Liquid Receiving Device Circumference Wall Protrusion
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Solution Overview
Problem
In liquid ejecting devices, the liquid may creep up the circumference wall of the receiving unit due to capillary force, leading to potential leakage.
Innovation Solution
A liquid receiving device with a receiving unit and a joining member, where the receiving unit has a reception wall and a circumference wall with a reception port, and the joining member extends along the circumference wall with a protruding portion inward from the circumference wall, reducing the likelihood of liquid creeping and leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiving unit has a simple structure without additional members, then the device complexity is low, but liquid may creep up the circumference wall due to capillary force causing leakage
Solution Approach 1:
The circumference wall is segmented into multiple sections by adding joining members at different heights. This segmentation creates multiple barriers that interrupt the capillary action pathway, preventing liquid from creeping continuously up the wall while maintaining a relatively simple overall structure.
Solution Approach 2:
Joining members are introduced as intermediary elements between the reception wall and the outer environment. These members act as mediators that block liquid creep through capillary forces without requiring fundamental changes to the basic receiving unit structure.
2Reliability
If the joining member extends fully along the circumference wall, then liquid creep is effectively blocked, but the manufacturing complexity and cost increase
Solution Approach 1:
Instead of requiring the joining member to extend fully along the entire circumference wall, the invention applies the joining member locally at specific critical positions where liquid creep is most likely to occur. This localized approach maintains effective leakage prevention while significantly reducing manufacturing complexity and material usage.
Solution Approach 2:
The joining member extends partially along the circumference wall rather than completely. This partial action is sufficient to block the capillary-driven liquid creep pathway at critical points, achieving the necessary reliability without the excessive complexity of full-length extension.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces the risk of liquid leakage by minimizing liquid creep up the circumference wall, ensuring reliable operation of the liquid ejecting device.
Implementation Method 1
the liquid may creep up the circumference wall due to a capillary force at a corner portion formed in the circumference wall
Data Source
AI summary
A liquid receiving device includes a receiving unit configured to receive a liquid from an ejecting unit configured to eject the liquid, and a joining member joined to the receiving unit, wherein the receiving unit includes a reception wall configured to receive the liquid, and a circumference wall extending from the reception wall, the circumference wall defines a reception port through which the liquid discharged from the ejecting unit passes, and includes a joining surface joined to the joining member, and the joining member extends along the circumference wall, and includes a protruding portion extending inward from the circumference wall.