Motor Vehicle Door Lock Pivotable Latch Housing Gap Adjustment

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Solution Overview

Problem

Existing motor vehicle door locks struggle to minimize the gap between the vehicle body and hood or door to nearly 0 mm, affecting aesthetics and air resistance, with previous solutions failing to provide effective and aesthetically pleasing results.

Innovation Solution

A motor vehicle door lock design where the latch housing is pivotably connected to a base element on the vehicle body, utilizing a locking and/or opening device that engages outside the latch housing, allowing for precise adjustment and minimization of the gap between the body and door or hood through a combination of mechanical and motorized drive mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If a conventional locking mechanism with a fixed latch housing is used, then the structure is simple and reliable, but the gap between the body and hood/door cannot be minimized to nearly 0 mm

Engineering Contradiction:
Improvegap minimizationVSAvoidlatch housing connection structure
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The latch housing is made pivotable relative to the base element, transforming it from a fixed static structure to a dynamic adjustable one. This allows the latch housing to rotate around a shared axis with the rocker, enabling precise gap adjustment to nearly 0 mm while maintaining structural simplicity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The rocker and latch housing share a common axis of rotation, merging their rotational movements. This combined movement allows the closing aid to effectively minimize the gap between body and hood/door while using a compact motorized drive, resolving the contradiction between precision and complexity

Inventive Principle:
Principle #5Merging (Combining)

2Manufacturing precision

If a motorized drive is used to minimize the gap, then the gap can be reduced to nearly 0 mm, but the device complexity and space requirements increase

Engineering Contradiction:
Improvegap adjustment precisionVSAvoidmotorized drive system
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The motorized drive acts eccentrically on the closing aid, merging the rotational movement of the rocker with the pivoting movement of the latch housing around a shared axis. This allows one motorized drive to control both components simultaneously, reducing overall system complexity while achieving precise gap adjustment to nearly 0 mm

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The closing aid acts as an intermediary between the motorized drive and the latch housing. The motorized drive acts eccentrically on the closing aid, which then transfers the movement to pivot the latch housing, enabling precise control with a compact drive system

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS10309130B2Motor vehicle door lock
Publication Date: 2019.06.04 KIEKERT AG
  • US10309130B2 patent drawing
  • US10309130B2 patent drawing

AI summary

The invention relates to a motor vehicle door lock which is equipped with a body-side lock housing and a hood-or-door-side locking bolt or vice-versa. The invention also relates to a locking and/or opening device. According to the invention, the locking and/or opening device engages on the outer side on the lock housing for the adjustment thereof with respect to a fixed base element in the course of a closing/opening process.