Lid Lever Locking Mechanism at the Fully Closed Position

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing lid opening and closing devices lack a lock mechanism to inhibit operation at the fully closed position, leading to increased components and intricacy.

Innovation Solution

A lid opening and closing device that uses a drive lever and spindle lever mechanism, where the drive shaft and spindle shaft are eccentrically positioned, allowing the lid to be locked at the fully closed position without additional components by inhibiting rotation through a lock operating part when external force is applied.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a lock mechanism is added to lock the lid at the fully closed position, then the safety and reliability of the device is improved, but the number of components and device complexity increases

Engineering Contradiction:

Improvesafety of the lid opening and closing deviceVSAvoidnumber of components of the lid opening and closing device

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The lock mechanism is merged with the existing drive lever and spindle lever mechanism. The manipulation receiving portion of the spindle lever integrates the lock operating part, which interacts with the manipulation portion of the drive lever to provide locking functionality. This merging eliminates the need for separate lock components while maintaining safety.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The drive lever and spindle lever mechanism serves multiple functions: it provides the primary opening and closing operation of the lid, and simultaneously provides the locking function through the lock operating part. This multi-functionality reduces the need for additional dedicated lock components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If a separate drive mechanism for the lock member is provided, then the locking functionality is improved, but the intricacy and manufacturing cost increase

Engineering Contradiction:

Improvelocking functionalityVSAvoidmanufacturing costs of the lid opening and closing device

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The locking drive function is merged into the existing motor-driven lever mechanism. The same motor that drives the opening and closing operation also provides the driving force for locking through the drive lever's interaction with the lock operating part. This eliminates the need for a separate drive mechanism and reduces manufacturing costs.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The motor and its associated drive lever mechanism serve dual purposes: driving the opening and closing operation and providing the locking function. This multi-functionality reduces the overall number of drive mechanisms needed, simplifying manufacturing.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250305343A1Lid opening and closing device

Publication Date: 2025.10.02 U SHIN LTD

AI summary

A groove serving as a manipulation receiving portion of a spindle lever of a lid opening and closing device has a side wall serving as a lock operating part that is brought into contact with a manipulation portion of a drive lever and inhibits the drive lever from rotating in an opening drive direction when the spindle lever is biased in an opening operating direction by external force acting on a lid at a fully closed position to move the lid to a fully open position.