Flatbed Scanner Contact Assembly Wear Reduction
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Solution Overview
Problem
The existing paper feeding scanning equipment's scanning module experiences reduced service life due to frictional wear when moving across bridging plates, leading to unstable movement between scanning positions.
Innovation Solution
The design incorporates a contact assembly that abuttingly contacts the bottom surface of the second glass plate, preventing friction with the bridging plate and reducing wear, thereby enhancing the service life and stability of the scanning module's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the contact assembly moves across the bridging plate to enable scanning module movement between positions, then the scanning module achieves operational flexibility, but the contact assembly experiences frictional wear against glass plate corners, reducing service life
Solution Approach 1:
A guide rail is introduced as an intermediary component between the contact assembly and the glass plates. The guide rail receives the contact assembly and guides its movement, preventing direct contact between the contact assembly and the corners of the first and second glass plates. This mediator eliminates the harmful friction while preserving the scanning module's ability to move between positions.
2Manufacturing precision
If the contact assembly abuts against glass plate corners during movement, then the scanning module can be positioned accurately, but the friction accelerates wear and causes unstable movement
Solution Approach 1:
The guide rail serves as a mediator that provides a smooth, continuous surface for the contact assembly to follow during positioning. This eliminates the unstable frictional contact with glass plate corners while maintaining precise positioning capability through the guided movement path.
Solution Approach 2:
The guide rail enables smooth, continuous movement of the contact assembly rather than intermittent contact with corners. This dynamic guidance system ensures stable movement throughout the entire range of motion, not just at discrete positioning points.
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
This design reduces wear on the contact assembly, ensuring smooth and stable movement of the scanning module between positions, thereby extending its service life and improving operational reliability.
Implementation Method 1
the contact assembly produces friction with confronting corners of the first and second glass plates, thereby easily accelerating wear of the contact assembly
Data Source
AI summary
A flatbed scanning device of a paper feeding scanning equipment includes a device casing and a scanning module. The device casing includes a first glass plate, and a second glass plate spaced apart from the first glass plate and having a bottom surface. The scanning module is disposed in the device casing, and including a module body, a scanning assembly disposed in the module body, and at least one contact assembly disposed on the module body. When the scanning module is in an initial position, the scanning assembly is located below the first glass plate, and the at least one contact assembly abuttingly contacts the bottom surface of the second glass plate.