KR100824436B1 - Diaphragm of the electronic sounder and the electronic sound which has the diaphragm - Google Patents

Abstract

A diaphragm of an electronic sounder and an electronic sound having the same are provided to prevent a vibration loss of a magnetic circuit by limiting a vibration of the diaphragm of a thin film shape. A diaphragm of an electronic sounder includes a coil(11), a vibration plate(12), a supporting member(13), and a ring protrusion(13a). A center of the vibration plate is fixed on a side of the coil. An outer circumference plane of the vibration plate is confined by an opening unit of a case. The vibration plate is vibrated in response to an AC signal applied to the coil for magnetic flux formed on an air gap between a yoke, a magnet, and a top plate. The supporting member is fixed on a side of the vibration plate, and confines a reaction of the vibration plate by an external force. The ring protrusion is installed on a center of the supporting member, and installs the coil on a correct position.

Description

DIAPHRAGM OF THE ELECTRONIC SOUNDER AND THE ELECTRONIC SOUND WHICH HAS THE DIAPHRAGM}

The present invention relates to a diaphragm of an electroacoustic transducer and an electroacoustic transducer having the diaphragm.

In general, an electroacoustic transducer is a sound output device such as a speaker, a receiver, a buzzer, a vibrator (vibrator) which converts an electrical signal input from a signal source into a mechanical signal to output sound or generates vibration force. Earphone and speaker system with sound output device.

Conventional electro-acoustic transducer is a coil fixed to one side of the diaphragm is located in the gap between the magnet and the top plate which is laminated and fixed to the yoke and the yoke upper surface by sequential bonding or welding, to the air gap according to the direction of the alternating signal In response to the magnetic flux generated, the magnetic circuit including the yoke, the magnet and the top plate and / or the coil and the diaphragm vibrate to generate vibration force and / or sound.

Among the electroacoustic transducers described above, the electroacoustic transducer 1 which outputs sound by the vibration of the diaphragm, and outputs the vibration force by the vibration of the magnetic circuit is exemplarily shown in FIG. A diaphragm (D) in which a coil (V) is fixed to one side while being in a thin film form; A magnetic circuit (M) including a yoke (y), a magnet (m), and a top plate (p) forming a magnetic flux reacting with an AC signal of the coil (V); A leaf spring (S) which supports the magnetic circuit (M) in a casing; It comprises a; rivet pin (R) for fixing the leaf spring (S) to the case (C).

However, the diaphragm (D) of the conventional electroacoustic transducer should adhere the coil to the thin-film synthetic resin diaphragm using an adhesive. In the case of a small electroacoustic transducer, the coil and the diaphragm are small, in particular, the diaphragm is deformed. Since this happens easily, not only the handling and bonding work are difficult, but also the work of mounting the coil at the correct position of the diaphragm (the center of the vibrating plate) is very difficult.

In addition, the conventional electro-acoustic transducer outputs the sound by the vibration of the diaphragm, while in the dual mode of generating a vibration force by the vibration of the magnetic circuit, even in the situation where an AC signal of a frequency range for vibrating only the magnetic circuit is applied Since the diaphragm of the thin film form, which is relatively lighter than the circuit, vibrates, there is a problem that vibration loss of the magnetic circuit occurs as much as the vibration of the diaphragm.

In addition, in the conventional electroacoustic transducer, the magnetic circuit in which the leaf spring which supports the magnetic circuit in the casing by the law of inertia does not win the weight of the magnetic circuit but vibrates with the coil in an artificial drop impact such as carelessness or durability test is normally operated. Vibration acts to exceed the allowable range of the ballistics that is the maximum range that can be output sound or vibration, there is a problem that the deformation of the leaf spring and the magnetic circuit or the deformation and damage of other components in the case.

In addition, since the yoke, the magnet, and the top plate are laminated and fixed by an adhesive or welding, the conventional electroacoustic transducer has a problem that the fixing work is very troublesome and the surroundings of the adhesive surface are contaminated.

In the present invention, the diaphragm is fixed to a central portion on one side of the coil and the outer surface is constrained to the open end of the case, and vibrates according to an alternating current signal applied to the coil with respect to the magnetic flux formed in the gap between the yoke, the magnet and the top plate. A diaphragm, comprising: a support member fixed to one side of the diaphragm to limit a sensitive reaction of the diaphragm by an external force; It is provided in the center of one side of the support member, the annulus for seating the coil in place; characterized in that it further comprises.

In addition, the electroacoustic transducer of the present invention, the coil is fixed to the center of one side, the outer surface is a diaphragm restrained in the case open end; A magnetic circuit including a yoke, a magnet, and a top plate forming a magnetic flux reacting with an AC signal of the coil; An electroacoustic transducer including a leaf spring that supports the magnetic circuit in a casing; and outputs sound by vibration of the diaphragm, and generates vibration force by vibration of the magnetic circuit, the one side of the diaphragm. A support member fixed to limit the sensitive vibration of the diaphragm; It is provided in the center of one side of the support member, the annulus for seating the coil in place; characterized in that it further comprises.

  In addition, the electro-acoustic transducer in the present invention is provided with a rivet pin for fixing the leaf spring in the case, or the case and the cover, the plate spring on the magnetic circuit movement path of the rivet pin exceeds the allowable shot force It is characterized by the provision of a stopper for preventing the acting shot.

In addition, the magnetic circuit fixing structure of the electroacoustic transducer of the present invention is the outermost surface of the leaf spring is extended to surround the outer peripheral surface of the magnetic circuit seated on one side, the extended end is bent is made by pressing the magnetic circuit It is done.

According to the present invention, the coil is inserted into the annular portion of the leaf spring so that the coil can be fixed accurately and easily at the center position of the diaphragm without error.

In addition, the present invention, in the case of an electro-acoustic transducer that vibrates while the magnetic circuit vibrates separately from the diaphragm, even when an AC signal in the frequency range for vibrating only the magnetic circuit is applied, the diaphragm of a thin film type that is relatively lighter than the magnetic circuit is relatively light weight. By restricting this vibration, the vibration loss of the magnetic circuit relative to the vibration of the diaphragm can be prevented.

In addition, the present invention prevents the leaf springs from exceeding the allowable shot force by the law of inertia by the law of inertia in the artificial drop impact such as carelessness or durability test, thereby preventing the plate spring from acting in excess of the allowable shot force. It can prevent breakage or deformation and breakage of other components in the case.

In addition, the present invention is bent while extending the outer portion of the leaf spring to support the magnetic circuit consisting of the yoke, the magnet and the top plate to the elasticity of the yoke, the magnet and the top plate without adhesive or welding, By wrapping and constraining the outer circumferential surface, fixing of the magnetic circuit is easy, and the magnetic circuit portion can be prevented from being contaminated with foreign matter such as an adhesive.

2 is a perspective view showing a configuration according to an embodiment of the present invention diaphragm, Figure 3 is a configuration according to an embodiment of the present invention diaphragm prior to explaining the present invention 4 is a cross-sectional view showing an operating state according to an embodiment of the present invention diaphragm, Figure 5 is a perspective view showing a configuration according to another embodiment of the present invention diaphragm, Figure 6 is the present invention 7 is an enlarged cross-sectional view showing only a configuration of a main part according to another embodiment of the diaphragm, and FIG. 7 is an exploded cross-sectional view showing a configuration according to an embodiment of the electroacoustic transducer of the present invention, and FIGS. 9 is a cross-sectional view showing a configuration according to an embodiment of an electroacoustic transducer, Figure 9 is a cross-sectional view showing a configuration according to another embodiment of the electroacoustic transducer of the present invention, Figure 10 a), b) is the present invention A chair showing an operation state according to another embodiment of the transducer section, Figure 11 is an exploded perspective view showing another embodiment of the present invention, Figure 12 is a cross-sectional view showing still another embodiment of the present invention.

The present invention will be described below with reference to the accompanying drawings presented as above.

First, the diaphragm of the electroacoustic transducer of the present invention is shown in Figure 2 to 4, the central portion is fixed to one side of the coil 11 and the outer surface is constrained to the open end of the case 20, yoke In the diaphragm 12 which vibrates according to an alternating current signal applied to the coil 11 with respect to the magnetic flux formed in the gap between the magnet 15 and the magnet 16 and the top plate 17, one side of the diaphragm 12 It is fixed to the surface, the support member 13 for limiting the sensitive reaction of the diaphragm 12 by the external force; It is provided in the center of one side of the support member, the annulus (13a) for seating the coil 11 in place; may be configured to further include.

For reference, in the present invention, the sensitive reaction of the diaphragm 12 refers to a case in which a signal other than a corresponding frequency range of an alternating signal input to the coil 11 is input so that sound is output by the vibration of the diaphragm 12. It means vibration generated when an external shock such as a natural fall is transmitted.

Here, the support member 13 of the diaphragm 12 of the electroacoustic transducer of the present invention may be a thin plate-shaped metal plate spring, the shape of the center portion and the outer portion is made of annulus (13b) (13c) The central ring frame 13b and the outer ring frame 13c may be integrally connected by the carbohydrate 13d.

In addition, the support member 13 may be bonded or fused to the outer portion of the central dome of the diaphragm 12 and the outer surface portion of the diaphragm 12, or may be fixed in close contact with the entire diaphragm 12. , The support member 13 itself may be made of a thin metal sheet form to output sound while vibrating alone.

In this case, the center ring frame 13b and the outer ring frame 13c of the support member 13 may be fixed to the outer surface of the central dome portion of the diaphragm 12 and the outer surface of the diaphragm 12, respectively.

In addition, the annulus 13a of the support member 13 may be formed to protrude in one direction of the inner circumference of the central annulus frame 13b, may be formed to protrude in one direction of the outer circumference, and both in and out of the outer circumference. It may be formed to protrude. In this case, one side inner diameter or outer diameter of the coil 11 may be seated and fixed while being fitted to the round jaw 13a.

In addition, the annulus 13a of the support member 13 may be a groove formed in an annular shape on one side of the central annulus frame 13b. In this case, the coil 11 may be seated and fixed in the annular groove.

In addition, an annular magnetic body 11a may be further adhesively fixed to the outer circumferential surface of the coil 11 fixed to the support member 13.

In this case, the magnetic body 11a may be a metal body magnetized in response to a magnetic force, may be a magnet, adhesively fixed to the central ring frame 13b of the support member 13 on which the coil 11 is fixed, or impregnated. Can be fixedly installed.

In this case, before the alternating signal is input to the coil 11, mutual magnetic force acts on and attracts the magnet 16, the top plate 17, and the yoke 15, and the alternating signal is applied to the coil 11. When input, the input signal and the magnetic force of the magnetic body 11a itself act positively to further increase the vibration force.

Since the diaphragm 12 of the present invention as described above is seated while the coil 11 is fitted to the annulus 13a portion of the support member 13, the diaphragm 12 can be fixed at an accurate position, and the diaphragm 12 is pulled on one side when vibrating. This prevents the output from being distorted.

In addition, as described above, the coil 11 may be accurately and easily fixed to the central position of the diaphragm 12 without any error through the annulus 13a of the support member 13.

As shown in FIG. 4, the diaphragm 12 according to the present invention is constrained to the inner side of the open end of the case 20, and the yoke 15 which forms a magnetic flux reacting with an AC signal of the coil 11. And magnetically fixed to the inner center portion of the case 20 through the magnetic circuit 14 including the magnet 16 and the top plate 17 to the plate spring 18 to form the electro-acoustic transducer 10, the resonance frequency ( fo) Assuming that the magnetic circuit 14 supported by the leaf spring 18 in the range of 100 Hz to 175 Hz vibrates in response to the coil 11, the magnetic circuit 14 responds to the coil 11. Although the vibration plate 12 including the coil 11 is not supported by the supporting member 13 as in the related art, the magnetic circuit 14 portion is relatively heavier than the diaphragm 12 portion, On the contrary, the vibration width is largely vibrated at the diaphragm 11 part, and the magnetic circuit 14 part. In this case, the vibration width was small and large vibration force could not be expected.

However, as in the present invention, in the state in which the support member 13 is fixed to the diaphragm 12, the support member 13 so that the magnetic circuit 14 can vibrate in response to a frequency signal applied to the coil 11. Since the diaphragm supports the diaphragm 12 and restricts the vibration of the diaphragm 12, a large vibration can be obtained by preventing vibration attenuation caused by the vibration of the diaphragm 12 when the magnetic circuit 14 vibrates.

That is, according to the present invention, when the magnetic circuit 14 vibrates separately from the diaphragm 12, an AC signal (eg, a resonant frequency fo is 100 Hz to 175 Hz) in which only the magnetic circuit 14 is vibrated is applied. Even in this situation, by limiting the vibration of the diaphragm 12 having a thin film shape which is relatively lighter than the magnetic circuit 14, the vibration loss of the magnetic circuit 14 with respect to the vibration of the diaphragm 12 is prevented.

In addition, the support member 13 of the diaphragm 12 of the electroacoustic transducer of the present invention is fixed to the diaphragm 12 on one side outer circumferential surface of the outer ring frame (13c), as shown in Figure 5 and 6 attached to Threshold 2 (13e) to be seated in the position can be formed.

In this case, the round jaw 2 (13e) may be formed on the surface in the opposite direction to the round jaw (13a) or may be formed on the surface of the same reflection.

In this case, since the outer circumference of the diaphragm 12 is inserted and seated on the inner circumferential surface of the round jaw 2 (13e), the displacement of the diaphragm 12 and the supporting member 13 can be prevented.

7 and 8, the coil 11 is fixed to the center of one side, and the outer surface of the electroacoustic transducer 10 is a diaphragm constrained to an open end of the case 20. 12); A magnetic circuit (14) comprising a yoke (15), a magnet (16), and a top plate (17) forming a magnetic flux that reacts with an alternating current signal of the coil (11); And a leaf spring 18 that elastically supports the magnetic circuit 14 to the case 20, and outputs sound by the vibration of the diaphragm 12, while vibrating force by the vibration of the magnetic circuit 14. An electroacoustic transducer (10) for generating a support member (13), which is fixed to one side of the diaphragm (12) to limit the sensitive reaction of the diaphragm (12) by an external force; It is provided in the center of one side of the support member 13, the annulus (13a) for seating the coil 11 in place; may be configured to further include.

Here, the diaphragm 12 of the electron-acoustic transducer 10 of the present invention may be a thin film-like synthetic resin film having a long axis and a short axis, the shape of the dome is formed in the center, the flat portion is formed on the outer portion of the dome In the outer portion, an annular dome is formed in the same direction as the height direction of the dome, and the outer portion may have a planar shape.

On the other hand, the support member 13 of the electroacoustic transducer 10 of the present invention may be a thin plate-shaped metal plate spring, the shape of the center portion and the outer portion is made of annulus (13b) (13c), The central ring frame 13b and the outer ring frame 13c may be formed by being integrally connected by the carcass 13d.

In addition, the support member 13 may be adhered or fused to the outer plane portion of the central dome of the diaphragm 12 and the outer plane portion of the diaphragm 12, or may be fixed to the entire surface of the diaphragm 12. In addition, the support member 13 itself may be made of a thin metal sheet to vibrate alone to output sound. (The other support member 13 may be configured as a part of the diaphragm 12 of the aforementioned electroacoustic transducer. Same as described above.)

Meanwhile, the yoke 15 of the electroacoustic transducer 10 of the present invention constituting the magnetic circuit 14 may be a plate body penetrating the center, may be a block, or any part of the center or the outer periphery or In both cases, a stepped protrusion equal to the height of the magnet 16 and the top plate 17 may be formed to form a gap between the magnet 16 and the top plate 17.

The magnet 16 constituting the magnetic circuit 14 includes a circular block magnet 1 located at the center of the yoke 15 and a ring magnet 2 spaced apart from the magnet 1. It may be made, or only one of the circular or ring shape may be seated on the yoke (15).

In addition, the top plate 17 may be a cold-rolled steel sheet of a plate-shaped seated on the upper surface of the magnet (16).

In addition, a tungsten block, which is a weight body 14a, is further fixed to the magnetic circuit 14 on the outer circumferential surfaces of the magnet 16 and the top plate 17, thereby increasing the weight of the magnetic circuit 14 to increase vibration force. You can also.

On the other hand, the leaf spring (18) of the electro-acoustic transducer 10 of the present invention, the fixed ring frame (18a) of the center is fixed to the center of the inner surface of the case 20 by the rivet pin (19), the fixed ring frame (18a) Extends in the form of a plate, and is connected to a support ring frame 18b for crimping and supporting the magnetic circuit 14, and may be made of a carbide body 2 (18c) that supports the magnetic circuit 14 in a burst manner.

At this time, the fixed ring frame 18a may be penetrated by the rivet pin 19 to be fixed to the inner side of the case.

In addition, the support ring 18b may be crimped and gripped by wrapping the outer portion of the stack of the yoke 15, the magnet 16, and the top plate 17.

In addition, the cartilage 2 (18c) is a surface of the carbide 2 (18c) is cut off and removed more wider through the area between the fixed ring frame (18a) and the support ring frame (18b), whirlwind or zigzag-shaped plate It may be cut to form a plurality, it may be formed to be inclined at a position where the height of the support ring frame (18b) is higher than the fixed ring frame (18a).

The electroacoustic transducer 10 of the present invention configured as described above has a magnetic circuit supported by the leaf spring 18 at a resonance frequency fo of 100 Hz to 175 Hz, or 150 Hz to 200 Hz, as shown in FIG. 8A). Assuming that 14 vibrates in response to the coil 11, the magnetic circuit 14 should vibrate in response to the coil 11, but the diaphragm 12 including the coil 11 is supported as in the prior art. In the state in which the member 13 is not supported, the magnetic circuit 14 portion is heavier in weight than the diaphragm 12 portion, but rather, the vibration width vibrates greatly in the diaphragm 11 portion, and in the magnetic circuit 14 portion. Since the vibration width was small, a large vibration force could not be expected.

However, as in the present invention, the support member 13 is fixed to the diaphragm 12 so that the magnetic circuit 14 may vibrate in response to a frequency signal applied to the coil 11. 13 restricts the vibration of the diaphragm 12 while supporting the diaphragm 12, thereby preventing vibration attenuation caused by the vibration of the diaphragm 12 when the magnetic circuit 14 vibrates, thereby outputting a vibration force while obtaining a large vibration.

On the other hand, the electroacoustic transducer 10 of the present invention, as shown in Figure 8b), the diaphragm 12 is magnetically alternating with the coil 11 in the resonant frequency (fo) of 300Hz or 300Hz ~ 20KHz range Vibration is caused by the reaction of the magnetic flux formed in the gap of the circuit 14, in this case, since the portion of the magnetic circuit 14 is heavier than the portion of the diaphragm 12, corresponding to the coil 11 without flow, This vibration outputs sound.

In addition, as shown in FIG. 9, the electroacoustic transducer 10 of the present invention penetrates the center portions of the magnet 16 and the top plate 17, and extends the end of the rivet pin 19 to the yoke. The stopper 19a which penetrates the 15 and the magnet 16 and the top plate 17, and prevents the plate spring 18 which supports the magnetic circuit 14 from exceeding the allowable shot force and prevents the shot action from occurring. It may be provided at the end of the rivet pin (19).

In this case, as shown in (a) and (b) of FIG. 10, one side of the diaphragm 12 is disposed in the air gap between the magnet 16 and the top plate 17 seated on the yoke 15 and the yoke 15. The coil 11 fixed to the surface is positioned, and at this time, the yoke 15, the magnet 16, and the top plate 17 in response to the magnetic flux formed in the air gap according to the direction of the AC signal applied to the coil 11. In the process of generating a vibrating force while the magnetic circuit 14 including the oscillation, the input value is large, the vibration width is large, or the magnetic circuit 14 is supported by the law of inertia in an artificial drop shock such as carelessness or durability test. If the leaf spring 18 does not overcome the weight of the magnetic circuit 14 but exceeds the allowable shot force, the magnetic circuit 14 and the coil 11 and the diaphragm 12 may cause mutual interference. .

However, in the present invention, as shown, even if the leaf spring 18 does not overcome the weight of the magnetic circuit 14 and the shot spring exceeds the shot allowance, the stopper 19a of the rivet pin 19 may have the shot allowance value. Since it prevents the magnetic circuit 14 to move away, the leaf spring 18 is prevented from being deformed.

As described above, the magnetic circuit 14 is configured to prevent the magnetic circuit 14 from escaping the allowable shot in the direction of the diaphragm 12, and the case 20 when the magnetic circuit 3 exceeds the allowable shot in the direction opposite to the diaphragm 12. ) The inner side will be kept from exceeding the allowable shot force.

In addition, the fixed structure of the magnetic circuit 14 of the electroacoustic transducer 10 of the present invention extends the outermost surface of the leaf spring 18 to surround the outer circumferential surface of the magnetic circuit 14 seated on one side thereof. The end is bent and characterized in that it is made by pressing the magnetic circuit (14).

At this time, the outermost surface of the leaf spring 18 may be the outer circumferential surface of the support ring frame (18b).

In addition, a stepped portion is formed outside the upper surface of the top plate 17 stacked on the top surface of the magnetic circuit 14 so that the end of the bent leaf spring 18 is bent to be in close contact with the surface. In this case, it is preferable that the stepped portion formed on the outer surface of the upper plate 17 has the same height as the thickness of the leaf spring 18, which is in close contact with the upper surface of the upper plate 17. 18) and the surface of the top plate 17 to be in a planar state, through which the leakage of magnetic flux will be prevented.

In this case, the yoke 15, the magnet 16, and the top plate 17 that form the magnetic circuit 14 are compressed between the upper surface of the support ring 18b and the ends bent on the top plate 17. It is fixed.

Therefore, the yoke 15, the magnet 16, and the top plate 17 constituting the magnetic circuit 14 can be fixed without adhesive or welding.

In addition, the electron-acoustic transducer 10 of the present invention, as shown in Figure 11, the plate spring 13, the central portion of the one side and the other side outer portion is formed in the projection part 13f is formed by the partial protruding portion in the form of a dotted line. The groove 11b and 12a may be formed in the corresponding portion of the coil 11 or the diaphragm 12 seated on the annular projection 13f.

At this time, the annular projection 13f is to replace the aforementioned annular projection 13a and the annular projection 213e, may be formed on the support member 13 at the same time, each may be applied only one if necessary.

In this case, the part of the annular projection 13f formed in the leaf spring 13 and the stepped portion of the coil 11 or the vibration plate 12 in the process of mounting the coil 11 or the vibration plate 12 with respect to the leaf spring 13. Alternatively, the grooves 11b and 12a may be positioned while being fitted to each other, so that the coil 11 or the diaphragm 12 may be positioned at a more accurate position, and furthermore, the coil 11 or the diaphragm 12 is always constant. It can also be directed to have a direction.

As shown in FIG. 12, a realistic product embodiment of the present invention includes a diaphragm 12 fixed to a center of one side and an outer surface of the diaphragm 12 constrained to an open end of the case 20; A magnetic circuit (14) comprising a yoke (15), a magnet (16), and a top plate (17) forming a magnetic flux that reacts with an alternating current signal of the coil (11); And a leaf spring 18 that elastically supports the magnetic circuit 14 to the case 20, and outputs sound by the vibration of the diaphragm 12, while vibrating force by the vibration of the magnetic circuit 14. In the electro-acoustic transducer 10 for generating a case, the case 20 is projected so that the inner bottom surface center portion has a height, and the central portion of the leaf spring 18 has a horizontal shape on the protruding upper surface While seating, the other end of the rivet pin formed with a stopper (19a) in the upper end through the protruding portion of the leaf spring 18 and the case 20, and fixed by pressing through the rivet, the upper surface of the leaf spring (18) A ring-shaped magnet is provided so as to seat the central through yoke 15 whose lower surface is inclined upwardly from the outer side to the inner side, and have a gap in which the coil 11 is located at the center and the outer surface of the upper surface of the yoke 15. 16 and top plate 17 are laminated respectively. The top plate 17 covers the outer circumferential surface of the magnet 16 and the top plate 17 stacked on the outer circumferential surface of the yoke 15 and the outer circumferential surface of the yoke 15. On the inner surface of the case 20 is bent and crimped, an annular projection 13e for seating and fixing the diaphragm 12 in a fixed position is formed at one side of the outer side, and the coil 11 is fixed to the other side. It can be configured by fixing the support member 13 is formed with a round jaw (13a) to be seated in position.

In this case, since the leaf spring 18 is fixed to the protruding portion of the case 20, the leaf spring 18 may move at a higher position than the inner bottom surface of the case 20, and the leaf spring may move. When 18 moves downward, the yoke 15 can also be winged by the inclined portion of the lower surface of the yoke 15 without interfering with the leaf spring 18.

The present invention as described above is an electroacoustic transducer (signal output device) such as a speaker, a receiver, a buzzer, a vibrator (vibrator), and the technology applied to such an earphone and a speaker system is also within the scope of the present invention. It is obvious. That is, when the case 20 is applied to the earphone body, it can be used as an earphone.

While the invention has been described and illustrated in connection with a preferred embodiment for illustrating the principles of the invention, the invention is not limited to the configuration and operation as such is shown and described.

 Rather, it will be apparent to those skilled in the art that many changes and modifications to the present invention are possible without departing from the spirit and scope of the appended claims.

Accordingly, all such suitable changes and modifications and equivalents should be considered to be within the scope of the present invention.

1 is a cross-sectional view showing the configuration of a diaphragm applied to a conventional electroacoustic transducer and an electroacoustic transducer.

Figure 2 is a perspective view showing a configuration according to an embodiment of the present invention diaphragm.

Figure 3 is an exploded perspective view showing a configuration according to an embodiment of the inventor diaphragm.

4 is a cross-sectional view showing an operating state according to an embodiment of the present invention diaphragm.

5 is a perspective view showing a configuration according to another embodiment of the present invention diaphragm.

Figure 6 is an enlarged cross-sectional view showing only the configuration of the main part according to another embodiment of the present invention diaphragm.

Figure 7 is an exploded cross-sectional view showing a configuration according to an embodiment of the present invention an electroacoustic transducer.

Figure 8 a), b) is a cross-sectional view showing a configuration according to an embodiment of the electroacoustic transducer of the present invention.

9 is a sectional view showing a configuration according to another embodiment of the present invention.

10 a) and b) are sectional views showing an operating state according to another embodiment of the present invention.

11 is an exploded perspective view showing another embodiment of the present invention.

12 is a sectional view showing yet another embodiment of the present invention.

      <Description of the symbols for the main parts of the drawings>

10: electroacoustic transducer 11: coil

12 diaphragm 13 support member

13a: round chin 13b: central ring

13c: outer ring frame 13d: carburized body

13e: Round Jaw 2 14: Magnetic Circuit

15: York 16: magnet

17: top plate 18: leaf spring

18a: fixed ring frame 18b: support ring frame

18c: ball body 2 19: rivet pin

19a: stopper

Claims (30)

The central portion is fixed to one side of the coil 11 and the outer surface is constrained to the open end of the case 20, so that the magnetic flux formed in the air gap between the yoke 15 and the magnet 16 and the top plate 17 is formed. In the diaphragm 12 which vibrates in accordance with an alternating current signal applied to the coil 11, the diaphragm 12 is fixed to one side of the diaphragm 12 so as to restrict the diaphragm 12 from reacting sensitively by an external force ( 13); The diaphragm of the electroacoustic transducer, characterized in that it comprises a; provided in the center of one side of the support member, the annulus (13a) for seating the coil 11 in place. The diaphragm of an electroacoustic transducer according to claim 1, wherein the support member (13) is a thin plate-shaped metal leaf spring. According to claim 1, wherein the support member 13, the central portion and the outer portion is made of annulus (13b, 13c), the central annulus (13b) and the outer annulus (13c) by the carcass 13d Diaphragm of the electroacoustic transducer, characterized in that the plate spring is formed integrally connected. According to claim 1, wherein the support member 13, the central portion and the outer portion is made of annulus (13b, 13c), the central annulus (13b) and the outer annulus (13c) by the carcass 13d The plate spring is formed integrally connected, the annulus (13a) is a diaphragm of the electroacoustic transducer, characterized in that protruding in one direction of the inner circumference of the central ring (13b). The diaphragm of the electroacoustic transducer according to claim 4, wherein the ring member (13a) of the support member (13) is formed to protrude in one direction of the outer circumference of the central ring frame (13b). The diaphragm of the electroacoustic transducer according to claim 4, wherein the ring member (13a) of the support member (13) is formed to protrude in one direction of the inner and outer circumference of the central ring frame (13b). The diaphragm of the electroacoustic transducer as set forth in claim 1, wherein the support member (13) is formed with an annulus (13e) for seating the diaphragm (12) in a fixed position on an outer circumferential surface of one side direction. Coil 11 is fixed to the center of one side, the outer surface is the diaphragm 12 is constrained to the case 20 open end; A magnetic circuit (14) comprising a yoke (15), a magnet (16), and a top plate (17) forming a magnetic flux that reacts with an alternating current signal of the coil (11); And a leaf spring 18 that elastically supports the magnetic circuit 14 to the case 20, and outputs sound by the vibration of the diaphragm 12, while vibrating force by the vibration of the magnetic circuit 14. An electroacoustic transducer (10) for generating a support member (13), which is fixed to one side of the diaphragm (12) to limit the sensitive reaction of the diaphragm (12) by an external force; And an annulus (13a) provided at the center of one side of the support member (13) for seating the coil (11) in the correct position. The method of claim 8, wherein the support member 13 is a thin plate-like metal leaf spring, the shape of the center portion and the outer portion is made of annulus (13b) (13c), the center annulus (13b) and the outer Electron transducer comprising a ring frame (13c) is integrally connected by a carbide (13d). 9. The electroacoustic transducer according to claim 8, wherein the support member (13) is adhesively fixed to an outer plane portion of the central dome of the diaphragm (12) and an outer plane portion of the diaphragm (12). 9. The electroacoustic transducer according to claim 8, wherein the support member (13) is tightly fixed to the entire surface of the diaphragm (12). 9. An electroacoustic transducer as claimed in claim 8, characterized in that the support member (13) is made of a thin metal plate body to replace the diaphragm (12). 9. The electroacoustic transducer according to claim 8, wherein the yoke (15) constituting the magnetic circuit (14) is a plate body having a center penetrated therein. The yoke 15 constituting the magnetic circuit 14 has a stepped protrusion formed at the height of the magnet 16 and the top plate 17 at either the center or the outer circumference thereof. 16) and an electroacoustic transducer, characterized in that a gap is formed between the top plate and the top plate. The magnet 16 constituting the magnetic circuit 14 has a circular block shaped magnet 1 located at the center of the yoke 15, and a ring shape positioned at a distance from the magnet 1. Electro-acoustic transducer, characterized in that consisting of two magnets. 9. The electroacoustic transducer according to claim 8, wherein the magnet (16) constituting the magnetic circuit (14) is made of only one of a circular or ring shape and seated on the yoke (15). According to claim 8, The leaf spring 18 is fixed to the center of the ring ring (18a) in the center of the inner surface of the case 20 by the rivet pin 19, extending from the fixed ring frame (18a) in the form of a plate And the support ring frame (18b) for crimping and supporting the magnetic circuit (14), wherein the electroacoustic transducer (2) is made of a carbide body (2) supporting the magnetic circuit (14). 18. The electroacoustic transducer according to claim 17, wherein the fixed ring frame (18a) is penetrated by rivet pins (19) to fix the inner central portion of the case (20). 18. The electroacoustic transducer as set forth in claim 17, wherein the support ring (18b) wraps and grips the outer portion of the stack of the yoke (15), the magnet (16), and the top plate (17). 18. The electron acoustic transducer of claim 17, wherein the carbohydrate 2 (18c) is a surface that is cut off and removed more widely between the fixed ring frame (18a) and the support ring frame (18b), and has a tornado shape. . 18. The electroacoustic transducer as set forth in claim 17, wherein the carbohydrate (18c) is inclined at a position where the height of the support ring frame (18b) is higher than that of the fixed ring frame (18a). 9. The electroacoustic transducer as set forth in claim 8, wherein the diaphragm (12) vibrates in a resonant frequency of 300 Hz to 20 KHz. 9. The electroacoustic transducer according to claim 8, wherein the diaphragm (12) vibrates at a resonant frequency of 300 Hz. 9. The electroacoustic transducer according to claim 8, wherein the magnetic circuit (14) vibrates at a resonance frequency of 100 Hz to 200 Hz. 9. The electroacoustic transducer according to claim 8, wherein the magnetic circuit (14) vibrates at a resonant frequency of 175 Hz. The yoke (15) of claim 8, wherein the center portions of the magnet (16) and the top plate (17) are penetrated, and the ends of the rivet pins (19) are riveted and fixed through the inner central portion of the case (20). ) And a stopper 19a that penetrates the magnet 16 and the top plate 17, and stops the plate spring 18 supporting the magnetic circuit 14 from exceeding the allowable shot force. Electro-acoustic transducer, characterized in that provided in the end of the pin (19). According to any one of claims 8 to 26, The electro-acoustic transducer 10 is the outermost surface of the leaf spring 18 is extended to surround the outer peripheral surface of the magnetic circuit 14 seated on one side, And the extended end is bent to compress the magnetic circuit (14). 27. The method according to any one of claims 8 to 26, wherein the plate spring 13 of the electro-acoustic transducer 10 and the outer side portion of the plate spring 13 are formed with a dotted projection 13f formed by partially protruding in the form of a dotted line. And the grooves 11b and 12a which are fitted to the annular projections 13f in the corresponding portions of the coil 11 or the diaphragm 12 seated on the annular projections 13f. converter. Coil 11 is fixed to the center of one side, the outer surface is the diaphragm 12 is constrained to the case 20 open end; A magnetic circuit (14) comprising a yoke (15), a magnet (16), and a top plate (17) forming a magnetic flux that reacts with an alternating current signal of the coil (11); And a leaf spring 18 that elastically supports the magnetic circuit 14 to the case 20, and outputs sound by the vibration of the diaphragm 12, while vibrating force by the vibration of the magnetic circuit 14. In the electro-acoustic transducer 10 for generating a case, the case 20 is protruded so that the center of the inner bottom surface has a height, and the central portion of the leaf spring 18, the lower surface of the protruding upper surface has a horizontal form While seating, the other end of the rivet pin formed with a stopper (19a) in the upper end through the protruding portion of the leaf spring 18 and the case 20, and fixed by pressing through the rivet, the upper surface of the leaf spring (18) A ring-shaped magnet is provided so as to seat the central through yoke 15 whose lower surface is inclined upwardly from the outer side to the inner side, and have a gap in which the coil 11 is located at the center and the outer surface of the upper surface of the yoke 15. 16 and top plate 17 are laminated respectively. The outer surface of the plate spring 18 extends around the outer circumferential surface of the magnet 16 and the top plate 17 stacked on the outer circumferential surface of the yoke 15 and the outer surface of the yoke 15, and then the top plate 17 ) Bent and crimped to the upper surface, and an annulus 13e for seating and fixing the diaphragm 12 in the fixed position is formed on one side of the outer surface of the case 20, and the coil 11 is formed on the other side. Electro-acoustic transducer, characterized in that configured by fixing the support member 13 is formed with a ring (13a) for seating and fixing in place. The electroacoustic transducer according to any one of claims 1 to 8 or 26 or 29, wherein the case (20) is an earphone body.

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