Long-stroke piezoelectric driving device for camera module
By combining a cantilever beam-shaped friction elastic element, carbon fiber guide pillars, and distributed Hall sensors, the problems of insufficient driving force, pre-pressure failure, and high positioning cost in ultra-long stroke movement of miniature camera modules are solved, achieving efficient, low-cost stable positioning and fast focusing.
CN224303917UActive Publication Date: 2026-05-29厦门市众惠微电子有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 厦门市众惠微电子有限公司
- Filing Date
- 2025-07-24
- Publication Date
- 2026-05-29
Smart Images
Figure CN224303917U_ABST
Abstract
The utility model relates to a kind of long-stroke piezoelectric driving devices for camera module, including piezoelectric driving unit, lens carrier, telescopic guide pillar, friction elastic member and guide mechanism;The friction elastic member is in the form of cantilever beam, one end is fixed to lens carrier, the other end is elastically crimped in telescopic guide pillar surface;The piezoelectric driving unit includes piezoelectric component and telescopic guide pillar fixed to its end portion;The guide mechanism includes two groups of parallelly arranged ball guide groups, each ball guide group is formed by multiple balls linearly arranged along optical axis direction, and ball is embedded in the guide groove of lens carrier and the limiting groove of base simultaneously;The lens carrier is frictionally engaged with telescopic guide pillar by friction elastic member.The utility model provides a kind of long-stroke piezoelectric driving devices for camera module, with impact resistance, low cost and super long stroke etc., can effectively solve the problem of pre-press failure, guide wear and positioning high cost.
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