Electronic Apparatus Chassis With Tool-Free Screw Release
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Solution Overview
Problem
Existing electronic apparatus chassis designs require specialized tools and are difficult to disassemble due to complex engagement mechanisms, leading to low work efficiency during maintenance or component replacement.
Innovation Solution
A chassis design featuring screws with non-screw portions and falling prevention screws, along with engagement pieces and receiving portions, allows for easy detachment of chassis members without the need for specialized tools by creating a gap for manual lifting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If chassis members are connected by screws and hook-shaped engagement pieces, then connection strength is improved, but disassembly complexity increases requiring specialized tools and precise positioning
Solution Approach 1:
The engagement piece is designed to automatically engage with the receiving portion when the chassis members are brought together, eliminating the need for specialized tools or precise manual positioning. The structure self-aligns and self-secures through the interaction between the engagement piece protrusion and receiving portion recess, allowing users to simply press the members together for automatic connection.
Solution Approach 2:
The connection mechanism is divided into separate functional elements: the engagement piece with its protrusion on one chassis member and the corresponding receiving portion on the other. This segmentation allows each element to perform its specific function independently, with the protrusion inserting into the recess to create the connection, simplifying the overall disassembly process.
2Reliability
If multiple screws are used to fasten chassis members, then connection reliability is improved, but disassembly time increases requiring systematic loosening of all fasteners
Solution Approach 1:
The engagement piece combines multiple fastening functions into a single integrated structure that simultaneously provides mechanical connection and positioning. By merging the functions of alignment, connection, and securing into one element, the design eliminates the need to systematically loosen multiple separate screws, significantly reducing disassembly time while maintaining reliable connection.
Solution Approach 2:
The engagement mechanism allows for dynamic adjustment during assembly and disassembly. The engagement piece can be selectively engaged or disengaged from the receiving portion based on operational needs, enabling quick connection and release without requiring systematic manipulation of multiple fasteners, thus reducing disassembly time while maintaining reliability.
3Manufacturing precision
If engagement pieces require precise positioning, then connection precision is improved, but operational difficulty increases due to uncertainty about insertion positions
Solution Approach 1:
The engagement piece and receiving portion are designed with complementary geometries that guide the chassis members into proper alignment automatically. The protrusion and recess are positioned such that when the members are brought together, the engagement features naturally align at the correct position, eliminating uncertainty about insertion locations while maintaining precise connection without requiring manual positioning skills.
Data Source
AI summary
An electronic apparatus chassis includes a first chassis member, a second chassis member, and screws that fasten the chassis members to each other. In addition, the electronic apparatus chassis includes an engagement piece and a receiving portion that connect each of edge portions of the first chassis member to the second chassis member. In the electronic apparatus chassis, the first chassis member and the second chassis member are configured such that the relative positions thereof are not substantially changed when the screw is loosened and removed from the screw hole, and a relative movement thereof is provided in a direction away from each other when the screw is loosened and removed from the screw hole.