KR101236082B1 - Earphone - Google Patents

Abstract

PURPOSE: An earphone in which two speaker units are arranged inline in one earphone case in a back and forth direction for suppressing the expansion of the diameter of the earphone case is provided to give an simple connection structure by physically and electrically combining two speaker units in one earphone case. CONSTITUTION: An earphone(1) includes an earphone case, a back speaker unit(3) and a front speaker unit(4). The earphone case includes a front case(2a) and a back case(2b). An emission aperture(21) for sound emission is formed on the front surface of the front case. A silicon cap(22) is covered over the emission aperture. The rear of the front case is combined with the back case. Each of the front case and the back case is formed by injection molding of a plastic material. The front case and the back case have a holding space(24) of a fixed size which is formed on the inside by combining the front case and the back case.

Description

Earphones {Earphone}

The present invention relates to an earphone, and more particularly, to an earphone which is provided with two speaker units in one earphone case to obtain excellent sound quality in all sound ranges.

Earphones (Earphone) is a small sound generating device used by inserting into the user's ear. These earphones are used by inserting them into the ear so that the sound emitted from the speaker unit installed in the earphone case is transferred directly into the ear of the user.

Since the earphone of the speaker unit is not radiated to the air, it is widely used in portable communication devices mainly because it does not cause harm to people in the process of listening to the sound.

Typically, one earphone unit is installed in the earphone case. The speaker unit accommodates a vibrometer and a magnetic circuit inside a cylindrical frame. Generally, the vibrometer consists of a diaphragm and an edge, and the magnetic circuit consists of a magnet, a yoke and an upper plate.

And the earphone case, made of a size that can accommodate the speaker unit, one side is made of a cylindrical of a constant diameter to be inserted into the user's ear. And at one end of the earphone case there is formed a radiating hole for emitting sound emitted from the speaker unit to the outside.

As shown in FIG. 11, the conventional earphone installs one speaker unit 800 inside the earphone case. Therefore, the sound emitted from one speaker unit 800 is transmitted to the user's ear through the spinneret. By the way, all the speaker unit 800 is different from each other in the optimum range according to the size and shape. In other words, some speaker units have excellent bass characteristics, but have high treble characteristics, while others have excellent treble characteristics, but have low bass characteristics. In other words, it is impossible to improve the characteristics of all the bands with one speaker unit. Therefore, as in the related art, the conventional earphone using only one speaker unit 800 has a problem in that excellent sound quality is not obtained in all sound ranges.

Therefore, in recent years, in order to further improve the sound quality of earphones, earphones having two speaker units installed in one earphone case have been developed. As such, when two speaker units having excellent characteristics in different sound ranges are installed in one earphone case, the sound emitted from the two speaker units is transmitted to the user's ears through the radiator of the earphone case. Excellent sound quality can be obtained. In other words, to improve the sound quality of the earphones by installing two speaker units in one earphone case so that the characteristics of all the low bands, such as low, mid and high ranges, are excellent.

However, since the earphone should be able to be inserted into the user's ear basically and should allow daily activities in the inserted state, it is difficult to install two speaker units in one earphone case in terms of space. In addition, since the sound emitted from the two speaker units may collide or interfere with each other, there is a difficulty to solve such a problem.

That is, the simplest method of installing two speaker units in one earphone case is to install two speaker units side by side in the vertical direction. That is, the sound emitted from the two speaker units are emitted side by side so that no sound interference or collision occurs between the two speaker units. However, this method has a very simple design, but because the diameter of the earphone case is large, it is difficult to wear or to operate the earphone. On the contrary, the method of installing two speaker units in front and rear lines has an advantage of reducing the diameter of the earphone case, but there is a problem that sounds emitted from the two speaker units collide with each other or cause interference.

Accordingly, there is a demand for developing earphones that can solve these problems and provide optimal sound quality.

The present invention is to solve the problems of the prior art, the main object of the present invention is to provide an earphone having two speaker units in one front and rear line in one earphone case so as not to increase the diameter of the earphone case.

In addition, the present invention is to provide two earphone units in one earphone case in a front and rear line, but to provide earphones so that the sound emitted from the two speaker units do not interfere or interfere with each other to distort the sound.

In addition, the present invention provides an earphone that simplifies the manufacturing process of the earphone by facilitating physically coupling or electrically connecting two speaker units installed in one earphone case.

As a means for achieving the above object of the present invention, the earphone according to the present invention,

An earphone case formed with a spinneret for sound emission in front;

A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;

It is characterized in that it comprises a front speaker unit which is spaced apart at a predetermined distance in front of the rear speaker unit so as to emit sound toward the spinneret of the earphone case and fixed at a distance from the inner surface of the earphone case. do.

The present invention further comprises a coupling means for fixing the front speaker unit and the rear speaker unit to each other.

In addition, the present invention further comprises a connecting means for electrically connecting the front speaker unit and the rear speaker unit.

In the earphone according to the present invention, since two speaker units are installed in a single earphone case in front and rear lines, the diameter of the earphone case does not increase and the sound emitted from the two speaker units does not interfere with each other or cause a collision. It is effective to get excellent sound quality.

In addition, the present invention has the effect of simplifying the manufacturing process of the earphone to improve the production efficiency by making it easy to physically combine or electrically connect two speaker units installed in one earphone case.

1 is a cross-sectional view showing an embodiment of an earphone having two speaker units installed in a line in front and rear in one earphone case according to the present invention;
2 is a cross-sectional view showing an example of a micro speaker applied to the earphone according to the present invention;
Figure 3 is an embodiment of the coupling means according to the invention, in particular a perspective view showing the structure of a connector installed between the front speaker unit and the rear speaker unit,
4 is a perspective view showing another embodiment of a connector according to the present invention;
5 is a perspective view showing another embodiment of the coupling means according to the present invention, in particular, a plurality of spacers are installed in the front speaker unit,
Figure 6 is a further embodiment of the coupling means according to the invention, in particular a perspective view showing an example in which a plurality of fixing bars are installed in the rear speaker unit,
7 is a perspective view illustrating an example in which a cylindrical portion is formed in each of the front speaker unit and the rear speaker unit according to another embodiment of the coupling unit according to the present invention;
8 and 9 are a perspective view and a combination view showing a flexible circuit board as a connecting means according to the invention,
10 is a sectional view showing an earphone provided with a fixing means according to the present invention;
11 is an exploded perspective view showing an earphone according to the prior art.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the configuration and operation of the earphone having two speaker units installed in a single earphone case in front and rear in accordance with the present invention.

First, as shown in FIG. 1, the earphone 1 according to the present invention comprises an earphone case 2, a rear speaker unit 3, and a front speaker unit 4.

The earphone case 2 forms the size and shape of the earphone, and is usually made of a front case 2a and a rear case 2b.

The front case 2a is formed with a spinneret 21 for sound emission in the front, and a silicone cap 22 is covered around the spinneret 21. And the rear of the front case (2a) is opened to be able to engage with the rear case (2b).

And the rear case (2b) is opened in front of the w to be coupled to the front case (2a), the rear is provided with a cable (6) for receiving an electrical signal from the outside.

At this time, the front case (2a) and the rear case (2b) is made by injection molding each of the plastic material, the front case (2a) and the rear case (2b) by combining the front and rear each other back and forth with each other accommodating space (24) ).

The rear speaker unit 3 and the front speaker unit 4 are installed in front and rear rows in the accommodation space 24 of the earphone case 2. Preferably, the rear speaker unit 3 and the front speaker unit 4 are installed in the inner accommodating space 24 of the front case 2a, and the rear case 2b is coupled and sealed.

The earphone case 2 is made of a substantially cylindrical shape, the front is small in diameter so that the front can be inserted into the ear of the user, and the rear is made larger than the diameter of the speaker unit to install two speaker units.

At this time, the rear speaker unit 3 and the front speaker unit 4 installed in the earphone case 2 are ordinary micro speakers.

Referring to FIG. 2, the micro speaker 60 includes a cylindrical frame 61 having a predetermined size, a vibrometer and a magnetic circuit installed inside the frame 61. The vibrometer includes a diaphragm 67 having an outer circumferential end bonded to the frame 61 to generate sound, and a voice coil 66 fixed to the lower surface of the diaphragm 67 to generate electric force according to an electric signal applied from the outside. ) The magnetic circuit consists of a lower plate (or yoke) 63, a magnet 64, and an upper plate 65.

An air gap G is formed between the lower plate 63 and the magnet 64, and the voice coil 66 is installed to be located in the air gap G. Therefore, when an electrical signal is applied from the outside, the voice coil 66 vibrates by the interaction between the electric force generated in the voice coil 66 and the magnetic force formed in the magnetic circuit, and the voice coil 66 Sound is generated when the diaphragm 67 is shaken by vibration.

And the front plate 93 is installed on the front of the cylindrical frame 61, the rear plate 94 is installed on the back. In addition, the front plate 93 is provided with one or a plurality of sound emitting holes 91 for emitting the sound generated by the vibration of the diaphragm 67 to the front. In addition, the rear plate 94 may be provided with a back sound hole 95 for discharging the sound pressure generated by the vibration of the diaphragm 67 to the rear.

Preferably, the rear speaker unit 3 and the front speaker unit 4 are micro speakers having optimum sound quality in different sound ranges. For example, the rear speaker unit 3 is a micro speaker with excellent low and mid range characteristics, and the front speaker unit 4 is a micro speaker with high high frequency characteristics. In other words, the rear speaker unit 3 is a speaker having a larger diameter of the frame 61 and the diaphragm 67 than the front speaker unit 4, and conversely, the front speaker unit 4 is the rear speaker unit 3. The diameter of the frame 61 and the diaphragm 67 is large compared with ().

In addition, the rear speaker unit 3 has a back sound hole 95 formed in the rear plate 94, but the back sound hole 95 is not formed in the rear plate 94 of the front speaker unit 4. In addition, the rear speaker unit 3 and the front speaker unit 4 may be further provided with a damper for suppressing the sound or sound pressure emitted in the sound emitting hole 91 and the harmonic hole (95). Here, the damper is to adjust the characteristics of the sound emitted from the rear speaker unit 3 and the front speaker unit 4, the screen is made of fiber, synthetic resin, plastic, or the like. If the screen is installed in the sound emitting hole 91 and the harmonic hole 95, the band of sound emitted from the speaker unit can be adjusted.

The rear plate 94 is provided with a connection terminal 68 for applying an external electrical signal to the voice coil 66. The connection terminal 68 is composed of a + terminal and a-terminal.

 Referring back to Figure 1, the earphone 1 of the present invention is fixed to the rear speaker unit 3 in close contact with the inner peripheral surface of the front case (2a). The front speaker unit 4 is fixed to the front of the rear speaker unit 3. As described above, the earphone 1 of the present invention is fixed to the inner circumferential surface of the earphone case 2 of the rear speaker unit 3, and the front speaker unit 4 is fixed to the front of the rear speaker unit 3. It is done.

In this case, the outer circumferential surface of the rear speaker unit 3 is fixed in close contact with the fixing part 26 formed on the inner circumferential surface of the earphone case 2, and the front speaker unit 4 has a separate coupling means 5. It is fixed to the front of the rear speaker unit (3) through. At this time, the fixing part 26 is a protrusion formed integrally with the inner circumferential surface of the front case 2a.

As described above, the earphone 1 according to the present invention is installed between the rear speaker unit 3 and the front speaker unit 4 so that the front speaker unit 4 which is not fixed to the earphone case 2 is connected to the rear speaker unit 3. It characterized in that it comprises a coupling means (5) for fixing to).

Hereinafter, the coupling means 5 for fixing the front speaker unit 4 to the front of the rear speaker unit 3 fixed to the inner circumferential surface of the earphone case 2 will be described. However, those skilled in the art will easily conceive a modification of fixing the front speaker unit 4 to the inner circumferential surface of the earphone case 2 and the rear speaker unit 3 behind it after seeing the configuration of the present invention. Could be. Therefore, it is revealed that such modifications belong to the scope of the rights described in the claims of the present invention. However, in order to describe the description briefly, detailed embodiments thereof will be omitted.

On the other hand, the earphone 1 of the present invention so that the sound emitted from the rear speaker unit 3 can be smoothly discharged to the radiation port 21 of the earphone case 2 and the front speaker unit 3 and the front speaker A constant gap D1 is formed between the units 4, and a constant gap D2 is also formed between the front speaker unit 4 and the inner circumferential surface 23 of the earphone case 2.

That is, the earphone 1 according to the present invention is installed so as to emit sound toward the earphone port 2 and the earphone port of the earphone case 2 is formed with a spinneret 21 for emitting sound in front of the earphone case ( 2) the rear speaker unit (3) fixed in close contact with the inner circumferential surface of the rear speaker unit and a predetermined distance from the front of the rear speaker unit is installed to emit sound toward the radiation port of the earphone case and the inner surface of the earphone case It comprises a front speaker unit (4) which is fixed at a distance from the.

In addition, the earphone 1 according to the present invention is fixed from the rear speaker unit 3 fixed to the inner circumferential surface of the earphone case 2, and from the inner surfaces of the rear speaker unit 3 and the earphone case 2; It further comprises a coupling means (5) for fixing to the front speaker unit (4) and the rear speaker unit (3) spaced apart (D1, D2).

The coupling means 5 is a means for fixing the front speaker unit 4 to the rear speaker unit 3 without significantly deforming the frame 61 of the front speaker unit 4 and the rear speaker unit 3. In the meantime, a separate connector is provided to be coupled to each other, and a shape of the frame 61 of the front speaker unit 4 and the rear speaker unit 3 is modified to be coupled to each other using the same.

The former has the advantage of using a conventional speaker unit in the market without deforming the frame of the speaker unit as it is, but the installation space is increased and the number of parts is increased because a separate connector must be installed. On the other hand, the latter can be made compact and has a simple structure, but there is a disadvantage in that the initial investment costs are increased because a speaker unit having a specific type of frame must be manufactured separately.

Hereinafter, various embodiments of the coupling means 5 according to the present invention will be described with reference to the accompanying drawings. First, FIG. 3 shows an example in which a separate connector 50 is installed between the front speaker unit 4 and the rear speaker unit 3.

As shown in the drawing, the connector 50 is installed between the front speaker unit 4 and the rear speaker unit 3 and its outer circumferential surface is fixed to the inner circumferential surface of the earphone case 2. At this time, the front speaker unit 4 is a micro speaker smaller in diameter than the rear speaker unit 3.

The connector 50 has a ring shape, and includes a rear ring 53 for fixing the rear speaker unit 3, a front ring 54 for fixing the front speaker unit 4, and the front. The ring 54 and the rear ring 53 are integrally connected to each other, and a constant distance D1 is formed between the front speaker unit 4 and the rear speaker unit 3 and the front speaker unit 4 and the earphones are formed. It is composed of a plurality of bridges 55 protruding a predetermined length forward to form a predetermined distance (D2) between the case (2). Preferably, the bridge 55 is formed in a shape bent in a '-' shape, a plurality of radially formed. A through portion 57 is formed between the bridges 55. The front ring 54 also has a smaller diameter than the rear ring 53. Thus, a constant distance D2 is formed between the front speaker unit 4 and the rear speaker unit 3 and between the front speaker unit 4 and the earphone case 2.

Therefore, the outer circumferential surface of the frame 61 of the rear speaker unit 4 is closely attached to the inner circumferential surface of the rear ring 53, and the outer circumferential surface of the rear ring 53 is connected to the inner circumferential surface of the earphone case 2. Tightly fixed. The outer circumferential surface of the frame 61 of the front speaker unit 4 is in close contact with the inner circumferential surface of the front ring 54. In this case, the front speaker unit 4 and the rear speaker unit 3 may be fixed to the connector using magnetic force of the speaker unit without using an adhesive separately. Accordingly, by using the coupling means 5 made of the connector 50, the rear speaker unit 4 or the earphone case to the front speaker unit (3) which is a certain distance away from the inner peripheral surface of the earphone case (2) It can be fixed to the inner peripheral surface of (2).

Therefore, in the present embodiment, the rear speaker 53 of the connector 50, the rear speaker unit 3 and the front ring 54, the front speaker unit 4 is installed, respectively, the connector ( By attaching 50 to the inner circumferential surface of the earphone case 2, the rear speaker unit 3 and the front speaker unit 4 can be installed in the front and rear rows in the earphone case 2.

In addition, between the rear speaker unit 3 and the front speaker unit 4 is spaced a predetermined distance (D1) by the bridge 55, the sound emitted from the rear speaker unit 3 is the front speaker unit (4) It radiates smoothly without being disturbed. In addition, a constant distance D2 is formed between the front speaker unit 4 and the inner circumferential surface of the earphone case 2 so that sound emitted from the rear speaker unit 3 is not disturbed by the earphone case 2. It radiates smoothly. That is, the intervals D1 and D2 serve as passages through which the sound emitted from the rear speaker unit 3 moves.

As described above, the earphone 1 of the present invention is smoothly radiated to the spinneret 21 of the earphone case 2 without the sound of the rear speaker unit 3 being disturbed by the front speaker unit 4. The sound radiated from the unit 3 and the sound radiated from the front speaker unit 4 are complemented to each other so that the sound quality of all the bands can be excellently realized.

4 shows another embodiment of the earphone according to the present invention, a separate connector is installed between the front speaker unit 4 and the rear speaker unit 3, but the rear speaker unit 3 is one side. This is a case where a speaker is used and the front speaker unit 3 uses a frame 61 manufactured separately.

The connector 150 has a cylindrical shape, and includes a rear cylindrical portion 152 for fixing the rear speaker unit 3 and a front hook portion 154 for fixing the front speaker unit 4. Is done. The rear cylindrical portion 152 has a cylindrical shape in which the outer circumferential surface of the frame 61 of the rear speaker unit 3 is inserted, and the outer circumferential surface thereof may be in close contact with the inner circumferential surface of the earphone case 2. Is made in the form of. The front hook portion 154 includes a plurality of hooks 157 protruding a predetermined length forward from the front plate 156 formed on the front surface of the cylindrical portion 152. The plurality of hooks 157 are formed to be in close contact with and fixed to the outer circumferential surface of the front speaker unit 3. For example, the hook 157 is composed of four hooks 157a, 157b, 157c, and 157d, and the hooks 157a, 157b, 157c, and 157d are formed with a vertical portion 158 having an arcuate cross section. The protrusion 159 is formed to engage the front surface of the front speaker unit 3. Four hooks 157a, 157b, 157c, and 157d are arranged in a circle so as to surround the cylindrical front speaker unit 4. At this time, the circle formed by the four hooks (157a, 157b, 157c, 157d) has a size smaller than the diameter of the rear cylindrical portion (152). On the other hand, the front plate 156 formed on the front of the rear cylindrical portion 152 is formed with an opening 151 so that the sound emitted from the rear speaker unit 3 can be radiated to the outside.

In addition, a seating groove 143 in which the hook 157 is seated may be formed in the frame 61 of the front speaker unit 4. The seating groove 143 secures the hook 157 more firmly and prevents the front speaker unit 4 from rotating.

Therefore, in the present embodiment, by inserting and fixing the normal rear speaker unit 3 to the rear cylindrical portion 152 of the connector 150, by inserting the front speaker unit 4 into the front hook portion 154 After fixing, if the connector 150 is fixed to the inner circumferential surface of the earphone case 2, the rear speaker unit 3 and the front speaker unit 4 may be installed in the earphone case 2 in front and rear lines. In addition, a sound emission passage at regular intervals D1 and D2 is formed between the rear speaker unit 3 and the front speaker unit 4 and between the front speaker unit 4 and the earphone case 2 so that the rear speaker The sound radiated from the unit 3 can be radiated smoothly without being disturbed.

5 and 6 show still another embodiment of the earphone according to the present invention. As shown in the drawings, the embodiments of the present invention may modify the shape of the frame 61 of the front speaker unit 4 or the rear speaker unit 3 so that the two speaker units can be installed in front and rear lines.

First, FIG. 5 is integrally formed with a plurality of spacers 33 protruding a predetermined length outward from the rear surface of the frame 61 of the front speaker unit 4. In addition, a plurality of coupling grooves 34 into which the ends of the spacers 33 formed in the front speaker unit 4 are inserted are formed in the front plate 93 of the frame 61 of the rear speaker unit 3. . At this time, the depth of the coupling groove 34 is formed thinner than the protruding length of the spacer 33. The plurality of spacers 33 are spaced apart at regular intervals.

Therefore, when the spacer 33 of the front speaker unit 4 is coupled to the coupling groove 34 of the rear speaker unit 3, the front speaker unit 3 and the rear speaker unit 4 are fixed to each other and the front A constant distance D1 is formed in the speaker unit 4 and the rear speaker 3. Since the outer circumferential surface of the front speaker unit 4 is smaller than the inner circumferential surface of the earphone case 2, a constant distance D2 is formed between the front speaker unit 3 and the inner circumferential surface of the earphone case 2. The sound radiated from the rear speaker unit 3 can be radiated smoothly without being disturbed.

And, Figure 6 shows another embodiment of the earphone according to the present invention, in particular extending a certain length in front of the front plate 93 of the rear speaker unit 3 and the outer peripheral surface of the front speaker unit 4 A plurality of fixing bars 133 disposed to be wrapped are integrally formed. At this time, the front speaker unit 4 is a normal micro speaker. The plurality of fixing bars 133 are spaced apart from each other by a predetermined interval, and a protrusion 136 is formed at a lower end of the fixing bar 133 in contact with the rear plate 94 of the front speaker unit 3. And the sound discharge port 91 is formed in the front plate 93 of the rear speaker unit (4).

Accordingly, when the front speaker unit 4 is inserted between the fixing bars 133 formed integrally with the front plate 93 of the rear speaker unit 3, the front speakers are fixed by the elasticity of the fixing bars 133. The unit 3 and the rear speaker unit 4 are fixed at the same time, and a constant distance D1 is formed in the front speaker unit 4 and the rear speaker 3. And the outer circumferential surface of the rear speaker unit 3 is made of a size that is in close contact with the inner circumferential surface of the earphone case 2 and the front speaker unit 4 is made of a smaller size than the rear speaker unit (3) A predetermined distance D2 is formed between the front speaker unit 3 and the inner circumferential surface of the earphone case 2 so that the sound emitted from the rear speaker unit 3 can be smoothly radiated without being disturbed. Reference numeral 7 is a wire for electrically connecting the front speaker unit and the rear speaker unit.

In addition, Figure 7 shows another embodiment of the earphone according to the present invention, as shown in the front of the rear speaker unit 3, the first cylinder is extended in a certain length in the front and the diameter decreases toward the front A fixing part 255 is formed, and a second cylindrical fixing part 254 is formed on the rear surface of the front speaker unit 4 extending a predetermined length to the rear.

In this case, an opening 251 is formed at the front end of the first cylindrical fixing part 255 to which the second cylindrical fixing part 254 is coupled and connected. In addition, a plurality of fixing grooves 257 are formed at the rear end of the second cylindrical fixing part 254 into which the fixing protrusion 256 installed at the outer circumferential edge of the opening 251 is inserted. Therefore, the second cylindrical fixing part 254 of the front speaker unit 4 is inserted into the tip of the first cylindrical fixing part 255 of the rear speaker unit 3 to fix the second cylindrical fixing part 254. When the groove 257 and the fixing protrusion 256 of the first cylindrical fixing part 255 are coupled to each other, the front speaker unit 4 may be installed in front of the rear speaker unit 3. At this time, a cutout 258 having a predetermined size is formed between the fixing grooves 257 of the front speaker unit 4 so that sound emitted from the rear speaker unit 3 can be radiated to the outside.

In addition, the first cylindrical fixing part 255 formed in the rear speaker unit 3 protrudes a predetermined length forward, and can install the front speaker unit 4 having a smaller outer diameter than the rear speaker unit 3. The diameter is made smaller toward the front so that. Therefore, when the second cylindrical fixing portion 254 of the front speaker unit 4 is coupled to the first cylindrical fixing portion 255 of the rear speaker unit 3, the front speaker unit 3 and the rear speaker unit 4 Are fixed to each other and a constant distance D1 is formed in the front speaker unit 4 and the rear speaker 3. When the outer circumferential surface of the rear speaker unit 3 is installed to be close to the inner circumferential surface of the earphone case 2, a constant distance D2 is provided between the front speaker unit 4 and the inner circumferential surface of the earphone case 2. The sound emitted from the rear speaker unit 3 is smoothly radiated without being disturbed.

As described above, the earphone 1 according to the present invention is fixed to the front speaker unit 4 in the front of the rear speaker unit 3 through the coupling means 5 of the various embodiments. A gap D1 is formed between the rear speaker unit 3 and the front speaker unit, and a gap D2 is formed between the front speaker unit 4 and the inner circumferential surface of the earphone case 2, so that the rear speaker 3 ), The sound emitted from the rear speaker unit 3 and the front speaker 4 does not collide with each other by smoothly radiating to the outside through the spinneret 21 of the earphone case 2. Excellent sound quality in the range.

To this end, a connecting means 7 is further provided between the rear speaker unit 3 and the front speaker unit 4. The connecting means 7 serves to electrically connect the front speaker unit 4 and the rear speaker unit 3 in parallel. Therefore, the external electric control signal applied through the cable 6 provided at the rear of the earphone case 2 is simultaneously transmitted to the rear speaker unit 3 and the front speaker unit 4 through the connecting means 7. Will be delivered.

8 and 9, a preferred embodiment of the connecting means 7 is a flexible circuit board bent in a predetermined form. The flexible circuit board 17 electrically connects a connection terminal 68 provided on the rear plate of the front speaker unit 4 and the rear plate of the rear speaker unit 3. To this end, the flexible circuit board 17 has a front connection portion 72 connected to the connection terminal of the front speaker unit 4 on one side and the connection terminal 68 of the rear speaker unit 3 on the other side. And a rear connection portion 74 connected to the back. A bent portion 75 bent in a U shape to surround the rear speaker unit 3 is formed between the front connection portion 72 and the rear connection portion 74. The lower and front surfaces of the rear speaker unit 3 are provided with guides 69 for guiding the flexible printed circuit board 17. At this time, the flexible circuit board 17 is provided with a circuit for connecting the + terminal and-terminal.

Therefore, the flexible circuit board 17 is mounted on the guide portion 69 of the rear speaker unit 3, and then the front speaker unit 4 is coupled to the front of the speaker unit 3 through the above-described coupling means 5. When the flexible circuit board 17 is pressed in a state sandwiched between the front speaker unit 4 and the rear speaker unit 3, a connection terminal formed at the front connection unit 72 is connected to the front speaker unit 4. It is closely connected with the connecting terminal formed on the rear surface. Then, while the rear connection portion 72 of the flexible circuit board 17 is in close contact with the rear surface of the rear speaker unit 3, the connection terminal formed on the rear connection portion 72 is connected to the connection terminal of the rear speaker unit 3 ( 68, the front speaker unit 4 and the rear speaker unit 3 can be electrically connected in parallel.

Then, as shown in FIG. 1, the front speaker unit 4 and the rear speaker unit 3 connected to each other are pushed into the accommodation space 24 of the front case 2a, and the cable drawn out through the rear case 2b. (6) is soldered and connected to the connecting terminal of the rear speaker unit (3). When the rear case 2b is pushed toward the front case 2a to couple the earphone case 2, the earphone 1 according to the present invention is assembled.

On the other hand, as shown in Figure 10, the rear case (2b) may be further provided with a fixing means (8) for pressing and fixing the rear speaker unit (3). The fixing means 8 is composed of a plurality of pressing protrusions 84 provided in the rear case (2b). The pressing protrusion 84 is formed to protrude forward from the rear of the rear case 2b to press the rear of the rear speaker unit 3 in close contact with the inner circumferential surface of the front case 2a.

That is, a fixing part 26 is formed on the inner circumferential surface of the front case 2a to closely contact and fix the rear speaker unit 3, and the rear speaker unit 3 is provided in front of the fixing part 26. The step 27 is formed to prevent this from moving forward any further. In addition, the pressing protrusion 84 is provided with a plurality of coupling hooks 86. The coupling hook 86 may be integrally formed with the pressing protrusion 84 through the connecting plate 85. And at the rear end of the front case (2b) is formed a locking jaw 87 to which the coupling hook 86 is coupled. Accordingly, when the fixing means 8 is pushed forward from the rear of the front case 2a to couple the coupling hook 86 to the front case 2a through the locking jaw 87, the pressure protrusion 84 is described above. ) Presses the rear speaker unit 3 forward to fix the rear speaker unit 3 firmly between the steps 27. In this case, when the tip of the pressing protrusion 84 presses the flexible circuit board 17, the flexible circuit board 17 may be prevented from being separated.

On the other hand, the flexible circuit board 17 has been described as the connecting means 7 for electrically connecting the front speaker unit 4 and the rear speaker unit 3, but as the connecting means 7 according to the present invention. 3 to 5, it is obvious that it is also possible to electrically connect the front speaker unit 4 and the rear speaker unit 3 in parallel using a conventional wire (coated copper wire) 71.

As described above, the earphone 1 according to the present invention has two speaker units installed in one earphone case 2, but two speaker units having different sizes and sound ranges are installed in a line before and after The rear speaker unit (D1, D2) is formed between the rear speaker unit 3 and the front speaker unit 4 and between the front speaker unit 4 and the inner circumferential surface of the earphone case 2, respectively. The sound emitted from 3) is smoothly radiated to the front, and the front speaker unit 4 and the rear speaker unit 3 are electrically connected in parallel to be emitted from the two speaker units 3 and 4. The notes complement each other so that the sound quality is excellent in all ranges, including the high, mid and low ranges.

In addition, the earphone 1 according to the present invention includes a coupling means 5 for fixing the front speaker unit 4 to the front of the rear speaker unit 3 fixed to the earphone case 2, and the front speaker unit (4) and connecting means (7) for electrically connecting the rear speaker unit (3) and fixing means (8) for firmly fixing the rear speaker unit (4), Simplify the assembly process.

As described above with reference to the accompanying drawings for the preferred embodiment of the present invention, the present invention is not limited by the above-described specific embodiments, those of ordinary skill in the art Of course, various forms of modifications and variations are possible within the scope of the technical spirit of the present invention and the claims described below.

1: earphone 2: case
3: rear speaker unit 4: front speaker unit
5: coupling means 6: cable
7: connecting means 8: fastening means
17: flexible circuit board 21: spinneret
22: silicon cap 24: receiving space
33: spacer 34: coupling groove
50, 150: connector 53: rear ring
54: front ring 55: bridge
60: micro speaker 61: frame
63: lower plate 64: magnet
65: upper plate 66: voice coil
67: diaphragm 68: connection terminal
72: front connection 74: rear connection
75: bending portion 84: pressing protrusion
86: coupling hook 91: sound discharge hole
93: front plate 94: rear plate
95: overtone hole 133: fixed bar
136: protrusion 143: seating groove
152: rear cylindrical portion 154: front hook portion
156: front plate 157: hook
225: first cylindrical fixing part 254: second cylindrical fixing part
256: fixing protrusion 257: fixing groove

Claims (16)

An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
It is configured to include a front speaker unit which is spaced apart at a predetermined distance in front of the rear speaker unit to emit sound toward the spinneret of the earphone case and fixed at a distance from the inner surface of the earphone case,
Earphones, characterized in that the back is formed on the rear speaker unit, the rear speaker is not formed on the rear speaker unit. The method of claim 1,
Coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case;
Earphones are provided between the front speaker unit and the rear speaker unit further comprises connecting means for electrically connecting the front speaker unit and the rear speaker unit. delete delete An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
It is configured to include a front speaker unit which is spaced apart at a predetermined distance in front of the rear speaker unit to emit sound toward the spinneret of the earphone case and fixed at a distance from the inner surface of the earphone case,
The rear speaker unit is a micro speaker having a larger diameter than the front speaker unit, and coupling means for fixing the front speaker unit to the rear speaker unit is provided between the rear speaker unit and the front speaker unit.
Earphones, characterized in that the damper for adjusting the sound pressure is further provided in the sound discharge port and the overtones formed in the front and rear plates of the rear speaker unit and the front speaker unit. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
And a coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case.
The coupling means is a earphone, characterized in that the connector having two rings for fixing the disk-shaped rear speaker unit and the front speaker unit, respectively. The method according to claim 6,
The connector connects the rear ring for fixing the rear speaker unit, the front ring for fixing the front speaker unit and the front ring and the rear ring integrally, and a constant distance between the front speaker unit and the rear speaker unit. Is formed and includes a plurality of bridges protruding a predetermined length forward and bent inward so that a predetermined distance is formed between the front speaker unit and the earphone case. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
And a coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case.
The coupling means is a earphone having a cylindrical portion to which the rear speaker unit is inserted and coupled and a connector having a plurality of hooks to fix the outer circumferential surface of the front speaker unit. The method of claim 8,
The connector is formed of a rear cylindrical portion for fixing the rear speaker unit, and a front hook portion for fixing the front speaker unit, wherein the rear cylindrical portion is formed in a cylindrical shape into which the outer circumferential surface of the frame of the rear speaker unit is inserted. The outer circumferential surface is formed in a size and shape that can be in close contact with the inner circumferential surface of the earphone case, the front hook portion is made of a plurality of hooks protruding a predetermined length forward from the front plate formed on the front of the rear cylindrical portion, Earphones characterized in that the plurality of hooks are formed in close contact with the outer peripheral surface of the front speaker unit fixed. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
And a coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case.
The coupling means comprises a plurality of spacers protruding a predetermined length to the rear of the frame of the front speaker unit, and a plurality of coupling grooves formed in the front plate of the rear speaker unit so that the end of the spacer is inserted. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
And a coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case.
The coupling means may include a plurality of fixing bars protruding a predetermined length forward from the front plate of the rear speaker unit and arranged to surround the outer circumferential surface of the front speaker unit, and the rear speaker unit to be connected to the rear plate of the rear speaker unit. Earphones comprising a protrusion formed on the front. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
And a coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case.
The coupling means is formed on the front surface of the frame of the rear speaker unit and extends a certain length in the front and the first cylindrical fixing portion is reduced in diameter toward the front, and installed in the rear of the frame of the front speaker unit and a predetermined length in the rear And a fastening means for fixing an extended second cylindrical fixing part and a rear end of the second cylindrical fixing part to a tip of the first cylindrical fixing part. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
Coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case;
A connection means installed between the front speaker unit and the rear speaker unit to electrically connect the front speaker unit and the rear speaker unit,
The connecting means has a front connection portion connected to a connection terminal of the front speaker unit on one side and a rear connection portion connected to the connection terminal of the rear speaker unit on the other side, and the rear speaker is connected between the front connection portion and the rear connection portion. Earphones, characterized in that the bent portion is formed to surround the unit is a flexible circuit board having a circuit for connecting the + terminal and the-terminal inside. An earphone case formed with a spinneret for sound emission in front;
A rear speaker unit which is installed to emit sound toward the radiation port of the earphone case and is fixed to the inner circumferential surface of the earphone case;
A front speaker unit spaced apart at a predetermined distance from the front of the rear speaker unit so as to emit sound toward the radiator of the earphone case and fixed at a distance from an inner surface of the earphone case;
Coupling means installed between the front speaker unit and the rear speaker unit to fix the front speaker unit to the front of the rear speaker unit fixed to the inner circumferential surface of the earphone case;
Connecting means provided between the front speaker unit and the rear speaker unit to electrically connect the front speaker unit and the rear speaker unit;
The rear of the rear speaker unit includes a fixing means for firmly fixing the rear speaker unit by pressing forward,
The fixing means is provided inside the rear case, a plurality of pressing protrusions for pressing the rear of the rear speaker uni and a plurality of coupling hooks for fixing the pressing protrusions to the front case, and the coupling hook to the front case Earphones characterized in that comprises a locking jaw for fixing to. The method according to any one of claims 6 to 14,
Earphones, characterized in that the back is formed on the rear speaker unit, the rear speaker is not formed on the rear speaker unit. The method according to any one of claims 6 to 14,
Earphones, characterized in that the damper for adjusting the sound pressure is further provided in the sound discharge port and the overtones formed in the front and rear plates of the rear speaker unit and the front speaker unit.

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