Window Lifter Cable Routing via Telescopic Arm
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Solution Overview
Problem
Existing window lifting devices for motor vehicles face challenges in accommodating intelligent, electrically switchable glass panes due to the need for adjustable and stable electrical connections that can withstand vehicle loads and maintain orderliness.
Innovation Solution
A window lifting device with a current-carrying line arranged between a stationary vehicle body and a movable driver, utilizing sliding contacts and a winding device to ensure secure and space-efficient routing, integrating power supply and control interfaces, and employing a telescopic arm for adjustable connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a current-carrying line is routed between the stationary vehicle body and the movable driver, then electrical connection is achieved, but the wiring becomes complex and space-consuming
Solution Approach 1:
The patent introduces a telescopic arm as an intermediary component between the stationary vehicle body and the movable driver. This telescopic arm serves as a mediator that accommodates the relative motion while maintaining electrical connection, thereby simplifying the overall wiring arrangement and reducing spatial requirements.
Solution Approach 2:
The current-carrying line is designed to be flexible and dynamically adjustable rather than rigid and fixed. This allows the electrical connection to adapt to the changing positions of the movable driver and telescopic arm, maintaining reliability while reducing wiring complexity through dynamic accommodation of motion.
2Adaptability or versatility
If the window pane is made adjustable for intelligent glass functionality, then functionality is improved, but maintaining stable electrical connection becomes difficult
Solution Approach 1:
The telescopic arm acts as an intermediary that bridges the stationary electrical connection point on the vehicle body and the movable driver connected to the adjustable window pane. This mediator maintains stable electrical connection while allowing the window pane to move freely for intelligent glass functionality.
Solution Approach 2:
The current-carrying line and telescopic arm assembly serves multiple functions simultaneously: it provides mechanical support for the movable driver, enables electrical connection for the adjustable window pane, and accommodates the full range of motion required for intelligent glass operation. This multi-functionality maintains connection stability while supporting adjustability.
3Volume of moving object
If a winding device is used to route the current-carrying line, then space efficiency is improved, but mechanical complexity increases
Solution Approach 1:
The patent merges the winding device functionality with the existing telescopic arm structure. The current-carrying line is routed through the telescopic arm itself, combining the mechanical support function and the cable routing function into a single integrated component. This reduces overall mechanical complexity while achieving space-efficient wiring arrangement.
Solution Approach 2:
The telescopic arm serves multiple functions: it provides mechanical support for the movable driver, enables electrical connection, and acts as a guide/routing path for the current-carrying line. This multi-functionality eliminates the need for separate winding devices, reducing mechanical complexity while maintaining space efficiency.
Data Source
Figure 1~2
Figure 3~4
Figure 5a~5f
AI summary
The invention relates to a window lifting device (2) for a motor vehicle, which is designed to raise and lower a window pane (4) of the motor vehicle, characterized in that a current-carrying line (20) is provided, which can be arranged with a first end (21.1) fixedly relative to a vehicle body and with a second end (21.2) fixedly relative to a component that is movable relative to the vehicle body, in particular a driver (12, 14) of the window lifting device (2).