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US 2003/0142845 A1Published application
Vibrating device for axially vibrating a movable member
AssigneeCitizen Electronics Co., Ltd.
InventorsKazumi Miyamoto, Kenshi Aihara, Naoki Miura
Life of this patent
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Abstract
A vibrating device has an axially elongated frame, and a vibrating assembly including a hollow yoke. A magnetic driving device is provided for axially vibrating the vibrating assembly. A supporting shaft is provided for axially slidably supporting the vibrating assembly in the frame.
Claims5
A vibrating device comprising:
- an axially elongated frame;
- a vibrating assembly including a hollow yoke having an opening at an end thereof, and a permanent magnet secured to the yoke;
- a magnetic driving device including a coil bobbin cantilevered in the frame and having an end portion inserted in the yoke from the opening, a driving coil mounted on the coil bobbin;
- and
- at least one spring provided for resiliently holding the vibrating assembly in the frame;
- characterized in that
- at least one supporting shaft is provided for axially slidably supporting the vibrating assembly in the frame.
4 more elements
Dependencies are inferred from the claim text.