Push Lid Structure With Finger-Catch Prevention Walls
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Solution Overview
Problem
The existing pushing type lid opening/closing devices for containers, such as dust boxes, often cause hands or fingers to get caught between the lid and the container's wall face, leading to potential damage when the lid is manually opened and closed.
Innovation Solution
Incorporating hand and/or finger catch prevention wall members attached to the attachment frame or integrally with it, which are positioned close to the lid's side edge to prevent fingers from being caught, while allowing the lid to open and close without interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lid is manually pushed inwards to open it, then the lid can be opened and closed automatically, but the hand may be caught between the side edges of the lid and the wall face of the opening causing injury
Solution Approach 1:
A pushing member is introduced as an intermediary tool between the user's hand and the lid. This pushing member has a pushing portion that contacts the lid and a hand holding portion for user grip. The pushing member transfers the opening force from the user to the lid while preventing direct hand contact with the hazardous gap between the lid and wall face, thus eliminating the injury risk while maintaining automatic closing functionality
2Ease of operation
If the hand holding portion is positioned closer to the pushing portion, then the pushing operation becomes more convenient, but the structure becomes more complex
Solution Approach 1:
The hand holding portion and pushing portion are merged into a single integrated pushing member structure. The hand holding portion is formed as an extension of the pushing portion, creating a unified component rather than separate parts. This integration reduces the number of components and assembly steps while providing a convenient grip position close to the pushing area, thus improving ease of operation without significantly increasing structural complexity
Data Source
AI summary
A pushing type lid 20 of a container is pivotally supported adjacent to an upper edge wall of an opening 2 of width smaller than width of a front board 1BF of a box body 1B and adapted to be manually pushed inwards so as to be opened and to be automatically closed when a hand is released from the lid 20 and there is provided a pair of hand and/or finger catch prevention wall member 50 to prevent a hand and/or fingers from being caught between the lid 20 and the wall face of the opening 2.