Image Reading Device Cable Routing in Housing Space
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Solution Overview
Problem
The increasing number of power supply cables in image reading devices and multifunction apparatuses leads to an increase in device size and can adversely affect the layout of other components, particularly due to noise interference, necessitating effective cable routing without enlarging the device.
Innovation Solution
The design incorporates a housing space between the outer cover and the peripheral wall of the base member, accommodating the power supply cables and allowing them to be routed efficiently, thereby reducing the device's size and minimizing noise interference from other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of power supply cables is increased to support more functions, then the functionality of the device is improved, but the device size increases and cable routing becomes more difficult
Solution Approach 1:
The power supply cables are nested within the housing space that is already formed by the base member and outer cover structure. The cables are routed through the space between the peripheral wall and outer cover, utilizing existing structural volume rather than adding separate cable routing channels, thus avoiding device size increase while supporting multiple functions.
Solution Approach 2:
The cable routing solution moves from a two-dimensional surface routing to a three-dimensional space utilization by directing cables through the housing space between the peripheral wall and outer cover. This vertical/dimensional routing allows multiple cables to be accommodated without increasing the horizontal footprint of the device.
2Object-affected harmful factors
If power supply cables are routed away from noise-generating components, then cable interference is reduced, but the routing complexity and device size increase
Solution Approach 1:
The housing space is segmented into distinct regions by partition walls that separate power supply cables from noise-generating components such as the drive unit and motor. This segmentation creates dedicated cable pathways that are physically isolated from sources of electromagnetic interference, reducing noise impact without requiring complex external routing.
Solution Approach 2:
The partition walls and housing structure act as intermediary elements between the power supply cables and noise-generating components. These intermediaries provide physical separation and shielding, blocking electromagnetic interference from reaching the cables while maintaining a compact device layout.
Data Source
AI summary
An image reading device includes: a base member; an outer cover; a top plate member; a carriage; a reading unit; a first drive unit; and a first power supply cable. The base member has a bottom wall, and a peripheral wall defining a moving space in combination with the base member. The outer cover covers the peripheral wall such that the inner surface of the outer cover is opposed to and spaced apart from the outer surface of the peripheral wall. The inner surface and the outer surface define a housing space therebetween. The reading unit reads an image from a medium placed on a platen glass while the carriage is reciprocatingly moved inside the moving space along a moving direction. The first drive unit is supported at the base member and reciprocatingly moves the carriage. The first power supply cable is connected to the first drive unit and accommodated in the housing space.