KR101821579B1 - Speaker Unit - Google Patents

Abstract

According to an aspect of the present invention, there is provided a speaker unit comprising: a coil generating a magnetic field through a current; An armature provided with the coil and magnetized by a magnetic field generated through the coil; A drive rod having one side vertically coupled to the armature; A magnet for generating a magnetic field in a part of the armature; A core receiving the magnet; A diaphragm including a vibrating part to which the other side of the drive rod is attached and vibrated by the drive rod and a film part to be attached to the vibrating part; A lower housing in which the coil, the armature and the core are housed; And an upper housing coupled to the lower housing, wherein a side surface of the film portion is attached to an inner surface of the upper housing or the lower housing.

Description

Speaker Unit {Speaker Unit}

The present invention relates to a speaker unit of a balanced amateur type.

2. Description of the Related Art [0002] In recent years, with the development of technologies such as information communication technology and electronic devices, video communication and voice communication are possible, and mobile communication terminals such as smart phones including audio functions and camera functions have become popular.

As a result, various electronic devices are becoming increasingly smaller, and many functions are intensively included in miniaturized electronic devices. The mobile communication terminal and the miniaturized electronic devices have a built-in speaker for sound generation function.

These loudspeakers can be largely divided into dynamic and armature speakers. A dynamic speaker (dynamic speaker) is also called a moving coil type, and basically consists of a permanent magnet, a central coil, and a vibration plate that vibrates according to the movement of the center coil. When the current flows through the center coil, the center coil moves due to the interaction with the magnetic field formed by the permanent magnet. At this time, the vibration plate vibrates as the center coil moves.

However, since dynamic speakers are limited in their miniaturization, recently, a balanced armature type (Balanced Armature, BA) speaker which is convenient to miniaturize is widely used. Balanced amateur loudspeakers generate sound by vibrating the diaphragm through vibrations of the armature that correspond to the medium that converts electrical energy into kinetic energy.

In this connection, Korean Patent Registration No. 10-1297297 (hereinafter referred to as "prior art") and the like are known. The prior art suggests an amateur speaker and a manufacturing method thereof.

Specifically, in the related art, a coil storage unit is inserted into a diaphragm guide fixed to a bottom case having a certain shape and a coil inserted in the coil storage unit and forming an outer tube, and a technique in which an amateur and a vibration plate are disposed to be.

However, in the related art, there is a problem that it is difficult to adjust the pressure inside the case (housing) caused by the vibration of the diaphragm due to the absence of a damper for adjusting the damping. It is difficult to secure a space for installing the damper on the rear surface.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a vibration damping device capable of adjusting a pressure inside a housing generated by vibration of a diaphragm and securing a space for installing a damper on a rear surface of the housing Balanced amateur type speaker unit.

According to an aspect of the present invention, there is provided a speaker unit comprising: a coil generating a magnetic field through a current; A terminal electrically connected to the coil to receive external power; An armature provided with the coil and magnetized by a magnetic field generated through the coil; A drive rod having one side vertically coupled to the armature; A magnet for generating a magnetic field in a part of the armature; A diaphragm including a vibrating part to which the other side of the drive rod is attached and vibrated by the drive rod and a film part to be attached to the vibrating part; And a housing for protecting the coil, the terminal, the drive rod, the magnet, and the diaphragm from the outside, wherein an acoustic hole is formed on one side of the diaphragm to generate sound generated by the vibration of the diaphragm, And a damping hole formed for the damping member.

The speaker unit may further include a damper coupled to the damping hole formed in the housing for damping control.

Here, the housing is provided with a terminal hole formed on the same surface as the position where the damping hole is formed.

Further, the damping hole and the terminal hole are formed on the other side of the housing opposite to the acoustic hole formed on one side of the housing.

In addition, the terminal may include a connection portion that is located inside the housing and is electrically connected to the coil; And an exposed portion extending from the connection portion and exposed to the outside of the housing through the terminal hole for receiving external power.

The present invention has the following effects.

First, since the damping hole for adjusting the damping and the damper coupled to the damping hole are provided in the housing, the pressure generated by the vibration of the diaphragm in the housing can be adjusted, so that the sound output through the acoustic hole can be variously adjusted .

Secondly, since the terminal is provided in a structure in which only a part of the terminal is exposed to the outside on the other side (rear surface) of the housing opposite to the acoustic hole formed on one side of the housing, a space capable of providing a damping hole and a damper is provided on the rear surface of the housing The vibration of the diaphragm in the housing can be efficiently controlled.

1 is an exploded perspective view showing components of a speaker unit according to an embodiment of the present invention.
2 is a cross-sectional view illustrating a speaker unit according to an embodiment of the present invention.
FIG. 3 is a perspective view illustrating an embedded portion of an armature in a speaker unit according to an embodiment of the present invention. FIG.
4 is a view illustrating an attachment state between a housing and a film portion of a speaker unit according to an embodiment of the present invention.
5 is a perspective view illustrating a lower housing of a speaker unit according to an embodiment of the present invention.
6 is a rear perspective view illustrating a speaker unit according to an embodiment of the present invention.
7 is a cross-sectional view illustrating another speaker unit according to an embodiment of the present invention.

Hereinafter, a detailed description of related art will be omitted if it is determined that the gist of the present invention may be unnecessarily obscured. In addition, numerals used in the description of the present invention are merely an identifier for distinguishing one component from another.

In addition, the terms used in the specification and claims should not be construed in a dictionary meaning, and the inventor may, on the principle that the inventor can properly define the concept of a term in order to explain its invention in the best way, And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

The preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

≪ Description of Speaker Unit >

 FIG. 1 is an exploded perspective view illustrating components of a speaker unit according to an embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating a speaker unit according to an embodiment of the present invention. FIG. 4 is a view for showing an attachment state between a housing and a film unit of a speaker unit according to an embodiment of the present invention, and Fig. 5 is a perspective view showing an embodiment of the present invention FIG. 6 is a rear perspective view illustrating a speaker unit according to an embodiment of the present invention, and FIG. 7 is a cross-sectional view illustrating a speaker unit according to an embodiment of the present invention .

1 to 7, a speaker unit 100 includes a coil 110, an armature 120, a drive rod 130, a magnet 130, A core 150, a diaphragm 160, a housing 170, a terminal 180, and a damper 190.

The coil 110 is disposed on one side of the armature 120 in a configuration for generating a magnetic field through a current.

The armature 120 is magnetized by a magnetic field generated through the coil 110, and may be provided as a magnetic body.

The drive rod 130 is vertically coupled to the armature 120 at one side and may be integrally provided with the armature 120 according to the embodiment.

The magnet 140 is installed in the armature 120 to generate a magnetic field and includes a first magnet 140a and a second magnet 140b.

The core 150 is configured to accommodate the magnets 140 and has a receiving space for accommodating the first magnet 140a and the second magnet 140b respectively and the first magnet 140a and the second magnet 140b, The magnet 140b is spaced apart by a predetermined distance and the armature 120 is positioned between the first magnet 140a and the second magnet 140b. As a result, the armature 120 vibrates in cooperation with the first magnet 140a and the second magnet 140b, and the drive rod 130 coupled with the armature 120 vibrates together.

The armature 120 may be configured to include a first armature portion 121, a protrusion portion 122 and a second armature portion 123 to vibrate in cooperation with the magnet 140, The configuration will be described with reference to the following.

The first armature part 121 is provided with a coil 110 and a magnet 140. The first armature part 121 is disposed between the first magnet 140a and the second magnet 140b, As shown in Fig.

The protrusion 122 protrudes from one end of the first armature portion 121 provided with the magnet 140 and is vertically coupled to one side of the drive rod 130. [ 3, since the drive rod 130 is vertically coupled to the protrusion 122 and is coupled to one side of the diaphragm 160, the drive rod 130 is positioned at the center of the armature 120, Interference with the core 110 and the core 150 can be avoided.

The second armature part 123 is formed to extend from the other end of the first armature part 121 provided with the coil 110 and is positioned between the coil 110 and the core 150 and the diaphragm 160.

As shown in FIG. 3, a portion I is formed at one end of the second armature 123 in a direction opposite to the direction in which the protrusion 122 protrudes.

The diaphragm 160 is configured to include a vibration portion 161 attached to the other side of the drive rod 130 and vibrated by the drive rod 130 and a film portion 162 attached to the vibration portion 161, A load hole 163 through which the drive rod 130 can penetrate is formed.

Here, the vibration unit 161 is configured to generate sound through vibration, and is preferably provided in the form of a thin film of a metal material, which is a non-magnetic material.

The side surface of the film portion 162 may be provided in the form of a film adhered to the inner surface of the housing 170 and may be attached to the vibration portion 161 and may include a vibrating portion 161 vibrating together with the vibrating portion 161 And an attachment portion 162b that is formed to extend from the outer periphery of the vibrating portion 162a and attached to the inner surface of the housing 170. [

The housing 170 is configured to protect the above-described components, and may include a lower housing 170a and an upper housing 170b.

The lower housing 170a is configured such that the coil 110, the armature 120, and the core 150 are housed.

As shown in FIG. 5, at least two fixing steps T are formed on the inner bottom surface of the lower housing 170a. The lower housing 170a is accommodated in the lower housing 170a through the fixing step T, So that the position of the core 150 can be stably fixed.

At least one through hole H is provided on the bottom surface of the lower housing 170a so that the through hole H can be joined to the bottom surface of the core 150 and the inner bottom surface of the lower housing 170a, (Welding) work path or work space.

The position of the core 150 housed in the lower housing 170a can be more stably fixed by the joining means through the fixing step T formed in the lower housing 170a and the through hole H So that the coil 110, the armature 120, and the magnet 140 can also be fixed in the lower housing 170a.

As shown in FIG. 3, the attachment portion 162b of the film portion 162 is attached to the inner side surface of the upper housing 170b so that the diaphragm 160 is attached to the lower housing 170a. And is coupled with the lower housing 170a while being attached inside.

5, an acoustic hole AH is formed on one side of the upper housing 170b. The acoustic hole AH is formed by vibration of the diaphragm 160 in the housing 170 And outputs the generated sound to the outside.

2, a separate bonding portion B is provided at the periphery of the rod hole 163 at one side of the bottom surface of the diaphragm 160 so that the upper housing 170b and the lower housing 170a are coupled to each other The drive rod 130 can be attached to the diaphragm 160.

That is, since the upper housing 170b and the lower housing 170a are coupled with the diaphragm attached to the inner surface of the upper housing 170b, the drive rod 130 is attached to the lower surface of the diaphragm 160 It is preferable that the to-be-bonded portion B is provided at the periphery of the rod hole 163 which is one bottom surface of the diaphragm 161. The second armature part 123 is provided at one end of the second armature part 123 and at the other end of the bonding part B or the second armature part 122, Interference with the drive rod 130 can be avoided.

4, it is preferable that the attachment portion 162b of the film portion 162 is attached to the inner surface of the lower housing 170a or the upper housing 170b. More specifically, referring to FIG. 4, The first area 162ba of the diaphragm 160 can be stably attached to the inside of the housing 170 by being attached to the inner surface of the upper housing 170b. The second region 162bb of the attachment portion 162b is inserted and attached between the lower housing 170a and the upper housing 170b to thereby stably place the diaphragm 160 inside the housing 170 .

The diaphragm 160 is attached to the inner surface of the lower housing 170a or the upper housing 170b so that the diaphragm 160 is attached to the inner surface of the upper housing 170b Since the speaker unit can be manufactured by combining the lower housing 170a and the upper housing 170b, it is possible to easily manufacture the speaker unit, simplify the manufacturing process, and provide ease of operation.

In addition, since the film portion 162 is attached to the inner surface of the upper housing 170b or the lower housing 170a, the present invention requires a separate structure for attaching or fixing the diaphragm 160 to the inside of the housing 170 The speaker unit can be miniaturized and can be utilized in various electronic apparatuses.

The terminal 180 is configured to apply a current to the coil 110 and may be provided in the form of a flexible printed circuit board (FPCB). 4, the terminal 180 is electrically connected to the coil 110 inside the lower housing 170a, and penetrates through one side of the lower housing 170a to receive external power And may be provided with a structure exposed to the outside. To this end, a terminal hole TH is formed in the housing 170 to expose a part of the terminal 180 to the outside.

Here, the terminal hole TH is preferably provided on the other side (rear surface) of the housing 170 opposite to the acoustic hole AH formed on one side (front surface) of the housing 170, The hole (TH) is preferably provided on the other side of the lower housing (170a).

7, the terminal 180 is extended from a connection portion 181 and a connection portion 181 that are located inside the lower housing 170a and are electrically connected to the coil 110, And an exposed portion 182 that is exposed to the outside of the lower housing 170a through a terminal hole TH formed on the other side of the lower housing 170a in order to be applied.

Here, the first pattern portion 181a of conductive material may be provided on one side of the connection portion 181 through soldering, and the first pattern portion 181a is electrically connected to the coil 110. [ The exposed portion 182 may be formed by soldering a second pattern portion 182a of a conductive material electrically connected to the first pattern portion 181a on one side of the exposed portion 182. Through the second patterned portion 182a, External power can be applied.

The damper 190 is configured to be coupled to the damping hole P formed in the housing 170 to adjust the damping. 5 and 6, the damping hole P is formed on the other side of the housing 170 opposite to the acoustic hole AH formed on one side of the housing 170 so that sound can pass therethrough. And is more specifically formed on the other side of the lower housing 170a. That is, the damping hole P and the terminal hole TH are formed through the other side surface of the lower housing 170.

Since the damper 190 can effectively control the internal pressure generated through the vibration of the diaphragm 160 in the housing 170 without being separately added by the position where the damping hole P is formed, The sound outputted through the hole AH can be variously adjusted.

In one further embodiment, the damping hole P may be designed so that the diameter of the opening formed therein is constantly changed so that the damping hole P itself can perform the damper function without the damper 190 have.

As described above, the terminal 180 of the present invention exposes only a minimum configuration (exposed portion) to the other side (rear surface) of the housing 170 opposite to the acoustic hole AH formed on one side of the housing 170 And the damping hole P and the damper 190 can be provided on the rear surface of the housing 170. Therefore, The vibration of the diaphragm 160 in the vibration plate 170 can be efficiently controlled.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. And the scope of the present invention should be understood as the scope of the following claims and their equivalents.

100: Speaker unit
110: Coil
120: amateur
121: first armature part 122: protrusion
123: 2nd amateur part
130: Drive load
140: magnet
150: Core
160: diaphragm
161:
162:
162a: vibration part 162b: attachment part
163: Road hole
170: Housing
170a: Lower housing
T: Fixed step H: Through hole
P: Damping hole TH: Terminal hole
170b: upper housing
AH: Acoustic hole
180: Terminal
181: Connection
181a: first pattern portion
182:
182a: second pattern portion
190: damper

Claims (6)

As a speaker unit,
A coil for generating a magnetic field through an electric current;
A terminal electrically connected to the coil to receive external power;
An armature provided with the coil and magnetized by a magnetic field generated through the coil;
A drive rod having one side vertically coupled to the armature;
A magnet for generating a magnetic field in a part of the armature;
A diaphragm including a vibrating part to which the other side of the drive rod is attached and vibrated by the drive rod and a film part to be attached to the vibrating part; And
And a housing for protecting the coil, the terminal, the drive rod, the magnet and the diaphragm from the outside, wherein an acoustic hole is formed on one side of the diaphragm,
The housing has a damping hole formed on the other side thereof for damping control and a terminal hole formed on the side thereof such as a position where the damping hole is formed,
The speaker unit includes:
And a damper coupled to the damping hole formed in the housing for adjusting the damping.
Speaker unit.
delete A coil for generating a magnetic field through an electric current;
A terminal electrically connected to the coil to receive external power;
An armature provided with the coil and magnetized by a magnetic field generated through the coil;
A drive rod having one side vertically coupled to the armature;
A magnet for generating a magnetic field in a part of the armature;
A diaphragm including a vibrating part to which the other side of the drive rod is attached and vibrated by the drive rod and a film part to be attached to the vibrating part;
A housing for protecting the coil, the terminal, the drive rod, the magnet and the diaphragm from the outside, wherein acoustic holes are formed on one side of the diaphragm to generate sound generated by the vibration of the diaphragm; And
And a damper coupled to the housing for damping control,
Wherein the housing is provided with a damping hole formed on the other side for damping control, and the damper is coupled to a damping hole formed in the housing
Speaker unit.
delete The method according to claim 1,
Wherein the damping hole and the terminal hole are formed on a side of the housing opposite to the acoustic hole formed on one side of the housing
Speaker unit.
The method according to claim 1,
The terminal comprises:
A connecting portion located inside the housing and electrically connected to the coil; And
And an exposed portion extending from the connection portion and exposed to the outside of the housing through the terminal hole for receiving external power.
Speaker unit.

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