KR20020057902A - structure of a multi function sounder - Google Patents

Abstract

PURPOSE: A structure of a multi-function electroacoustic transducer is provided to improve a stability of an adhesion state of an air hole screen adhered at an air hole portion of a receiver unit and a durability of the adhesive force against an external force by rendering an upper surface of a case of a speaker formed at a portion with a space to block an open space to a degree so that the outer side of the air hole screen may not directly be in contact with the open space, and prevent introduction and adsorption of an impurity through the air hole screen. CONSTITUTION: The first yoke(130) doubly coupled to the second yoke by a magnet is inserted inside a case(100'). A plurality of air holes(115) are radially formed from an inner side of an annular protrusion formed at an inner side of an upper face of the case(100'), being bent at a certain position to penetrate a speaker(120). An air hole screen(116) is adhered at a lower face of a middle portion of the case(100') with the air hole(115) formed therein. A vibration plate(118) with a coil installed to be vertically moved between the first yoke(130) and the second yoke with the magnet inserted therebetween is adhered at an upper surface of an annular protrusion. A grill(117) is mounted and adhesively fixed at an upper surface of the annular protrusion while being inserted inside the case(100'). A speaker is formed such that the plurality of air holes(121) are formed at a middle portion of the stepped case(100'), a vibration plate with a coil positioned between the first yoke(130) and the second yoke and vertically moved is adhered at a lower inner side of the case(100'), and a grill is insertedly fixed at an inner side of a lower portion of the case(100').

Description

Structure of a multi function sounder

The present invention relates to a structure of a multifunction electroacoustic transducer, and more particularly, to improve the stability of the adhesion state and persistence of the adhesion state of the air hole screen attached to the air hole portion of the receiver, as well as to introduce impurities into the air hole screen. It relates to a structure of a multifunctional electroacoustic transducer to prevent deposition and the like.

In general, a personal portable communication terminal such as a mobile phone or a notebook PC has a built-in multi function device that performs functions such as a buzzer, a speaker, and a receiver having a magnetic circuit to convert sound through a vibration function.

The structure of the multifunctional electro-acoustic transducer 10 as described above is various, but as shown in the accompanying drawings, FIGS. 1 to 4, the inside of the case 10 ′ is separated into upper and lower portions by the yoke 2 13. The multifunction electro-acoustic transducer 10 is configured to have different functions, the air hole 16, 17 to control the internal pressure of the air flow by the vibration of each of the diaphragm 14, 15 on one side Is formed in case 10 'injection molding.

For reference, it is common to attach an air hole screen (not shown) to the air hole 16 of the receiver part 11, which indicates the flow of air moving in and out of the diaphragm 14 of the receiver part 11. This is to control (adjust) to meet the group special mobile characteristics (GSM: characteristics of output flatness) of the receiver which are universally required in Europe.

In the conventional multifunction electroacoustic transducer 10 having a receiver and a speaker function as shown in FIGS. 1 and 2, the air hole 16 of the receiver 11 and the air hole of the speaker 12 17 is formed on the outer circumferential surface of the casing 10 ′, which is narrow and formed in multiple stages. As shown in the drawing, the air hole screen is not attached to the diaphragm 14 of the receiver unit 11 so as to move to the outside. By controlling (regulating) the flow of air, it does not meet the group special mobile characteristics of receivers that are universally required in Europe.

If the air hole screen is attached to the air hole 16 of the receiver part 11, the attachment portion is deeply located inward, and thus it may be very difficult to attach the air hole 16.

3 and 4, the upper surface of the air holes 16 and 17 is formed in other conventional multifunction electroacoustic transducers 10. 17) may be formed on one side, and the forming part may also be formed in multiple stages, and air may be formed in the air hole 16 of the receiver portion 11 so that the receiver portion 11 has an output characteristic having flatness. The air hole screen should be attached to control (adjust) the flow of air, but it is very difficult to attach the air hole screen to the air hole 16 forming part of the casing 10 ', which is made of multiple stages. Since it is close to the air hole 17 of 12), there is a problem in that the air hole screen bonding operation is not easy, and in particular, the air hole 16 of the receiver part 11 should be formed during the case 10 'injection molding. Many difficulties and costs for injection molding The above problems are pointed out.

That is, the receiver part 11 and the speaker part 12 which are located in opposite directions from each other are the air holes 16 which are air flow passages from the inner surface of the space enclosed by the diaphragm 14 and 15 to the outside. (17) should be formed outside, but since the receiver 11 and the speaker 12 face each other, there is no choice but to form two air holes 16 and 17 in either direction. 16), (17) formed part is made of a multi-stage (single layer), not only easy to adhere, but also has a problem that the adhesive strength is not strong, the speaker that requires a smooth air flow in the diaphragm 15, the outside Since the air hole screen should not block the air hole 17 of the speaker unit 12 due to its characteristics, it is very difficult to adhere the air hole screen to the air hole 16 of the receiver unit 11, and the problem is not easy. It was.

In particular, when attaching the air hole screen made of polyester to the surface of the air hole 16 of the receiver unit 11, the area of the air hole 16 is not only very small but also is located inside the case in structure. Bonding process for the installation of the screen was a very difficult problem.

In addition, even if the air hole screen is attached to the two types of multifunction electroacoustic transducer 10, since the air hole screen is formed in the open space due to its structure, vibration of the diaphragm 14 of the receiver unit 11 is achieved. When air is introduced into or out of the receiver unit 11 due to a change in internal pressure, impurities (dust, moisture, and other bacteria) in the air are introduced through the air hole screen, or adsorbed on the surface of the air hole screen. There was a problem that causes a change in the output characteristics of the receiver.

The present invention made in consideration of the above problems to improve the stability of the adhesion state and the persistence of the adhesion state of the air hole screen attached to the air hole portion of the receiver, as well as to prevent the inflow and deposition of impurities through the air hole screen It is a technical task to provide a structure of a multifunctional electroacoustic transducer.

The present invention for achieving the above object in the structure of the multi-function electro-acoustic transducer to perform the function of the receiver and the speaker, while bending the air hole formed from the inside of the case of the receiver portion toward the speaker side, the speaker formed on the case upper surface of the speaker portion It is characterized by being offset from the air hole, by adhering the air hole screen to the air hole forming portion.

1 is a perspective view showing the structure of a conventional electroacoustic transducer

Figure 2 is a cross-sectional view showing the structure of a conventional electronic acoustic transducer

Figure 3 is a perspective view showing the structure of another conventional electroacoustic transducer

Figure 4 is a cross-sectional view showing the structure of another conventional electroacoustic transducer

5 is a perspective view showing the configuration of the present invention

6 is a cross-sectional view taken along line A-A showing the assembled state of the present invention in detail;

<Code Description of Main Parts of Drawing>

100: multi-function electro-acoustic transducer 100 ': case

110 receiver unit 111 annular projection

115: air hole 116: air hole screen

117: grill 118: diaphragm

119 coil 120 speaker part

121: air hole 122: coil

123: diaphragm 124: grill

130: York 1 140: York 2

141: hole 142: blocking member

150: magnet

Figure 5 is a perspective view showing the configuration of the present invention, Figure 6 is a cross-sectional view taken along line A-A showing the assembled state of the present invention in detail, double reference numeral 100 denotes a multifunctional electroacoustic transducer.

5 to 7, in the structure of the multifunction electroacoustic transducer 100 configured to perform a receiver and a speaker function, an air hole 115 formed from inside the case 100 'of the receiver unit 110 is provided. ) Is bent downward toward the speaker unit 120, so as to deviate from the speaker air hole 121 formed on the upper surface of the case 100 ′ of the speaker unit 120, and an air hole screen ( 116) by bonding.

The air hole screen 116 is made of polyester, and is made by adjusting the woven fine hole (Mesh).

The structure of the receiver unit 110 will be described in detail with reference to FIG. 6. The yoke 1 130 coupled to the yoke 2 140 by the magnet 150 is inserted into the case 100 ′. In addition, a plurality of air holes 115 are radially formed from the inner surface of the annular projection 111 formed inside the upper surface of the case 100 ', so as to be bent downward at a predetermined position to penetrate to the speaker unit 120 side. In addition, the air hole screen 116 is attached to the lower surface of the middle portion of the case in which the air hole 115 is formed, and the yoke 1 130 and the yoke 2 having the magnet 150 inserted into the upper surface of the annular projection 111. Attached to the diaphragm 118 provided with a coil 119 to move up and down between the 140, the grill 117 is fitted to the inner surface of the case 100 'and at the top surface of the annular projection 111 It is made by mounting and adhesive fixing.

In addition, the speaker unit 120 forms a plurality of air holes 121 in the middle portion of the stepped case 100 ′, and is positioned between the yoke 1 130 and the yoke 2 140 to move up and down. The diaphragm 123 provided with the coil 122 is attached to the lower inner surface of the case 100 ', and the grill 124 is inserted and fixed inside the lower end of the case 100'.

The present invention made as described above is as shown in detail in Figure 6, the case (100 ') is divided into the upper and lower, the receiver unit 110 and the speaker unit 120 to face each other, the case (100') Air holes 115 and 121 of the receiver unit 110 and the speaker unit 120 are formed on the surface portions facing each other in the middle portion of the), and are formed to be offset from each other, and the air of the receiver unit 110 The hole is attached to the air hole screen 116 to control the flow of air.

In the present invention as described above, the upper surface of the case 100 'of the speaker unit 120 is formed in a predetermined spaced portion such that the outer surface of the air hole screen 116 of the receiver unit 110 does not directly contact the open space. The open space is blocked to some extent, and as air flows into and out of the receiver 110 according to a change in the internal pressure caused by the vibration of the diaphragm 119, impurities (dust, moisture, and other bacteria) in the air are released. It is prevented from entering through the hole screen 116 or adsorbed to the surface of the air hole screen 116 as much as possible.

In addition, the surface of the case 100 ′ of the speaker unit 120 protects the adhesion state of the air hole screen 116 of the receiver unit 110, thereby increasing the stability and durability of the adhesion.

In the present invention as described above, the upper surface of the case 100 'of the speaker unit 120 formed in a predetermined spaced portion so that the outer surface of the air hole screen adhered to the receiver unit does not directly contact the open space. It is blocked to some extent to improve the stability of the adhesion state of the air hole screen attached to the air hole portion of the receiver part and the persistence of the adhesion force from external force, and to prevent impurities from entering and adsorbing through the air hole screen. .

Claims (1)

In the structure of the multifunction electro-acoustic transducer 100 to perform the receiver and speaker functions, the air hole 115 formed from the inside of the case 100 'of the receiver unit 110 is bent downward toward the speaker unit 120, Multi-function electro-acoustic, characterized in that the deviating from the speaker air hole 121 formed on the upper surface of the case 100 'of the speaker unit 120, and the air hole screen 116 is bonded to the air hole 115 forming portion Structure of the transducer.