Printer Shutter Assembly Lever Mechanism Load Distribution
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Solution Overview
Problem
The existing printer devices face increased load on the shutter mechanism when the carriage is brought into direct contact, which can compromise the protection performance of the shutter during printing.
Innovation Solution
A printer device design that incorporates a shutter assembly with a lever connected to the carriage, allowing the shutter body to move between retraction and cover positions, reducing the load on the shutter and enhancing protection by using a biasing structure and a switching mechanism to control the lever's position relative to the carriage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the carriage is brought into direct contact with the shutter, then the shutter can be moved to cover the cap, but the load applied to the shutter increases
Solution Approach 1:
A lever is introduced as an intermediary component between the carriage and the shutter body. The lever contacts the carriage and transmits force to the shutter body, allowing the shutter to be moved without the carriage directly contacting it. This intermediary mechanism distributes and reduces the load on the shutter while maintaining the ability to cover the cap effectively.
2Strength
If the shutter is made more robust to handle direct contact, then the load capacity increases, but the device complexity increases
Solution Approach 1:
The lever acts as a mechanical intermediary that provides force multiplication and load distribution. Instead of making the shutter itself more robust to handle direct contact, the lever mechanism allows a lighter, less complex shutter to be used while still achieving the required protection function.
Solution Approach 2:
The shutter assembly is designed with movable components that can dynamically adjust their position. The shutter body moves between a retracted position and a covering position, and the lever can contact the carriage only when needed. This dynamic design reduces the need for an overly robust static structure.
Data Source
AI summary
A printer device includes a carriage that is linearly movable and includes an ink ejector, a cap to prevent ink from drying and movable into contact with the ink ejector, and a shutter assembly to cover the cap when the ink ejector is separated from the cap. The shutter assembly includes a shutter body to open and close an upper portion of the cap and a lever connected to the shutter body and able to contact the carriage.