Image Forming Apparatus Board Arrangement Minimizing Wiring Length
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Solution Overview
Problem
Conventional image forming apparatuses have long wiring lengths that increase the risk of short circuits during assembly or part exchange, leading to higher costs and potential electrical issues.
Innovation Solution
The image forming apparatus is designed with a configuration that minimizes wiring length by strategically arranging control and power boards and connectors, ensuring they do not overlap, and using connectors to connect these components in a way that reduces wiring paths, thereby decreasing the overall length of wiring needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control board and power source board are arranged in different positions in the vertical direction to avoid overlap, then the risk of wiring short circuit is reduced, but the wiring length increases
Solution Approach 1:
The patent transitions from a horizontal arrangement to a vertical arrangement of boards and connectors. The control board is positioned above the power source board in the vertical direction, and connectors are strategically placed at upper and lower portions of the control board to enable vertical wiring paths. This dimensional change allows for shorter wiring lengths while maintaining board separation to prevent short circuits.
2Length of stationary object
If the control board is positioned closer to load components to reduce wiring length, then wiring costs decrease, but the board arrangement becomes more complex
Solution Approach 1:
The patent segments the control board into functional regions with connectors positioned at specific locations (upper left, lower left, right sides) to serve different load components. This segmentation allows the control board to be optimally positioned in the vertical direction above the power source board while maintaining short wiring paths to various components through strategically placed connectors, thus reducing overall wiring length without excessive complexity.
3Ease of operation
If wiring is arranged diagonally on the back side to connect control board and load components, then connectivity is achieved, but wiring length and costs increase
Solution Approach 1:
The patent eliminates diagonal wiring arrangements by transitioning to a vertical layout. The control board is positioned above the power source board, and connectors are placed at upper and lower portions of the control board, enabling vertical wiring paths that are shorter than diagonal arrangements while maintaining all necessary connectivity between control board and load components.
Data Source
AI summary
The power source board is arranged at a lower side on the back side of the main body of the image forming apparatus. The load control board is arranged at an upper side in a vertical direction of the power source board in such a manner that the load control board does not overlap with the power source board. For a board and load at a lower side when viewed from a load control board, a connector is arranged near the lower side of the load control board. For a board and load at an upper side of the load control board, a connector is arranged near the upper side of the load control board. Similarly, for boards and loads of right and left side, connectors are arranged near the respective right and left sides of the load control board.