Side-Key Bracket Locking Structure for Stable Housing Fixation
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Solution Overview
Problem
The side key bracket in electronic devices is not stably fixed to the housing, leading to loose insertion, separation, and a deteriorated clicking feeling.
Innovation Solution
A fixing structure with a first locking protrusion and a locking hole or jaw is implemented to securely attach the key bracket to the housing, using a support structure to stabilize the key circuit board and prevent separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the key bracket is simply inserted into the seating recess without a fixing structure, then the assembly process is simple, but the key bracket becomes loose and may separate from the housing
Solution Approach 1:
The fixing structure is segmented into distinct components: a locking protrusion on the key bracket, a corresponding locking hole in the housing, and a support structure with seating recess. This segmentation allows each component to perform its specific function while maintaining overall assembly simplicity.
Solution Approach 2:
The locking protrusion and locking hole are pre-configured in specific positions and orientations during manufacturing. This preliminary action ensures that when the key bracket is inserted into the housing, the locking components automatically engage without requiring additional assembly steps, thus maintaining simplicity while ensuring reliable fixation.
2Ease of operation
If the key bracket is loosely inserted into the seating recess, then assembly is easier, but the clicking feeling of the side key deteriorates
Solution Approach 1:
The support structure provides localized support at critical positions: the seating recess supports the key bracket body, while the locking protrusion-hole connection provides localized anchoring. This localized quality enhancement ensures precise positioning and stable clicking sensation without complicating the overall assembly process.
3Reliability
If a fixing structure with locking protrusion and locking hole is implemented, then the key bracket is stably fixed to the housing, but the device complexity increases
Solution Approach 1:
The fixing structure merges multiple functions into integrated components: the locking protrusion serves both as a positioning element and a locking mechanism, while the support structure combines the seating recess and locking hole into a unified housing feature. This merging reduces the number of separate parts and simplifies the overall device complexity while maintaining reliable fixation.
Solution Approach 2:
The locking protrusion and locking hole are designed to automatically engage with each other when the key bracket is inserted into the housing. This self-service mechanism eliminates the need for additional fastening operations, tools, or complex assembly steps, thereby reducing device complexity while ensuring stable fixation.
4Ease of operation
If the key bracket is separated from the seating recess, then assembly/disassembly becomes easier, but the side key pressing function is compromised
Solution Approach 1:
The fixing structure provides dynamic characteristics: it allows controlled movement during assembly and operation while preventing unwanted separation. The locking mechanism maintains stable connection during normal use but permits deliberate disassembly when needed, balancing operational reliability with ease of maintenance.
Data Source
AI summary
An electronic device according to an embodiment includes a housing having a key-hole formed therein, a key coupled to the housing so as to be at least partially disposed in the key-hole, a key circuit board that is disposed inside the housing and that includes a switch, the switch being disposed on one surface of the key circuit board and pressed by the key, a key bracket that supports the key circuit board such that at least a portion of the key circuit board faces the key, a support structure formed in the housing to support the key bracket and a fixing structure that fixes the key bracket to the housing. The fixing structure includes a first locking protrusion disposed in one of the housing and the key bracket and one of a locking hole and a locking jaw disposed in the other one of the housing and the key bracket so as to be fastened with the first locking protrusion.