Document Cover Closer Fire Shielding for Oil Contamination Control
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Solution Overview
Problem
Conventional document cover closers for office equipment do not adequately cover internal features, exposing them to fire in case of ignition and allowing contamination from lubricant oil, which can lead to fire spread and document damage.
Innovation Solution
A document cover closer design featuring first and second fire spread preventing covers that almost entirely cover internal features and components coated with oil, using a combination of hinge shafts, cam sliders, and elastic members to ensure comprehensive coverage and prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional document cover closer is used with minimal covering, then the structure remains simple and easy to manufacture, but internal features are exposed to fire and lubricant oil contamination
Solution Approach 1:
The fire spread preventing cover is divided into multiple segments (first cover portion, second cover portion, third cover portion) that can rotate independently around the hinge shaft. This segmentation allows the cover to adapt to different opening angles and maintain fire protection effectiveness while managing structural complexity
Solution Approach 2:
The cover structure transitions from a static minimal design to a dynamic multi-segmented system that can rotate and adjust. The elastic member provides dynamic tension to maintain cover positioning, enabling the system to respond to different operational states while maintaining fire protection
2Reliability
If fire spread preventing covers are added to cover internal features, then fire protection is improved, but the device complexity increases
Solution Approach 1:
The fire spread preventing cover serves multiple functions: it protects against fire exposure, prevents lubricant oil contamination of documents, and maintains a sealed environment for internal features. This multi-functionality justifies the added complexity by consolidating multiple protection needs into a single integrated system
Solution Approach 2:
The cover utilizes a flexible hinge mechanism that allows rotation while maintaining continuous coverage. The thin film-like cover portions can adapt to different positions while maintaining fire protection, reducing material complexity while improving reliability
3Object-affected harmful factors
If the cover structure is made more comprehensive to prevent oil contamination, then document cleanliness is improved, but manufacturing complexity increases
Solution Approach 1:
The fire spread preventing cover is integrated with the hinge mechanism and elastic member into a unified assembly. This merging of components simplifies manufacturing by reducing the number of separate parts that need to be assembled, while still providing comprehensive protection against oil contamination
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively shields internal features from fire and prevents contamination by lubricant oil, reducing the risk of fire spread and maintaining equipment cleanliness.
Implementation Method 1
an elastic member resiliently provided between the cam slider and the actuating slider
Implementation Method 2
a pressurized member that presses a document onto a document platen
Implementation Method 3
a supporting member that is rotatably and pivotally supported on the attaching member via a first hinge shaft; a lift member that overlaps the supporting member and is pivotally supported on the supporting member via a second hinge shaft
Data Source
AI summary
A document cover closer provided with a fire spread preventing cover capable of almost entirely covering internal features of the document cover closer, in order to prevent exposure of the internal features to flare in case of an ignition at peripheral electrical equipment, as well as office equipment using such a document cover closer. The document cover closer comprises a fire spread preventing cover capable of almost entirely covering internal features with their parts coated with oil being exposed and of almost securely preventing a contamination of an end of a document placed on a document platen by lubricant oil or rust-preventive oil. The document cover closer comprises an attaching part attached to the main body side of office equipment having a document cover; a supporting part rotatably and pivotally supported on the attaching part via a first hinge shaft; and a lift part attached to the document cover.