Abstract: The present invention provides a microspeaker having a water drainage structure capable of rapidly discharging water, entering the microspeaker, to the outside. In the case of a woofer-tweeter speaker, water is discharged through the side and bottom of a housing, and in the case of a 1-way speaker, water is discharged through the side of a housing. In addition, the present invention provides a connection portion that is formed to position a plurality of soldering points, to which a woofer wire and a tweeter wire are bonded, not outside a driver but inside or at the boundary of a space formed by the driver in a TWS-type 2-way microspeaker. This secures design freedom and save space by reducing the overall length of a small speaker.

Abstract: The present invention provides a headset with a waterproof structure having an external appearance formed by a front housing having a cap shape and a rear housing that decreases in volume as it goes down and is formed with a sound emitting part at an outlet, the headset comprising: the front housing coupled to the rear housing in an inclined state to one side with respect to a horizontal line; the rear housing accommodating a bracket in an upper portion thereof; the bracket including a first long sidewall and a second short sidewall that extend to boundaries of the front and rear housing, respectively, and a sealing member mounted at a boundary portion between the front and the rear housing and the bracket, wherein the sealing member is made of a flexible plastic resin or a silicone material, with elasticity.

Abstract: Disclosed herein is an ear tip having a flange made of silicone foam, the ear tip including a central core and a flange surrounding the core. The flange is made of silicone foam, and the core is made of a material harder than the silicone foam. Before the silicone is molded, attachable films or tapes may be attached to the top and bottom surfaces of the mesh, thereby preventing burrs generated during the molding of silicone from adhering to the mesh.

Abstract: The present invention provides a microphone mounting structure for a headset, the microphone mounting structure comprising: a housing surrounding the headset and forming an audio output channel along a vertical direction inside; a microphone mounted along the vertical direction inside a space formed by the audio output channel, and a substrate connected to a main board and including a supporting part mounted in a rear side of the microphone, wherein the microphone includes a circuit substrate formed in a rear side of the microphone, and the circuit substrate includes a hole, wherein the supporting part includes a substrate hole communicating the hole.

Abstract: The present invention provides a duct structure of an earphone speaker unit comprising: a diaphragm; a speaker module located at a back of the diaphragm, comprising an acoustic coil, a magnet, and a yoke, and generating sound of the diaphragm, and a frame member surrounding the yoke, wherein the frame member forms a donut-shaped duct space along circumference of the yoke, and wherein the frame member comprises: an inflow hole formed to enable sound generated from the speaker module to flow into the duct space; an outflow hole formed to enable sound inside the duct space to flow out to the outside; a partition wall blocking a path of sound in a vertical direction inside the duct space; a tuning hole formed to penetrate through the partition wall; and a mesh member installed to block the tuning hole, thereby enabling acoustic tuning.

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 hybrid acoustic apparatus. The hybrid acoustic apparatus includes: a rectangular microspeaker used as a first acoustic device; and a second acoustic device integrated with the microspeaker. The microspeaker includes a plate configured to constitute a part of a magnetic field part, a magnet configured to be disposed beneath the plate, a diaphragm configured to be disposed on the plate, and a frame configured to accommodate the diaphragm, the plate, and the magnet. A path of vibration sound generated by the diaphragm is formed to be perpendicular to a direction in which the diaphragm vibrates so that the vibration sound is discharged through a side surface of the diaphragm.

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: 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 the structure of a microspeaker. The structure of the microspeaker includes: a frame configured to have an internal space, a magnetic field part disposed inside the frame and configured to form an air gap along with the frame, and a diaphragm configured to vibrate vertically in response to the operation of a voice coil located inside the air gap. A duct configured to guide an air flow is formed in the circumferential direction of the frame. At least one frame hole is formed such that air enters the duct from the internal chamber of the frame. At least one duct sound outlet is formed such that air having entered the duct is discharged to the outside through the guide path of the duct.

Abstract: The inside of the housing of an acoustic device, such as an earphone, is divided into two or more spaces based on a driver. Diaphragms are disposed to cover a nozzle communicating with an ear of a user and a vent hole formed in the back of the housing. Optimum sound quality can be secured by adjusting the sizes of the spaces formed by the diaphragms and the housing and the locations where the diaphragms are disposed. When the housing is of a sealed type, low-band sound pressure can be effectively prevented from being lost.

Abstract: The present disclosure provides a micro speaker device with a water-proof structure by which water entering a protector is prevented from entering a gap formed between a top face of the protector and a bottom face of an upper plate of an outer casing and a gap formed between a bottom face of the protector and a top face of an outer peripheral portion of a vibration plate. For this end, the protector includes: an upper portion extending upward so as to be in close contact with a bottom face of the upper plate of the outer casing; and a lower portion, wherein the lower portion includes: a sealing member made of a rubber material, wherein the sealing member extends downward to closely contact a top face of the outer peripheral portion of the vibration plate; and a support member made of a plastic material, wherein the support member closely contacts a side face of the sealing member to support the sealing member.

Abstract: Provided is a linear acoustic transducer for transducing an electrical signal into an acoustic signal and, more specifically, to a linear acoustic transducer, which can efficiently deliver the vibration energy of a driver by connecting a driving rod, to which a plurality of diaphragms are fixed, to the center of the driver and has partitions integrally formed inside a housing at regular intervals such that the partitions are located between the plurality of diaphragms, thereby generating an acoustic signal by compressing or expanding the air between the diaphragms and the partitions when the plurality of diaphragms vibrate upward and downward by the vibration of the driving rod.

Abstract: Disclosed herein is a canal type earphone with a pressure equilibrium means, capable of eliminating a pressure difference between a user's external auditory meatus and an outside during wearing of the canal type earphone. A pressure equilibrium means includes a side air passage through which air within a tube or air within a speaker unit in the canal type earphone is discharged to a side surface of a gasket or a side surface of the speaker unit, and a rear air passage through which air in the side surface of the speaker unit is discharged to the rear of the speaker unit.

Abstract: Disclosed herein is a canal type earphone with a pressure equilibrium means, capable of eliminating a pressure difference between a user's external auditory meatus and an outside during wearing of the canal type earphone. A pressure equilibrium means includes a side air passage through which air within a tube or air within a speaker unit in the canal type earphone is discharged to a side surface of a gasket or a side surface of the speaker unit, and a rear air passage through which air in the side surface of the speaker unit is discharged to the rear of the speaker unit.

Abstract: Disclosed is a microspeaker with an inner resonance chamber, more particularly a microspeaker with an inner resonance chamber which improves quality of sound and enables slim and compact design of the microspeaker by blocking rearward sound generated at the rear side of the vibration plate to prevent interference of a rearward sound with a forward sound generated at the front side of a vibration plate and installing a chamber with a specific volume within the microspeaker to allow the rearward sound to cause resonance.

Abstract: Disclosed is a high power micro-speaker having a damper plate. More particularly, disclosed is a high power micro-speaker in which a damper plate has an opening through which a voice coil can pass, and the voice coil having passed through the opening is attached to a lower surface of a vibrating plate that is located above the damper plate, which provides an increased vibrating region. As such, enhanced output power of the micro-speaker is accomplished by increasing a height of the voice coil, or a slimmer design of the micro-speaker is accomplished by reducing a height of a frame.

Abstract: Disclosed is a microspeaker with an inner resonance chamber, more particularly a microspeaker with an inner resonance chamber which improves quality of sound and enables slim and compact design of the microspeaker by blocking rearward sound generated at the rear side of the vibration plate to prevent interference of a rearward sound with a forward sound generated at the front side of a vibration plate and installing a chamber with a specific volume within the microspeaker to allow the rearward sound to cause resonance.