Linear vibration motor having a buffer member
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJee Sung Lee, Kwang Hyung Lee
Life of this patent
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Abstract
A linear vibration motor includes: a top cover; a bracket coupled with the top cover to provide an internal space; a vibration unit having a mass body mounted at the internal space and linearly moving in a horizontal direction; an actuator having a magnet fixed to the mass body and a coil installed within a range of a magnetic field of the magnet and generating electromagnetic force to allow the vibration unit to move linearly in a horizontal direction; and a buffer member disposed in a space between the mass body and the bracket and limiting displacement of the vibration unit.
Claims9
A linear vibration motor comprising:
- a top cover;
- a bracket coupled with the top cover to provide an internal space and including a bobbin having a cylindrical shape;
- a vibration unit having a mass body mounted in the internal space and moving linearly in a horizontal direction;
- an actuator having a coil insertedly fixed to an outer circumferential surface of the bobbin and a magnet fixed to the mass body and inserted into an inside of the bobbin such that both ends of the magnet are exposed outwardly of the coil, and the actuator generating electromagnetic force through interaction with the coil to allow the vibration unit to move linearly in the horizontal direction;
- and
- a buffer member disposed in a space between the mass body and the bracket and limiting displacement of the vibration unit,
- wherein the mass body includes an accommodation space for accommodating the coil and the magnet therein.
Dependencies are inferred from the claim text.