Mplus Co., Ltd.

Seuk Hwan Chung

Nam Sock Kim

An elastic member structure includes: a loop type inner plate; a loop type outer plate having the same center as the loop type inner plate; and a plurality of spiral elastic plates connected to the loop type inner plate and the loop type outer plate and having given elasticity, wherein the loop type outer plate includes a plurality of first areas having areas connected to the ends of the plurality of spiral elastic plates and a plurality of second areas formed between the plurality of first areas and the outer size of each first area of the loop type outer plate is greater than the outer size of each second area thereof.

Elastic member structure and linear vibration motor using the same

A linear vibration generator including a plate type spring each having bent portions includes: a case for covering top and side portions thereof; a bracket coupled to the underside of the case; a coil fixed to one side of a top surface of the bracket and receiving external power from an FPCB; a plate type spring having bent portions and configured to allow one end thereof to be fixed to a vibrator; and the vibrator having a weight fixed to one end of the plate type springs and a magnet insertedly fixed to a hollow portion of the weight.

Linear vibration generator including plate type spring having bent portion

A linear vibration motor includes: a casing having an upper casing whose bottom is open and a lower casing coupled to the upper casing to form an internal space therein; a stator disposed on top of the lower casing in the internal space formed by the casing; an elastic member disposed around the stator in the internal space formed by the casing in such a manner as to allow one surface thereof to be coupled to the lower casing; an oscillator mounted on the other surface of the elastic member and having a ring-shaped magnet disposed around the stator; and a magnetic fluid applied to top of the ring-shaped magnet, wherein the upper casing includes a ring-shaped protrusion formed on the inner surface facing the lower casing, and an inner diameter of the ring-shaped protrusion is greater than an outer diameter of the ring-shaped magnet.

Linear vibration motor

A technology for improving a device structure so that an external impact does not occur in a coil in order to solve a problem in that several attachments, such as coil, included in a linear vibration generator are separated or broken due to a small impact test or drop test on the linear vibration generator. The attachments, such as coil, included in the linear vibration generator can be prevented from being disconnected, separated or broken due to the execution of a small impact test and drop test on the linear vibration generator.

Growing community of inventors

Suwon-si, South Korea

Seuk Hwan Chung