KR100336987B1 - Speaker - Google Patents

Abstract

The present invention provides a process for forming a yoke having a predetermined shape by program molding a metal plate having a predetermined shape, and a step of forming a frame having a predetermined shape having a raised protrusion by program forming a plate having a predetermined shape, After seating the yoke, bending the protrusion of the frame inward to form the frame and the yoke integrally, and by fixing the diaphragm and cap having a known magnet, plate, voice coil and the like sequentially on the integrated yoke and frame The process is completed to complete the speaker.

According to the present invention, it is possible to reduce the loss of magnetic force while maximizing the efficiency of the speaker thin.

Description

Speaker {Speaker}

The present invention relates to a speaker manufacturing method and a speaker manufactured using the same, and more particularly, to improve the material and the manufacturing method of manufacturing the yoke (yoke) to maximize the efficiency of the speaker (speaker) while thinning the speaker The present invention relates to a speaker manufacturing method and a speaker manufactured using the same.

In the conventional speaker, as shown in FIG. 1, the magnetic force generated from the magnet 102 at the center of the yoke 101 is transmitted through the yoke 101 and concentrated in one direction by a plate 103, respectively. A magnetic field line loop is formed while being applied to a voice coil 104 attached to 105 (diaphagm).

The magnetic force is generated in the vicinity of the voice coil 104 at the moment when a driving signal is applied to the voice coil 104 in a state where a loop of the magnetic force line is formed by the magnetic force generated from the magnet 102.

Accordingly, a force pushing or pulling each other between the magnet 102 and the voice coil 104 is generated. In other words, the coil is raised or lowered according to the direction of the magnetic force line of the magnet 102 and the magnitude and direction of the electromagnetic force line of the voice coil 104 by the driving signal applied to the voice coil 104, and the diaphragm adhered to the coil is Will move at the same time.

In general, as described above, the speaker repeatedly operates the diaphragm to generate sound pressure, thereby outputting sound in an audible frequency band that can be heard by a human.

Here, the yoke 101 is made of a magnetic material so as to induce the smooth transfer of the magnetic force generated from the magnet 102, as shown in Figure 2, the magnet is in relation to the outer periphery of the yoke 101 The magnetic force generated from 102 is not applied to the voice coil 104 entirely, and a large amount of magnetic force flows out of the yoke 101 and is lost.

In order to reduce such a loss of magnetic force, conventionally, as shown in FIG. 3, the outer portion of the yoke 101 is formed of a nonmagnetic material, but the thickness of the yoke becomes thick due to the non-magnetic material's thickness. . Accordingly, there is a drawback that the thickness of the speaker to be thinned becomes thick.

In addition, in the related art, since the magnet and the plate positioned at the center of the yoke are fixed and installed by the bonding operation using an adhesive, there is a drawback that it is difficult to secure the magnet and the plate firmly to the yoke as well as a separate bonding operation.

An object of the present invention is to improve the method of manufacturing a speaker to reduce the loss of magnetic force generated from the magnet built in the speaker while thinning the speaker to produce a speaker manufacturing method and to maximize the efficiency according to the external input and manufacturing using the same To provide a customized speaker.

Another object of the present invention is to simplify the process for fixing the magnet and the plate while being able to firmly install the magnet and plate.

1 is a partial cross-sectional view showing an example of a conventional speaker.

2 is a perspective view showing an example of a yoke of a conventional speaker.

3 is a perspective view showing another example of a yoke of a conventional speaker.

Figure 4 is an exploded perspective view showing the yoke of the speaker according to the present invention.

5 is a partial cross-sectional view showing a speaker with a yoke according to the present invention.

6a, b, c, d and e are cross-sectional views showing a process for manufacturing a speaker according to the present invention.

7A and 7B are cross-sectional views illustrating a method of fixing a magnet and a plate to a yoke in the present invention.

※ Explanation of code about main part of drawing ※

1, 1a: yoke 2, 2a: magnet

3, 3a: plate 4: voice coil

5: diaphragm 6: frame

7: cap 8: seating surface

9, 9a: protrusion 10: pole

11a, b, c: through hole

Speaker manufacturing method according to the present invention for achieving the above object is a step of forming a yoke having a predetermined shape by program molding a metal plate material of a predetermined shape; Program molding a sheet material having a predetermined shape to form a frame having a predetermined shape with raised protrusions; Seating the yoke on the frame and bending the protrusions of the frame inward to form the frame and the yoke integrally; And a process of completing a speaker by sequentially fixing a known magnet and plate, a diaphragm having a voice coil, a cap, and the like on the integrated yoke and the frame.

Here, it is suitable to shape the material of the frame into a nonmagnetic material such as AL and duralumin.

The speaker manufactured by the method as described above, the yoke is made of a metal plate and bent so that the center is lower than the outside to have a predetermined space in the center; A frame made of a non-magnetic material and integrally molded on the outer circumferential surface of the yoke; A magnet seated at the center of the yoke; A plate seated on the magnet to induce the magnetic force of the magnet in one direction; A diaphragm attached to a bottom surface of the voice coil having a magnetic force corresponding to a driving signal input from the outside so as to be introduced into the space between the yoke and the plate; And a cap for protecting the magnet and the plate, the voice coil, and the diaphragm.

Here, it is suitable to shape the material of the frame into a nonmagnetic material such as AL and duralumin.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

4 and 5, the speaker according to the present invention, the yoke (1) made of a plate of metal material is bent so that the center is lower than the outside by a press or the like to have a predetermined space in the center. On the outer circumferential surface of the yoke 1, a frame 6 made of a non-magnetic plate such as AL or duralumin is formed into a single body. That is, the magnetic force generated from the magnet 2 seated in the center of the yoke 1 is not transmitted to the frame 6 but is transmitted only to the outer side of the yoke 1 to prevent unnecessary loss of magnetic force.

The magnet 2 and the plate 3 are sequentially stacked in the center of the yoke 1 to induce magnetic force generated from the magnet 2 toward the outer circumferential surface of the plate 3.

In addition, a diaphragm 5 is attached to the upper portion of the frame 6 to surround the plate 3 while being spaced a predetermined distance from, and a voice having a magnetic force corresponding to a driving signal input from the outside is attached to the bottom of the diaphragm 5. The coil 4 is attached to the space between the yoke 1 and the plate 3.

Finally, a cap (7: cap) for protecting the upper magnet (2) and the plate (3), the voice coil (4), the diaphragm (5), and the like is fixed to the upper part of the frame (6). .

A method of manufacturing a speaker having such a configuration will be described with reference to FIG.

First, the metal plate cut in a circular shape is formed by a press, and the yoke 1 is formed by bending the center portion to be lower than the periphery as shown in FIG. 6A. At this time, when bending the metal plate at one time, the bending surface may be cut due to the height difference between the center and the periphery of the yoke (1). Can be secured.

Next, in the process of forming the frame 6 as shown in Fig. 6B, a non-magnetic plate cut into a donut shape is formed by a press to make the frame 6, and the inside of the frame 6 faces upwardly. (9) is formed and the outside is bent upward.

After the yoke 1 and the frame 6 are respectively molded into a predetermined shape, the yoke 1 is placed on the frame 6 so that the outer circumferential surface of the yoke 1 contacts the seating surface 8 of the frame 6 as shown in FIG. )). Then, the overlapped yoke 1 and the frame 6 are pressed by a press to form the yoke 1 and the frame 6 in one piece. At this time, the protrusion 9 facing upward wraps the outer circumferential surface of the yoke 1 while being bent inward by the press as shown in FIG. 6D.

Finally, as shown in FIG. 6E, the magnet 2 and the plate 3 are sequentially fixed to the center of the yoke 1, and then the diaphragm 5 and the cap 7 having the voice coil 4 are placed on the frame 6. Fix the speaker to complete the speaker.

The operation of the speaker according to the present invention configured as described above will be described.

The magnetic force generated from the magnet 2 in the center of the yoke 1 is transmitted through the yoke 1, which is a magnetic material, and is concentrated in one direction by the plate 3, respectively, and is respectively attached to the voice coil 4 attached to the diaphragm 5. When applied to a magnetic field line loop is formed.

When a driving signal is applied to the voice coil 4 in a state where the loop of the magnetic force line is formed by the magnetic force generated from the magnet 2 in this manner, the magnetic force is generated around the voice coil 4.

Accordingly, a force pushing or pulling each other between the magnet 2 and the voice coil 4 is generated. In other words, the coil is raised or lowered by the magnitude and direction of the electromagnetic force lines of the magnet 2 and the voice coil 4 by the driving signal applied to the voice coil 4, and the diaphragm adhered to the coil is moved simultaneously. .

Accordingly, as the speaker is repeatedly operated as described above, the sound pressure is generated and outputs sound of an audible frequency band that can be heard by a person.

In particular, since the magnetic force generated from the magnet 2 and transmitted through the yoke 3 is not transmitted through the non-magnetic frame 6, most of the magnetic force is applied to the voice coil 4.

Therefore, the loss of magnetic force is reduced, and if the same conditions, the pushing and pulling force formed between the magnet 2 and the voice coil 4 is increased than the conventional one.

7A and 7B are cross-sectional views showing another embodiment of the present invention, having a pole 10 for coupling the yoke 1a, the magnet 2a, and the plate 3a into one, and the pole 10 At the lower end of the pawl 10 is larger than the diameter of the locking jaw is formed and the upper end of the pole 10 is formed with a projection (9a). In the centers of the yoke 1a, the magnet 2a, and the plate 3a, through holes 11a, 11b, 11c penetrating up and down are formed. In particular, by varying the diameter of the through hole (11c) formed in the center of the yoke (1a) to prevent the pole 10 from falling up while maintaining the bottom of the yoke (1a) in a flat state.

When the yoke 1a, the magnet 2a, and the plate 3a are combined into one using the pole 10 configured as described above, the yoke 1a, the magnet 2a, and the plate (from the top of the pole 10) are shown. Combine 3a) sequentially.

Then, by pressing the upper end of the pawl 10 by using a press, that is, a press for forming the yoke 1a, the protrusion 9a of the pawl 10 is bent outward, and the protrusion 9a of the pawl 10 is plated ( Wrap the top of 3a).

As a result, the yoke 1a, the magnet 2a, and the plate 3a are integrally fixed to the upper surface of the yoke 1a by the pawl 10.

Therefore, according to the present invention, a speaker can be thinned while maximizing efficiency by reducing a loss of magnetic force.

In addition, the present invention has the effect that it is possible to more securely install the magnet and plate while simplifying the process for fixing the magnet and plate to the yoke.

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the present invention, and such modifications and modifications belong to the appended claims.

Claims (4)

delete delete A yoke, which is a magnetic body, a magnet fixed to an upper center of the yoke, a plate fixed to an upper part of the magnet to guide the magnetic field of the magnet in one direction, and a voice coil inserted into a space between the yoke and the plate is provided. In the speaker comprising a diaphragm vibrating by the magnetic force generated from the magnet, The yoke is made of a cylindrical shape open on one side of the open outer peripheral end is bent in a direction perpendicular to the outer peripheral edge, The bent outer peripheral end of the yoke is coupled to a non-magnetic frame to reduce magnetic loss, The frame has a cylindrical shape in which both sides are open, and a seating surface on which the bent outer peripheral end of the yoke is seated at an open outer peripheral end thereof, and a bent outer peripheral end of the yoke seated on the seating surface, from above. And a projection for pressing and fixing the fixed yoke, and the diaphragm is fixed to the open outer peripheral end thereof so that the voice coil is positioned between the yoke and the plate to vibrate. The method of claim 3, The frame is characterized in that the aluminum or duralumin.