KR20020006289A - Vibration speaker - Google Patents

Abstract

PURPOSE: An oscillating speaker is provided to achieve reduction of manufacturing costs and compact products and to prevent interference between sounds from a plate spring and sounds from a diaphragm by bringing an oscillating function and a speaker function together in a speaker and constituting a sound barrier in the speaker. CONSTITUTION: An oscillating speaker comprises a case(10) in which yokes are mounted elastically to a plate spring(30). A magnet(40) is installed at inside of the yokes. A sound barrier(50) in bellows shape is interposed between the yoke and case to block sounds transferred from the plate spring. A diaphragm(60) is fixed to an upper portion of the yokes. A first coil(61) extends downward from one side of the under face of the diaphragm closely to the magnet of the yokes. On a lower side of the case is positioned a lower plate(70) in which a second coil(71) is fixedly mounted to generate oscillation. When high frequency signal is inputted to the first coil, the diaphragm is oscillated to generate sounds by electromagnetic force between magnet and the coil. Sounds from the plate spring is blocked by sound barrier. When low frequency signal is inputted to the first coil, the yokes are oscillated to generate oscillation by electromotive force between magnet and the coil.

Description

Vibration Speaker

The present invention relates to a speaker function for delivering a ring tone and a ring tone, and a vibrating speaker configured to perform a vibration function as an incoming signal.

One of the most remarkable things in the development of modern communication technology is the emergence of personal mobile communication, the most representative of which is the mobile phone and pager.

In such a mobile communication device, a mobile phone is capable of all handsets, while a pager allows only a function of a received message. The main common feature of these devices is an incoming signal.

In other words, the messages transmitted by them during transmission are expressed by voice or text, but before the message to be transmitted is input to the other party's mobile communication device, that is, the mobile phone or pager as an incoming signal.

The bell is most commonly used as such an incoming signal.

There are many different kinds of bells like this, which can be divided into melodies and simple repetitive sounds.

Therefore, the user arbitrarily selects one type of bell and uses it as the ringing tone, and the selected ringing tone can be adjusted according to the noise level of the surroundings.

However, even if you adjust the volume of the ringtone in this way, because it is a cause of noise in public places, the ringtone is equipped with a bell function and a vibration function.

In other words, the vibration function is only known to the user, so there is an advantage of preventing noise damage. The vibration function can be used by simply switching the incoming function of the device from the bell mode to the vibration mode.

As a result, a speaker for transmitting an incoming call or a sign language and a vibration inducing means for the vibration mode are required, respectively.

However, in the case of providing the speaker and the vibration inducing means for the vibration mode, respectively, not only does not only increase the unit cost, but also causes the problem that the compactness of the product is caused, and in recent years, a vibration speaker capable of performing all of these functions It is widely proposed.

Figure 1 shows an example of such a vibration speaker.

It has a case 1.

Inside the case 1, the yoke 2 is elastically installed in a plurality of upper and lower leaf springs 3 and 3 ', and a magnet 4 is provided inside the center of the yoke 2.

The diaphragm 5 is provided above the case 1, and the coil 6 extends from the diaphragm 5 so as to be adjacent to the magnet 4 of the yoke 2.

A lower plate 7 is located below the case 1, and the vibration plate 8 is fixedly installed on the lower plate 7.

In the conventional vibrating speaker having such a configuration, when a high frequency signal is input to the coil 6, the diaphragm 5 is finely shaken by the electromagnetic force between the magnets 4 and 8 and the coil 6, so that a sound is generated and thus the speaker. It will be used for sound.

When a low frequency signal is input to the coil 6, the yoke 2 is resonated by electromotive force generated between the coil 6 and the magnets 4 and 8, and the resonance of the yoke 2 is caused by the leaf spring 3. By passing through the case (1) is to perform the vibration function.

However, in such a conventional vibrating speaker, when performing the speaker function, the vibration sound generated on the upper and lower leaf springs (3, 3 ') is transmitted to the upper, that is, transmitted to the diaphragm (5) to generate sound interference between each other This causes a problem that the bass characteristics deteriorate, in particular.

That is, since the shape of the upper and lower leaf springs 3 and 3 'has a space portion in which the sound can be moved upward, as shown in FIG. Sound and interference generated in the diaphragm 5 is generated, resulting in a problem that does not perform an effective speaker function.

The present invention has been made to solve such a conventional problem, and provides a vibrating speaker that can perform an effective speaker function by preventing the sound generated in the leaf spring from interfering with the sound generated on the diaphragm. There is a purpose.

1 is a cross-sectional view showing a conventional vibration speaker,

2 is a plan view showing an extract of a leaf spring in the conventional vibration speaker,

3 is a cross-sectional view of a vibrating speaker according to the present invention;

Figure 4 is a perspective view showing an extract of the blocking film in the vibration speaker according to the present invention.

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

10: case 20: yoke

30: leaf spring 40: magnet

50: blocking film 60: diaphragm

61: coil 70: lower plate

71: coil

In order to achieve the above object, a vibration speaker according to the present invention includes a case; A yoke having a bottom surface elastically installed on the case through a leaf spring, and having a magnet provided therein; A blocking film for fixing an inner side of the upper outer circumferential surface of the yoke and an outer side of the yoke on a case, and blocking a sound passing through the leaf spring from being transferred upward; A diaphragm having both ends fixed to an upper end of the yoke, and a coil extending on one side thereof so as to be adjacent to the magnet of the yoke; And a lower plate positioned below the case and provided with a coil for generating vibration on an upper surface thereof.

One preferred feature of the present invention is that the barrier film is formed to form a valley with a mountain at a predetermined interval from the inside toward the outside.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of a vibration speaker according to the present invention will be described in detail.

3 is a cross-sectional view of a vibration speaker according to the present invention, Figure 4 is a perspective view showing an extract of the blocking film.

As shown therein, the vibration speaker according to the present invention includes a case 10.

Inside the case 10, the yoke 20 is elastically installed at one leaf spring 30 fixed to the lower surface of the case 10, and a magnet 40 is provided inside the center of the yoke 20.

Meanwhile, the upper outer circumferential surface of the yoke 20 is supported by the case 10 through the blocking film 50, that is, the inner circumferential surface of the blocking film 50 is fixed to the upper outer circumferential surface of the yoke 20, and the outer circumferential surface is the case 10. The yoke 20 is supported by being fixed to the inner surface of

The shielding film 50 functions to block the sound transmitted from the leaf spring 30 on the lower side, and in particular, to form an acid and valley continuously from the inner side to the outer side for the effective sound blocking effect, that is, to form a wrinkle shape. It is formed to have.

In other words, the lower surface of the yoke 20 is supported on the case 10 by the leaf spring 30, and the upper surface of the yoke 20 is supported on the case 10 by the blocking film 50.

On the other hand, since the yoke 20 is supported by one leaf spring 30, there is a concern that the vibration amount is reduced, in order to prevent this, the elastic modulus of the leaf spring 30 should be formed of a material having a high elastic modulus.

Both sides of the diaphragm 60 are fixed to the upper end of the yoke 20, and the coil 61 is extended to be adjacent to the magnet 40 of the yoke 20 from one lower surface of the diaphragm 60.

The lower plate 70 is positioned below the case 10, and a coil 71 for generating vibration is fixed to the lower plate 70.

In the vibration speaker according to the present invention having such a configuration, when a high frequency signal is input to the coil 61, the vibration plate 60 is finely shaken by the electromagnetic force between the magnet 40 and the coil 61, so that sound is generated. It will be used as speaker sound.

As described above, when performing the speaker function, the fine spring sounds are generated even in the leaf spring 30 itself supporting the lower surface of the yoke 20, and the generated sounds are moved upward, that is, toward the diaphragm 60.

However, the sound generated in the leaf spring 30 supports the upper surface of the yoke 20 and is blocked by the blocking film 50 extending to form a valley with the hill so that the sound and interference on the diaphragm 60 are not generated. .

Thus, effective speaker functions can be performed.

When a low frequency signal is input to the coil 61, the yoke 20 is resonated by electromotive force generated between the coil 61 and the magnet 40, and the resonance of the yoke 20 causes the leaf spring 30 to be resonated. It is to be transmitted to the case 10 to perform the vibration function.

At this time, in performing the vibration function, as well as the coil 71 on the lower plate 70 located below the case 10 to achieve the resonance necessary for vibration, the leaf spring 30 itself is sufficient elasticity By having a coefficient, an improved resonance effect can be obtained.

On the other hand, the above-described embodiment is merely described one preferred embodiment of the present invention, the scope of application of the present invention is not limited to such, and can be changed as appropriate within the scope of the same idea. For example, the shape and structure of each component shown in the embodiment of the present invention can be modified.

According to the vibration speaker according to the present invention as described above, when performing the speaker function according to the high-frequency signal input, the sound generated on the leaf spring and the sound on the diaphragm is blocked through the blocking film supporting the upper surface of the yoke By doing so, there is an advantage of performing an effective speaker function.

Claims (2)

A case; A yoke having a bottom surface elastically installed on the case through a leaf spring, and having a magnet provided therein; A blocking film for fixing an inner side of the upper outer circumferential surface of the yoke and an outer side of the yoke on a case, and blocking a sound passing through the leaf spring from being transferred upward; A diaphragm having both ends fixed to an upper end of the yoke, and a coil extending on one side thereof so as to be adjacent to the magnet of the yoke; And a lower plate positioned below the case and provided with a coil for generating vibration on an upper surface thereof. The vibrating speaker of claim 1, wherein the barrier layer is formed to have a peak and a valley at a predetermined interval from the inner side to the outer side.