Vehicle Door Drive Device with Integrated Guide and Cable Transmission

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Solution Overview

Problem

Existing drive devices for sun blinds in motor vehicles require lateral guide rails that occupy valuable space, leading to a reduction in window area and aesthetic impairment, while also being costly and difficult to install.

Innovation Solution

A compact drive device design using a single-strand window lifter mechanism with a flexible cable transmission means integrated into the guide means, eliminating the need for additional installation space and allowing for safe and reliable operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If lateral guide rails are used to guide the carriage, then reliable operation of the sun blind is achieved, but the window area is reduced and installation complexity increases

Engineering Contradiction:

Improvereliable operationVSAvoidwindow area

Core Design Contradiction:

ReliabilityVSArea of stationary object

Solution Approach 1:

The guide means and transmission means are merged into a single integrated structure. The guide means serves dual functions: guiding the thrust element and housing the transmission means (flexible cable), eliminating the need for separate lateral guide rails and maximizing window area

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The guide means is designed as a multi-functional component that simultaneously provides guidance for the thrust element and houses the transmission means, replacing multiple separate components (guide rails and transmission system) with a single universal structure

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If lateral guide rails are installed, then the sun blind can be reliably guided, but installation effort and cost increase

Engineering Contradiction:

Improveguidance reliabilityVSAvoidinstallation effort

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The guide means and transmission means are combined into one integrated component, reducing the number of parts to be installed and assembled, thereby significantly reducing installation effort and cost while maintaining guidance reliability

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The multi-functional guide means replaces multiple separate components, simplifying the installation process and reducing the skill level required for installation while ensuring reliable operation

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If guide rails extend into the window area, then the sun blind can be properly guided, but the aesthetic appearance is impaired

Engineering Contradiction:

Improveguidance functionVSAvoidaesthetic appearance

Core Design Contradiction:

ReliabilityVSShape

Solution Approach 1:

The guide means is integrated with the vehicle body structure rather than extending into the window area as separate rails, creating a cleaner aesthetic appearance while maintaining the guidance function through the integrated design

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2409865B1Drive device for moving a covering element, door component and method for assembling the drive device

Publication Date: 2018.08.15 MACAUTO INDUSTRIAL CO LTD

Figure 1
Figure 2~3
Figure 4A~4B

AI summary

The device has a drive (33), a guide arrangement (31), a thrust element (32) connected to the drive, guided in the guide element and for connection to the cover element for the purpose of moving the cover element. The drive is coupled to the thrust element via a transfer arrangement for driving the thrust element, whereby the transfer arrangement extends at least partly into the guide arrangement. Independent claims are also included for the following: (A) a vehicle door assembly (B) and a method of fitting a drive device.