Lens Actuator Coil Spring Mechanical Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing lens actuators face reliability issues with electric connections between springs and coils due to low adhesion reliability and complex connection structures, making production difficult.
Innovation Solution
A lens actuator design featuring a housing with a magnet, a lens holder, a spring, and a coil, where the spring is elastically deformed to press down the coil's lead line, and assembly holes and protrusions ensure secure and simplified connections, eliminating the need for welding or adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If welding or conductive adhesive is used to couple the coil and spring, then electric connection is achieved, but adhesion reliability is low and production becomes difficult
Solution Approach 1:
The patent replaces the chemical bonding method (welding or conductive adhesive) with a mechanical pressing method. The spring's elastic deformation provides mechanical pressure to maintain electrical contact between the lead line and the spring, eliminating the need for welding or adhesion and thereby improving both reliability and ease of manufacture.
Solution Approach 2:
The lead line acts as an intermediary element between the coil and the spring. By pressing the lead line against the spring through elastic deformation, electrical connection is achieved without directly coupling the coil and spring, simplifying the connection structure and improving manufacturability.
2Reliability
If welding or conductive adhesive is used to couple the coil and spring, then electric connection is achieved, but the connection structure becomes complicated
Solution Approach 1:
The patent replaces complex chemical bonding processes (welding or adhesive application) with a simple mechanical pressing mechanism. The elastic deformation of the spring automatically provides the necessary contact pressure, simplifying the connection structure while maintaining reliable electrical connection.
Solution Approach 2:
The patent extracts the complex coupling process (welding or adhesive application) from the connection structure. By using the lead line as an intermediate pressing element, the direct coupling between coil and spring is eliminated, thereby simplifying the overall connection structure.
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
This design provides a reliable and durable electric connection between the spring and coil, simplifying the connection structure and enhancing manufacturing ease while maintaining durability against environmental factors like humidity and mechanical shocks.
Implementation Method 1
a spring coupled to the lens holder and supported by the housing to elastically support the lens holder
Implementation Method 2
a coil coupled to the lens holder in such a way that the coil faces the magnet
Data Source
AI summary
Disclosed are a lens actuator and a camera module having the lens actuator. The lens actuator, which includes: a housing; a magnet installed in the housing; a lens holder supporting a lens and installed to ascend and descend in the housing; a spring coupled to the lens holder and supported by the housing to elastically support the lens holder; and a coil coupled to the lens holder in such a way that the coil faces the magnet, a lead line of the coil being interposed between the lens holder and the spring, forms an electric connection structure between the coil and the spring that durable against shocks and humidity, improving the reliability of electric connection, and simplifies the connection structure between the spring and the coil, making it easier to manufacture the lens actuator.