Camera Module Locking Structure Using Magnetic Actuation
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Solution Overview
Problem
Current camera modules face challenges in assembling a robust locking structure that protects the camera module when not in use, due to limitations in thickness and inertia, which restricts the focusing range and image quality, especially with larger CMOS Image Sensors.
Innovation Solution
A locking structure for camera modules that includes a coil unit and a magnetic unit with a relative movement mechanism, utilizing a fixing part with sliding rails and an elastic component to securely lock the movable unit in place, allowing easy assembly and protection against external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a locking structure is added to protect the camera module when not in use, then protection reliability is improved, but assembly difficulty increases
Solution Approach 1:
The locking structure merges the protection function with the existing movable unit structure. The movable unit itself serves as the locking mechanism by utilizing its own components (coil unit, magnetic unit, elastic component) to provide both motion during operation and automatic locking during non-operation, eliminating the need for separate complex locking mechanisms.
Solution Approach 2:
The locking structure employs self-service through the elastic component that automatically returns the movable unit to the locked position when the coil unit is de-energized. The system uses its own stored elastic energy to perform the locking action without requiring external intervention or complex control mechanisms.
2Reliability
If the focusing range is increased to improve image quality, then image quality is improved, but the thickness of the mobile phone increases
Solution Approach 1:
The locking structure enables dynamic operation of the camera module, allowing the movable unit to freely move during operation for focusing and macro shooting functions. The dynamic locking mechanism only engages when the camera is not in use, providing full focusing range without permanent structural constraints that would increase thickness.
3Ease of manufacture
If a locking structure with sliding rails and elastic components is implemented, then ease of assembly is improved, but device complexity increases
Solution Approach 1:
The sliding rails serve multiple functions: they guide the movement of the movable unit during operation and provide the tracking mechanism for locking during non-operation. The elastic component simultaneously provides the unlocking force during operation and the locking force during non-operation, reducing the need for separate dedicated components.
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 locking structure simplifies assembly, ensures robust protection of the camera module, and enhances image quality by preventing damage from external impacts, while allowing for efficient movement and unlocking when the camera is in use.
Implementation Method 1
the coil is first given a current to cut a magnetic inductance line in a magnetic field to generate an electromagnetic force. The coil or the magnet may move under the action of the electromagnetic force
Implementation Method 2
an elastic component, one end of the elastic component is connected to the movable unit, the other end of the elastic component is pressed when the movable unit moves, so that the elastic component is in a compressed state
Data Source
AI summary
A locking structure for a camera module and a camera module. The locking structure comprises: a coil unit; and a magnetic unit, the magnetic unit being disposed opposite to the coil unit. When the coil unit is energized, the direction of the magnetic field generated by the coil unit interacts with the direction of the magnetic field of the magnetic unit so as to drive the relative movement of the coil unit and the magnetic unit. The locking structure having such a structure has a simple structure and is easy to assemble. Moreover, the performance of the locking structure can be independently tested and maintained, thereby ensuing that the locking structure has a high yield rate.