KR200382038Y1 - Compact speaker unit enabling to provide surround sound - Google Patents

Abstract

The present invention discloses a small speaker unit having a simple configuration, small volume, and capable of providing stereophonic sound. Small speaker unit capable of providing a stereo sound according to a preferred embodiment of the present invention, the housing is inserted into the ear of the user; A sound unit mounted in the housing, the sound unit generating sound by electromagnetic force; And a vibration unit attached to the lower part of the sound unit and receiving the same electrical signal as the sound unit and vibrating in the housing according to the sound of the sound unit. The vibration unit includes a vibration cap coupled to the lower portion of the sound unit; A coil attached to an inner bottom of the vibrating cap; A ring fitted around an inner circumference of the vibration cap; An elastic member supported by the ring and disposed on an inner space of the vibration cap; A yoke elastically supported by an elastic member; A magnet attached to the receiving space of the yoke; And a plate attached over the magnet. Due to such a configuration, the present invention can provide a small speaker unit that can provide stereoscopic sound, which is simple in configuration, small in volume, and easy to carry.

Description

Compact speaker unit that can provide stereo sound {COMPACT SPEAKER UNIT ENABLING TO PROVIDE SURROUND SOUND}

The present invention relates to a small speaker unit, and more particularly to a small speaker unit that can provide a three-dimensional sound that can vibrate according to the sound in the housing.

Developers of computers, handheld devices, games, and sound equipment, which are advancing technology differently every day, are working to provide better sound to users. As part of such efforts, devices are provided to allow vibrations to be transmitted to peripheral devices and the like so that users can enjoy more three-dimensional sounds. Such devices are known from Korean Patent Publication No. 0324217.

Referring to FIG. 1, a headphone apparatus for providing a dynamic voice having vibration according to the prior art will be described.

As shown in Fig. 1, the headphone apparatus 10 for providing dynamic voice according to the prior art includes a pair of voice generating units 16 each having acoustic transducers. The sound generating unit 16 is designed to be placed adjacent to the left and right ears of the user, respectively. The headphone device 10 also has a vibration generating unit 14 with a vibrator 86. The vibration generating unit 14 is designed to be placed behind the user's neck. In operation, the electrical transducer generates an audible voice in response to the audio signal, while the vibrator 86 generates vibrations. The audible voice is sensed by the user's left and right ears. On the other hand, vibrations are detected behind the user's neck. This allows the user to sense the audible voice at the same time as the vibration, which gives the user a sophisticated and dynamic combination of voice and vibration.

However, the headphone device according to the prior art includes a separate vibrator, which makes the headphone device heavier, and because the voice generating unit and the vibrator are separated, the configuration is complicated and bulky, so that the headphone device can be used in a small device such as an earphone. It had a disadvantage. Therefore, it is inconvenient to carry, and there is a problem that is difficult to use in a small sound device or a portable terminal while moving.

The present invention has been devised to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a small speaker unit which is simple in configuration, small in volume, and which can provide three-dimensional sound.

Another object of the present invention is to provide a compact speaker unit that can provide a three-dimensional sound that is easy to carry by vibrating the housing in the user's ear by having a sound unit and a vibration unit integrated in the housing.

In order to achieve the object of the present invention as described above, the small speaker unit that can provide a three-dimensional sound according to a preferred embodiment of the present invention, a small speaker unit, the housing is inserted into the user's ear; A sound unit mounted in the housing, the sound unit generating sound by electromagnetic force; And a vibration unit attached to the lower part of the sound unit and receiving the same electrical signal as the sound unit and vibrating in the housing according to the sound of the sound unit.

The vibration unit includes a vibration cap coupled to the lower portion of the sound unit; A coil attached to an inner bottom of the vibrating cap; A ring fitted around an inner circumference of the vibration cap; An elastic member supported by the ring and disposed on an inner space of the vibration cap; A yoke elastically supported by an elastic member; A magnet attached to the receiving space of the yoke; And a plate attached over the magnet.

The compact speaker unit capable of providing stereoscopic sound according to a preferred embodiment of the present invention also includes a damper attached to the bottom of the sound unit and the bottom of the vibration cap.

The elastic member is a leaf spring, the vibrating cap has an end on the wall portion, and the elastic member is supported by the end.

Hereinafter, with reference to Figures 2 to 6 will be described in detail a small speaker unit (1) that can provide a three-dimensional sound according to a preferred embodiment of the present invention.

Figure 2 is a schematic perspective view showing the assembled appearance of the small speaker unit 1 that can provide a stereo sound according to a preferred embodiment of the present invention, Figure 3 is to provide a stereo sound according to a preferred embodiment of the present invention It is sectional drawing of the small speaker unit 1 which can be used.

2 and 3, the small speaker unit 1 (hereinafter, described as an example of an insert earphone) according to a preferred embodiment of the present invention is integrated into the housing 100 inserted into the user's ear. The molded sound unit 200 and the vibration unit 300 are installed to vibrate according to the sound output or the frequency without installing a separate vibrator outside the housing 100.

The sound unit 200 is used as a sound generating mechanism in general earphones, and attaches the first magnet 220 and the first plate 230 to the inside of the frame 210, and the first magnet 220 and the first magnet. The diaphragm 250 to which the first coil 240 of the shape surrounding the plate 230 is attached is disposed on the frame 210. The upper portion of the frame 210 is covered with a cap 260 to protect this structure. As shown in FIG. 3, the first magnet 220 and the first plate 230 may be fixed to the frame 210 by separate fixing members such as the rivet 270.

The PCB 280 is attached to the bottom surface of the frame 210 to apply current to the sound unit 200 and the vibration unit 300 to be described below. According to a preferred embodiment of the present invention, the PCB 280 of the small speaker unit 1 capable of providing stereo sound is preferably attached to the bottom surface of the vibration cap 310 of the vibration unit 300 to be described below. The attachment position is not limited thereto.

The sound unit 200 having the above-described structure generates an electromagnetic force between the first coil 240 and the first magnet 220 when a current is supplied from an external power source, and according to the frequency and output of the electrical signal, the first coil ( A force for moving the 240 up and down is acted on, and thus the diaphragm 250 to which the first coil 240 is attached moves together to generate a compression change of air to generate sound.

The vibration unit 300 is attached to the lower portion of the sound unit 200.

The vibration unit 300 includes a vibration cap 310 coupled to the lower portion of the sound unit 200; A second coil 320 attached to an inner bottom surface of the vibration cap 310; A ring 330 fitted around an inner circumference of the vibration cap 310; A leaf spring 340 which is supported by the ring 330 and is an elastic member disposed on the inner space of the vibration cap 310; Yoke 350 is elastically supported by the leaf spring 340; A second magnet 360 attached to the accommodation space of the yoke 350; And a second plate 370 attached to the second magnet 360.

The vibration cap 310 will be described with reference to FIGS. 3 and 4.

The vibration cap 310 is cylindrical and has a stage 312 formed on the wall 311 to be coupled to the lower frame 210 of the sound unit 200. The vibrating cap 310 may be made of a synthetic resin material such as a conductive material such as cold rolled steel sheet, aluminum and steel, or plastic, which is generally the same material as the frame 210 of the sound unit 200.

Vibration cap 310 may be fixed to the lower portion of the sound unit 200 by adhesive, as shown in Figure 3, the groove 211 is formed in the lower portion of the sound unit 200 outside the frame 210 It may be inserted from. The vibration cap 310 may be partially open to allow the second coil 320 to be described below to be discharged to the outside.

The second coil 320 is attached to the inner bottom of the bottom of the vibration cap 310, the diameter of the second coil 320 wraps around the second magnet 360 and the second plate 370 to be described later It's about to form.

The ring 330 is inserted into an inner wall of the vibrating cap 310 which is in contact with the bottom of the frame 210. The ring 330 has a predetermined width and thickness, and the diameter of the ring 330 may correspond to the inner diameter of the vibration cap 310 so that the ring 330 may be fit to the vibration cap 310.

The elastic member 340 is preferably a leaf spring 340 in the small speaker unit 1 that can provide a three-dimensional sound according to a preferred embodiment of the present invention, but is not limited thereto.

3 and 5 will be described the leaf spring 340 which is an elastic member 340 according to an embodiment of the present invention.

3 and 5, the leaf spring 340 has a diameter corresponding to the inner diameter of the vibrating cap 310 so that the leaf spring 340 may be disposed in the inner space of the vibrating cap 310 with the ring 330 interposed therebetween. The through-hole 341 is formed in a circular shape to seat the yoke, which will be described later, in the center portion of the leaf spring 340.

The leaf spring 340 is placed on the end 312 provided in the wall 311 of the vibration cap 310, in this state by the ring 330 inserted into the vibration cap 310 at the end 312 It is fixed so as not to be separated and is elastically supported on the inner space of the vibration cap 310.

As illustrated in FIG. 5, the leaf springs 340 are disposed with a plurality of plate portions 342 having an arc shape having a predetermined width spaced apart from each other by a predetermined interval. This structure allows the plate portion 342 to move up and down within a certain modulus of elasticity.

Referring to FIG. 3 again, the yoke 350 has a cylindrical shape having one end open, and an outer circumferential surface of the open end has a flange 351 that is vertically bent outward, and as shown in FIG. It is disposed to face the lower portion of the vibration cap 310. The closed end 352 of the yoke 350 is inserted between the through holes 341 of the elastic member 340, and one end opened by the flange 351 is connected to the plate portion 342 of the leaf spring 340. I get caught.

The yoke 350 may be elastically supported on the inner space of the vibration cap 310 by the leaf spring 340 because the flange 351 is adhesively fixed to the lower portion of the leaf portion 342 of the leaf spring 340 by bonding or the like. . The distance between the upper and lower ends of the yoke 350 does not touch the inner bottom of the frame 210 and the vibration cap 310 when the yoke 350 is supported by the leaf spring 340 and disposed inside the vibration cap 310. It is preferable that it is about degree.

A second magnet 360 is attached to the inner space of the yoke 350, and a second plate 370 is also attached to the upper portion of the second magnet 360. At this time, the second coil 320 attached to the inner bottom surface of the vibration cap 310 is disposed to surround the second magnet 360 to which the second plate 370 is attached.

A damper 380 may also be attached to the bottom of the sound unit 200 and the bottom of the vibrating cap 310. That is, when the yoke 350 inside the vibration unit 300 vibrates up and down by the leaf spring 340 in the state where the vibration unit 300 is attached to the lower portion of the sound unit 200, the yoke 350 Separate dampers 380 are respectively provided at the closed end 352 of the frame 210 in contact with the lower surface of the frame 210 and in the area where the second plate 370 inside the yoke 350 contacts the bottom surface of the yoke 350. ) May be attached. The damper 380 generally uses an elastic material such as sponge or rubber.

Hereinafter, the vibration generating operation of the small speaker unit according to a preferred embodiment of the present invention with reference to FIGS.

First, when a current is applied from an external power source, the sound unit 200 and the sound unit 200 and the first coil 240 and the second coil 320 of the vibration unit 300 are connected to the PCB 280 in series, so that the sound unit The same electrical signal is supplied to the 200 and the vibration unit 300.

When a current is supplied from an external power source, electromagnetic force is generated between the first coil 240 and the first magnet 220 of the sound unit 200, and the first coil 240 is vertically moved up and down according to the frequency and output of the electrical signal. As a force to move the force acts, the diaphragm 250 to which the first coil 240 is attached moves together, and compression fluctuation of air occurs to generate sound.

At this time, since the same electrical signal is supplied to the second coil 320 of the vibration unit 300, the electromagnetic force is generated in the vibration unit 300 by the same mechanism. Therefore, a force acts between the second magnet 360 and the second coil 320 disposed inside the vibration unit 300. In the sound unit 200, since the first magnet 220 is fixed, Although the first coil 240 is forced up and down, in the vibration unit 300, since the second coil 320 is fixed to the bottom surface of the vibrating cap 310, the second magnet 360 is forced.

At this time, since the yoke 350 to which the second magnet 360 is attached is elastically supported by the leaf spring 340 so as to be able to move up and down inside the vibration cap 310, the yoke 350 is the vibration cap 310. ) Will move up and down inside.

Since the vibration unit 300 does not include a vibrating plate that generates sound by vibration of air, the vibration unit 300 does not generate sound like the sound unit 200, but only generates vibration in accordance with air pressure change.

At this time, since the vibration unit 300 receives the same electric signal as the sound unit 200, the vibration unit 300 may generate vibrations corresponding to the output of the sound generated by the sound unit 200. Therefore, the user can feel the vibration corresponding to the output of the bass in the housing of the earphone that is inserted in the ear in the case of the high output bass, and the vibration corresponding to the treble in the housing of the earphone in the case of the high output of the low bass. So you can experience more three-dimensional sound.

In addition, when the yoke 350 inside the vibration unit 300 moves up and down, the shock caused by vibration may be alleviated by the damper 380 attached to the upper and lower ends of the yoke 350.

Therefore, the compact speaker unit capable of providing stereoscopic sound according to the preferred embodiment of the present invention as described above is provided with a sound unit and a vibration unit integrally in a housing without a separate vibrator, thereby providing stereoscopic sound. It is possible to provide a small speaker unit that can be.

The compact speaker unit capable of providing stereoscopic sound according to a preferred embodiment of the present invention also has a sound unit and a vibration unit integrated in the housing so that the housing vibrates in the user's ear, so that the volume is small and easy to carry, It is possible to provide a small speaker unit that can provide three-dimensional sound.

Although the present invention has been described as a specific embodiment, the present invention is not limited to the above-described embodiment, and those skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Anyone can make a variety of variations.

1 is a plan view of a headphone device according to the prior art;

Figure 2 is a schematic perspective view showing the assembled appearance of a small speaker unit that can provide a three-dimensional sound in a preferred embodiment of the present invention;

3 is a cross-sectional view of a small speaker unit capable of providing a stereo sound according to a preferred embodiment of the present invention;

4 is an enlarged cross-sectional view of a vibration cap according to a preferred embodiment of the present invention;

5 is a plan view of a leaf spring according to a preferred embodiment of the present invention; And

6 is an enlarged cross-sectional view of a vibration unit according to a preferred embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: housing 200: sound unit

210: frame 220: first magnet

230: first plate 240: first coil

250: diaphragm 260: cap

270: rivet 280: PCB

300: vibration unit 310: vibration cap

320: second coil 330: ring

340: leaf spring 350: yoke

360: second magnet 370: second plate

380: damper

Claims (5)

As a small speaker unit, A housing inserted into the ear of the user; A sound unit mounted in the housing and generating sound by electromagnetic force; And And a vibration unit attached to a lower portion of the sound unit and receiving the same electrical signal as the sound unit and vibrating in the housing according to the sound of the sound unit. The method of claim 1, wherein the vibration unit, A vibration cap coupled to a lower portion of the sound unit; A coil attached to an inner bottom of the vibrating cap; A ring fitted around an inner circumference of the vibrating cap; An elastic member supported by the ring and disposed on an inner space of the vibration cap; A yoke elastically supported by the elastic member; A magnet attached to the accommodation space of the yoke; And Small speaker unit capable of providing a three-dimensional sound, characterized in that it comprises a plate attached to the magnet. [3] The compact speaker unit of claim 2, further comprising a damper attached to a bottom surface of the sound unit and a bottom surface of the vibrating cap. [4] The compact speaker unit of claim 2 or 3, wherein the elastic member is a leaf spring. [4] The compact speaker unit of claim 2 or 3, wherein the vibrating cap has a stage at a wall, and the elastic member is supported by the stage.