Loading Base Elastic Member Prevents Gear Disengagement
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Solution Overview
Problem
Image reading devices with extendable loading bases often experience malfunctions due to external loads, particularly disengagement of gears, which can cause damage and hinder proper operation.
Innovation Solution
A medium conveyance device featuring a mechanism that converts the motion of the first loading base into the motion of a second loading base using an interlocking mechanism and an elastic member to prevent gear disengagement, ensuring the device's stability and functionality under external loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the loading base is made extendable to accommodate long documents, then the device can handle longer originals, but the mechanism becomes more complex and prone to gear disengagement under external loads
Solution Approach 1:
The elastic member is pre-installed in the mechanism to cushion against external loads before they cause damage. When external forces are applied during document loading, the elastic member absorbs the shock and prevents gear disengagement, thereby protecting the mechanism while maintaining the extendable loading base capability
2Ease of operation
If an automated extension mechanism is added to the loading base, then operational convenience is improved, but the complexity of the mechanism increases and susceptibility to malfunction rises
Solution Approach 1:
The elastic member is configured to automatically engage and disengage based on the loading base position and external load conditions, without requiring additional control mechanisms. This self-regulating feature maintains automated operation convenience while minimizing the addition of complex control systems
3Productivity
If the loading base mechanism is designed for easy extension, then operational speed is improved, but the mechanism becomes more vulnerable to external forces causing gear disengagement
Solution Approach 1:
The elastic member acts as an intermediary element between the gear mechanism and external loads. It mediates the force transmission, allowing rapid extension while filtering out harmful external forces that could cause gear disengagement, thus protecting the mechanism without slowing down the extension process
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
The solution effectively prevents gear disengagement and damage, enhancing the reliability and convenience of the image reading device by maintaining the stability of the loading base mechanism even when external loads are applied.
Implementation Method 1
an elastic member that is elastically deformed when the second loading base is not arranged in a position corresponding to a position in which the first loading base is arranged by the mechanism
Data Source
AI summary
A medium conveyance device includes a first loading base that has a first loading surface formed thereon and is movably supported on a main body, a second loading base that has a second loading surface formed thereon and is movably supported on the first loading base so that the second loading surface is positioned next to with the first loading surface and so that the second loading surface overlaps with the first loading surface, a mechanism that converts motion of the first loading base into motion of the second loading base so that the second loading base is arranged in a position corresponding to a position in which the first loading base is arranged, and an elastic member that is elastically deformed when the second loading base is not arranged in a position corresponding to a position in which the first loading base is arranged.