Screwless Electronic Device Mounting Using Interference Fit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing mounting structures for electronic devices into housings require fastening members like screws, which increase man-hours and inefficiency due to the need for pre-attachment before mounting.
Innovation Solution
A structure utilizing first and second supporting members with convex portions and protrusions that fit into gaps between a substrate and storage devices, allowing the electronic device to be inserted and fixed within the housing without screws, using the housing and cover for securement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fastening member such as a screw is used to mount the electronic device into the housing, then the electronic device can be securely fixed, but the assembly process requires pre-attachment of fastening members which increases man-hours and reduces productivity
Solution Approach 1:
The invention extracts and eliminates the fastening member (screw) from the mounting structure by integrating the fixation function directly into the housing and cover components. The cover is designed with positioning protrusions that fit into corresponding recesses in the housing, and the electronic device is retained by the interference fit between the device housing and the cover, removing the need for separate fastening elements entirely.
Solution Approach 2:
The invention merges the fixation function with the structural components of the housing and cover. The positioning protrusions and recesses are integrated into the housing and cover designs, and the retention mechanism is combined with the cover's sealing and protective functions, creating a multi-functional integrated structure that eliminates separate fastening members.
2Reliability
If a fastening member such as a screw is used to mount the electronic device into the housing, then the electronic device can be securely fixed, but the assembly process becomes more complex and time-consuming
Solution Approach 1:
The positioning protrusions and recesses are pre-formed during the molding of the housing and cover components. The interference fit dimensions and geometric features are built into the parts themselves during manufacturing, so that during assembly, the electronic device can be directly inserted and fixed without any additional steps for attaching fastening members.
3Stability of the object's composition
If supporting members are mounted by fitting convex portions into gaps between storage devices and substrate, then the electronic device can be securely positioned, but the manufacturing precision requirements increase
Solution Approach 1:
The convex portions are designed with specific local geometric features including rounded corners and controlled dimensions that allow them to fit into the gaps between storage devices and substrate. The local quality of the convex portion geometry (rounded corners, specific height and width) enables reliable positioning while accommodating normal manufacturing tolerances of the storage devices and substrate.
Data Source
AI summary
In a structure of mounting an electronic device into a housing according to the present invention, the electronic device has the following structure. First and second storage devices are connected to respective connecting parts provided on a substrate. Convex portions provided on a first supporting member are fitted from above into a gap between the first storage device and the substrate and a gap between the second storage device and the substrate, respectively. Convex portions provided on a second supporting member are fitted from below into the gap between the first storage device and the substrate and the gap between the second storage device and the substrate, respectively. The electronic device into which the first and second supporting members are fitted is inserted into the housing from an opening thereof, and fixed within the housing by the housing and a cover.