Standardized ECU Module for Closure Latch Assembly
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Solution Overview
Problem
Conventional closure latch assemblies with integrated ECU modules face challenges such as increased complexity and cost due to the need for dedicated ECU modules for each latch module, as well as vulnerability to environmental damage and high deceleration forces.
Innovation Solution
A stand-alone standardized ECU module with an enclosure assembly that can be attached to different latch modules, featuring a power actuator and control unit integrated into a common assembly, providing protection against environmental factors and deceleration forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated ECU module is integrated with each latch module, then the control function is improved, but the device complexity and cost increase
Solution Approach 1:
The patent applies universality by designing a standardized ECU module that can be attached to multiple different latch modules through a standardized attachment arrangement. This single universal ECU module performs the control function for various latch modules, eliminating the need for dedicated ECU modules for each latch module, thereby reducing device complexity and cost while maintaining reliable control functionality.
2Reliability
If the ECU module is integrated with the latch module, then the control reliability is improved, but the vulnerability to environmental damage and deceleration forces increases
Solution Approach 1:
The patent applies segmentation by separating the ECU module from the latch module while maintaining functional integration through the standardized attachment arrangement. This segmentation allows the ECU module to be positioned in a protected location away from environmental damage and high deceleration forces, while still maintaining reliable control over the latch module through electrical connections.
3Ease of manufacture
If a standardized ECU module is used for multiple latch modules, then the manufacturing cost is reduced, but the adaptability requirements increase
Solution Approach 1:
The patent resolves this contradiction by designing both the ECU module and latch modules with standardized attachment arrangements that enable universal compatibility. The standardized interface allows a single ECU module design to work with multiple latch module variants, reducing manufacturing costs through economies of scale while meeting adaptability requirements through the flexible standardized connection system.
Data Source
AI summary
A closure latch assembly includes a latch module having a ratchet and a pawl, with the ratchet being moveable between a striker capture position and a striker release position and the pawl being moveable between a ratchet holding position, whereat the ratchet is maintained in the striker capture position, the a ratchet release position, whereat the ratchet is biased toward the striker release position. An actuator module including a power actuator is operably coupled to a drive gear. The drive gear has an actuation feature fixed thereto. A latch release mechanism operably couples the actuation feature to the pawl, wherein rotation of the drive gear via energization of the power actuator causes the latch release mechanism to move the pawl between the ratchet holding position and the ratchet release position.