Liquid Discharge Head Intermediate Member for Filter Replacement
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Solution Overview
Problem
Existing liquid discharge heads, such as inkjet heads, face challenges in efficiently replacing filters without disrupting the liquid channel, as traditional methods require cutting or destroying parts of the channel, and detachable filters often need to be drained and have air bubbles removed, making the process time-consuming.
Innovation Solution
A liquid discharge head design featuring a liquid port, frame with a liquid channel, and an intermediate member with connectable portions allows for easy attachment and detachment of filters without disrupting the channel, enabling quick replacement and maintenance without cutting or destroying other members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a filter is fixed by adhesive to the channel part, then the filter is securely fixed, but it requires cutting or destroying part of the channel to replace the filter
Solution Approach 1:
The liquid discharge head is divided into separable components: the channel part and the filter part. The filter is made as a detachable component with connection portions that interface with the channel part, allowing the filter to be segmented from the main body for easy replacement without damaging the channel structure.
Solution Approach 2:
Connection portions serve as intermediary structures between the filter and channel part. These connection portions enable secure attachment during use while allowing for clean separation when replacement is needed, mediating between the need for strong fixing and easy replaceability.
2Ease of repair
If a detachable filter is used, then the filter can be replaced without cutting the channel, but it requires discharging liquid and removing air bubbles after attachment
Solution Approach 1:
The connection portions are pre-designed with alignment features and connection structures that guide the filter into proper positioning during attachment. This preliminary design of the connection interface enables quick connection without requiring time-consuming liquid discharge or air bubble removal procedures after attachment.
3Reliability
If the filter is attached to the channel part, then liquid can flow through the filter, but the channel structure must be modified or cut for fixed filters
Solution Approach 1:
The liquid discharge system is segmented into modular components where the filter is a separate detachable unit. This segmentation eliminates the need to modify or cut the channel structure, as the filter connects to the existing channel part through standardized connection portions, maintaining structural integrity while enabling liquid flow.
Data Source
AI summary
A liquid discharge head includes a liquid port, a frame including a liquid channel in which a liquid supplied from the liquid port flows, and an intermediate member between the liquid port and the frame. The liquid port includes a first connection portion connectable to the frame, the frame includes a second connection portion connectable to the first connection portion of the liquid port, and the intermediate member includes a third connection portion connectable to the second connection portion of the frame and a fourth connection portion connectable to the first connection portion of the liquid port.