Vibration Actuator

The vibration actuator achieves precise positioning and balanced vibration characteristics by using an equilateral triangle central axis for the weight and a corresponding shaft hole in the leaf spring, addressing the alignment and balancing issues in existing designs.

JP7664696B2Active Publication Date: 2025-04-18FOSTER ELECTRIC CO LTD
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Patent Information

Application Number
JP2020181930
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2020-10-29
Publication Date
2025-04-18
Estimated Expiration
2040-10-29

AI Technical Summary

Technical Problem

Existing vibration actuators face challenges in accurately positioning the leaf spring and weight, leading to uneven vibration characteristics and potential for abnormal vibrations and noises.

Method used

The vibration actuator design features a tube-shaped case with a coil, a movable member, and a spiral arm leaf spring. The central axis of the weight is formed as an equilateral triangle, aligning with a corresponding shaft hole in the leaf spring, allowing for precise positioning and alignment.

Benefits of technology

This configuration enables easy assembly and suppresses vibration abnormalities, providing stable and uniform vibration characteristics by ensuring precise alignment and balancing of the leaf spring and weight.

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Patent Text Reader

Abstract

To provide a vibration actuator having excellent vibration characteristics that facilitates positioning of a leaf spring and a weight and neither causes abnormal vibration nor generates abnormal noise.SOLUTION: The vibration actuator is constituted of: a cylindrical case 2; a coil 21 provided in the case 2; a movable element 4 that is vibrated along a vibration axis line O of the case 2 by the coil 21; and two leaf springs 5 whose outer periphery portions are fixed to the case 2 and whose inner periphery portions are fixed to the movable element 4. The movable element 4 is provided with a polygonal central axis 324 protruding in a direction of the vibration axis line O. The leaf spring 5 has a polygonal axial hole 50, formed in the center of the inner periphery portion, to which the central axis 324 is fitted.SELECTED DRAWING: Figure 3
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Citation Information

Patent Citations

  • For vehicular - - supporter plate device

    JP1984189564U

  • Resonance driving actuator

    JP2006101650A

  • Diaphragm pump

    JP2006194181A

  • Linear actuator

    JP2010279162A

  • Vibration actuator

    JP2019068569A