Camera Module Coupling Structure for Contamination Sealing
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Solution Overview
Problem
Existing camera modules are vulnerable to contamination by external foreign substances due to their sealed structure, which can compromise the integrity of internal components.
Innovation Solution
A camera module design featuring a first body with a protrusion and coupling groove, and a second body with a protrusion and coupling groove, along with adhesive members on the second protrusion's surface, including grooves or holes to enhance the coupling strength and prevent contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed structure is used to protect internal components from contamination, then reliability is improved, but device complexity increases
Solution Approach 1:
The housing is divided into multiple separate bodies (first body and second body) that are coupled together through protrusions and coupling grooves. This segmentation allows for a sealed structure that protects internal components while maintaining manageable complexity through modular assembly.
Solution Approach 2:
The coupling structure uses nested features where protrusions fit into coupling grooves, creating an interlocking sealed structure. The adhesive members are disposed within grooves on the protrusion surfaces, nesting the sealing function within the structural coupling features.
2Strength
If coupling grooves and protrusions are used to join bodies, then strength is improved, but manufacturing precision requirements increase
Solution Approach 1:
The coupling strength is enhanced by changing the parameters of the protrusion and groove geometry, and by introducing adhesive members that modify the bonding parameters. The adhesive members fill gaps and create chemical bonds, allowing for stronger coupling without requiring extremely tight mechanical tolerances.
Solution Approach 2:
The coupling structure combines mechanical features (protrusions and grooves) with chemical bonding (adhesive members) to create a composite joining system. This composite approach distributes the coupling function across multiple mechanisms, reducing the precision burden on any single feature while maintaining overall strength.
3Reliability
If adhesive members are added to the coupling structure, then reliability is improved, but device complexity increases
Solution Approach 1:
The adhesive members are merged with the coupling structure by disposing them within grooves on the protrusion surfaces. This integration combines the mechanical coupling function with the adhesive bonding function in a unified structure, enhancing reliability without adding separate complex components.
Solution Approach 2:
The protrusions and grooves serve multiple functions: they provide mechanical alignment and coupling, and they also serve as receptacles for adhesive members. This multi-functionality reduces the need for separate sealing or bonding features, maintaining simplicity while improving reliability.
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 ensures a firmer coupled state between the bodies, preventing contamination by external substances and maintaining the structural integrity of the camera module.
Implementation Method 1
adhesive members are disposed on an inner surface, an upper surface, and an outer surface of the second protrusion
Data Source
AI summary
This camera module comprises: a first body including a lens; a second body coupled to the first body; and a printed circuit board which is disposed in a space inside the first body and the second body and includes an image sensor. The first body includes: a first protrusion protruding downward from the lower surface; and a first coupling groove located inside the first protrusion. The second body includes: a second protrusion protruding upward from the upper surface and facing the first coupling groove; and a second coupling groove located outside the second protrusion and facing the first protrusion. Adhesive members are arranged on the inner surface, the upper surface, and the outer surface of the second protrusion, and the second protrusion has one or more grooves or holes for arranging the adhesive members.