Samsung Electro-Mechanics Co., Ltd.

Woo Seok Yang

Jae Han Park

Ta Kyoung Lee

Jung Hyun Cho

Byoung Hown Han

Young Jun Joo

Seung Chul Kim

The present disclosure relates to a printed circuit board including a first insulating layer, a pad embedded in an upper portion of the first insulating and having an upper surface portion, a side surface portion, and a lower surface portion, where a portion of the upper surface portion and a portion of the side surface portion protrude from the upper surface of the first insulating layer, and a metal layer covering the portion of the upper surface portion, the portion of the side surface portion, and a portion of the lower surface portion of the pad.

Printed circuit board

A printed circuit board includes: a core portion including a cavity in one surface thereof; first and second penetration holes disposed in a bottom surface of the cavity and penetrating through the core portion; an electronic component disposed in the cavity; and an insulating material filling the cavity and each of the first and second penetration holes, wherein a sidewall of the cavity is higher than the electronic component.

A printed circuit board includes an insulating layer; a recess portion disposed on one surface of the insulating layer; and a circuit layer disposed on the one surface of the insulating layer and including a signal pattern and a ground pattern. At least a portion of the ground pattern covers at least a portion of the recess portion.

A vibration motor includes a stator assembly, a rotor assembly, a shaft and a pair of brushes having different osculatory tracks. The stator assembly includes a magnet and a lower substrate. The rotor assembly has an eccentric weight, and includes a commutator positioned on the lower surface thereof and a coil. The shaft is inserted into a rotary center of the rotor assembly for forming a rotary shaft of the rotor assembly.

Vibration motor having brushes with different osculatory tracks

Disclosed is a coin type vibrating motor including: a rotor provided with an upper base including at least one wound coil placed on the upper surface thereof; a stator including a pair of brushes placed on the upper surface of a lower base, on which a magnet is mounted corresponding to the wound coil; and a shafting unit including a bearing member formed integrally with the upper base to surround the wound coil and the weight, and a shaft, of which the bearing member is installed on the outer periphery, wherein an oil scattering-preventing portion, which exposes an assembling region, and has an inner surface extended downwardly to a designated length while being spaced from the inner surface of the shaft, is formed integrally with the lower surface of an insulator exposed to the outside through an opening of the upper base.

Coin type vibrating motor

A vibration motor having a rotor and a stator is provided. The vibration motor includes a commutator mounted on the rotor and a brush mounted on the stator. The brush is line contact with the commutator of rotor in order to maintain a stable contact between the commutator and the brush and to reduce spark between the commutator and the brush due to the stable line contact between the commutator and the brush.

Vibration motor

Disclosed is a vibration motor having a connector header coupled to an outer face of a housing via welding to maintain a securely fixed position even under external impact or dropping.

Growing community of inventors

Kyungki-do, South Korea

Woo Seok Yang