Electronic Housing Snap-Fit Sealing for Stable Waterproof Assembly
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Solution Overview
Problem
Existing housings for electronic devices face challenges in maintaining a stable waterproof function due to variations in assembly pressure and rotation, requiring precise control to ensure sealing, which can be inconsistent across users.
Innovation Solution
A housing design featuring an upper and lower case with a gasket and elastically deformable cantilevers with hooks that engage with engagement holes, ensuring a watertight seal before complete assembly, eliminating the need for precise pressure control and separate means to achieve waterproofing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rubber gasket is provided between the upper case and the lower case to achieve waterproofing, then the waterproof function is improved, but the assembly complexity and precision requirements increase due to the need for precise pressure control
Solution Approach 1:
The cantilever structure automatically applies the necessary pressure to compress the gasket during assembly. When the upper case is placed on the lower case, the cantilever's elastic deformation naturally generates the sealing force, eliminating the need for external tools or precise manual pressure control. The structure serves itself to achieve both assembly ease and waterproof sealing.
Solution Approach 2:
The cantilever's elastic properties allow it to deform and generate variable pressure during assembly. As the upper case is positioned, the cantilever transitions from a deformed state to an engaged state, dynamically adjusting the pressure applied to the gasket to ensure optimal sealing without requiring precise external control.
2Strength
If screwing or press-fitting methods are used to assemble the upper and lower cases, then the structural strength is improved, but the waterproof stability deteriorates due to variations in assembly pressure and rotation
Solution Approach 1:
The cantilever structure introduces dynamic elasticity to the assembly process. Rather than relying on static, fixed-pressure methods like screwing or press-fitting, the cantilever dynamically adapts its pressure application during assembly, ensuring consistent gasket compression and waterproof sealing regardless of assembly variations.
Solution Approach 2:
The cantilever acts as an intermediary mechanism between the upper and lower cases. It mediates the connection by providing a controlled, elastic pressure application to the gasket, ensuring stable waterproofing while the primary structural connection is established through the case engagement.
3Reliability
If precise pressure control is required during assembly to maintain waterproofing, then the waterproof function is improved, but the ease of operation deteriorates due to the need for special tools and precise user actions
Solution Approach 1:
The assembly structure performs the pressure control function automatically through the cantilever's elastic properties. The user simply needs to place the upper case on the lower case, and the cantilever self-regulates the pressure applied to the gasket, eliminating the need for special tools or precise user actions while maintaining reliable waterproofing.
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 design allows for easy assembly with a perceived click feeling, ensuring a complete waterproof seal without requiring additional tools or precise pressure application, thereby stabilizing the waterproof function.
Implementation Method 1
a gasket arranged between the upper case and the lower case
Implementation Method 2
an elastically deformable cantilever, having a hook, which is formed on one of the upper case and the lower case
Data Source
AI summary
A housing for housing an electronic device according to an aspect of the present disclosure includes an upper case and a lower case which are formed so as to mate with each other, a gasket arranged between the upper case and the lower case, an elastically deformable cantilever which is formed on one of the upper case and the lower case and which has a hook, and an engagement portion formed on the other of the upper case and the lower case, wherein when an operation to mate the upper case and the lower case is performed, before the cantilever is completely engaged with the engagement portion, a gap between the upper case and the lower case is sealed by the gasket.