Power Switching Gear Mechanism for Shared Scan and Feed Drive
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Solution Overview
Problem
The high cost of separate power sources for flatbed scanning and automatic paper feeding mechanisms in image scanning devices is a significant issue.
Innovation Solution
A power switching device that shares a single power source for both translational and rotational motions by using an active gear, transmission gear, translation mechanism, pushing member, rotating mechanism, and reset mechanism to switch power between the two, allowing the active gear to alternate between meshing with a runner for translational motion and a transmission gear for rotational motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate power sources are used for flatbed scanning mechanism and automatic paper feeding mechanism, then each mechanism can operate independently and reliably, but the overall system cost increases significantly
Solution Approach 1:
The patent combines two separate power sources into a single shared power source that serves both the flatbed scanning mechanism and the automatic paper feeding mechanism. This is achieved through a power switching device that allocates power to different mechanisms based on their operational needs, thereby reducing system cost while maintaining independent operation capability of each mechanism
Solution Approach 2:
The patent implements a dynamic power switching mechanism that can dynamically allocate power between the flatbed scanning mechanism and the automatic paper feeding mechanism. The switching device responds to operational states of both mechanisms, enabling flexible power distribution that maintains reliability while reducing the need for separate dedicated power sources
Data Source
AI summary
A power switching device for switching power between translational motion and rotational motion includes an active gear, a transmission mechanism, a translation mechanism, a functional gear, and a reset mechanism. The active gear can rotate in a first direction or a second direction opposite the first direction. The translation mechanism includes a runner and a pushing member. The active gear can switch between a first position and a second position. In the first position, the active gear meshes with the runner and rotates in the first direction or the second direction to drive the runner to rotate. In the second position, the active gear meshes with the transmission gear and rotates in the second direction to drive the functional gear to rotate.