Lens Spring Stabilizer Structure for Vibration and Anti-Drop Control
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Solution Overview
Problem
Existing compact mobile devices suffer from image blurs and drifts due to external vibrations, particularly in intense vibrations or low-light scenarios, and existing stabilizer techniques face issues with nonlinear frictional forces and poor anti-drop ability.
Innovation Solution
A spring stabilizer system with specific geometric configurations and elastic connecting arms is used to connect fixed and movable portions, allowing multi-axis degrees-of-freedom while compensating for varying spring constants and reducing roll-axis spring constants, and incorporating stabilizing and focusing structures for lens stabilization and focusing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional springs are used in the stabilizer system, then the structure is simple, but the anti-drop ability is poor and the system suffers from external forces easily
Solution Approach 1:
The patent employs composite elastic connecting arms made of materials with different elastic moduli arranged in parallel. This composite structure provides enhanced anti-drop ability and resistance to external forces while maintaining structural integrity, resolving the contradiction between reliability and structural simplicity.
Solution Approach 2:
The elastic connecting arm is divided into multiple segments with different elastic moduli (first elastic connecting arm with first elastic modulus, second elastic connecting arm with second elastic modulus). This segmentation allows each segment to contribute differently to the overall mechanical properties, improving anti-drop performance without excessive complexity.
2Reliability
If a ball connection is used between fixed and movable assemblies, then the structure is simple, but nonlinear frictional forces affect stabilization performance
Solution Approach 1:
The patent removes the ball connection component entirely from the system. Instead of using a ball joint, the design directly connects the movable assembly to the fixed assembly through elastic connecting arms, eliminating the source of nonlinear frictional forces and improving stabilization performance.
Solution Approach 2:
The mechanical ball connection is replaced with an elastic connection system. The elastic connecting arms provide the necessary mechanical linkage while eliminating the frictional issues associated with ball joints, substituting a friction-based mechanical connection with an elastic deformation-based connection.
3Reliability
If the spring constant is increased to improve stabilization, then the stabilization effect improves, but the power consumption increases and the system becomes less adaptable to different directions
Solution Approach 1:
The patent applies different elastic moduli to different parts of the connecting structure. The first elastic connecting arm has a different elastic modulus than the second elastic connecting arm, allowing each segment to provide appropriate stiffness for its specific directional requirements. This local differentiation enables the system to maintain high stabilization effect while adapting to forces from different directions without requiring uniformly high spring constants.
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 system achieves improved stabilization and anti-drop ability, reduces production complexity and cost, and conserves power, while effectively utilizing limited space with a simpler structure.
Implementation Method 1
an elastic connecting arm; a ratio of a length of a vertical midline of the elastic connecting arm to a maximum distance from an edge of the elastic connecting arm to the vertical midline is greater than 5:1
Implementation Method 2
at least two stabilizing springs... configured to support the movable assembly and form a suspension system
Data Source
AI summary
Disclosed are a spring stabilizer system and a lens stabilizing-focusing device using the system. The spring stabilizer system includes at least two stabilizing springs, where the stabilizing springs each include a fixed portion, an elastic connecting arm, and a movable arm; a first connecting groove is formed in the fixed portion; one end of the elastic connecting arm is connected to the first connecting groove; a ratio of a length of a vertical midline of the elastic connecting arm to a maximum distance from an edge of the elastic connecting arm to the vertical midline is greater than 5:1; a ratio of a width of the elastic connecting arm to a thickness of the elastic connecting arm is not less than 2:1; a second connecting groove is formed in the movable portion; and the second connecting groove is connected to the other end of the elastic connecting arm.