wheel. In the exemplary embodiment shown, the at least one dual transmission wheel comprises at least one transmission pinion 8 and at least one transmission wheel 7, or at least one sun wheel 12 and at least one driven wheel 11. The two transmission elements 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 can also be designed as stamped parts, wherein they are placed against each other and / or connected to each other after stamping and / or forming.

[0038] In the exemplary embodiment shown, at least one ring gear 15 and / or a ring gear unit of the planetary gear transmission 4 is accommodated in a non-displaceable manner in the housing 40 of the actuator drive 1. For this purpose, at least one ring gear 15 and / or the ring gear unit comprises at least one fixing section 17. The fixing section 17 is designed to correspond to the support section 43 of the housing 40, so that they bear against each other when the planetary gear transmission 4 and / or the actuator drive 1 is used as intended. Thus, at least one ring gear 15 can be supported in the housing 40, in particular releasably, fixedly and / or non-rotatably supported.

[0039] If a rotational movement is now generated or introduced with the aid of the motor 3, at least one drive pinion 6 rotates about the drive shaft 27, at least one transmission wheel 7 rotates about the transmission shaft 28, at least one transmission pinion 8 rotates about the transmission shaft 28, at least one intermediate pinion 9, 10 rotates about at least one intermediate pinion shaft 30, at least one driven wheel 11 rotates about the driven shaft 29, and / or at least one planetary wheel 14 rotates about at least one planetary wheel shaft 31.

[0040] As described above, the planetary gear transmission 4 in the illustrated embodiment is designed as a multi-stage, in particular a two-stage planetary gear transmission 4. Therefore, the planetary gear transmission 4 includes at least two planetary units, at least two ring gears 15 and / or at least one ring gear unit. When the actuator 1 is used as intended, the teeth of the two planetary wheels 14 spaced apart in the axial direction AR of the actuator 1 mesh with the teeth of the corresponding ring gear 15 and / or the ring gear unit. Since the teeth of the ring gear 15 and / or the ring gear unit are spaced apart from each other or the spacing between the teeth is designed as a cavity, the weight reduction of the planetary gear transmission 4 can be achieved.

[0041] The actuator drive 1 comprises a bearing unit 2, which supports the motor 3 and at least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 of the actuator drive 1 when the actuator drive 1 is used as intended. The bearing unit 2 comprises at least one fixing element 16 and at least one ring gear 15. By means of at least one fixing element 16, the motor 3 can be fixed and / or supported in the housing 40 of the actuator drive 1. For this purpose, the at least one fixing element 16 can accommodate the motor 3, for example in the region of the drive pinion 6. Preferably, the at least one ring gear 15 accommodates at least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 of the actuator drive 1. By means of the fixing element 16, the motor 3 can be fixed to the drive gear transmission 5 and / or the planetary gear transmission 4. In this way, the spacing between the individual spur gears can remain constant. This can reduce the wear of the spur gears.

[0042] The bearing unit 2 further comprises at least one bearing shaft 18, 19, 20, wherein when the bearing unit 2 is used as intended, the at least one toothed ring 15 and the at least one fixing element 16 are connected, in particular directly connected, via the at least one bearing shaft 18, 19, 20. Preferably, the at least one bearing shaft 18, 19, 20 is designed as an independent bearing pin. Additionally or alternatively, the at least one toothed ring 15 and / or the at least one fixing element 16 may comprise at least one bearing shaft 18, 19, 20. With the aid of the at least one bearing shaft 18, 19, 20, two toothed rings 15 designed as stamped parts can be additionally or alternatively connected to each other and / or fixed to each other. Preferably, at least one toothed ring 15 has at least one bearing shaft 18, 19, 20 and / or at least one receiving cavity 21, 22, 23 for at least one bearing shaft 18, 19, 20. In the exemplary embodiment shown, at least one toothed ring 15 comprises at least one receiving cavity 21, 22, 23, into which at least one bearing shaft 18, 19, 20 can be inserted and / or received. When the bearing unit 2 is used as intended, at least one bearing shaft 18, 19, 20 is received in at least one receiving cavity 21, 22, 23, in particular in a non-displaceable and / or releasable manner.

[0043] Additionally or alternatively, at least one fixing element 16 preferably has at least one bearing shaft 18, 19, 20 and / or at least one bearing opening 24, 25, 26 for at least one bearing shaft 18, 19, 20. In the exemplary embodiment shown, at least one fixing element 16 comprises at least one bearing opening 24, 25, 26 through which at least one bearing shaft 18, 19, 20 protrudes. When the bearing unit 2 is used as intended, at least one bearing shaft 18, 19, 20 is supported in at least one bearing opening 24, 25, 26, in particular transversely to the axial direction AR. In the region of at least one bearing shaft 18, 19, 20, preferably, at least one toothed ring 15 and at least one fixing element 16 abut against each other along the axial direction AR. At least one bearing shaft 18, 19, 20 can also be restrained and / or fixed, in particular along the axial direction AR, for example by a housing 40, so that they cannot be unintentionally separated from each other when the actuator 1 is used as intended.

[0044] At least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, in particular at least one transmission wheel 7, at least one transmission pinion 8 and / or at least one intermediate pinion 9, 10 is accommodated and / or supported by means of at least one bearing shaft 18, 19, 20. In the exemplary embodiment shown, the first bearing shaft 18 accommodates at least one transmission wheel 7 and / or at least one transmission pinion 8. Additionally or alternatively, the second bearing shaft 19 accommodates at least one first intermediate pinion 9, and / or the third bearing shaft 20 accommodates at least one second intermediate pinion 10. Preferably, the first bearing shaft 18, the second bearing shaft 19 and / or the third bearing shaft 20 are connected to at least one gear ring 15, preferably to both gear rings 15, in particular in a non-displaceable manner. Thus, at least one gear ring 15, preferably both gear rings 15, comprises a first receiving cavity 21 for the first bearing shaft 18, a second receiving cavity 22 for the second bearing shaft 19 and / or a third receiving cavity 23 for the third bearing shaft 20. Additionally or alternatively, at least one fixing element 16 comprises a first bearing opening 24 for the first bearing shaft 18, a second bearing opening 25 for the second bearing shaft 19 and / or a third bearing opening 26 for the third bearing shaft 20. Thus, at least one gear ring 15 and at least one fixing element 16 can be connected to one another via at least three bearing shafts 18, 19, 20.

[0045] Preferably, the first bearing opening 24 forms an interference fit and / or a transition fit with the first bearing shaft 18. The first bearing opening 24 is circumferentially in contact with the first bearing shaft 18. Thus, when the bearing unit 2 is used as intended, the first axial distance 32 between the transmission shaft 28 and the drive shaft 27 and / or the second axial distance 33 between the transmission shaft 28 and the driven shaft 29 can be designed to be constant and / or unchangeable.

[0046] Preferably, at least one compensating play 34, 35 is formed or arranged between at least one of the bearing openings 24, 25, 26 and the at least one bearing shaft 18, 19, 20. As a result, when the actuator 1 is used as intended, the at least one fixing element 16 can be moved to the at least one ring gear 15, in particular to a limited extent. The at least one compensating play 34, 35 can be designed, for example, as a compensating element and / or as Figure 1 The exemplary embodiment shown shows a spacing. At least one bearing shaft 18, 19, 20 can be moved within a compensating play 34, 35, which is designed in particular as a spacing. Preferably, at least one bearing shaft 18, 19, 20 each has at least two ends: a first end 38 and a second end 39. When the actuator drive 1 is used as intended, the first end 38 points to the housing cover 42 of the housing 40. When the actuator drive 1 is used as intended, the second end 39 points to the housing lower part 41 of the housing 40. Preferably, the second end 39 of at least one bearing shaft 18, 19, 20 is arranged in at least one receiving cavity 21, 22, 23, and / or at least one toothed ring 15 at least partially projects beyond at least one bearing shaft 18, 19, 20 opposite to the axial direction AR. On the other hand, preferably, the first end 38 is arranged at at least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, and / or at least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 at least partially projects beyond at least one bearing shaft 18, 19, 20 in the axial direction AR. Preferably, at least one bearing shaft 18, 19, 20, preferably the first bearing shaft 18, the second bearing shaft 19 and / or the third bearing shaft 20, is spaced apart from at least one housing 40 of the actuator drive 1, in particular in the axial direction AR. The at least one bearing shaft 18, 19, 20, preferably the first bearing shaft 18, the second bearing shaft 19 and / or the third bearing shaft 20 is therefore supported only on one side, in particular only in the bearing unit 2 and / or by means of the bearing unit 2. In this way, tolerance cross-linking by the housing 40 can be avoided.

[0047] Figure 2 1 shows a schematic perspective view of a bearing unit 2 according to an exemplary embodiment. The bearing unit 2 is shown here in the form of an exploded view in order to better visualize the individual components or elements. Here, at least one fastening element 16, at least one bearing shaft 18, 19, 20 and / or at least one toothed ring 15 are shown spaced apart from one another. In addition, Figure 2 In the exemplary embodiment of the present invention, at least one intermediate pinion 9, 10 is shown as an example. Figure 1 The execution of the drive 1 in the bearing unit 2 is similar. from Figure 2As can be seen in the exemplary embodiment of the third bearing opening 26 and / or the second bearing opening 25, for example, is designed as an elongated opening. By means of this configuration, for example, a first compensating clearance 34 can be formed between the second bearing opening 25 and the second bearing shaft 19, and / or a second compensating clearance 35 can be formed between the third bearing opening 26 and the third bearing shaft 20. Thus, the spacing of the at least one fixing element 16 relative to the at least one gear ring 15 can be ensured by means of the elongated opening. However, the two compensating clearances 34, 35 are shown here in a very exaggerated manner. It is also possible that at least one compensating clearance 34, 35 is provided by a clearance fit and / or a transition fit of at least one bearing shaft 18, 19, 20 with at least one bearing opening 24, 25, 26. Additionally or alternatively, at least one compensating clearance 34, 35 can be a compensating element. If the second bearing opening 25 and / or the third bearing opening 26 have at least one compensating play 34 , 35 , the at least one securing element 16 can be pivoted to a limited extent to the at least one ring gear 15 , in particular about the first bearing axis 18 and / or about the drive axis 28 , when the actuator 1 is used as intended.

[0048] When the bearing unit 2 is used as intended, the section of at least one bearing shaft 18, 19, 20 that can be accommodated in at least one accommodation cavity 21, 22, 23 of at least one gear ring 15 and / or protrudes through at least one bearing opening 24, 25, 26 can also be referred to as an accommodation section 36. When the bearing unit 2 is used as intended, the section of at least one bearing shaft 18, 19, 20 that accommodates at least one transmission element 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, in particular at least one drive wheel 7, at least one drive pinion 8 and / or at least one intermediate pinion 9, 10 can also be referred to as a bearing section 37. Additionally or alternatively, the at least one bearing section 37 can extend from the region supported by the at least one bearing opening 24, 25, 26 to the second end 38 of the at least one bearing shaft 18, 19, 20. Preferably, the bearing section 37 adjoins a first end 38 of at least one bearing shaft 18, 19, 20 and / or the receiving section 36 adjoins a second end 39 of at least one bearing shaft 18, 19, 20. Thus, the receiving section 36 extends over at least one third, preferably at least half, of the total length of the bearing shaft 18, 19, 20 extending in the axial direction AR. Additionally or alternatively, the receiving section 36 extends together with the bearing section 37 over at least half, preferably at least two thirds, of the total length of the bearing shaft 18, 19, 20 extending in the axial direction AR.

[0049] Reference numerals list 1 Execute the driver 2 Bearing units 3 Motor 4 Planetary gear transmission 5 Transmission Gear Transmission 6 Drive pinion 7 Drive wheel 8 Transmission pinion 9 First intermediate pinion 10 Second intermediate pinion 11 Driven wheel 12 Sun gear 13 Planet carrier 14 Planetary gear 15 Ring gear 16 Fixing elements 17 Fixed segments 18 First bearing shaft 19 Second bearing shaft 20 Third bearing shaft 21. First accommodating chamber 22 Second accommodating chamber 23 Third accommodating chamber 24 First bearing opening 25 Second bearing opening 26 Third bearing opening 27 Drive shaft 28 Drive shaft 29 Driven shaft 30 Intermediate pinion shaft 31 Planetary gear shaft 32 First axis distance 33 Second axis distance 34 First compensation clearance 35 Second compensation clearance 36 Accommodation Section 37 Bearing section 38 First End 39 Second End 40 Shell 41 Lower part of the housing 42 Housing cover 43 Support section AR Axial direction

Claims

1. A bearing unit (2) for a motor (3) and at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14, 15) of an actuator (1), The bearing unit (2) has at least one fixing element (16), by means of which the motor (3) can be fixed and / or supported in a housing (40) of the actuator drive (1), and having at least one ring gear (15), The at least one toothed ring (15) comprises at least one fastening section (17), by means of which the toothed ring (15) can be fixed and / or supported in a rotationally fixed manner in the housing (40), It is characterized in that The bearing unit (2) comprises at least one bearing shaft (18, 19, 20), Therein, the at least one toothed ring (15) and the at least one fastening element (16) are connected, in particular directly connected, via the at least one bearing shaft (18, 19, 20) when the bearing unit (2) is used as intended.

2. Bearing unit according to the preceding claim, characterized in that The at least one toothed ring (15) comprises the at least one bearing shaft (18, 19, 20) and / or at least one receiving cavity (21, 22, 23) for at least one bearing shaft (18, 19, 20), and / or the at least one fixing element (16) comprises at least one bearing shaft (18, 19, 20) and / or at least one bearing opening (24, 25, 26) for at least one bearing shaft (18, 19, 20), When the bearing unit (2) is used as intended, the at least one bearing shaft (18, 19, 20) is preferably received in at least one receiving cavity (21, 22, 23) of the at least one gear ring (15) in a particularly non-movable and / or detachable manner and / or is supported in at least one bearing opening (24, 25, 26) of the fixing element (16).

3. Bearing unit according to any one of the preceding claims, characterized in that The at least one bearing shaft (18, 19, 20) supports at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14) of the actuator drive (1), in particular a transmission gear transmission (5) of the actuator drive (1), and / or the at least one bearing shaft (18, 19, 20) extends along an axial direction (AR) of the actuator drive (1).

4. Bearing unit according to any one of the preceding claims, characterized in that The first bearing shaft (18) supports and / or receives at least one transmission wheel (7) and / or at least one transmission pinion (8), the second bearing shaft (19) supports and / or receives at least one first intermediate pinion (9), and / or the third bearing shaft (20) supports and / or receives at least one second intermediate pinion (10).

5. Bearing unit according to any one of the preceding claims, characterized in that The at least one gear ring (15) has a first receiving cavity (21) for the first bearing shaft (18), a second receiving cavity (22) for the second bearing shaft (19), and / or a third receiving cavity (23) for the third bearing shaft (20), and / or The fixing element (16) has a first bearing opening (24) for the first bearing shaft (18), a second bearing opening (25) for the second bearing shaft (19), and / or a third bearing opening (26) for the third bearing shaft (20).

6. Bearing unit according to any one of the preceding claims, characterized in that The first bearing opening (24) forms an interference fit and / or a transition fit with the first bearing shaft (18), and / or the first bearing opening (24) abuts circumferentially against the first bearing shaft (18), so that when the bearing unit (2) is used as intended, a first axial distance (32) between a drive shaft (27) of the motor (3) and a transmission shaft (28) guided through the first bearing shaft (18) and / or a second axial distance (33) between the transmission shaft (28) and a driven shaft (29) of the planetary gear transmission (4) are designed to be constant and / or unchangeable.

7. Bearing unit according to any one of the preceding claims, characterized in that At least one compensating play (34, 35) is formed between at least one of the bearing openings (24, 25, 26) and at least one of the bearing shafts (18, 19, 20), When the actuator drive (1) is used in the intended manner, the at least one fixing element (16) can thereby be moved, in particular to a limited extent, onto the at least one toothed ring (15).

8. Bearing unit (2) according to any one of the preceding claims, characterized in that A first compensating play (34) is formed between the second bearing opening (25) and the second bearing shaft (19), and / or a second compensating play (35) is formed between the third bearing opening (26) and the third bearing shaft (20), so that when the actuator drive (1) is used as intended, the at least one fixing element (16) can be pivoted to a limited extent to at least one ring gear (15), in particular around the first bearing shaft (18) and / or around the transmission shaft (28).

9. Bearing unit according to any one of the preceding claims, characterized in that The at least one bearing shaft (18, 19, 20) comprises a receiving section (36) and / or a bearing section (37), wherein, when the bearing unit (2) is used as intended, the receiving section (36) is preferably at least partially received and / or arranged in a receiving cavity (21, 22, 23) of at least one toothed ring (15) and / or in a bearing opening (24, 25, 26) of a fixing element (16), and / or the actuator drive (1), in particular at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14, 15) of a transmission gear transmission (5) of the actuator drive (1), is supported and / or received on the bearing section (37).

10. Bearing unit according to any one of the preceding claims, characterized in that The receiving section (36) extends over at least one third, preferably at least half, of the total length of the bearing shaft (18, 19, 20) extending in the axial direction, and / or the receiving section (36) together with the bearing section (37) extends over at least half, preferably at least two thirds, of the total length of the bearing shaft (18, 19, 20) extending in the axial direction (AR).

11. Bearing unit according to any one of the preceding claims, characterized in that The at least one bearing shaft (18, 19, 20) comprises a first end (38) adjoining the bearing section (37) and / or a second end (39) adjoining the receiving section (36).

12. Bearing unit according to any one of the preceding claims, characterized in that The second end (39) of the at least one bearing shaft (18, 19, 20) is arranged in the receiving cavity (21, 22, 23), and / or the at least one gear ring (15) at least partially protrudes beyond the at least one bearing shaft (18, 19, 20) opposite to the axial direction (AR).

13. An actuator (1), in particular for a vehicle component, comprising: at least one housing (40), a motor (3) arranged in the housing (40), a planetary gear transmission (4) and / or a transfer gear transmission (5) arranged in the housing (40) and coupled to the motor (3), and at least one bearing unit (2) for the motor (3) and at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14, 15) of the planetary gear transmission (4) and / or the gear transmission (5) It is characterized in that The at least one bearing unit (2) is designed according to one or more of the preceding claims.

14. Actuator (1) according to the preceding claim, characterized in that When the bearing unit (2) is used as intended, the first end (38) and / or the second end (39) of the at least one bearing shaft (18, 19, 20) is spaced apart from the housing (40), in particular the housing lower part (41) and / or the housing cover (42), of the actuator drive (1).

15. The actuator (1) according to any one of the preceding claims, characterized in that The at least one transmission element (6, 7, 8, 9, 10, 11, 12, 13, 14, 15) and / or the at least one ring gear (15) are designed as a stamped part, in particular a fine stamped part, a fine cut part and / or a precision stamped part.

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