Magnetic Iris Drive Motor for Adjustable Camera Apertures
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Solution Overview
Problem
The aperture of a camera module in electronic devices cannot be changed, leading to a poor photographing effect.
Innovation Solution
A variable aperture drive motor is introduced, comprising a base assembly, a lens support body, driving magnets and coils, a blade set, and magnetic attraction plates, which allow the lens support body to rotate relative to the base assembly, enabling the aperture to be adjusted, and magnetic attraction plates ensure stability during inversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed aperture structure is used in the camera module, then the structure is simple and stable, but the photographing effect is poor due to inability to adjust aperture
Solution Approach 1:
The patent replaces traditional mechanical drive mechanisms (gears, linkages) with a magnetic drive system. The motor assembly uses magnetic attraction between the lens support body and base assembly to achieve aperture adjustment, eliminating complex mechanical transmission components while maintaining reliable actuation.
Solution Approach 2:
The patent changes the physical state and positioning parameters of the lens support body through magnetic forces. By controlling the magnetic attraction strength and direction, the system adjusts the aperture opening size without mechanical contact, achieving variable aperture functionality through parameter control rather than mechanical reconfiguration.
2Adaptability or versatility
If the lens support body is made movable to enable aperture adjustment, then aperture variability is achieved, but the lens support body may move due to its own weight causing instability
Solution Approach 1:
The patent applies magnetic attraction force as a counteracting force to balance the gravitational weight of the lens support body. The magnetic force acts in the opposite direction to gravity, preventing the lens support body from moving downward due to its own weight, thereby maintaining stable positioning during aperture adjustment.
Solution Approach 2:
The patent replaces mechanical support and positioning mechanisms with magnetic field-based positioning. The magnetic attraction between the lens support body and base assembly provides both the driving force for aperture adjustment and the stabilizing force to counteract gravity, eliminating the need for mechanical support structures.
3Reliability
If traditional mechanical drive mechanisms are used, then the structure is straightforward, but friction is high affecting precision and reliability
Solution Approach 1:
The patent replaces mechanical drive mechanisms with a magnetic drive system. The motor assembly uses magnetic attraction forces to actuate the aperture blades, eliminating mechanical contact between moving parts. This substitution removes friction entirely from the drive mechanism while adding magnetic field interaction, improving reliability and reducing wear.
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 variable aperture drive motor effectively adjusts the aperture of the camera module, improving the photographing effect by ensuring stability and reducing friction, preventing the lens support body from moving due to its weight and maintaining optical axis accuracy.
Implementation Method 1
driving magnets and driving coils are relatively induced so that the lens support body rotates relative to the base assembly
Implementation Method 2
first magnetic attraction plates, wherein there are a plurality of first magnetic attraction plates, and the first magnetic attraction plates are provided on a bottom end of the base assembly corresponding to the driving magnets
Data Source
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AI summary
The present invention provides a variable aperture drive motor, a camera apparatus, and an electronic device. A variable aperture drive motor, includes: a base assembly, the base assembly being provided with an accommodating cavity; a lens support body, at least a part of the lens support body being movably provided inside the accommodating cavity; driving magnets, wherein there are a plurality of driving magnets, and the driving magnets are provided on a circumferential side wall of the lens support body; driving coils, wherein there are a plurality of driving coils, the driving coils are provided on a side wall of the base assembly corresponding to the driving magnets, and the driving magnets and the driving coils are relatively induced so that the lens support body rotates relative to the base assembly; a blade set, a first end of the blade set being provided on a top end of the base assembly, and a second end of the blade set being connected to the lens support body; and first magnetic attraction plates, wherein there are a plurality of first magnetic attraction plates, and the first magnetic attraction plates are provided on a bottom end of the base assembly corresponding to the driving magnets. The present invention solves the problem that an aperture of a camera module of an electronic device can not be changed in the prior art.