Liquid Discharge Head Sealing Assembly for Angled Mounting
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Solution Overview
Problem
Existing liquid discharge heads face challenges in positioning and securing sealing members at predetermined mounting positions, particularly when the mounting surface is angled relative to the horizontal direction, leading to difficulties in assembly and potential leakage.
Innovation Solution
The liquid discharge head design includes a first flow path member with a mounting surface and engaging portion, and a sealing member with an engaged portion that allows for secure engagement along the vertical direction, ensuring the sealing member is fixed in place during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sealing member is placed on an angled mounting surface during assembly, then the assembly process can be simplified, but the sealing member cannot be held at the predetermined mounting position and may fall off
Solution Approach 1:
The patent applies preliminary action by providing protrusions on the mounting surface before the sealing member is installed. These protrusions are pre-formed structural features that actively engage with corresponding recesses in the sealing member, preventing the sealing member from sliding or falling off during assembly. This preliminary structural preparation ensures reliable positioning without requiring complex assembly procedures or additional holding mechanisms.
2Device complexity
If no positioning means is provided in the flow path member, then the device complexity is reduced, but the sealing member cannot be positioned at the predetermined mounting position
Solution Approach 1:
The patent applies segmentation by dividing the positioning function into two separate components: protrusions formed on the flow path member and corresponding recesses formed in the sealing member. This segmentation allows each component to be manufactured independently with standard precision, while the combined interface achieves high positioning accuracy. The protrusions serve as positive positioning features that guide the sealing member to the correct location without requiring complex overall design.
3Device complexity
If the sealing member is sandwiched horizontally between two flow path members, then the fluidic connection is simplified, but the sealing member requires additional means to prevent falling off in the vertical direction
Solution Approach 1:
The patent applies self-service by designing the protrusions and recesses interface that enables the sealing member to self-position and self-lock during assembly. The protrusions on the flow path member automatically guide the sealing member into the correct position and prevent vertical displacement through mechanical engagement with the recesses. This self-positioning mechanism eliminates the need for external positioning tools or additional assembly steps, making the manufacturing process simpler and more reliable.
Data Source
AI summary
A liquid discharge head, including: a first flow path member including a first communication hole; a second flow path member including a second communication hole; and a sealing member which includes an opening portion that forms a flow path connecting the first communication hole and the second communication hole with each other and which is interposed between the first flow path member and the second flow path member, wherein the first flow path member includes a mounting surface on which the first communication hole opens and which extends along a vertical direction and an engaging portion, and the sealing member includes an engaged portion with which the engaging portion is engageable and the sealing member is fixed to the first flow path member along the mounting surface due to an engagement of the engaging portion and the engaged portion.