Variable Aperture Roller Mechanism for Camera Module Friction Reduction
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Solution Overview
Problem
Existing variable aperture mechanisms in camera modules suffer from instability and increased friction due to the use of balls to connect rotating and fixed components, which affects the precision and durability of aperture adjustments.
Innovation Solution
A variable aperture design featuring a roller in rollable connection with a base and a rotation bracket, along with blades that are rotatably connected to the base and slidably connected to the rotation bracket, to form an aperture hole with adjustable size, thereby reducing friction and enhancing stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If balls are used to connect rotating and fixed components in the variable aperture mechanism, then the structure can be assembled, but the friction increases and stability decreases
Solution Approach 1:
The patent replaces the ball-based mechanical connection system with a roller-based system. The roller is positioned between the base and rotation bracket, and its rotational movement substitutes for the ball-based connection, reducing friction and improving stability during aperture adjustment operations.
Solution Approach 2:
The roller acts as an intermediary element between the base and rotation bracket. It mediates the interaction between these two components by providing a rolling contact interface, which reduces direct friction and enhances the stability of the aperture adjustment mechanism.
2Reliability
If the roller is added between the base and rotation bracket, then friction is reduced and stability is improved, but the device complexity increases
Solution Approach 1:
The roller serves multiple functions simultaneously: it reduces friction between the base and rotation bracket, provides a stable rotation interface, and acts as a mediator for the aperture adjustment mechanism. This multi-functionality justifies the additional component by consolidating several requirements into a single element.
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 solution improves the relative rotation stability of the base and rotation bracket, reduces friction, and enhances the durability and precision of aperture adjustments, leading to better camera performance and extended service life.
Implementation Method 1
the roller is located between the base and the rotation bracket, and is in rollable connection with the base and the rotation bracket
Data Source
AI summary
Disclosed in the present application are a variable aperture, a camera module and an electronic device, which relate to the field of electronic technology. The variable aperture includes a roller, a rotation bracket, a plurality of blades and a base. The base is annular. The base is sleeved outside the rotation bracket. The roller is located between the base and the rotation bracket and is in rollable connection with the base and the rotation bracket. The multiple blades are annularly distributed on one side of the base and are encircled to form an aperture hole, multiple blades are in rotatable connection with the base and in slidable connection with the rotation bracket.