Vehicle Flap Drive With Nested Spindle Rotor for Tight Spaces
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Solution Overview
Problem
Existing vehicle flap drives require large installation space, particularly in limited areas like side doors, and face challenges with visual appearance, acoustic perceptibility, and sealing against environmental influences.
Innovation Solution
The spindle drive is arranged within a rotor, connected to a motor via an adapter, with a gear system that includes a worm gear and spur gear to reduce dimensions, and incorporates an overload clutch and bearing to manage space and environmental sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional spindle drive is installed in side doors, then the drive can adjust the flap, but the installation space requirement becomes excessively large
Solution Approach 1:
The spindle drive is arranged within a rotor, which is rotatably mounted in the housing. This nested configuration allows the spindle drive components to be contained within the rotor volume, significantly reducing the overall installation space requirement while maintaining the drive's functional capabilities and sealing integrity
2Volume of moving object
If the spindle drive is arranged within a rotor, then installation space is minimized, but the complexity of the drive system increases
Solution Approach 1:
The rotor serves multiple functions: it acts as a containing structure for the spindle drive, provides rotational movement, and functions as part of the sealing system. This multi-functionality reduces the need for separate components, thereby minimizing installation space without proportionally increasing system complexity
3Ease of operation
If the push tube is moved out of the rotor, then accessibility is improved, but the sealing against environmental influences is compromised
Solution Approach 1:
The push tube is designed to be dynamically extendable from the rotor when needed for operation or maintenance, while the rotor itself remains sealed within the housing. This dynamic configuration allows temporary accessibility without compromising the permanent sealing integrity of the rotor assembly against environmental influences
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design minimizes installation space, enhances sealing against environmental factors, and provides precise control over flap movement with reduced friction and improved durability.
Implementation Method 1
the first gear stage, which is in particular a worm gear
Implementation Method 2
the motor drives a second gear stage, in particular a spur gear, via the first gear stage, in particular the worm gear, which in turn drives the rotor
Implementation Method 3
the spindle drive comprises a threaded spindle with a nut and a push tube and the push tube is connected to the threaded spindle via the nut, wherein the push tube is moved by a translational movement
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
Drive (1) for a flap, wherein the drive (1) comprises a housing (2), a motor (3) and a spindle drive (4), wherein the motor (3) and the spindle drive (4) are connected to each other in a drive-related manner and enable a motorized adjustment of the flap, wherein the drive (1) moves the flap to at least an open position and a closed position, wherein the spindle drive (4) comprises a threaded spindle (14) with a nut (15) and a push tube (16) and the push tube (16) is connected to the threaded spindle (14) via the nut (15), wherein the push tube (16) is moved by a translational movement, wherein the spindle drive (4) is arranged inside a rotor (17) and the motor (3) drives the rotor (17), wherein the rotor (17) is connected to the threaded spindle (14).