Vehicle Door Closure Latch Double Pull Release Mechanism

Solution Overview

Problem

Existing closure latches for vehicle passenger doors require complex arrangements or additional actuators to integrate a double pull inside release function, increasing complexity and packaging, while regulatory requirements demand efficient power-operated features.

Innovation Solution

A closure latch design that utilizes a power child lock actuator to manage the double pull inside release function, incorporating a ratchet and pawl mechanism, power release actuator, inside release mechanism, double pull actuation mechanism, and power child lock mechanism, allowing for reduced complexity and efficient operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a double pull inside release function is integrated into closure latches using conventional methods, then the operational and regulatory requirements are met, but the device complexity and packaging requirements increase due to the need for supplemental power-operated actuators or complex arrangements

Engineering Contradiction:

Improveoperational and regulatory requirementsVSAvoidcomplexity and packaging

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The power child lock actuator is designed to perform multiple functions: it controls the child lock feature and also manages the double pull inside release function. By making the actuator universal, the patent eliminates the need for a separate supplemental actuator, thereby reducing device complexity and packaging requirements while still meeting operational and regulatory requirements for both child lock and double pull release functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent combines the child lock actuator and the double pull release mechanism into a single integrated system. The actuator lever, pawl, and ratchet components are merged to create a unified mechanism where one actuator handles both child lock engagement/disengagement and the double pull release operation, reducing the overall number of components and simplifying the latch assembly

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If additional power-operated actuators are added to provide double pull inside release function, then the desired power-operated features are achieved, but the device complexity and packaging increase

Engineering Contradiction:

Improvepower-operated featuresVSAvoidcomplexity and packaging

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The power child lock actuator is designed to perform multiple functions: it controls the child lock feature and also manages the double pull inside release function. By making the actuator universal, the patent eliminates the need for a separate supplemental actuator, thereby reducing device complexity and packaging requirements while still meeting operational and regulatory requirements for both child lock and double pull release functions

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The existing power child lock actuator is utilized to also perform the double pull release function. The actuator lever and associated mechanical components (pawl, ratchet, link lever) are configured so that the same actuator that engages/disengages child lock also controls the release mechanism, allowing the system to serve itself rather than requiring additional dedicated actuators

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS10683682B2Closure latch for vehicle door having double pull release mechanism driven by child lock actuator

Publication Date: 2020.06.16 MAGNA CLOSURES INC

AI summary

The present disclosure relates to a closure latch for a vehicle door, and more particularly to a closure latch for a vehicle door equipped with a passive entry feature. To this end, the present disclosure relates to the use of a power child lock actuator to manage the double pull function of the closure latch.