Camera Module Adhesive Groove for Magnet Stability
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Solution Overview
Problem
Conventional camera modules face issues with magnet stability and removal due to external forces, such as shocks or drops, as the magnet can be dislodged from its housing, compromising the camera's functionality.
Innovation Solution
The camera module incorporates a rib with adhesive grooves to securely accommodate the magnet, enhancing adhesive strength and preventing magnet removal through the use of additional adhesive grooves and an inclined surface to absorb external forces, ensuring the magnet remains fixed even under impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the magnet is accommodated in the housing with a simple structure, then the manufacturing process is easy, but the magnet can be removed when external force is applied
Solution Approach 1:
The housing is segmented into multiple functional portions: a magnet accommodating portion for holding the magnet, a rib structure for additional support, and adhesive grooves for chemical bonding. This segmentation allows each portion to perform its specific function optimally while maintaining ease of manufacturing through modular design
Solution Approach 2:
The solution combines multiple fixation mechanisms: mechanical containment (housing structure), structural support (rib), and chemical bonding (adhesive). This composite approach integrates different material properties and fixation methods to achieve both ease of manufacture and high reliability in preventing magnet removal
2Device complexity
If the housing structure is simplified, then the device complexity is reduced, but the magnet removal prevention capability is insufficient
Solution Approach 1:
The housing structure is designed with preliminary anti-action features: the rib is positioned and shaped in advance to provide structural reinforcement, and adhesive grooves are pre-formed to receive adhesive before the magnet is installed. These features proactively prevent magnet removal before external forces are applied, rather than reacting to them
Solution Approach 2:
The solution adds dimensional complexity to the housing structure by introducing vertical ribs and multi-level adhesive grooves. This dimensional enhancement creates additional barriers against magnet removal in various directions (horizontal, vertical, diagonal) while maintaining the overall simplicity of the housing design
3Productivity
If adhesive is applied without adhesive grooves, then the manufacturing process is simpler, but the adhesive strength is insufficient to prevent magnet removal
Solution Approach 1:
The adhesive grooves are self-aligning features molded directly into the housing structure. During assembly, the adhesive naturally flows into these grooves without requiring precise manual positioning, and the grooves automatically contain the adhesive in the optimal location. This self-service design maintains high assembly efficiency while significantly improving adhesive strength
Solution Approach 2:
The adhesive grooves modify the physical parameters of the bonding interface by increasing the surface area for adhesive attachment, creating mechanical interlocking features, and controlling adhesive distribution. These parameter changes enhance the bonding strength from a simple surface application to a multi-dimensional mechanical-chemical bond
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 solution effectively stabilizes the magnet within the camera module, preventing removal during external impacts and enhancing the camera's operational stability and assembly efficiency.
Implementation Method 1
a first adhesive groove formed by a part of a lower surface of the rib being recessed to accommodate an adhesive
Data Source
AI summary
A camera module is provided, the camera module comprising: a bobbin; a coil arranged at the bobbin; a housing disposed at an inside of the bobbin; a magnet arranged at the housing, to face the bobbin; a rib formed at an inside to be extended from a first lateral wall of the housing to a second lateral wall adjacent to the first lateral wall; and a first adhesive groove formed by a part of a lower surface of the rib being recessed to accommodate an adhesive. The camera module has an advantageous effect in that the magnet may be prevented from being removed from the magnet accommodating portion of the housing, even when external force is applied to the camera module.