Ring gear assembly, gearbox, vehicle door actuator, vehicle door and vehicle

Abstract

Ring gear arrangement for a gear of a vehicle door actuator, comprising at least two ring gears (6), the outer contour of which is non-circular and which are received in a form-fitting and / or force-fitting manner along their entire extent in the circumferential direction by an inner contour of a common housing part (4) which is complementary to the outer contour and is non-circular, wherein the outer contour and the inner contour each have three corners, wherein the outer contour and the inner contour are formed as mutually complementary polygonal profiles and each as a triangular profile, wherein the triangular profile is in the form of a P3G profile - or.triangular profile - is formed, the corners of which are rounded and thus shaped like corners, wherein the at least two ring gears (6) are arranged one behind the other in the housing part (4), wherein an intermediate carrier (8) is provided between the ring gears (6), which in turn is shaped non-circularly in analogy to the two ring gears (6) and is inserted into the housing (4) in a form-fitting manner and is rotationally fixed and stationary relative to the housing part (4).

Description

[0001] The invention relates to a ring gear arrangement, a transmission with such a ring gear arrangement, a vehicle door actuator with such a transmission, a vehicle door with such a vehicle door actuator and a vehicle with such a vehicle door actuator.

[0002] The document DE 102016200019 A1 describes a ring gear arrangement for a transmission of a vehicle door actuator. The document DE 102011 004 908 A1 describes a ring gear arrangement for a planetary gear.

[0003] An object underlying the invention is to provide a compact and cost-effective vehicle door actuator that opens and closes a vehicle door by means of an electric motor.

[0004] This object is achieved by a ring gear arrangement proposed and protected according to claim 1.

[0005] A ring gear assembly for a transmission of a vehicle door actuator is proposed, wherein the ring gear assembly comprises at least two ring gears whose outer contours are non-circular and which are positively and / or non-positively received along their entire circumferential extent by a complementary and preferably closed non-circular inner contour of a housing part. The outer contour and the inner contour each have three corners.

[0006] It is proposed to round the three corners, thus creating a corner-like shape. This reduces the notch effect, preventing high stress peaks when subjected to a torque that must be supported.

[0007] It is further proposed to form the outer contour and the inner contour as complementary polygonal profiles with three such corners, which are rounded and thus shaped like corners.

[0008] Accordingly, the outer contour and the inner contour, which are joined together in a form-fitting and / or force-fitting manner, each form a polygonal profile in the shape of a triangle (or trigon).

[0009] In addition, these polygon profiles have equal sides and equal interior angles, i.e. they form a so-called regular polygon profile.

[0010] The two joined polygonal profiles are each formed as triangular profiles. The triangular profile is shaped as a P3G profile (or triangular-like profile) with rounded corners, thus creating a corner-like shape. The P3G profile represents a regular and standardized polygonal profile (see DIN 32711).

[0011] The non-circular joints described above have in common that they can transmit high torques. They are also based on simple assembly.

[0012] Furthermore, compared to other positive, non-positive, and / or material-to-material connections, they advantageously allow for dissimilar material pairings. Thus, the ring gear and / or the housing part accommodating the ring gear can be made of a metallic material and / or a non-metallic material, in particular a plastic.

[0013] The polygonal non-circular connections described above are very space-saving, so that they promote the compactness of an actuator.

[0014] Another feature of the P3G profile is that they are self-centering and smooth running. They also have a very low notch effect, preventing high stress peaks when subjected to a torque load.

[0015] Furthermore, a gear for a vehicle door actuator with the ring gear arrangement described above is proposed and protected (cf. claim 3).

[0016] The gearbox is designed as a multi-stage planetary gear in order to be able to achieve the desired torque amplification even in a very limited and available installation space.

[0017] Furthermore, a vehicle door actuator with such a gear is proposed and protected (cf. claim 6), which is intended for pivoting a vehicle door and / or tailgate of a vehicle about a pivot point of a hinge.

[0018] Furthermore, a vehicle door with such a vehicle door actuator is proposed and protected (cf. claim 7).

[0019] A vehicle door is understood to be a front or rear door or even a tailgate of a vehicle.

[0020] In addition, a vehicle with such a vehicle door actuator is proposed and protected (see claim 8).

[0021] A vehicle is understood to mean any type of vehicle that is powered either by an internal combustion engine and / or an electric motor, but in particular passenger cars and / or commercial vehicles.

[0022] The invention will be explained in detail below with reference to the accompanying drawings. Further advantageous developments of the invention will become apparent from the dependent claims and the following description of preferred embodiments. In these figures: Fig. 1 a proposed ring gear arrangement in a first sectional view, Fig. 2 which in Fig. 1 shown ring gear arrangement in a second sectional view and Fig. 3 which in Fig. 1 shown ring gear arrangement in a perspective view.

[0023] The proposed ring gear arrangement 2 is provided for a transmission, in particular a multi-stage transmission of a vehicle door actuator for the electromotive pivoting of a vehicle door and / or a tailgate of a vehicle about a pivot point of a hinge.

[0024] According to the proposal, a ring gear 6 is inserted in a form-fitting manner into a tube-like, preferably closed-shaped or formed housing part 4, for example in the form of a deep-drawn housing - for example made of steel or plastic - wherein an outer contour of the ring gear 6 interacts in a form-fitting manner along its entire extent in the circumferential direction with a preferably closed circumferential inner contour of the housing part 4.

[0025] The outer contour and the inner contour are each non-circular and complementary to each other and each form a so-called polygonal profile in the form of a so-called P3G profile, which is a triangular profile or a triangular-like profile whose corners are rounded (cf. DIN 32711).

[0026] In principle, however, the proposed non-circular connection between the outer contour of the ring gear 6 and the inner contour of the housing part 4 can - depending on the requirements - form a positive connection and / or a non-positive connection, depending on whether a relative movement in the longitudinal direction of the housing part 4 occurs between the ring gear 6 and the housing part 4.

[0027] Thus, the ring gear 4 and / or housing 6 can be made of a metallic material and / or a non-metallic material, for example in the form of a plastic.

[0028] Fig.Figure 2 illustrates a section of, for example, a three-stage planetary gear system, in which three, in particular helical planetary gear sets, each comprising such a proposed ring gear 6, are arranged one behind the other. An intermediate carrier 8 can be seen between the ring gears 6, which in turn - analogous to the two ring gears 6 - is non-circularly shaped and is inserted into the housing 4 in a form-fitting manner - and is rotationally fixed and stationary relative to the housing part 4 - and on which a rolling or plain bearing is supported.

[0029] Depending on the installation position or position of use of the vehicle door actuator, i.e. whether it is arranged on the vehicle door or the tailgate or alternatively on an associated vehicle pillar and / or another associated body section, it moves with the vehicle door / tailgate or relative to it when the vehicle door / tailgate is pivoted.

[0030] The vehicle door actuator can form a hinge section on the vehicle door or tailgate side, or even on the vehicle pillar or body side. Alternatively, the vehicle door actuator does not constitute a hinge section, but merely a drive unit that, as such, enables the aforementioned pivoting in addition to a separate hinge.

[0031] A vehicle pillar is understood to mean, in particular, an A, B, or C pillar of a vehicle. Such a pillar can also be understood to mean the section of a vehicle body opposite which a tailgate is hinged.

[0032] For the sake of simplicity, the components of the transmission arranged internally to the described ring gear arrangement 2 and driven by an electric motor, which are rotatable relative to the ring gear arrangement 2, are neither shown nor described in this disclosure.

[0033] Although exemplary embodiments are explained in the foregoing description, it should be noted that numerous modifications are possible. Furthermore, it should be noted that the exemplary embodiments are merely examples and are not intended to limit the scope of protection, applications, or structure in any way. Rather, the foregoing description provides the skilled person with a guide for implementing at least one exemplary embodiment, whereby various changes, particularly with regard to the function and arrangement of the described components, can be made without departing from the scope of protection as it results from the claims and equivalent combinations of features.

Claims

[1] Ring gear arrangement for a gear of a vehicle door actuator, comprising at least two ring gears (6), the outer contour of which is non-circular and which are received along their entire extent in the circumferential direction by a complementary non-circular inner contour of a common housing part (4) in a form-fitting and / or force-fitting manner, wherein the outer contour and the inner contour each have three corners, wherein the outer contour and the inner contour are formed as mutually complementary polygonal profiles and each as a triangular profile, wherein the triangular profile is in the form of a P3G profile - or.triangular profile - is formed, the corners of which are rounded and thus shaped like corners, wherein the at least two ring gears (6) are arranged one behind the other in the housing part (4), wherein an intermediate carrier (8) is provided between the ring gears (6), which in turn is shaped non-circularly in analogy to the two ring gears (6) and is inserted into the housing (4) in a form-fitting manner and is rotationally fixed and stationary relative to the housing part (4). [2] Ring gear arrangement according to claim 1, whose ring gear (4) and / or housing part (6) is / are formed from a metallic material and / or non-metallic material, in particular a plastic. [3] Gearbox for a vehicle door actuator with a ring gear arrangement according to one of the preceding claims. [4] Transmission according to claim 3 in the form of a planetary gear. [5] Transmission according to claim 4 in the form of a multi-stage planetary gear. [6] Vehicle door actuator for pivoting a vehicle door and / or a tailgate of a vehicle about a pivot point of a hinge, comprising a gear according to one of claims 3 to 5. [7] Vehicle door with a vehicle door actuator according to claim 6. [8] A vehicle having a vehicle door actuator according to claim 6.

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