OIS Lock Ring Protrusion Geometry for Vibration Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional correction optical devices for image blur correction have complex structures due to the need for additional components like ball plungers and grooves, which can lead to unintentional movement of the slide plate during power-off vibrations, causing rattling and mistaken perception of device malfunction.
Innovation Solution
The correction optical device employs shaped protrusions on the rotary ring and slide plate that generate a component force to maintain the locked state without additional members like ball plungers, ensuring the slide plate remains locked during power-off vibrations, simplifying the structure by using inclined tangent lines and arc-shaped protrusions to prevent unintentional unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional components like ball plungers and grooves are used to maintain the locked state, then the reliability of preventing unintentional unlocking is improved, but the device complexity increases
Solution Approach 1:
The invention extracts and eliminates the ball plunger and groove components from the locking mechanism. Instead of using these additional components, the patent uses the interaction between the protrusion on the rotary ring and the recess on the slide plate alone to maintain the locked state, thereby reducing device complexity while maintaining reliability
Solution Approach 2:
The locking mechanism becomes self-sufficient by using the geometric shapes of the protrusion and recess to automatically generate the component force needed to maintain the locked state. The system serves itself by utilizing the inherent mechanical interaction between existing components rather than requiring external ball plungers or grooves
2Ease of operation
If the slide plate is kept in the unlocked state during power-off, then the ease of operation for quick activation is improved, but object-generated harmful factors increase due to rattling sounds and perceived malfunction
Solution Approach 1:
The invention applies preliminary anti-action by designing the protrusion and recess shapes to generate a component force that actively maintains the locked state during power-off vibrations. This pre-established mechanical force counteracts vibrations before they can cause unintentional unlocking, preventing rattling sounds and perceived malfunction while allowing quick activation when power is restored
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A correction optical device comprises an OIS frame (120), and an OIS lock ring (110) that restricts a movement of the OIS frame (120). The OIS lock ring (110) rotates so that a position of a first protrusion (112) reciprocates between a lock position and an unlock position. The first protrusion (112) and the second protrusion (122) are formed into such shapes that generate a component force (Fb) acting on the first protrusion (112) in a direction from the unlock position toward the lock position when a force (F) causing the first protrusion (112) and the second protrusion (122) to push against each other is generated between the first protrusion (112) and the second protrusion (122).