Angled Document Destruction Lid for Secure Disposal
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Solution Overview
Problem
Document destruction lids for containers often lack a secure attachment to the container, allowing for potential retrieval of confidential documents due to slots being too large or not securely fastened, risking exposure of private information.
Innovation Solution
A document destruction lid with a skirt extending around its periphery for secure attachment to the container, featuring a vertical sidewall and a security structure with angled front and rear walls in the document slot, along with a key lock mechanism, to prevent document retrieval while allowing easy disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the slot in the document destruction lid is made large to allow easy document disposal, then ease of operation is improved, but security deteriorates as documents can be easily retrieved
Solution Approach 1:
The security structure employs asymmetric geometry where the front wall and rear wall are angled away from each other to create a one-way document path. Documents can easily enter through the slot and travel down the angled walls into the container, but retrieval is prevented because the angled configuration creates mechanical interference when attempting to withdraw documents. This asymmetric design resolves the contradiction by making the insertion path easy while the retrieval path difficult.
2Reliability
If the lid is made securely attached to the container to prevent unauthorized removal, then reliability is improved, but device complexity increases due to additional securing structures
Solution Approach 1:
The lid is segmented into distinct functional components: a skirt portion for attachment to the container, a lid body containing the document slot, and a security structure with angled walls. The skirt can be separately attached to the container using simple fastening methods, while the lid body with the security structure remains integrated. This segmentation allows the secure attachment function to be achieved through a simple, separate component rather than a complex integrated system.
3Reliability
If the vertical sidewall height is increased to match the container lip height for secure attachment, then reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The design specifies that the vertical sidewall height should be greater than or equal to 70% of the container lip height, rather than requiring an exact match. This parameter change provides manufacturing flexibility, allowing for reasonable tolerances while still achieving the functional goal of secure attachment. The 70% threshold ensures sufficient overlap with the container lip for stability without requiring precision manufacturing.
Data Source
AI summary
Disclosed herein is a document destruction lid for preventing the retrieval of documents inserted through the lid. The lid comprises a skirt extending around a periphery of the lid for securing the lid to a container. A vertical sidewall extending downward from a top surface of the lid, having a height greater than or equal to 70% of a height of a lip of the container. A security structure for depositing the documents extends from a top surface of the lid. The security structure comprises a front wall, a horizontal slot, a rear wall extending upwards from the top surface of the lid opposite the front wall, and a top surface joining the front wall to the rear wall. The front wall and rear wall are angled away from each other to make document retrieval difficult while still allowing easy disposal of the documents.