Document Cover Grip Protrusion for Asymmetric ADF Weight
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Solution Overview
Problem
The installation site restrictions and asymmetric weight distribution of automatic document feeders (ADFs) in image reading apparatuses make it difficult for users to handle the document cover effectively, leading to poor opening and closing experiences due to positional deviations in the application of weight, causing distortion and discomfort.
Innovation Solution
The design includes a movable document cover with a lower layer portion surrounding the conveyor and an upper layer portion featuring a grip portion that protrudes forward, allowing users to easily access and handle the cover, even when the center of gravity is deviated, by providing a wider grip area and adjusting the hinge positions to balance the weight distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the document cover is equipped with a concave at the front-end center as a grip portion, then the structure is simple, but it becomes difficult for users to access and handle the cover when installation site restrictions exist
Solution Approach 1:
The grip portion is designed to protrude from the wall in the front-rear direction, extending into the space between the cover and the main body. This dimensional extension allows users to access the grip portion from multiple angles and positions, solving the accessibility problem when installation site restrictions prevent direct access to the front-end center.
2Adaptability or versatility
If the ADF has asymmetric weight distribution with deviated center of gravity, then the conveyer can be positioned flexibly, but the document cover becomes distorted and difficult to open and close
Solution Approach 1:
The protruding grip portion acts as a counterbalancing element. When a user applies force to the grip portion to open or close the cover, the resulting torque helps counteract the asymmetric weight distribution of the ADF, stabilizing the cover's motion and preventing distortion despite the deviated center of gravity.
3Ease of operation
If the grip portion is located at the front-end center, then the structure is simple, but the user cannot easily access it when installation site and setup direction create spatial constraints
Solution Approach 1:
The grip portion protrudes from the wall in the front-rear direction, creating an extended surface that users can access from various angles. This dimensional extension transforms the grip portion from a single-point contact at the front-end center to a multi-access surface, allowing users to reach it even when installation site restrictions limit their approach direction.
Data Source
AI summary
An image reading apparatus includes: a main body including a document table; a document cover that includes a rear end portion supported by the main body, and a front end portion configured to be movable with respect to the main body; a conveyer that is disposed in the document cover and is configured to feed a document; and a reader that is provided in the main body. The document cover includes a lower layer portion having a wall surrounding front, rear, left and right of the conveyer and an upper layer portion covering over the conveyer. The lower layer portion includes a bottom having a shape covering the document table. The wall extends upward from an outer periphery of the bottom. The upper layer portion includes a grip portion which protrudes frontward from the upper layer portion.