KR101494847B1 - Balanced armature unit and manufacturing method thesame - Google Patents

Abstract

The present invention provides a balanced armature unit and a method for manufacturing the same. The method for manufacturing the balanced armature unit includes: a) insert-injection molding an installation member to expose the external contact surfaces and internal contact surfaces of terminals to the outside; b) being combined with an installation member and an operation unit to be integrated and soldering the sides of a coil to the internal contact surfaces respectively; c) being combined with the end of a rod and the end of the upper member of the armature; d) being combined with a vibration plate assembly with the upper side of a lower case; and e) being combined with a radiation hole case and the upper and lower cases. According to the present invention, the present invention can assembly rapidly the balanced armature unit and improve the durability of the balanced armature unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balanced armature unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balanced armature unit and a method of manufacturing the same. More particularly, the present invention relates to a balanced armature unit and a balanced armature unit, Unit.

Generally, a balanced amateur unit includes a coil generating a magnetic field by an electric current, an armature magnetized by a magnetic field generated by a current flowing in the coil, a magnet generating a magnetic field to interact with the magnetized armature, A diaphragm which is vibrated by a rod wire connected vertically to the armature and a rod wire connected to the armature, and upper and lower cases for accommodating the respective components described above.

When a current flows through the coil, a magnetic field is generated and the amateur is magnetized. Magnetized amateurs move because of their interaction with the magnet's magnetic field. The load wire is fixed at one end to the armature and moves like an armature. The diaphragm attached to the other end of the rod wire vibrates according to the movement of the rod wire, and thereby the sound is reproduced.

Such amateur speakers are disclosed in various structures.

As a prior art, an amateur speaker and its manufacturing method are disclosed in Korean Patent No. 10-1297297 (public announcement: 2013.08.14), Korean Patent No. 10-0936261 (public announcement date: 2010.01.12) Earphone is disclosed in Korean Patent No. 10-0935910 (Published on 2010.01.06), and an amateur type speaker and its manufacturing method are disclosed.

However, each of the components for reproducing sound is inserted and assembled into the lower case according to the related art.

Accordingly, it is very difficult to assemble each of the components manufactured in a small size and then insert it into the lower case and then to attach the upper case to the lower case. In addition, A jig for assembling work was required and a PCB terminal for supplying power to the coil had a bond attaching structure so that it was difficult to assemble the assembly and the durability was deteriorated There is a problem.

Korean Patent No. 10-1297297 (public announcement date: 2013.08.14) Korean Patent No. 10-936261 (public announcement date: Jan. 12, 2010) Korean Registered Patent No. 10-0935910 (Notification Date: 2010.01.06)

An object of the present invention is to provide a structure capable of assembling a balanced armature unit quickly and easily, and capable of improving durability, and a manufacturing method thereof.

According to the present invention, the above object can be achieved by providing a semiconductor device comprising: a lower case having an accommodating portion opened upward; A pair of terminal exposing portions which are seated in the terminal exposing recesses so that a part of the terminal exposing portion is exposed to the outside of the lower case is provided on one side and an operating portion including a coil, a magnet, an armature and a yoke is seated on an upper surface, Wherein the terminal exposed portion is insert injection-molded so that only the outer contact surfaces and the inner contact surfaces of the terminals are exposed to the outside, A mounting member inserted into the receiving portion of the housing; A diaphragm assembly installed at a receiving portion of the lower case so as to be located at an upper side of the actuating portion, the end having a rod connected to the armature; An upper case coupled to an upper surface of the lower case; And a radiation hole provided in the other wall of the upper and lower cases, the radiation hole having a radiation hole for radiating sound generated from the diaphragm assembly to the outside.

The yoke may be composed of an upper yoke and a lower yoke formed to receive magnets and an armature, and may be coupled to each other, or may be formed as an integral unit of a hollow shape.

The mounting member may be integrally formed by inserting injection molding of a lower region of the lower yoke or the integral type yoke on one side of the upper surface and a coil receiving portion for mounting the coil on one side.

The outer contact surfaces of the terminal are exposed to the outside of the respective terminal exposed portions, and the inner contact surfaces are insert injection molded so as to be exposed to the upper surface between the terminal exposed portion and the coil, respectively.

The outer contact surfaces of the terminal are respectively exposed to the outside of the respective terminal exposed portions and the inner contact surfaces are insert injection molded so as to be respectively exposed to the upper surface of the end portion opposite to the terminal exposed portion.

A coupling hole for fitting an upper member of the amateur in the shape of "? "Is formed between the terminal exposing portions of the installation member, and a coupling portion for engaging the lower member of the armature is formed on the bottom surface

According to the present invention, there is provided a method for manufacturing a balanced armature unit, comprising the steps of: a) combining a coil and an operating unit composed of a yoke, a magnet and an armature into an integrated state, A pair of terminal exposures which are seated in a terminal exposing recess of the lower case so that a part thereof is exposed to the outside of the lower case, A coil receiving portion for receiving the coil is formed on an upper surface thereof; insert injection-molding the mounting member to expose only outer contact surfaces and inner contact surfaces of the terminals to the outside; b) placing a coil on a coil seating portion of an insert injection molded insert so that the terminals are located inside, and coupling the mounting member and the actuating portion so as to be integrated, and soldering the end portions of the coil to the inner contact surfaces; c) inserting the mounting member integrated with the operating unit into the receiving portion of the lower case, and then coupling the rod end to the end of the upper member of the armature; And d) coupling the diaphragm assembly to the upper surface of the lower case after coupling the diaphragm assembly to the opposite end of the rod when the rod is coupled to the armature, and e) coupling the upper case to the upper surface of the lower case, And joining the radiating hole case to the case. The present invention also provides a method of manufacturing a balanced amateur unit.

In the step a), when the lower yoke of the yoke has a pair of vertical walls, the lower yoke is inserted into the mounting member so that the yoke is integrated with the mounting member, The method may further comprise molding.

The step a) further includes the step of insert injection molding insert injection molding so that the yoke is integrated with the mounting member, when the yoke is formed in a hollow shape, the lower part of the yoke is insert injection molded so as to be integrated with the mounting member .

In the step a), an engaging hole is formed between the terminal exposing portions of the mounting member for engaging the upper member of the armature in the shape of ⊂, and a lower engaging member for engaging the lower member of the armature, Forming an insert by injection molding.

In the step a), the outer contact surfaces of the terminal may be exposed to the outside of the respective terminal exposed portions, and the inner contact surfaces may be insert injection molded so as to be exposed to the upper surface between the terminal exposed portion and the coil.

In the step a), the outer contact surfaces of the terminal are exposed to the outside of the respective terminal exposed portions, and the inner contact surfaces are subjected to insert injection molding so as to be exposed to the upper surface of the end portion opposite to the terminal exposed portion.

This object is achieved according to the invention by a method for manufacturing a balanced armature unit, comprising the steps of: a) assembling an operating part consisting of a coil, a yoke and an armature, and coupling a rod of the diaphragm assembly to an armature; b) inserting the actuating part and the diaphragm assembly into the receiving part of the lower case and engaging them; c) coupling an upper case to an upper surface of the lower case, and coupling a radiating hole case to a side surface of the lower case, wherein the step a) includes the step of: Wherein a pair of terminals for supplying an external power source to the coil are located inside and only the outer contact surfaces and inner contact surfaces of the terminals are exposed to the outside and on one side of the upper surface there is formed a coil seating portion for seating the coil, And an insert injection molding is performed so that a part of the yoke is integrally formed on the other side of the upper surface.

Wherein the step a) is performed in a pair of terminal exposing portions formed on one side of the mounting member so as to be seated in a terminal exposing groove of the lower case so that the outer contact surface is exposed to the outside of the lower case, The mounting member can be insert injection molded so as to be located on the upper surface of the mounting member, on the upper surface between the terminal exposing portion and the coil receiving portion, or at the end portion of the upper surface of the mounting member.

In the step a), when the yoke is divided into an upper yoke and a lower yoke, the lower yoke is insert injection-molded so that the lower yoke is integrated with the mounting member. When the lower yoke is formed as a hollow monolithic structure, Insert injection molding can be performed.

According to the present invention, it is possible to provide an effect that the balanced amateur unit can be assembled quickly and easily.

Further, the assembling work process of the balanced amateur unit can be simplified, and the durability can be improved.

Further, since the actuating part is integrated so as to be integrated by the mounting member, a separate jig for assembling becomes unnecessary.

1 is an exploded perspective view showing a balanced armature unit according to the present invention.
2 is a partially cutaway perspective view showing the installation member shown in Fig.
3 is a perspective view showing the installation member shown in Fig.
FIG. 4 is a perspective view showing a state where the operation unit is coupled to the installation member shown in FIG. 2;
5 is a partially enlarged perspective view showing another position of the inner contact surface shown in Fig.
6A and 6B are perspective views showing another embodiment of the yoke shown in FIG.
7 is a perspective view illustrating a process of manufacturing a balanced armature unit according to the present invention.
8A and 8B are cross-sectional views illustrating a balanced armature unit.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

1 is a partially cutaway perspective view showing a mounting arm shown in Fig. 1, Fig. 3 is a perspective view of a mounting arm shown in Fig. 2, and Fig. Fig. 4 is a perspective view illustrating a state in which the operating unit is coupled to the mounting member shown in FIG.

1 to 4, the balanced armature unit according to the present invention includes a lower case 20 (see FIG. 1) having an accommodating portion 22 opened upward and a pair of terminal exposing recesses 24 formed on one wall And an operating portion 40 composed of a coil 42 and a pair of magnets 44, an armature 46, a yoke 48 and a pair of terminals 49, And a rod 62 having an end connected to the armature 46 so as to be positioned at an upper side of the actuating part 40. The lower case 20 is provided with a mounting member 50, And an upper case 30 coupled to the upper surface of the lower case 20 and a radiation hole 72 for radiating the sound generated from the diaphragm assembly 60 to the outside, And a spinning hole case 70 provided on the other wall of the case 20.

This will be described more specifically.

The lower case 20 is formed so as to receive the installation member 50 having the operation part 40. The lower case 20 has a receiving part 22 opened upward and having a predetermined depth, The exposed grooves 24 are formed to be spaced from each other.

The mounting member 50 is formed by insert injection molding so as to connect the respective constituent elements constituting the actuating part 40 together.

A pair of terminal exposing portions 52 are formed on one side of the lower case 20 so as to be exposed to the outside of the lower case 20. The terminal exposing portion 52 has a coil- A lower yoke 48B constituting a yoke 48 is insert injection molded on the upper surface of the coil seat 54 to form an installation member 50 . On the other hand, on the inside of the mounting member 50, a pair of terminals 49 are injection-molded in the longitudinal direction and integrated with the mounting member 50.

The terminal 49 is for transmitting power to the coil 42. The terminal 49 has an outer contact surface 49A for contacting the outer terminal and an inner contact surface 49B for soldering the lead wire of the coil 42 The outer contact surfaces 49A are exposed to the outside of each terminal exposing portion 52 and the inner contact surfaces 49B are exposed upwardly to the upper surface end of the mounting member 50. [ The outer contact surfaces 49A of the terminal 49 are exposed to the outside of the respective terminal exposed portions 52 and the inner contact surfaces 49B are exposed to the coil seat 42 where the terminal exposed portion 52 and the coil 42 are installed And the upper surface between the upper and lower portions 54, respectively.

5, the inner contact surface 49B may be insert injection-molded so as to be exposed to the upper surface between the terminal-exposed portion 52 and the coil-receiving portion 52. In this case, as shown in Fig.

On the other hand, a coupling hole 55 for fitting the upper member 46A of the armature 46 in the shape of "⊂" is formed between the terminal exposed portions 52 of the installation member 50, And the lower end member 46B of the lower plate 46 is seated and engaged.

The yoke 48 is constituted by an upper yoke 48A and a lower yoke 48B and includes an upper yoke 48A and a lower yoke 48B for accommodating an upper member 46A passing between the magnets 44 and the magnet 44 And a receiving space is formed between the lower portions 48B. The yoke 48 is insert injection-molded so that the lower yoke 48B is integrally formed on one side of the upper surface of the mounting member 50.

However, the present invention is not limited to this, and the lower region of the lower yoke 48B formed in a structure having a pair of vertical walls as shown in FIG. 6A may be insert injection molded into the mounting member 50 6B, and may be insert injection-molded so that the lower region thereof is integrated into one of the upper surfaces of the mounting member 50. As shown in FIG.

The mounting member 50 having this structure is insert injection-molded by providing a pair of terminals 49 for supplying an external power source to the coil 42 with an outer contact surface 49A and an inner contact surface 49B, Since the coil receiving portion 54 is formed on the upper surface of the coil receiving portion 54 so that the coil receiving portion 48 is integrally formed with the mounting member 50, Can be easily performed.

One end of the rod 62 is coupled to the diaphragm 64 and the other end is coupled to the upper member 46A of the armature 46 .

The upper case 30 is coupled to the upper surface of the lower case 20 to cover each component.

The radiation hole case 70 is provided with a radiation hole 72 for radiating sound generated from the diaphragm 64 to the outside as shown in Figs. 8A and 8B, Lt; / RTI >

The balanced armature unit having such a structure performs the role of the jig for integrating the components constituting the operation unit 40 by the installation member 50, so that a separate jig is not required, The mounting member 50 is insert injection-molded so that the pair of terminals 49 and the yoke 48 are integrated so that the PCB for power supply becomes unnecessary and the process of assembling the PCB and the assembly of the yoke 48 It is possible to delete the process.

The manufacturing process of such a balanced amateur unit will be described.

7, a pair of terminals 49 are positioned inside, the outer contact surface 49A is located at the terminal exposing portion 52 and the inner contact surface 49B is located at the end of the terminal contact portion 49. In order to manufacture the balanced armature unit, The mounting member 50 is insert injection-molded so as to be positioned at the upper end portion. At this time, a coil seating portion 54 is formed on the upper surface, and injection molding is performed on the side of the coil seating portion 54 so that the lower yoke 48B is inserted and integrated. The mounting member 50 is injection molded so that a coupling hole 55 is formed in a protruding rib between the coil seating portion 54 and the terminal exposing portion 52.

Since the mounting member 50 which is an injection product is already inserted into the pair of terminals 49 and the lower yoke 48B, the process of assembling the terminal 49 and the lower yoke 48B can be omitted.

Then, the coils 42 are mounted on the coil seating portions 54, and the ends of the coils 42, that is, the lead wires on both sides are soldered to the inner contact surfaces 49B to electrically connect them.

When the coupling of the coil 42 is completed by this process, the upper yoke 48A is coupled to the lower yoke 48B, and a pair of magnets 44 is inserted into the lower yoke 48B.

When the pair of magnets 44 are inserted, the lower end member 46B of the armature 46 is seated in the engaging portion 57 formed on the bottom surface of the attaching member 50, Passes through the coil (55), passes through the coil (42), and is assembled so as to be positioned between the pair of magnets (44).

When the coil 42, the magnet 44, the armature 46 and the upper yoke 48A constituting the actuating part 40 are assembled and integrated through the mounting member 50, (22) of the main body (20) to be seated.

At this time, each of the terminal exposing portions 52 is seated on the pair of terminal exposing grooves 24, respectively. With this process, the outer contact portion 49A is exposed toward the outside.

Then, the end of the rod 62 is engaged with the end of the upper member 46A of the armature 46. [ At this time, the rod 62 may be coupled to the upper member 46A before the installation member 50 is inserted into the lower case 20. [

When the diaphragm assembly 60 is connected to the armature 46, the edge of the diaphragm 64 is seated in the step formed on the inner wall of the inlet of the receiving portion 22 of the lower case 20.

When the diaphragm assembly 60 is coupled to the armature 46 and is seated in the step of the lower case 20 in the above-described procedure, the lower case 20 is attached to the upper case 30 so as to close the receiving portion 22 with the upper case 30. [ (30).

Then, the radiation hole case 70 is coupled to the opposite side of the outer contact portion 49A.

8, the installation member 50 serves as an intermediary for integrating the components constituting the actuating part 40. As shown in FIG. A separate jig for assembling the balanced armature unit becomes unnecessary and the mounting member 50 is insert injection molded so that the terminal 49 and the yoke 48 are integrated with the mounting member 50, And the yoke 48 can be eliminated.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

20: Lower case 22:
24: terminal exposed groove 30: upper case
40: Operation part 42: Coil
44: Magnet 46: Amateur
48: yoke 48A: upper yoke
48B: lower yoke 49: terminal
49A: outer contact surface 49B: inner contact surface
50: mounting member 52: terminal exposing part
54: coil seating part 55: engaging hole
60: diaphragm assembly 62: rod
64: diaphragm 70: radiation hole case
72: radiation hole

Claims (15)

A lower case having a receiving portion opened upward and having a pair of terminal exposing grooves formed on one wall thereof;
A pair of terminal exposing portions which are seated in the terminal exposing recesses so that a part of the terminal exposing portion is exposed to the outside of the lower case is provided on one side and an operating portion including a coil, a magnet, an armature and a yoke is seated on an upper surface, Wherein the terminal exposed portion is insert injection-molded so that only the outer contact surfaces and the inner contact surfaces of the terminals are exposed to the outside, A mounting member inserted into the receiving portion of the housing;
A diaphragm assembly installed at a receiving portion of the lower case so as to be located at an upper side of the actuating portion, the end having a rod connected to the armature;
An upper case coupled to an upper surface of the lower case; And
And a radiation hole formed in the other wall of the upper and lower cases, the radiation hole having a radiation hole for radiating sound generated from the diaphragm assembly to the outside.
Balanced amateur unit. The method according to claim 1,
The yoke
And an upper yoke and a lower yoke formed to receive the magnets and the armature,
Balanced amateur unit. 3. The method of claim 2,
The mounting member
A coil receiving portion for receiving the coil is formed on one side of the upper surface,
And the lower portion of the lower yoke or the integral yoke is insert-molded by injection molding.
Balanced amateur unit. The method according to claim 1,
Wherein the outer contact surfaces of the terminal are exposed to the outside of the respective terminal exposed portions and the inner contact surfaces are insert injection molded so as to be respectively exposed to the upper surface between the terminal exposed portion and the coil.
Balanced amateur unit. The method according to claim 1,
Wherein the outer contact surfaces of the terminal are exposed to the outside of the respective terminal exposed portions and the inner contact surfaces are insert injection molded to be exposed to the upper surface of the end portion opposite to the terminal exposed portion,
Balanced amateur unit. The method according to claim 1,
Wherein an engaging hole is formed between the terminal exposed portions of the mounting member for engaging an upper member of the amateur having a shape of "and an engaging portion for engaging the lower end member of the armature is formed on the bottom face thereof. ,
Balanced amateur unit. A method for manufacturing a balanced armature unit according to any one of claims 1 to 6,
a) a mounting member for coupling an operating part made up of a coil, a yoke, a magnet, and an armature to be integrated with each other, and for coupling the operating part to the receiving part of the lower case, A pair of terminal exposing portions that are seated in a terminal exposing groove of the lower case so that a part thereof is exposed to the outside of the lower case is provided on one side and a coil seating portion for seating the coil is formed on an upper surface thereof, Insert injection molding the mounting member so that only the outer contact surfaces and the inner contact surfaces of the mounting member are exposed to the outside;
b) placing a coil on a coil seating portion of the mounting member so that the mounting member and the operating portion are integrated to each other, and soldering the end portions of the coil to the inner contact surfaces;
c) inserting the mounting member integrated with the operating unit into the receiving portion of the lower case, and then coupling the rod end to the end of the upper member of the armature;
d) coupling the diaphragm assembly to the upper surface of the lower case after coupling the diaphragm assembly to the opposite end of the rod when the rod is coupled to the armature; And
e) coupling the upper case to the upper surface of the lower case, and coupling the radiating hole case to the upper and lower cases.
A method of manufacturing a balanced amateur unit. 8. The method of claim 7,
The step a)
The step of insert injection molding the lower yoke integrally with the mounting member when the lower yoke of the yoke has a structure having a pair of vertical walls is further included in the insert injection molding so that the yoke is integrated with the mounting member Lt; RTI ID = 0.0 >
A method of manufacturing a balanced amateur unit. 8. The method of claim 7,
The step a)
Further comprising the step of insert injection molding insert injection molding so that the yoke is integrated with the mounting member, wherein when the yoke is formed in a hollow shape, the lower region of the yoke is insert injection molded so as to be integrated with the mounting member.
A method of manufacturing a balanced amateur unit. 8. The method of claim 7,
The step a)
An insert hole is formed between the terminal exposed portions of the mounting member to form an engaging hole for engaging an upper member of the amateur in the shape of "and an engaging portion for engaging the lower end member of the armature is formed on the lower surface thereof, ≪ / RTI > further comprising the step of:
A method of manufacturing a balanced amateur unit. 8. The method of claim 7,
The step a)
Wherein the outer contact surfaces of the terminal are exposed to the outside of the respective terminal exposed portions and the inner contact surfaces are subjected to insert injection molding so as to be exposed to the upper surface between the terminal exposed portion and the coil,
A method of manufacturing a balanced amateur unit. 8. The method of claim 7,
The step a)
Wherein the outer contact surfaces of the terminal are respectively exposed to the outside of the respective terminal exposed portions and the inner contact surfaces are subjected to insert injection molding so as to be exposed to the upper surface of the end portion opposite to the terminal exposed portion,
A method of manufacturing a balanced amateur unit. A method for manufacturing a balanced amateur unit,
a) assembling a coil, a yoke and an armature operating part, and coupling the rod of the diaphragm assembly to the armature;
b) inserting the actuating part and the diaphragm assembly into the receiving part of the lower case and engaging them;
c) coupling the upper case to the upper surface of the lower case, and coupling the radiating hole case to the side surface of the lower case,
The step a)
Wherein a pair of terminals for supplying an external power source to the coil are disposed inside and only the outer contact surfaces and the inner contact surfaces of the terminals are exposed to the outside, Wherein a coil receiving portion for receiving the coil is formed on one side of the upper surface and an insert injection molding is formed on the other side of the upper surface so that a part of the yoke is integrated.
A method of manufacturing a balanced amateur unit. 14. The method of claim 13,
The step a)
Wherein the outer contact surface is located at a pair of terminal exposing portions formed on one side of the installation member so as to be positioned in the terminal exposure groove of the lower case so as to be exposed to the outside of the lower case, Wherein the mounting member is insert injection-molded so as to be located on the upper surface between the terminal-exposed portion and the coil seat portion, or at an end portion of the upper surface of the mounting member.
A method of manufacturing a balanced amateur unit. 14. The method of claim 13,
The step a)
When the yoke is divided into an upper yoke and a lower yoke, the yoke is insert injection-molded so that the lower yoke is integrated with the mounting member. When the yoke is formed of a hollow monolithic structure, insert injection molding is performed so that the lower region is integrated with the mounting member As a result,
A method of manufacturing a balanced amateur unit.

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