Accommodation Device Mounting Unit Detachment Protection
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Solution Overview
Problem
There is a risk of damaging the coupling body in accommodation devices, such as liquid ejection apparatuses, when the mounting unit is detached from the housing while the coupling body is still coupled to the main body unit and the mounting unit.
Innovation Solution
The accommodation device includes a housing with a mounting port, a main body unit, a mounting unit, a coupling body, and a contact unit. The mounting unit is designed to move in one direction through the mounting port, and the contact unit contacts the mounting unit to restrict its movement, preventing accidental detachment and potential damage to the coupling body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the mounting unit is designed to be easily detachable from the housing, then the ease of operation is improved, but the reliability deteriorates due to the risk of accidental detachment while the coupling body is coupled
Solution Approach 1:
The contact unit is positioned to contact the mounting unit at a location that prevents upward movement before accidental detachment can occur. This preliminary restriction counteracts the potential harmful action of unintended detachment while the coupling body is still coupled, allowing easy intentional detachment when the coupling body is removed.
2Reliability
If the mounting unit is restricted from moving upward to prevent accidental detachment, then the reliability is improved, but the ease of operation deteriorates due to limited movement freedom
Solution Approach 1:
The guide unit dynamically changes its restriction characteristics based on the position of the mounting unit. The restricting portion limits upward movement when the mounting unit is at positions where accidental detachment could occur, while the allowing portion permits upward movement when the mounting unit reaches positions where detachment is intended and safe.
3Reliability
If the contact unit is positioned to restrict mounting unit movement, then the reliability is improved, but the device complexity increases due to additional components
Solution Approach 1:
The contact unit and guide unit are merged into a single integrated component structure. The guide unit incorporates both the restricting portion and allowing portion within one unified design, eliminating the need for separate components and reducing overall device complexity while maintaining the reliability function.
Solution Approach 2:
The guide unit serves multiple functions: it guides the mounting unit during insertion, restricts upward movement to prevent accidental detachment, and allows upward movement when intended. This multi-functionality reduces the need for additional specialized components, thereby reducing device complexity.
Data Source
AI summary
An accommodation device includes a housing in which a mounting port is open, a main body unit positioned in the housing, a mounting unit mounted in the housing, a coupling body coupled to the main body unit and the mounting unit, and a contact unit configured to contact the mounting unit, wherein the mounting unit is configured to move in one direction from an inside of the housing to an outside of the housing through the mounting port, and the contact unit contacts the mounting unit when the mounting unit mounted in the housing moves in the one direction.