Portable Device Housing With Hidden Screw-Column Locking Mechanism
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Solution Overview
Problem
Existing hook structures in portable electronic device housings are inadequate for maintaining a multi-dimensional locked state due to the trend towards thinner, lighter devices with narrow bezels, and reducing hook size compromises housing strength.
Innovation Solution
A housing structure with a hidden locking mechanism using screw columns on one housing surface and screws and holders on the opposing surface, allowing for assembly that creates inner surfaces, thus maintaining a simple exterior appearance while simplifying the locking process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If hook structures are used to maintain multi-dimensional locking state, then housing strength is improved, but device thickness increases
Solution Approach 1:
The patent transitions from traditional multi-dimensional hook structures to a planar screw-column assembly system. The screw columns are arranged on a first surface while corresponding receiving spaces are formed on a second surface, creating a two-dimensional assembly pattern that replaces three-dimensional hook buckling. This dimensional reduction allows the locking mechanism to function without requiring the thickness space needed for traditional hooks, thus resolving the contradiction between housing strength and device thickness.
Solution Approach 2:
The housing assembly is segmented into distinct functional components: screw columns on the first housing, receiving spaces in the second housing, and screws as fastening elements. This segmentation allows each component to be optimized independently - the screw columns provide structural anchoring points without requiring the bulk of traditional hooks, while the receiving spaces provide precise positioning. The distributed arrangement of multiple screw-column pairs across the housing surface creates cumulative locking strength without increasing individual component thickness.
2Length of moving object
If hook structures are reduced in size to maintain thin profile, then device thickness is reduced, but housing strength weakens
Solution Approach 1:
The screw-column assembly system serves multiple functions simultaneously: the screw columns provide structural support and anchoring, the receiving spaces provide precise positioning and alignment, and the screws provide secure fastening. This multi-functionality replaces the need for oversized hooks that would otherwise be required to provide both structural support and locking function in a single component. By distributing these functions across multiple specialized components, the system achieves adequate housing strength with minimized thickness.
Solution Approach 2:
The receiving spaces are pre-formed in the second housing with precise dimensions and positions that correspond to the screw columns on the first housing. This preliminary preparation ensures that when the housings are assembled, the screw columns align perfectly with the receiving spaces, allowing for secure fastening without requiring excessive thickness for alignment tolerances or adjustment mechanisms. The pre-configured geometry enables thin-profile construction while maintaining assembly precision and housing strength.
3Reliability
If traditional locking mechanisms are used, then housing assembly is secure, but assembly process becomes complex
Solution Approach 1:
The screw-column assembly system is designed to be self-aligning and self-explanatory. The screw columns protrude from the first housing at predetermined locations, and the receiving spaces are formed at corresponding locations on the second housing. When the housings are brought together, the geometry of the screw columns and receiving spaces automatically guides the assembly process, eliminating the need for complex alignment procedures or specialized tooling. The screws simply need to be inserted through the holders into the receiving spaces and tightened to the screw columns, providing reliable locking with minimal assembly complexity.
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 proposed housing structure effectively maintains a secure, multi-dimensional locked state without compromising the strength of the housing, while also simplifying the assembly and locking process and maintaining a clean exterior appearance.
Implementation Method 1
Each of the screws disposed in the receiving space protrudes out of the receiving member partially to be screwed to the corresponding screw column
Implementation Method 2
Each of the screws disposed in the receiving space protrudes out of the receiving member partially to be screwed to the corresponding screw column so as to assemble the first housing and the second housing together
Data Source
AI summary
A housing structure of portable electronic device including a first housing, a plurality of holders, a second housing, a plurality screw columns, and a plurality screws is provided. The holders are disposed on a first surface of the first housing respectively, and a receiving space is formed by each of the holders and the first housing. The screw columns are disposed on a second surface of the second housing to correspond to the receiving spaces respectively. Each of the screws disposed in the receiving space protrudes out of the receiving member partially to be screwed to the corresponding screw column so as to assemble the first housing and the second housing together to form an assembling body. The first and the second surfaces are inner surfaces of the assembling body.