Lens Moving Assembly With Segmented Adhesive Inlets
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Solution Overview
Problem
The assembly of camera modules in small-sized electronic devices faces challenges with adhesive application for coupling magnets to housings, leading to non-uniform adhesion, adhesive flow, and contamination, which can cause malfunction and defects in lens movement apparatuses.
Innovation Solution
A lens moving apparatus with a bobbin, coil, magnet, and housing structure that includes adhesive inlets and flow restrictors for controlled adhesive application, ensuring firm coupling and sealing of components while preventing contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive is applied to couple magnet to housing, then magnet and housing are bonded together, but adhesive may not uniformly spread or may flow down causing defective adhesion
Solution Approach 1:
The magnet mounting seat is divided into multiple adhesive application areas, with each area receiving adhesive through separate adhesive inlets. This segmentation allows controlled adhesive distribution across the mounting seat surface, preventing both insufficient adhesive in any single area and excessive adhesive causing flow defects.
Solution Approach 2:
Adhesive inlets act as intermediary structures that mediate between the adhesive source and the magnet mounting seat. These inlets control adhesive flow and distribution, ensuring uniform adhesive application without direct manual application, thereby eliminating the problem of non-uniform spreading.
2Object-affected harmful factors
If adhesive is applied to seal gaps between components, then contaminants are prevented from infiltrating, but adhesive may flow down and cure at unintended areas causing malfunction
Solution Approach 1:
Multiple adhesive inlets are provided at different locations on the housing, allowing adhesive to be applied to specific gap areas between components. This segmented approach enables precise sealing at intended locations while preventing adhesive from flowing to unintended areas where it could cause malfunction.
3Ease of manufacture
If adhesive application is performed manually, then adhesive can be applied to couple components, but it is difficult to accurately control quantity and uniformity of adhesive
Solution Approach 1:
The adhesive inlets are designed to automatically control adhesive flow and distribution based on the structure and configuration of the inlets themselves. The system self-regulates adhesive quantity and uniformity without requiring skilled manual application, making the process both simple and precise.
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
Enhances bonding force and efficiency in assembling camera modules, reducing defects and malfunctions by ensuring uniform adhesive application and preventing adhesive flow, thus improving autofocusing and handshake correction functions.
Implementation Method 1
a first adhesive inlet, which allows a side portion of the first magnet mounting seat to communicate with an outside surface of the housing
Implementation Method 2
the magnet may be coupled to a housing by means of an adhesive or the like
Data Source
AI summary
A lens moving apparatus includes a bobbin on which a first coil is disposed, a first magnet disposed around the bobbin to face the first coil, and a housing, which is disposed to surround at least a portion of the bobbin and has a first magnet mounting seat, which receives the first magnet, wherein the housing is provided with an adhesive inlet, which allows a side portion of the first magnet mounting seat to communicate with an outside surface of the housing.