Linear vibration generating device
AssigneeJahwa Electronics Co., Ltd.
InventorsSoon Koo SHIM, Young Bin CHONG, Nam Jin CHOI
Life of this patent
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Abstract
A linear vibration generating device. The linear vibration generating device includes a vibrator including an annular magnet and a weight surrounding the magnet; a stator including a coil disposed at a center of the magnet and a yoke surrounding the coil; an elastic member disposed between the vibrator and the stator to elastically support the vibrator; and an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height. The anti-tilting unit is a non-magnetic body with a cylindrical shape having an outer diameter equal to or greater than a diameter of an outermost portion of the yoke and smaller than an inner diameter of the magnet.
Claims12
A linear vibration generating device, comprising:
- a vibrator including an annular magnet and a weight surrounding the magnet;
- a stator including a coil disposed at a center of the magnet and a yoke surrounded by the coil;
- an elastic member disposed between the vibrator and the stator to elastically support the vibrator;
- and
- an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height,
- wherein the anti-tilting unit is a non-magnetic body with a cylindrical shape having an outer diameter equal to or greater than a diameter of an outermost portion of the yoke and smaller than an inner diameter of the magnet.
A linear vibration generating device, comprising:
- a vibrator including an annular magnet and a weight surrounding the magnet;
- a stator including a coil disposed at a center of the magnet and a yoke surrounded by the coil;
- an elastic member disposed between the vibrator and the stator to elastically support the vibrator;
- and
- an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height,
- wherein the anti-tilting unit is a non-magnetic body with a triangular or polygonal pillar shape so that an outermost surface thereof farthest from a center thereof is aligned at the same location as an outermost surface of the yoke or protrudes outwards in comparison to at least an outermost surface of the yoke so as to be spaced apart from an inner circumference of the magnet with a predetermined gap (g).
A linear vibration generating device, comprising:
- a vibrator including an annular magnet and a weight surrounding the magnet;
- a stator including a coil disposed at a center of the magnet and a yoke surrounded by the coil;
- an elastic member disposed between the vibrator and the stator to elastically support the vibrator;
- and
- an anti-tilting unit coaxially coupled to a top of the yoke in a predetermined height,
- wherein an outer diameter of the anti-tilting unit is equal to or greater than an outer diameter of the coil.
Dependencies are inferred from the claim text.