Partitioned Resin Housing With Guided Lid Alignment

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Solution Overview

Problem

Resin structures with multiple inner regions and lids are difficult to assemble efficiently, leading to reduced productivity due to increased steps required for aligning and attaching multiple lids to a single body.

Innovation Solution

A resin structure design featuring a body with partition walls and protrusions, and lids with inclined surfaces that guide and secure attachment, forming a multilayer wall structure to facilitate easy alignment and enhance rigidity and waterproofing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a body is divided into multiple regions with multiple lids, then functional segmentation and maintainability are improved, but the number of assembly steps increases and productivity deteriorates

Engineering Contradiction:

Improvefunctional segmentationVSAvoidassembly efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The body is divided into multiple regions (first region, second region) with separate lids, allowing functional segmentation for improved maintainability while maintaining efficient assembly through integrated guiding structures

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple guiding structures (first guiding structure, second guiding structure) are integrated into a single lid component, combining multiple alignment functions into one element to reduce assembly steps and improve productivity

Inventive Principle:

Principle #5Merging (Combining)

2Adaptability or versatility

If multiple lids are attached to a body with multiple regions, then regional coverage and functionality are improved, but alignment complexity and assembly difficulty increase

Engineering Contradiction:

Improveregional coverageVSAvoidalignment ease

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Guiding structures act as intermediary elements between the lids and body, providing automated alignment and positioning that simplifies the attachment operation while ensuring precise regional coverage

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The guiding structures create equivalent positioning conditions for multiple lids through symmetric first and second guiding structures, making alignment equally easy for each lid regardless of which region is being covered

Inventive Principle:

Principle #12Equipotentiality

3Adaptability or versatility

If partition walls are added to create multiple regions, then functional organization is improved, but structural complexity and manufacturing difficulty increase

Engineering Contradiction:

Improvefunctional organizationVSAvoidstructural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The partition walls serve multiple functions: they divide the body into functional regions, provide mounting surfaces for guiding structures, and contribute to the overall structural integrity, thereby reducing the need for additional separate components

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12471224B2Resin structure

Publication Date: 2025.11.11 YAZAKI CORP

AI summary

A resin structure includes a body divided into regions and a lid to cover one of the regions. The body includes a first partition wall extending in a partition direction to partition a pair of regions. The lid covers one of the pair of regions and includes a second partition wall extending along the first partition wall. The first partition wall has a protrusion at an end of the first partition wall, the protrusion protruding toward the second partition wall, and having a first inclined surface inclined in a manner gradually approaching a distal end side in the partition direction toward a distal end of the protrusion away from the first partition wall. The second partition wall has a second inclined surface inclined along the first inclined surface. The lid is to be attached to the body being guided by the second inclined surface facing the first inclined surface.