Optical Scanning Device Lid Engagement for Dust-Proof Disassembly
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Solution Overview
Problem
Conventional optical scanning devices face challenges in maintaining dust-proofness while ensuring easy and efficient disassembly of the lid member from the housing, as the attachment mechanism often results in complex and cumbersome detachment processes.
Innovation Solution
The optical scanning device incorporates a housing with groove portions and suspended portions, allowing the lid member to be securely attached via engagement protrusions and holes, and a disassembly method using a jig to elastically deform the suspended portions, facilitating easy detachment without compromising dust-proofness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lid member is securely attached to the housing using conventional engagement mechanisms, then dust-proofness is improved, but the disassembly process becomes complex and cumbersome
Solution Approach 1:
The engagement mechanism is segmented into multiple independent suspension portions, each with its own engagement hole and protrusion features. This segmentation allows the lid member to be detached through sequential engagement release rather than requiring complex simultaneous manipulation, thus maintaining secure attachment while simplifying disassembly.
Solution Approach 2:
The patent introduces a specialized tool as an intermediary to facilitate the disassembly process. The tool engages with the engagement holes and protrusions to systematically release the suspension portions, transforming a complex manual disassembly task into a simplified tool-assisted operation while maintaining the integrity of the engagement mechanism.
2Ease of operation
If the attachment mechanism is simplified for easy disassembly, then ease of operation is improved, but secure attachment and dust-proofness may be compromised
Solution Approach 1:
The suspension portions are designed with elastic properties, allowing them to dynamically adapt during engagement and disengagement. The elastic deformation capability enables the portions to flex during tool-assisted removal while maintaining firm engagement during normal operation, thus achieving both ease of disassembly and secure attachment.
Solution Approach 2:
The engagement mechanism utilizes changes in physical parameters, specifically the elastic modulus and deformation characteristics of the suspension portions. By carefully controlling the material properties and geometric parameters of the suspension portions, the mechanism achieves optimal balance between attachment strength and disassembly ease.
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 ensures secure attachment for dust-proofing while enabling smooth and efficient disassembly of the lid member, maintaining the device's integrity and functionality.
Implementation Method 1
inserting the jig into a lateral space between the groove portion and the suspended portion to elastically deform the suspended portion in a direction away from the groove portion
Data Source
AI summary
An optical scanning device includes a scanning optical system, a housing, and a lid member. The housing includes a groove portion depressed inward from a laterally outer side of a side wall portion and that extends in an up-down direction, and a side-wall engagement portion disposed in the groove portion. The lid member includes a suspended portion hanging down from a peripheral portion thereof, and a suspended engagement portion disposed in the suspended portion. The groove portion penetrates the side wall portion in the up-down direction as seen from the up-down direction, and, in a state where the lid member is attached to the housing, the suspended portion is located in the groove portion as a result of being inserted into the groove portion from above, with the side-wall engagement portion in engagement with the suspended engagement portion in the up-down direction.