Blade Driving Device Miniaturization via Segmented Cover Support
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Solution Overview
Problem
Existing blade driving devices for electronic devices, such as laptops, are limited in miniaturization due to their size constraints, particularly in accommodating high-resolution camera units, which hinders the miniaturization of the entire device and affects design and functionality.
Innovation Solution
A compact blade driving device design featuring a base with a shorter length, an actuator, a cover with a greater length than the base, and a support leg, allowing the blade to cover and uncover an opening efficiently while maintaining a thinner frame, thus enabling miniaturization and improved design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the base is made to extend across the entire area in the longitudinal direction to support the actuator, then the actuator is properly held and positioned, but the volume and length of the blade driving device increase, obstructing miniaturization
Solution Approach 1:
The cover is divided into a first cover and a second cover, with the support leg separating the structural functions. This segmentation allows the base to be shortened while the cover extends to provide the necessary support length, resolving the contradiction between compact base volume and adequate support span
Solution Approach 2:
The support leg extends in the longitudinal direction from the second cover toward the fixed surface, utilizing the depth dimension to provide support without increasing the lateral footprint. This dimensional approach allows proper actuator support while maintaining a compact overall device volume
2Volume of moving object
If the base length is reduced to miniaturize the blade driving device, then the overall device size decreases enabling thinner frames, but the actuator may not be properly supported or positioned
Solution Approach 1:
By separating the cover into first and second covers with the support leg, the structural support function is decoupled from the base. The base can be minimized for compactness while the cover assembly provides the necessary support span, ensuring actuator reliability without compromising device miniaturization
Solution Approach 2:
The support leg acts as an intermediary element that transfers the load and positioning requirements from the shortened base to the fixed surface. This intermediary structure enables the base to be compact while maintaining proper actuator support through the extended cover and support leg assembly
Data Source
AI summary
A small blade driving device is incorporated in a limited space. A cover includes a first cover fixed to a base and a second cover protruding from the first cover in a movement direction of a blade. A support leg protrudes from the second cover toward a first surface of a module substrate and is supported by the first surface. The base may not have the same length as the cover and have a shorter length (miniaturized), further miniaturizing a blade driving device.