Lens Driving Module Adhesive Anchoring for Compact Stability
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Solution Overview
Problem
Conventional lens driving modules face challenges with stability and size due to inadequate adhesive connections between the base and housing, leading to potential separation under impact and increased size from adhesive grooves.
Innovation Solution
A lens driving module design featuring a base, housing, intermediate material, and anchoring members with angled clamping surfaces, where the intermediate material connects the base to the housing through angled through holes, enhancing bonding strength and structural stability while minimizing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive is used to connect the base to the housing, then the connection is simple to implement, but the bonding strength is insufficient and the base is easily separated under impact
Solution Approach 1:
The base is divided into a main body and a protrusion that extends into the housing, creating separate functional zones. The protrusion acts as an independent anchoring element that segments the connection function from the main base structure, providing mechanical interlocking while maintaining manufacturing simplicity.
Solution Approach 2:
The protrusion from the base is nested within the housing, with the housing forming a recess that receives and accommodates the protrusion. This nesting creates a mechanical interlock where the protrusion is surrounded by the housing walls, significantly enhancing bonding strength without complicating the manufacturing process.
2Strength
If a groove is formed on the base to receive adhesive, then the adhesive connection is improved, but the size of the base is increased due to the groove thickness
Solution Approach 1:
Instead of creating a groove that increases thickness in one dimension, the solution extends a protrusion in a different dimension (perpendicular to the base surface) that fits into the housing. This dimensional shift allows the base to maintain its original thickness while still providing enhanced adhesive connection through the extended protrusion structure.
Solution Approach 2:
The protrusion acts as an intermediary element between the base and housing, providing a dedicated surface for adhesive application and mechanical interlocking. This intermediary structure eliminates the need for grooves in the base, maintaining base thickness while improving connection strength through the protrusion-housing interface.
3Stability of the object's composition
If the base and housing are connected with sufficient bonding strength, then structural stability is improved, but the device size increases due to larger connection features
Solution Approach 1:
Instead of increasing the overall size of the base or housing, the solution concentrates the bonding strength enhancement at a specific local location where the protrusion extends into the housing. This localized quality improvement provides strong mechanical interlocking and adhesive bonding without increasing the overall device volume, as the protrusion is a focused feature rather than a bulk addition.
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 provides a stable and compact lens driving module with improved bonding force between the base and housing, preventing separation under impact and allowing for a thinner profile, thus meeting the requirements of small size and high structural strength.
Implementation Method 1
an intermediate material, configured to connect the base to the housing
Data Source
AI summary
An optical element driving mechanism is provided. The optical element driving mechanism includes a movable portion for holding an optical element, a fixed portion, a driving assembly used for driving the movable portion to move relative to the fixed portion, and an adhesive element. The movable portion is movable relative to the fixed portion, and the fixed portion includes a case and a bottom affixed on the case. The case has a top wall and a side wall. The top wall is plate-shaped and is perpendicular to a main axis, and the side wall is not parallel to the top wall. An accommodating space for accommodating the movable portion is formed between the case and the bottom. The adhesive element is in direct contact with the bottom, the case, and the driving assembly.