Camera Module Lens Barrel Guide Groove and Elastic Member
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Solution Overview
Problem
Camera modules are prone to damage and noise due to external impacts, as the lens unit can easily collide with the housing, which existing structures fail to adequately mitigate.
Innovation Solution
A camera module structure featuring a lens barrel, an elastic member, and rolling members that reduce friction and absorb impacts, with the elastic member preventing separation and collision between the lens barrel and the housing, and the rolling members minimizing contact area and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the lens unit is allowed to move freely in the optical axis direction to achieve auto-focusing and optical image stabilization, then the focusing function is improved, but the lens unit becomes prone to collision with the housing due to external impacts
Solution Approach 1:
An elastic member is installed between the lens barrel and the housing to provide cushioning before collisions occur. The elastic member absorbs impact energy when external forces apply, preventing direct collision between the lens barrel and housing while allowing the lens unit to move freely for auto-focusing and optical image stabilization functions.
2Adaptability or versatility
If the lens barrel is allowed to move relative to the housing for focusing, then the focusing capability is improved, but friction and noise increase during movement
Solution Approach 1:
Rolling members are introduced as intermediary elements between the lens barrel and the housing. These rolling members reduce friction and noise during lens barrel movement by converting sliding friction into rolling friction, while still allowing the lens barrel to move freely for focusing operations.
3Reliability
If the lens barrel is firmly fixed to prevent collision, then impact resistance is improved, but the auto-focusing and optical image stabilization functions are compromised
Solution Approach 1:
The elastic member provides a cushioning mechanism that allows the lens barrel to move freely for auto-focusing while protecting it from collision damage. The elastic member deforms under impact to absorb energy, preventing direct contact between the lens barrel and housing without constraining the lens barrel's movement during normal focusing operations.
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 proposed structure effectively decreases damage and noise by absorbing impacts and preventing collisions, ensuring stable movement of the lens barrel and reducing the risk of separation from the housing.
Implementation Method 1
an elastic member preventing separation and collision between the lens barrel and the housing
Implementation Method 2
rolling members that reduce friction and absorb impacts
Data Source
AI summary
A camera module includes a housing having a guide groove formed therein, the guide groove being extended lengthwise in an optical axis direction, a lens barrel mounted in the housing and having a guide protrusion inserted into the guide groove, and an elastic member disposed on the guide groove so that the guide protrusion may be prevented from being separated from the guide groove.