Fluid Cartridge Guide Track and Latch Mechanism
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Solution Overview
Problem
Existing fluid cartridge locking mechanisms in printers consume significant space and require substantial force for engagement, often leading to improper connections, leakage, and material wear due to the need for rotational alignment and deflection of engaging elements.
Innovation Solution
A fluid ejection system with a receiving structure that uses a guide track and latch track mechanism to confine cartridge insertion and ejection to a single dimension, employing a latch arrangement with a pivot arm and spring-loaded ejector to ensure secure, space-efficient, and low-force connections, while preventing rotational movement and allowing for proper alignment of fluidic and electrical interfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional lock mechanisms (bail or deforming snap finger) are used to maintain air and liquid tight connections, then secure sealing is achieved, but significant space is consumed within the printer and substantial force is required for engagement
Solution Approach 1:
The locking mechanism is divided into two functional parts: a guide track for alignment and a latch track for securing. This segmentation allows each component to perform its specific function efficiently without requiring excessive space or force, resolving the contradiction between reliable sealing and compact design.
Solution Approach 2:
The invention transitions from rotational alignment (multi-dimensional movement) to linear insertion only (single-dimensional movement) through the guide track. This dimensional constraint eliminates the need for complex rotational mechanisms, reducing space consumption while maintaining secure connection through the latch track.
2Reliability
If rotational alignment is required for cartridge insertion to engage interfaces, then proper connection is achieved, but material wear and damage occur due to deflection of engaging elements
Solution Approach 1:
The guide track performs preliminary alignment of the cartridge with the receiving structure before the locking mechanism engages. This pre-alignment ensures that all interfaces (fluidic, electrical, air) are properly positioned prior to locking, eliminating the need for rotational movement during engagement and preventing material wear.
Solution Approach 2:
The rotational alignment function is extracted from the locking mechanism and replaced by the guide track's linear guidance function. This separation allows the locking mechanism to focus solely on securing the connection without the harmful deflections associated with rotational movement.
3Strength
If complex locking mechanisms are used to ensure secure connections, then connection strength is improved, but device complexity increases
Solution Approach 1:
The guide track and latch track are merged into a single integrated structure that performs both alignment and locking functions. This combination simplifies the overall mechanism while maintaining strong connections, as the guide track ensures proper positioning and the latch track provides secure retention in one unified component.
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 provides secure, leak-proof connections with reduced material wear and minimal space consumption, enabling easy insertion and ejection of cartridges with minimal force, ensuring proper alignment and preventing improper connections.
Implementation Method 1
A fluid ejection system with a receiving structure that uses a guide track and latch track mechanism to confine cartridge insertion and ejection to a single dimension, employing a latch arrangement with a pivot arm and spring-loaded ejector
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
Fluid cartridge (3), including interfaces, arranged to be guided along a straight line for connecting the interfaces.