Abstract: An electronic device is provided. The electronic device includes a housing having a key hole formed therein and including a switch disposed therein, the key hole being formed such that a first length is longer than a second, perpendicular length and a key assembly coupled to the housing, a portion of the key assembly being disposed inside the key hole. The key assembly includes a cover member, a portion of which is exposed outside the housing through the key hole and a pressing member that is coupled to the cover member and presses the switch. The pressing member includes first protrusions protruding from opposite longitudinal ends of the pressing member in a first direction, and the first protrusions are brought into contact with an inner wall of the key hole and have elasticity such that a portion of the first protrusions are capable of elastic deformation.

Abstract: The present invention relates to an earphone equipped with a pressure equalizing means, and more specifically to an earphone equipped with a pressure equalizing means, in which a speaker unit is disposed inside an earphone housing in a longitudinal direction and a first air path is formed to discharge sound waves, generated by the diaphragm of the speaker unit, to the external ear canal through one side of the speaker unit. When air inside the external ear canal is discharged out of the speaker unit, air is discharged into the vibration space of the speaker unit by using the first air path, and is then discharged out of the speaker unit through a second air path formed in the other side of the top surface of the speaker unit.

Abstract: Disclosed herein is a grill-integrated low-pass filter. The grill-integrated low-pass filter includes a conduit-type low-pass filter part in which a sound conduit is formed inside an internal space of a grill, which is a mechanism assembled and used in a housing, in an empty tubular form, and the conduit-type low-pass filter part is integrated with the grill. According to the present invention, there are provided the grill-integrated low-pass filter that is designed in a structure in which the sound conduit is formed inside the internal space of the grill disposed and used in a housing in order to protect a speaker driver, etc. and is thus fabricated in a grill-integrated form, thereby achieving the effects of improving the sound quality of the speaker and reducing characteristic deviations in a low-frequency band.

Abstract: Disclosed herein is a grill-integrated low-pass filter. The grill-integrated low-pass filter includes a conduit-type low-pass filter part in which a sound conduit is formed inside an internal space of a grill, which is a mechanism assembled and used in a housing, in an empty tubular form, and the conduit-type low-pass filter part is integrated with the grill. According to the present invention, there are provided the grill-integrated low-pass filter that is designed in a structure in which the sound conduit is formed inside the internal space of the grill disposed and used in a housing in order to protect a speaker driver, etc. and is thus fabricated in a grill-integrated form, thereby achieving the effects of improving the sound quality of the speaker and reducing characteristic deviations in a low-frequency band.

Abstract: Disclosed herein is an earphone having a nozzle-integrated structure with a DSF applied thereto. The earphone includes: a housing formed as a penetrated body, and configured such that a nozzle portion is provided therein; a retainer configured to be fastened inside the housing; a magnet configured to generate magnetic force; a yoke configured to concentrate magnetic force; a plate configured to collect magnetic force; a voice coil configured to generate a magnetic field and vibrate through the interaction with the magnet; and a diaphragm configured to vibrate and generate sound. A penetrated sleeve is provided inside the housing and forms a nozzle portion. A drum safety filter (DSF) hole is formed in one side of the edge of a seating surface and a mesh member is disposed below a portion of the retainer in which the DSF hole is formed.

Abstract: A rectangular microspeaker according to the present invention transfers vibration sound through the front surface or side surface of a diaphragm. In order to maximize an effective vibration area and to expand a volume, all parts including a frame are fabricated in a rectangular shape. The present invention is applied to a P type, an F type, and a composite type. The vibration sound generated on the bottom of the diaphragm as well as the vibration sound generated on the top of the diaphragm may be discharged through the side surface. A magnetic field part may be insert-molded separately or along with the frame.

Abstract: A rectangular microspeaker according to the present invention transfers vibration sound through the front surface or side surface of a diaphragm. In order to maximize an effective vibration area and to expand a volume, all parts including a frame are fabricated in a rectangular shape. The present invention is applied to a P type, an F type, and a composite type. The vibration sound generated on the bottom of the diaphragm as well as the vibration sound generated on the top of the diaphragm may be discharged through the side surface. A magnetic field part may be insert-molded separately or along with the frame.

Abstract: Disclosed herein is an acoustic device with improved acoustic performance. The acoustic device includes: a housing that forms the appearance of the acoustic device; a magnet that generates magnetic force; a yoke that includes paramagnetic material that concentrates the magnetic force; a voice coil that vibrates due to the magnetic force when an electric signal having sound information is applied; a diaphragm that comes into close contact with the voice coil and that vibrates and generates sound in response to the vibration of the voice coil; a plate that is located between the diaphragm and the magnet; and a locking ring that is located on the plate and that fastens part of the diaphragm, wherein the sectional surface of the locking ring has a rectangular shape the height of which is greater than the width thereof.

Abstract: Disclosed herein is an acoustic device with improved acoustic performance. The acoustic device includes: a housing that forms the appearance of the acoustic device; a magnet that generates magnetic force; a yoke that includes paramagnetic material that concentrates the magnetic force; a voice coil that vibrates due to the magnetic force when an electric signal having sound information is applied; a diaphragm that comes into close contact with the voice coil and that vibrates and generates sound in response to the vibration of the voice coil; a plate that is located between the diaphragm and the magnet; and a locking ring that is located on the plate and that fastens part of the diaphragm, wherein the sectional surface of the locking ring has a rectangular shape the height of which is greater than the width thereof.