Gimbal Mechanism Spherical Body Fixing for Shake Correction
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Solution Overview
Problem
Existing optical units with shake correction functions face challenges in accurately positioning and fixing spherical bodies for precise support, leading to difficulties in maintaining high accuracy during gimbal mechanism operation, which affects the overall size and effectiveness of the shake correction mechanism.
Innovation Solution
The optical unit incorporates a gimbal mechanism with a first and second connection mechanism, utilizing spherical bodies and concave curved faces with fixing holes for precise positioning and fixation, allowing for accurate turnable connection around multiple axes, and employs magnetic drive mechanisms for shake correction, enabling accurate positioning and support of the optical module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of the spherical body is made small for reducing the size of the connection mechanism, then the size of the optical unit is reduced, but it becomes difficult to fix the spherical body in a positioned state on the inner side of the corner part of the gimbal frame
Solution Approach 1:
The connection mechanism is divided into separate components: the gimbal frame, the corner part, and the spherical body. The spherical body is positioned within a recessed part of the corner part and fixed using a fixing structure, allowing the spherical body to be small while maintaining positioning accuracy through the segmented design.
Solution Approach 2:
A recessed part is introduced as an intermediary structure between the spherical body and the corner part. This recessed part provides a precise positioning space for the spherical body, enabling accurate fixation even when the spherical body is small in size.
2Volume of moving object
If the spherical body is not positioned accurately, then the size can be reduced, but it becomes difficult to support the movable body by the gimbal frame with a high degree of accuracy
Solution Approach 1:
The spherical body is preliminarily positioned within the recessed part of the corner part before final fixation. This preliminary positioning ensures that the spherical body is correctly located, maintaining support accuracy for the movable body even when the spherical body is small.
Solution Approach 2:
The fixing method replaces traditional mechanical fastening with a magnetic fixing mechanism. A magnet is embedded in the corner part to magnetically fix the spherical body, providing reliable positioning and support accuracy without requiring complex mechanical fastening structures.
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
This solution enables high-accuracy shake correction by ensuring precise positioning and fixation of spherical bodies, enhancing the optical unit's ability to stabilize images during movement, while also reducing the overall size and complexity of the shake correction mechanism.
Implementation Method 1
a magnetic drive mechanism structured to swing the movable body around the first axis and around the second axis
Data Source
AI summary
An optical unit with a shake correction function includes a movable body, a gimbal mechanism, a fixed body and a magnetic drive mechanism. The gimbal mechanism includes a gimbal frame, a first connection mechanism turnably connecting the movable body with the gimbal frame around a first axis, and a second connection mechanism turnably connecting the fixed body with the gimbal frame around a second axis. The first connection mechanism includes a first spherical body, a first spherical body fixing part to which the first spherical body is fixed in one of the movable body and the gimbal frame and, in the other, a first spherical body support part having a first concave curved face which faces the first spherical body fixing part and contacts with the first spherical body, and the first spherical body fixing part has a first fixing hole to which the first spherical body is partly fitted.