Rotatable Operation Handle for Ink Tank Supply Stability
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Solution Overview
Problem
Existing inkjet printing apparatuses face instability and operational challenges when attaching and detaching ink tanks of different volumes, particularly due to large lift amounts required and the instability of operation handles during lift operations.
Innovation Solution
A supply apparatus with a rotatable operation handle coupled to a link, an engaging portion for maintaining connection, and a rotation restriction unit that prevents operation handle rotation when disengaged, enhancing stability and reducing operational complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the operation handle is rotated to assist insertion/removal operations, then the ease of operation is improved, but the stability of the operation handle deteriorates during lift operations
Solution Approach 1:
The operation handle is designed to be rotatable relative to the link, allowing it to rotate during insertion/removal operations to provide mechanical advantage, while the engaging portion maintains stability during lift operations by engaging with the operation handle to prevent unwanted rotation
Solution Approach 2:
The engaging portion acts as an intermediary between the operation handle and the link, selectively engaging to restrict rotation when stability is needed (during lift operations) and disengaging when rotation is needed (during insertion/removal operations)
2Volume of moving object
If the ink tank is made compact for arrangement in common containing portion, then the volume is reduced, but the lift amount becomes large
Solution Approach 1:
The operation handle rotates in a horizontal plane while the ink tank moves vertically, separating the rotational motion (for insertion/removal assistance) from the vertical lift motion, allowing compact tank design without compromising insertion ease
3Ease of operation
If the operation handle rotates freely, then the ease of operation is improved, but the stability during lift operation deteriorates
Solution Approach 1:
The engaging portion is positioned to engage with the operation handle before lift operations begin, preemptively preventing unwanted rotation and instability during the vertical movement of the ink tank
Data Source
AI summary
A supply apparatus includes a holder for a liquid container, a link coupled to the holder, an operation handle rotatably coupled to the link, an engaging portion and a rotation restriction unit. The operation handle operate connection and disconnection of the liquid container to and from a supplying portion by rotation with respect to the link. The engaging portion maintains a connection state between the supplying portion and the liquid container by engaging with the operation handle. The unit can restrict rotation of the operation handle when the engaging portion and the operation handle are in a disengaged state.