KR100616317B1 - Portable telephone speaker - Google Patents

Abstract

The present invention relates to a speaker for a mobile phone to increase the low sound pressure (音 壓, sound pressure), the present invention is made of an open cylindrical shape, the through-hole communicating with the outside is formed on one side wall Is formed on the upper surface of the body, the body and the connection terminal and the spring formed in the outer bottom portion, the frame screen (Frame Screen) formed on one side of the bottom of the body, the yoke screen (Yoke Screen) is installed on the other bottom of the body, Ring type magnet which vibrates the diaphragm according to the signal input, Ring type plate which vibrates the diaphragm according to the signal input on the ring type magnet, and spaced apart from the inner circumferential surface of the ring type magnet. Inserted between the vibrating circular magnet, the circular plate made of metal on the circular magnet, and the ring type magnet and the circular magnet to vibrate according to signal input It is configured as a voice coil to vibrate.

Sound, Diaphragm, Breakaway Cap, Speaker, Cell Phone, Yoke Screen

Description

Mobile phone speaker {Portable telephone speaker}             

1 is a cross-sectional view of a typical mobile phone speaker,

2 is an exploded view of a speaker for a mobile phone according to the present invention;

3 is a cross-sectional view of the mobile phone speaker according to the present invention.

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

100: grill screen 102: separation prevention cap

104: diaphragm 106: voice coil

108: round plate 110: round magnet

114: Ring Type Magnet

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker for a cellular phone, and more particularly, to a speaker for a cellular phone that can increase a low sound pressure.

In general, a speaker is a type of sound device that converts an electric signal into vibration of a diaphragm to generate a small density wave in the air to radiate sound waves. The bell or melody that is input is made available to people. Such a speaker is usually used as a large vocal means that is connected to an audio or amplifier to greatly amplify the volume, but is also widely used as a small vocal means by greatly reducing the size.

The reduced speaker as described above is particularly applied to small communication devices such as mobile phones and pagers.

In addition, as shown in FIG. 1, a typical speaker for a mobile phone includes an iron plate 12 having upper and lower portions serving as an anode inside the frame 10 covered by the covers 14 and 15, respectively. Wye, yo (13) to form a path and the passage of the magnetic flux (요) and the yoke-shaped yoke (13), which acts as a kind of frame combined with each other in the form of concave-convex, but the annular permanent magnet on the yoke (13a) The iron portion 12a of the plate is coupled to the inner circumference of the annular permanent magnet via the intervening member (11).

Then, the first sound wave generating means for generating a listening sound by the magnetic force of the annular permanent magnet 11 and the second sound wave generating means for generating a ring tone sound is provided.

The first voice coil 20 is wound around the convex portion 12a of the plate at the inner circumference of the annular permanent magnet 11 as a first sound wave generating means, and the first voice coil is partially exposed to the outside of the yoke 13. do.

The second voice coil 30 is wound around the outer periphery of the annular permanent magnet 11 by the second sound wave generating means, and the second voice coil is partially exposed to the outside of the plate 12.

Here, the current applied to the first voice coil 20 is an electrical signal applied to generate a listening sound during a call, and the current applied to the second voice coil 30 is an electrical signal applied to generate a ring tone. to be.

A first diaphragm 21 having both ends fixed to the frame 10 is connected to the first voice coil 20, and both ends are fixed to the frame 10 at the second voice coil 31. The second diaphragm 31 is connected and installed.

Here, the first diaphragm 21 is a vibration source for generating a reception sound, and the second diaphragm 31 is a vibration source for generating a ring sound.

The speaker of the mobile phone having the above-described configuration is a type of Fleming, which is a principle in which electromagnetic force is generated in a direction perpendicular to the magnetic field by a magnetic field formed by the annular permanent magnet 11 and a current applied to the first and second voice coils 20 and 30. By using the left-hand rule, the first and second voice coils 20 and 30 move up and down by the electromagnetic force, and the first and second diaphragms 21 and 31 move up and down in association with the surrounding air layer. Vibration is applied to generate sound waves so that electrical signals are converted into voice signals.

In more detail, when a current that is an electrical signal for generating a reception sound when a call is applied to the first voice coil 20, the yoke 13 serves as a plate, and the plate 12 serves as a yoke, so it is flammed. According to the left hand law of the first voice coil 20 is moved up and down, the first voice coil 20 moves the first diaphragm 21 up and down to apply vibration to the surrounding air layer to generate sound waves It performs the function of listening for an incoming tone during a call.

In addition, when a current, which is an electrical signal for generating a ring tone when a call is received, is applied to the second voice coil 30, the second voice coil 30 moves up and down according to Fleming's left hand law, and the second voice coil The second diaphragm 31 moves up and down to apply vibration to the surrounding air layer to generate sound waves, thereby generating a ring sound.

However, such a conventional speaker for a mobile phone uses only one permanent magnet, so that the user cannot hear the bass sound accurately.

Therefore, in order to hear the bass accurately, there was a need to use a mobile phone closely to the ear.

Accordingly, the present invention has been proposed to solve the above-mentioned problems according to the prior art, and an object of the present invention is to add a ring-type permanent magnet to a permanent magnet, which is used in the prior art, and thus, a low-frequency sound pressure. It is to provide a speaker for the mobile phone to raise the bass accurately.

A speaker for a mobile phone according to the present invention for achieving the above object is a diaphragm for generating sound, a separation preventing cap for preventing the separation of the diaphragm and a departure screen having a grill screen located on the upper surface of the separation prevention cap 102 In the speaker for a mobile phone,

A body having an upper cylindrical shape and having a through hole communicating with the outside on one side wall, and having a connection terminal and a spring formed on an outer bottom thereof; A frame screen formed on one side of the bottom of the body; A yoke screen (Yoke Screen) made of a metal material which is installed on the bottom of the other side of the body to be magnetic; Ring type magnets (Magnet) formed on the upper surface of the body for vibrating the diaphragm in accordance with the signal input; A ring type plate which vibrates a diaphragm in accordance with a signal input while holding magnetism on the ring type magnet; A circular magnet spaced apart from an inner circumferential surface of the ring type magnet and vibrating a diaphragm according to a signal input; A circular plate made of a metal material capable of being magnetic on the circular magnet; It is composed of a voice coil inserted between the ring type magnet and the circular magnet to vibrate the diaphragm in accordance with the signal input.

Hereinafter, a preferred embodiment of a speaker for a mobile phone according to the present invention will be described with reference to the accompanying drawings.

2 is an exploded view of a speaker for a mobile phone according to the present invention, Figure 3 is a combined cross-sectional view of the speaker for a mobile phone according to the present invention.

As shown in Figures 2 to 3, the speaker for a mobile phone according to the present invention is formed in a cylindrical shape with an open top, a through-hole 119 communicating with the outside is formed on one side wall, connected to the outer bottom portion It has a body 118 with a terminal 120 and a spring 122 formed.

In this case, a frame screen 124 is formed on one bottom surface of the body 118, and a yoke screen 126 made of a metal material having magnetic properties is installed on the other bottom surface of the body 118. do.

In addition, the upper surface of the body 118 is provided with a ring-type magnet (Magnet) 114 having a through-hole 113, the magnetic hole on the ring-type magnet 114 as well as the through-hole 111 The ring type plate 112 of metal material which has is provided.

On the other hand, the circular magnet 110 is installed in the through hole 113 is spaced apart from the inner circumferential surface of the ring-type magnet 114, the circular plate 108 of a metallic material that can be magnetic on the circular magnet 110 is Is installed.

The voice coil 106 is installed in the through hole 113 between the ring type magnet 114 and the circular magnet 110.

In addition, when the high frequency signal is applied to the upper portion of the voice coil 106 is provided with a diaphragm 104 to generate sound while vibrating in interaction with the magnets (114, 110).

Then, the separation prevention cap 102 to prevent the separation of the diaphragm 104 is installed, the grill screen 100 is installed on the upper surface of the separation prevention cap 102.

Referring to the operation of the speaker for a mobile phone configured as described above is as follows.

First, when a voice signal, that is, an electrical signal is applied through the connection terminal of the signal input unit, the electrical signal is applied to the voice coil 106 through the leader line.

Ring-type magnets 114 and circular magnets 110 provided around the body 112 by the electrical signal applied to the voice coil 106 and the plate 112, 108 and yoke 126 of the periphery of the Fleming The left hand law generates a predetermined physical force that vibrates up and down.

The voice coil 106 and the diaphragm 104 connected to the voice coil 106 are vibrated by the physical force.

Sound is generated according to the vibration of the diaphragm 104.

Accordingly, the circular magnet 110 is installed in the through hole 113 of the ring type magnet 114, and the voice coil 106 is disposed in the through hole 113 between the ring type magnet 114 and the circular magnet 110. By installing the bar, the voice coil 106 can be vibrated strongly according to the signal input to increase the low sound pressure (音, sound pressure).

As described above, the present invention inserts the through-holes of the ring-type permanent magnets into the permanent magnets used in the existing bar, which strongly vibrates the voice coil according to the signal input. It works.

Claims (1)

The diaphragm 104 which generates sound, the separation prevention cap 102 for preventing the separation of the vibration plate 104, the grill screen 100 is located on the upper surface of the separation prevention cap 102, the upper portion is made of an open cylindrical shape And a through hole 119 communicating with the outside on one side wall, and a body 118 having a connection terminal 120 and a spring 122 formed on an outer bottom thereof, and formed on an upper surface of the body 118. Ring type magnet (114) for vibrating the diaphragm 104 in accordance with the signal input, and ring type plate for vibrating the diaphragm (104) in accordance with the signal input while holding the magnetism on the ring type magnet (114) (112), a circular magnet 110 is spaced apart from the inner circumferential surface of the ring-type magnet 114 and vibrating the diaphragm 104 in accordance with the signal input, and a metal that can be magnetized on the circular magnet (110) Between the circular plate 108 of the material, and the ring type magnet 114 and the circular magnet 110 In the speaker for a mobile phone having a voice coil 106 is inserted into the vibrating plate 104 to vibrate in accordance with the signal input, A frame screen 124 formed on one bottom surface of the body 118; Speakers for mobile phones, characterized in that the yoke screen (126) of the metal material is installed on the bottom of the other side of the body 118 to be magnetic.

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