Pivotable Recording Apparatus Guide Pin Interference
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Solution Overview
Problem
In recording apparatuses, the engagement of guide pins and guide holes can lead to interference when the recording portion is pivoted relative to the support portion, compromising positioning accuracy during maintenance operations.
Innovation Solution
A recording apparatus with a pivotable second casing that includes a positioning mechanism with guide pins and guide holes, and a restricting mechanism that allows selective engagement or disengagement of the guide pins and guide holes, preventing interference and ensuring accurate positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the recording portion is pivoted relative to the support portion while the guide pin and guide hole are engaged, then positioning accuracy is maintained, but interference occurs between the guide pin and the wall defining the guide hole
Solution Approach 1:
The guide pin is made movable relative to the guide hole through engagement/disengagement control. The restricting mechanism allows the guide pin to be engaged with the guide hole when positioning is needed, and disengaged when pivoting is required, transforming a static interference problem into a dynamic solution where the same components serve different functions at different times
Solution Approach 2:
The guide pin is extracted from the guide hole during pivoting operations. The restricting mechanism enables temporary removal of the guide pin from its engaged position, allowing the recording portion to pivot without interference, then re-engaging it afterward to restore positioning accuracy
2Ease of operation
If the recording portion is made pivotable for maintenance operations, then user accessibility is improved, but positioning accuracy is compromised due to guide pin interference
Solution Approach 1:
The positioning mechanism is made dynamic through the restricting mechanism that controls guide pin engagement. During maintenance operations, the guide pin can be disengaged to allow pivoting, and then re-engaged to restore positioning accuracy, enabling both ease of operation and precision when needed
Solution Approach 2:
The restricting mechanism is activated in advance before pivoting to disengage the guide pin, preventing interference before it occurs. This preliminary action ensures that the guide pin is not in the way during maintenance operations, while being automatically re-engaged afterward to maintain positioning accuracy
Data Source
AI summary
A recording apparatus, including: a support portion; a recording portion; a first casing; a second casing; a positioning mechanism: a restricting mechanism configured to be selectively placed in one of: a restricted state in which a pivotal movement of the second housing is restricted; and a non-restricted state in which the pivotal movement of the second housing is not restricted, and an interlocking mechanism configured to move one of a guide pin and a guide hole in conjunction with the restricting mechanism, such that the guide pin and the guide hole are selectively placed at one of: an engaged state in which the guide pin and the guide hole engage each other when the restricting mechanism is in the restricted state; and a non-engaged state in which the guide pin and the guide hole do not engage when the restricting mechanism is in the non-restricted state.