Switching Gear Axial Movement for Fast Power Transmission
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Solution Overview
Problem
The existing image recording apparatus requires a long time for the rocking operation to mesh the switching gear with the receiving gears, leading to a prolonged time from receiving an image recording instruction to discharging the recorded medium.
Innovation Solution
A power transmission switching device with a switching gear that can be moved between two positions to selectively mesh with either the first or second output gear, utilizing a mechanism with play to allow efficient rotation and reduce the need for rocking operations, integrated into a liquid ejection apparatus for quick gear switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the switching gear is rotated forwardly and reversely a predetermined number of times to mesh with the receiving gears, then power transmission is achieved, but the operation time becomes considerably long
Solution Approach 1:
The switching gear is preliminarily positioned at a standby position where it is already meshed with the first receiving gear. When power transmission to the second driven mechanism is needed, the switching gear is simply moved axially to engage with the second receiving gear, eliminating the need for time-consuming forward and reverse rotations.
Solution Approach 2:
The switching gear is designed to be movable in the axial direction between different positions, allowing it to dynamically engage with different receiving gears (first or second) as needed. This dynamic repositioning replaces the static rocking operation with a more efficient linear movement.
2Adaptability or versatility
If the switching gear is meshed selectively with multiple receiving gears, then a single drive source can power multiple mechanisms, but the switching operation requires prolonged rocking time
Solution Approach 1:
The switching gear is preliminarily positioned at a standby position where it is already meshed with the first receiving gear. When power transmission to the second driven mechanism is needed, the switching gear is simply moved axially to engage with the second receiving gear, eliminating the need for time-consuming forward and reverse rotations.
Solution Approach 2:
Instead of switching between gears using rotational movement in the same plane (rocking operation), the invention uses axial movement in a different dimension. The switching gear moves along the axial direction to engage with different receiving gears, transforming the switching mechanism from rotational to linear motion.
Data Source
AI summary
A power transmission switching device includes a transmission mechanism. The transmission mechanism includes: a first gear; a second gear; a switching gear movable between a first position for mesh with the first gear and a second position for mesh with the second gear; an input gear meshed with the switching gear; and a power transmitter comprising the input gear and configured to transmit the driving power from the drive source to the switching gear. Play is formed in the power transmitter so as to allow the input gear to rotate in its rotational direction.