Lens Driving Motor Spring Layout for Easier Coil Lead Soldering
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Solution Overview
Problem
The existing lens driving motors face challenges in assembling the lead lines of the coil due to their small size and complex structure, leading to reduced workability and reliability issues with soldering and friction, which affects the stability and longevity of the product.
Innovation Solution
The design incorporates a lens driving motor with a base, housing, yoke, carrier, coil, and elastic members, where the lead lines of the coil are connected to separate springs with different polarities, allowing for easier soldering and stable power connection, reducing friction and improving assembly convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the lead lines of the coil are soldered to the upper and lower springs in the related art lens driving motor, then the coil can receive external power, but the soldering operation becomes difficult due to the narrow space and complex yoke structure
Solution Approach 1:
The patent divides the single spring structure into separate upper and lower springs, allowing the lead lines to be soldered to each spring independently at more accessible locations, thus improving soldering workability while maintaining reliable power connection
Solution Approach 2:
The patent introduces a cap as an intermediary component that facilitates the soldering process by providing a more accessible working space and better positioning for the lead lines and springs, making the soldering operation easier to perform
2Reliability
If the lead line of the coil is inserted into the gap between the yoke and carrier and then soldered at the upper spring, then power can be transmitted, but the process becomes more difficult due to the bent yoke shape and narrow space
Solution Approach 1:
The patent separates the spring components and repositions them to allow lead line connection without requiring insertion into narrow gaps, simplifying the assembly process while maintaining stable power transmission
Solution Approach 2:
The patent allows the lead lines to be soldered to the springs before final assembly, eliminating the need to perform soldering operations in difficult-to-reach gaps between the yoke and carrier
3Reliability
If one end of the lead line is connected to the coil and moves together with the coil while the other end is fixed to the yoke that moves independently, then the circuit is complete, but friction and external load cause deterioration of the lead line
Solution Approach 1:
The patent introduces flexible springs as intermediary components between the stationary yoke and the moving coil, allowing the lead lines to remain relatively fixed while accommodating the motion of the coil through the elastic deformation of the springs, thereby reducing friction and wear on the lead lines
Solution Approach 2:
The patent makes the spring components flexible and elastic rather than rigid, allowing them to dynamically adapt to the motion of the coil while keeping the lead line connection points relatively stable, reducing stress and friction on the lead lines
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 simplifies the assembly process, enhances the reliability of the power connection, and extends the product's lifespan by stabilizing the coil and power source connection, improving operational reliability.
Implementation Method 1
the carrier and the lens move in an upward direction using electromagnetic force generated between the coil and the magnet when a current flows through the coil
Implementation Method 2
a first elastic member whose one end is coupled to at least one side of the carrier to provide elastic force to the carrier
Data Source
AI summary
Provided are a lens driving motor and an elastic member of the lens driving motor. The elastic member of a lens driving motor, the elastic member includes a first spring and a second spring. The second spring is different from the first spring and disposed together with the first spring on one side of a carrier to support the carrier. A first lead line of a coil and a first external power source are connected to the first spring, and a second lead line of the coil and a second external power source are connected to the second spring to supply power to the coil. Since the carrier can be assembled to other part after a (+) lead line and a (−) lead line of the coil are connected to the first and second springs, respectively, using solder, a process is simple and convenient.