Portable Electronic Device Cover Radial Attachment Mechanism
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Solution Overview
Problem
Conventional portable electronic devices with a receiving space for a portable recording medium require complex manufacturing processes due to the need to fit a pivot portion into a holding portion, which reduces workability and manufacturing efficiency.
Innovation Solution
A portable electronic device design featuring a pivot portion and a holding portion that allow radial movement, combined with an engaging member that can move between locked and unlocked positions to facilitate easy attachment and detachment of the cover, improving workability and preventing separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pivot portion is fitted into a holding portion by bending a member, then the cover can be supported for opening and closing, but the workability and manufacturing efficiency are reduced
Solution Approach 1:
The holding portion is designed with a shape that allows preliminary radial movement of the pivot portion before final engagement. This preliminary action enables the pivot portion to be positioned and fitted into the holding portion without requiring bending operations during assembly, thereby improving manufacturing workability while ensuring the cover support function is achieved
2Ease of manufacture
If the cover is made detachable in the radial direction, then the manufacturing workability is improved, but the cover may accidentally separate from the device main body
Solution Approach 1:
The engaging member is designed to dynamically change its engagement state with the stopper. During normal operation, the engaging member maintains engagement to prevent accidental separation. During manufacturing or maintenance, the engaging member can be deliberately disengaged to allow radial detachment of the cover, thus providing both security and workability
3Reliability
If an engaging member is added to lock the cover, then the attachment security is improved, but the device complexity increases
Solution Approach 1:
The engaging member acts as an intermediary element between the pivot portion and the stopper. This simple mechanical intermediary provides the locking function by engaging with the stopper to prevent accidental separation, while adding minimal structural complexity to the overall device
Data Source
AI summary
A holding portion 12 has a shape which allows relative movement between a pivot portion 21 and the holding portion 12 in the radial direction of the pivot portion 21 such that cover 20 is attachable to, and removable from, a cabinet 11 in the radial direction of the pivot portion 21. An engaging member 50 is movable between a locked position and a unlocked position. At the locked position, the engaging member 50 engages with the cabinet 11 so as to restrict the relative movement between the pivot portion 21 and the holding portion 12. At the unlocked position, the engaging member 50 releases the engagement between the engaging member 50 and the cabinet 11. A stopper 13 restricts the movement of the engaging member 50 from the locked position to the unlocked position.