Motor Vehicle Door Arrangement Single Drive Ice-Breaking

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Solution Overview

Problem

Existing motor vehicle door arrangements often lack a closure drive, limiting their universal implementation and requiring additional drives for ice-breaking functions, which complicates the design and increases costs.

Innovation Solution

A motor vehicle door arrangement utilizing a single electric motor-driven drive to open the door leaf into a predefined gap position and simultaneously implement safety or open positions of the closure device, enabling dual functionality for opening and closing, including ice-breaker functions, with optional integration into the opening or closure device for compactness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If a single electric motor-driven drive is used for both opening and closing functions, then device complexity is reduced and cost is lowered, but the drive must handle higher forces for ice-breaking operations

Engineering Contradiction:

Improvenumber of drivesVSAvoidforce required for ice-breaking

Core Design Contradiction:

Device complexityVSForce

Solution Approach 1:

The patent combines the opening and closing functions into a single electric motor-driven drive unit. This drive unit integrates the ice-breaker cam mechanism and the closure device actuation capabilities, eliminating the need for separate drives for each function. The merging reduces device complexity and cost while maintaining the ability to handle high forces through the integrated mechanical design.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The drive system incorporates an ice-breaker cam that can be selectively activated to provide high forces only when needed for breaking ice. The cam mechanism dynamically adjusts the force application based on the operational state, allowing the single drive to handle both normal operation and high-force ice-breaking scenarios efficiently.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the electric motor-driven drive acts on both the opening device and closure device, then versatility is improved, but the actuation mechanism becomes more complex

Engineering Contradiction:

Improvedual functionalityVSAvoidactuation mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The electric motor-driven drive is designed as a universal actuator that can perform multiple functions: opening the door, closing the door, actuating the closure device, and enabling ice-breaking operations. This multi-functional design improves versatility while the patent manages the complexity through integrated mechanical linkages and a unified control approach.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent employs a nested arrangement where the ice-breaker cam and closure device actuation mechanisms are integrated within the same drive unit structure. The mechanical components are arranged in a compact, nested configuration that allows multiple functions to be achieved through a single actuator, reducing overall actuation complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Adaptability or versatility

If the door leaf is opened to a predefined gap position for ice-breaking, then the ice-breaker function is achieved, but the opening movement control becomes more complex

Engineering Contradiction:

Improveice-breaker functionVSAvoidopening movement control

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The ice-breaker cam is pre-positioned and pre-configured in the drive mechanism to automatically engage when the door needs to be opened. The cam's geometry is designed in advance to provide the necessary force and movement pattern for breaking ice, eliminating the need for complex real-time control adjustments during the ice-breaking operation.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses a mechanically simple ice-breaker cam design that prioritizes functionality over precision control. The cam provides a straightforward, forceful opening action that achieves ice-breaking without requiring sophisticated control systems, effectively using a simple mechanical element to solve a complex problem.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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

This solution allows for a universally applicable, cost-effective, and structurally simple motor vehicle door arrangement that can efficiently open frozen doors and manage various locking mechanisms with a single electric motor-driven drive, enhancing operational reliability and reducing hardware requirements.

Implementation Method 1

at least one electric motor-driven drive (4), wherein the electric motor-driven drive (4) is configured to open a door leaf (1) into a predefined gap position

Methodology Applied

Scientific EffectElectric motor: Linear Motor

Data Source

PatentUS20250003263A1Motor vehicle door arrangement

Publication Date: 2025.01.02 KIEKERT AG

AI summary

The invention relates to a motor vehicle door arrangement which is equipped with at least one electromotive drive (4, 18) and a closing device (6). The electromotive drive (4, 18) is configured to open a door leaf (1) into a predefined gap position (gap S) in comparison with the motor vehicle body (2) and additionally to implement at least one functional position of the closing device (6). According to the invention, the functional position of the closing device (6) is a safety position and/or an open position.