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CN-122014084-A - Spindle drive assembly

CN122014084ACN 122014084 ACN122014084 ACN 122014084ACN-122014084-A

Abstract

The present invention relates to a spindle drive assembly comprising a motor shaft which can be driven in rotation by a motor and defines a motor axis, a spindle assembly comprising a spindle having a spindle axis, wherein the spindle is coupled to the motor shaft via a worm gear and can be driven for an extending movement and a retracting movement, a first attachment assembly and a second attachment assembly, the first attachment assembly being designed to attach the motor assembly and the spindle assembly to a first upper assembly in a pivotable manner about a first pivot axis, and the second attachment assembly being arranged at one end of the spindle and being designed to attach the spindle to a second upper assembly in a pivotable manner about a second pivot axis. According to the invention, the second attachment assembly is formed such that the second pivot axis is spaced apart from the spindle axis by a predetermined offset.

Inventors

  • Markus Reifenhoize
  • Sebastian Schmelpfenig

Assignees

  • 斯塔比卢斯有限责任公司

Dates

Publication Date
20260512
Application Date
20251103
Priority Date
20241111

Claims (10)

  1. 1. A spindle drive assembly (10), the spindle drive assembly comprising: -a motor assembly (12) comprising a motor shaft drivable in rotation by a motor and defining a motor axis (L12); -a spindle assembly (14) comprising a spindle (14 a) having a spindle axis (L14), wherein the spindle (14 a) is coupled with the motor shaft via a worm gear and can be driven for an extending movement and a retracting movement; -a first attachment assembly (16) designed to attach the motor assembly (12) and the spindle assembly (14) to a first upper layer assembly in a pivotable manner about a first pivot axis (22), and -A second attachment assembly (32) arranged at one end of the spindle (14 a) and designed to attach the spindle (14 a) to a second upper layer assembly in a pivotable manner about a second pivot axis (40); characterized in that the second attachment assembly (32) is formed such that the second pivot axis (40) is spaced from the spindle axis (L14) by a predetermined offset (V).
  2. 2. The spindle drive assembly (10) of claim 1, Wherein the second attachment assembly (32) comprises a crank (34) fixedly connected to the spindle (14 a) or formed on the spindle (14 a), the crank defining the second pivot axis (40), in particular by comprising a joint eye (34 a).
  3. 3. The spindle drive assembly (10) of claim 2, Wherein the second attachment assembly (32) further comprises a connecting element (36) pivotally connected to the crank (34) and designed for attachment to the second upper assembly, wherein a bolt is preferably provided for articulation of the connecting element with the crank (34).
  4. 4. Spindle drive assembly (10) according to one of the preceding claims, Wherein the predetermined offset (V) is between 5mm and 20mm, preferably about 10mm.
  5. 5. Spindle drive assembly (10) according to one of the preceding claims, Wherein the first pivot axis (22) substantially coincides with the motor axis (L12).
  6. 6. The spindle drive assembly (10) of claim 5, Wherein the first attachment assembly (16) comprises two angular elements (18, 20) pivotable relative to each other about the first pivot axis, a first of the two angular elements being assigned to the motor assembly (12) and the spindle assembly (14) and a second of the two angular elements being assigned to the first upper layer assembly, Wherein the angular elements (18, 20) are connected by means of a rotary joint (24) which is arranged essentially on the extension of the motor axis (L12) on the side of the spindle assembly (14) facing away from the motor assembly (12).
  7. 7. Spindle drive assembly (10) according to the preceding claim, Wherein the angular elements (18, 20) are further coupled via a curved guide (26) arranged outside the motor assembly (12) or the spindle assembly (14) with respect to a radial direction perpendicular to the motor axis (L12).
  8. 8. Spindle drive assembly (10) according to the preceding claim, Wherein the curved guide (26) is formed by an elongated hole (28) which is assigned to one (18) of the two angle-shaped elements and a guide pin (30) which is guided in the elongated hole (28) and which is assigned to the other (20) of the two angle-shaped elements.
  9. 9. A door apparatus for a vehicle, the door apparatus comprising: A door which can be joined in an articulated manner to the body of the vehicle by means of a hinge connection, Wherein the vehicle door has a recess in which the spindle drive assembly (10) according to one of the preceding claims is partly accommodated and attached by its first attachment assembly (16), Wherein the spindle (14 a) of the spindle drive assembly (14) extends from the recess through a door aperture.
  10. 10. Vehicle comprising at least one door device according to the preceding claim, wherein the second attachment assembly (32) of the spindle drive assembly (10) is attached to the body of the vehicle, in particular to an a-pillar or a B-pillar.

Description

Spindle drive assembly Technical Field The present invention relates to a spindle drive assembly comprising a motor shaft which is drivable in rotation by a motor and defines a motor axis, a spindle assembly comprising a spindle having a spindle axis, which is coupled to the motor shaft via a worm gear and which is drivable in an extending movement and a retracting movement, a first attachment assembly designed to attach the motor assembly and the spindle assembly to a first upper assembly in a pivotable manner about a first pivot axis, and a second attachment assembly arranged at one end of the spindle and designed to attach the spindle to a second upper assembly in a pivotable manner about a second pivot axis. Background It is known that in a particular mounting configuration of the spindle drive assembly it is necessary to be able to pivot the motor assembly and the spindle assembly on the one hand, and the upper layer assembly (to which the spindle is attached) with respect to them on the other hand. In general, this applies to any pair of upper layer assemblies that are coupled to one another via a hinge connection and that can be driven by a corresponding spindle drive assembly to pivot about a hinge axis resulting therefrom. One particularly relevant case relates to door drives and the like in vehicles, in which a vehicle door or, for example, a tailgate is connected in an articulated manner to the body of the corresponding vehicle by means of a hinge connection and is intended to be actuated or able to pivot automatically by means of such a spindle drive assembly. Since, with a relative pivoting of the door or cover plate with respect to the vehicle body, the corresponding connection points of the spindle drive will also together perform a curved pivoting movement, it must be possible to achieve pivotability with respect to the corresponding upper layer assembly in the region of these connection points. In other words, in the spindle drive assembly mounted in this way, each stroke position of the spindle is assigned to its corresponding pivot position relative to the two upper assemblies, these positions being achieved by the first pivot axis and the second pivot axis. To ensure such pivotability of the spindle drive assembly, the prior art often uses joint eyes for the connection between the second attachment assembly, i.e. the spindle and the second upper layer assembly, which joint eyes are located directly at the end of the spindle and thus coincide with the spindle axis. Thus, the second pivot axis is formed by a bolt inserted into the joint eye and then connected to the second upper assembly via a gusset that can be correspondingly pivoted relative to the spindle. In addition, in such spindle drive assemblies known from the prior art, via the first attachment assembly already mentioned, a pivotable connection of the motor assembly and the spindle assembly to the first upper layer assembly is provided, wherein different measures are taken here in respect of the design of the first attachment assembly. However, particularly in applications involving automatically actuatable vehicle doors, the available installation space for receiving and connecting the spindle drive assembly is often very limited. Typically, the motor assembly and spindle assembly are pivotally disposed in a recess in the corresponding vehicle door, and the spindle extends from the recess through the aperture in the direction of the vehicle body. Thus, there are significant limitations in both the space that can be used for the pivot angle covered by the motor assembly and spindle assembly within the corresponding vehicle door, and in the width of the door aperture in which the spindle can pivot. The mentioned pivoting movements of the respective spindle drive assembly can be influenced in terms of structure by the position of the first pivot axis and the second pivot axis, wherein different measures have been taken, in particular with regard to the arrangement of the first pivot axis, and in some cases also a pivotable mounting of the spindle itself in relation to the motor assembly has been achieved. Generally, the pivot angles of the motor assembly and the spindle assembly on the one hand, and the radius of the pivoting movement of the second pivot axis about the hinge axes of the first upper assembly and the second upper assembly on the other hand are proportional to each other. Thus, in such an application, the smallest possible radius of the second pivot axis about the hinge axis between the two upper layers automatically also results in a smaller pivoting movement of the motor assembly and spindle assembly within the vehicle door. However, this advantage of the smaller radius of the second pivot axis about the hinge axis between the two upper layers is offset by the desired door aperture position. In order to avoid collisions of the spindles here, the radii mentioned have to be chosen sufficiently large, wherein this dif