Multi-directional Input Device Snap-fit Switch Mounting
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Solution Overview
Problem
The installation process of the pressing switch in multi-directional input devices is complex due to the need for screw alignment and insertion, reducing installation efficiency.
Innovation Solution
A design where the pressing switch is fixed using inclined protrusions on the switch and base, allowing for simple snapping engagement during installation, ensuring uniform stress and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the pressing switch is fixed using multiple screws, then the pressing switch is securely fixed to the base, but the installation process becomes complex and time-consuming due to screw alignment requirements
Solution Approach 1:
The patent extracts the screw fastening mechanism and replaces it with a snap-fit structure using protrusions and grooves. The pressing switch body is provided with protrusions that engage with corresponding grooves on the base, eliminating the need for screws and significantly simplifying the installation process while maintaining secure fixation.
Solution Approach 2:
The patent replaces the mechanical screw-threaded hole fastening system with a snap-fit mechanical engagement system. The protrusions on the pressing switch body engage with grooves on the base through elastic deformation and geometric interlocking, providing a tool-free installation method that improves productivity while ensuring reliable fixation.
2Strength
If the pressing switch is fixed using multiple screws, then the pressing switch can be securely mounted, but the installation process requires precise alignment and multiple steps
Solution Approach 1:
The patent implements a self-aligning snap-fit mechanism where the protrusions on the pressing switch body automatically engage with the grooves on the base during installation. The elastic deformation of the protrusions allows for self-correction of minor misalignments, eliminating the need for precise manual alignment and reducing installation complexity while maintaining strong fixation.
Solution Approach 2:
The patent utilizes elastic deformation as a key parameter change mechanism. The protrusions are designed with elastic properties that allow them to deform during insertion and then spring back to lock into the grooves, providing both ease of installation and strong fixation strength without complex alignment requirements.
Data Source
AI summary
Disclosed is a multi-directional input device, including a pressing switch. Each of two opposite side surfaces of the pressing switch is provided with a first protrusion. The base includes two base side surfaces respectively opposite to the two opposite side surfaces of the pressing switch. Each of the two opposite base side surfaces is provided with a second protrusion respectively, and the second protrusion is engaged with the first protrusion to fix the pressing switch.