KR20040100198A - message-receiving apparatus of electronic equipment having a separated yoke - Google Patents

Abstract

PURPOSE: A call incoming device of an electronic apparatus using a separated yoke equipped with a speaker and a vibration motor is provided to detect easily a call incoming state by forming a micro speaker and a coin-shaped vibration motor with one body. CONSTITUTION: A micro speaker includes a yoke, an anisotropic magnet, a plate, a vibration plate, and a voice coil. The yoke(5) is formed with a ring-shaped yoke including an internal yoke and an external yoke. The anisotropic magnet(4) for speaker has the same center axis as the yoke and is installed at a top part of the external yoke. The plate(3) has the same center axis as the yoke and is installed at a top art of the anisotropic magnet for speaker. The vibration plate(1) has the same center axis as the yoke and is fixed to a top part of a frame. The vibration plate is formed with a shape of dome. The voice coil(2) is coupled to a bottom face of the vibration plate and is inserted into a magnetic gap formed between curved parts of the internal yoke. A coin-shaped vibration motor includes a lower plate, a soft PCB, a magnet for vibration motor, a rotary shaft, and an eccentric rotor. The lower plate(17) is used for supporting the frame(15), the yoke, the magnet for vibration motor, and the rotary shaft. The soft PCB(13) is installed on an upper surface of the lower plate. The magnet(12) for vibration motor has the same center axis as the yoke and is installed on the upper surface of the lower plate. The rotary shaft(10) is rotatably coupled to a fixing groove of the yoke and a fixing groove of the soft PCB. The eccentric rotor(11) is installed at the rotary shaft.

Description

Message-receiving apparatus of electronic equipment having a separated yoke}

The present invention relates to an apparatus for receiving an electronic device having a separate yoke, and more particularly, a speaker is provided at the upper end of the separated yoke and a vibration motor is provided at the center of the lower end of the electronic device, such as a mobile phone. The present invention relates to a receiving device for an electronic device having a separate yoke for selectively outputting the vibrations or sounds.

Due to the development of various electronic devices, more specifically, communication devices, in recent years, mobile phones or PDAs that can be carried at any time are frequently used to satisfy users' information needs. The speaker or vibration motor that can inform the reception status is mounted, of which vibration motor is for notifying the reception status and the reception status of information only to the user during the meeting or in various public places without disturbing others.

The vibration motor is driven when the phone is received or various information is received to vibrate a terminal such as a mobile phone or PDA so that the user can feel the vibration and know the incoming state of the phone and the reception state of various information.

1 is a partial cutaway view of a mobile phone 103 in which the above-mentioned speaker and vibration motor, that is, the micro speaker 101 and the coin-type vibration motor 102 are incorporated.

Vibration motor 102 and micro-speaker 101 occupy considerable space in mobile phone 103, which is based on conventional black-and-white LCD and sound output of less than 16 chords, and adds more than 17 phi speaker and color display function. In order to secure more space.

In order to solve the above-mentioned space problem, a micro speaker having its own vibration function has recently been proposed in Japan or Korea.

2 is a cross-sectional view illustrating a conventional device for receiving an electronic device having a vibration function and a speaker function. An air hole 111 is formed in the center of the lower plate 110 to form a sound. The diaphragm 112 is provided on the upper part to be spaced apart from the lower plate 110 by a predetermined distance in a vibrable state through the first elastic support part 114. In addition, a pair of coils 113 corresponding to each other are provided on an upper portion of the diaphragm 112. Each coil 113 has a semicircular arc shape, and is provided with an upper case 115 covering an upper portion of the lower plate 110. The upper case 115 having the magnet 116 corresponding to the coil 113 at the bottom thereof has a shape covering the coil 113, and the upper case 115 is vibrated by a plurality of second elastic support parts 117. It is disposed above the lower plate 110 in a state.

118, which is not described in the drawing, is a cover 118 made of a flexible material that connects the outer side of the lower plate 110 and the upper case 115 to prevent foreign substances from flowing between the lower plate 110 and the upper case 115. It serves to block.

Referring to the operation of the receiving device of the electronic device having the above configuration, when a low-frequency alternating current is applied to the coil 113 from the outside, the polarity of the coil 113 and the magnet 116 formed under the upper case 115 Since the crosses are opposite to each other, the upper case 115 performs a seesaw movement (moving from side to side in the drawing up and down in the drawing) with the magnet 116 as the center axis of the center of the magnet 116 where the two polarities meet. In this process, vibrations are generated.

However, the conventional device for receiving an electronic device has a problem in that an AC current having a low frequency corresponding to the resonant frequency of the first elastic support part 114 and the second elastic support part 117 must be applied. ) And the elastic modulus of the second elastic support 117 is changed over time, there is a problem that the frequency of the AC power to be applied to be different. That is, the elastic support that vibrates when an alternating current of about 147 Hz is initially applied does not vibrate due to a change in the elastic modulus after a predetermined time elapses.

Therefore, in order to use the above-mentioned device for receiving an electronic device, a separate driving device is required for converting an alternating current into a corresponding frequency in consideration of a change in the elastic modulus according to the use time in advance.

Accordingly, the present invention for solving the above problems is to configure the micro-speaker and the vibration-induced coin-type vibration motor as a single unit for the sound generation to convert information such as the incoming state of the electronic device such as a mobile phone or PDA into sound or vibration It is an object of the present invention to provide a receiving device for an electronic device having a separate yoke for selectively outputting (displaying).

In addition, another object of the present invention is to configure the coin-type vibration motor in the micro-speaker integrally to minimize the volume of the receiver device to minimize the space occupied by the receiver device in the process of manufacturing electronic devices such as mobile phones and PDAs The present invention provides a receiving device for an electronic device having a separate yoke.

Further, another object of the present invention is to maintain the elastic force of the elastic member for vibration generation without providing a separate drive device, unlike the conventional receiving device of the vibration motor for vibration generation regardless of time An object of the present invention is to provide a receiver of an electronic device having a separate yoke for maintaining performance.

1 is a partial cutaway view of an electronic device (mobile phone) incorporating a conventional micro speaker and a coin-type vibration motor.

2 is a cross-sectional view of a receiver of a conventional electronic device.

Figure 3 is an exploded perspective view showing a receiving device of the electronic device having a separate yoke according to the present invention.

4 is a cross-sectional view showing a receiving device of an electronic device having a separated yoke according to the present invention.

Fig. 5 is a sectional view showing another embodiment of the receiving device for the electronic device with the separated yoke according to the present invention.

※ Explanation of code about main part of drawing ※

1: diaphragm 2: voice coil

3: plate 4,12: magnet

5,6,7,25,26,27: York 8: through-hole

9,18,29,38: fixing groove 10,30: rotating shaft

11,31: Rotor 13,16: printed circuit board

14 brush 15 frame

17,37: lower plate 20: coin type vibration motor

33: upper case 34: lower case

An apparatus for receiving an electronic device having a separate yoke according to the present invention for achieving the object as described above, by selectively driving a micro speaker for sound generation or a vibration motor for vibration generation, In the receiver of the electronic device having a separate yoke to display a variety of information, the micro-speaker is a ring formed at a predetermined interval between the cap-shaped inner yoke and a plurality of through holes formed with a fixed groove in the bottom center It is made of an outer yoke of the shape and when the inner yoke and the outer yoke integrally assembled, the inner yoke and the outer yoke is configured to maintain a distance of a predetermined distance, and the center is located on the same axis as the center of the yoke, Anisotropic magnet for a speaker mounted on the upper outer side of the outer yoke, and the center of the same axis and the center of the yoke A ring-shaped plate mounted on an upper portion of the anisotropic magnet for the speaker to form a magnetic circuit generating a magnetic gap by forming a magnetic gap between the bent portion of the inner yoke and a center of the yoke; It is centered on the same axis as the anisotropic magnet for the outer yoke and the speaker and the outer circumferential surface is fixed to the upper surface of the frame surrounding the plate and the cylindrical shape coupled to the bottom of the diaphragm and coupled to the bottom of the diaphragm It is made of a wound voice coil, the coin-type vibration motor, the lower plate for supporting the frame and yoke, the magnet for the vibration motor and the rotating shaft, and is located on the upper portion of the lower plate, a fixed groove is formed in the center, Flexible printed circuit board with a brush standing at a predetermined angle to transmit a drive signal to the rotor And, the center is located on the same axis as the center of the yoke, both ends of the ring-shaped vibration motor magnet mounted on the upper portion of the lower plate, the fixing groove of the bottom of the yoke and the fixing groove of the printed circuit board And an eccentric rotor mounted on the rotating shaft so as to be rotatable by a driving shaft transmitted through the brush and the brush.

In addition, in the receiving device of the electronic device having a separate yoke according to the present invention, one side of the frame is electrically connected to the voice coil and a brush connected to the rotor, respectively, the voice coil to generate sound It is preferable that a printed circuit board having a plurality of feed terminals for selectively supplying a driving signal and a driving signal for generating vibration due to rotation of the eccentric rotor are formed in the brush.

In addition, in the receiving device of the electronic device having a separate yoke according to the present invention, the coin-type vibration motor, a fixing groove is formed in the center of the bottom and accommodates the rotary shaft and the rotor and the magnet for the vibration motor A lower case is further provided with an upper case and a lower case coupled to the bottom of the upper case and mounted on the upper surface of the upper side of the upper case, and both ends of the rotating shaft are seated on the fixing groove of the upper case and the lower case. It is preferable to be coupled to each of the rotating grooves of the fixing material.

Hereinafter, the present invention will be described in detail.

Figure 3 is an exploded perspective view showing a receiving device of the electronic device having a separate yoke according to the present invention, Figure 4 is a cross-sectional view showing a receiving device of the electronic device having a separate yoke according to the present invention, Figure 5 It is sectional drawing which shows another Example of the receiver of the electronic device provided with the separated yoke by this invention.

3 and 4, the receiving device of the electronic device having a separate yoke according to the present invention, the micro speaker and the coin-type vibration motor is integrally formed to have a minimum volume.

First, the configuration of the micro speaker occupying the upper part and the outer part in the overall configuration will be described, which has a yoke (5) that divides the micro speaker and the coin-type vibration motor and serves as a skeleton of the micro speaker and the coin-type vibration motor. (5) is composed of a cap-shaped inner yoke 6 and a ring-shaped outer yoke 7.

A fixing groove 9 for coupling with the rotation shaft 10 is formed at the center of the bottom surface of the inner yoke 6 of the yoke 5, and the outer yoke 7 is formed with an outer yoke by using a bonding material. When the bottom plate 17 is attached to the bottom of the 7) or the anisotropic magnet 4 for the speaker is attached to the top of the outer yoke 7, a plurality of through holes 8 are provided at regular intervals to increase the bonding force therebetween. When the inner yoke 6 and the outer yoke 7 are integrally coupled to each other, the inner yoke 6 and the outer yoke 7 have a predetermined distance between the inner yoke 6 and the outer yoke 7.

A ring-shaped speaker anisotropic magnet 4 is mounted on the upper side of the outer yoke 7 of the yoke 5, and a ring-shaped plate 3 is installed on the inner side of the speaker anisotropic magnet 4. A magnetic gap is formed between the outer circumferential surface of the yoke 6, that is, the bent portion and the plate 3.

Here, the anisotropic magnet 4 for the speaker 4 and the plate 3 can form a laminated structure of the outer yoke 7-the anisotropic magnet 4 for the speaker plate 3 by diluting and bonding the bonding material of the release. have.

By making the height of the inner yoke 6 and the height of the plate 3 bonded on the speaker anisotropic magnet 4 the same, a magnetic gap can be effectively formed, and the inner yoke 6 and the speaker anisotropic magnet ( 4) The voice coil 2 attached to the bottom surface of the diaphragm 1 whose outer peripheral surface is fixed to the upper part of the frame 15 in the magnetic gap formed between them is inserted by predetermined depth.

More specifically, the plate 3, the anisotropic magnet 4 and the yoke 5 for the speaker, i.e., the inner yoke 6 and the outer yoke 7 form one magnetic circuit, and a magnetic gap formed in the magnetic circuit. The voice coil 2 is inserted into it.

In addition, although not shown in the drawings, the cover 3 is formed with a plurality of sound holes to protect the diaphragm 1 and to output the sound generated by the up and down vibration of the diaphragm 1 to the outside. It can be fixed to the outer peripheral surface of the).

The voice coil 2 supplied with the driving signal from an electronic device such as a conventional cellular phone or PDA forms an alternating rotating magnetic field. Therefore, a force acting up and down between the voice coil 2 and the magnetic circuit is generated, thereby causing the dome-shaped diaphragm 1 fixed on the upper portion of the voice coil 2 to vibrate up and down to generate a small wave. As a result, sound is produced.

Next, referring to the coin-type vibration motor, the rotating shaft 10 is located in the lower space of the inner yoke 6, that is, the center of the inner groove of the yoke 5, and one side of the rotating shaft 0 is the inner yoke 6. ) Is fixed to the fixing groove (9) formed in the center of the bottom surface, the other side is mechanically fixed to the fixing groove (18) formed in the flexible printed circuit board 13 mounted on the upper portion of the lower plate (17). . Here, the vibrating motor magnet 12 and the lower plate 17 may be bonded to each other by diluting the bonding material and may also be bonded using a coupling member such as a bolt.

In addition, the rotation shaft 10 is positioned up and down to enable the rotation of the rotor 11 at the center of the rotor 11. Here, the rotor 11 is an eccentric rotor having different weights on the left and right sides with respect to its center, and is configured to generate vibrations when rotating by eccentricity. The eccentric rotor may be manufactured by asymmetrically arranging a plurality of coil bundles on an upper portion of a printed circuit board having copper foils formed on both sides thereof. The copper foil formed on the lower portion of the printed circuit board serves as a commutator and receives a driving current through the brush 14.

The upper portion of the lower plate 17 has a ring-shaped vibration motor magnet 12 having the same center as the rotation shaft 10, and is spaced apart from the rotor 11 by a predetermined distance. In addition, the lower plate 17 is provided with a printed circuit board 13 for supplying a drive current received from an electronic device such as a mobile phone or a PDA to the coil of the rotor 11, and the flexible printed circuit board ( The upper portion of the 13 is coupled with a brush 14 for supplying a drive current to the coil located in the upper portion of the rotor 11 in contact with the commutator located in the lower portion of the rotor (11).

The frame 15 is formed on the outer circumferential surface of the plate 3, the anisotropic magnet 4 for the speaker, the outer yoke 7 and the lower plate 17 by using an injection made of non-magnetic plastic resin. The frame 15 may be formed on an outer circumferential surface of the upper portion of the lower plate 17, but preferably, protrusions are formed vertically on the upper and lower portions of the frame 15 to lower the upper and lower plates 17 of the plate 3. Can support each. In addition, by forming a jaw lower than the outer circumferential surface on the upper inner circumferential surface of the frame 15, it is possible to fix the outer circumferential surface of the diaphragm 1 or the outer circumferential surface of the cover (not shown).

Here, the non-magnetic plastic resin is characterized by being injected at a pressure of 65 kg / ㎠ to 75 kg / ㎠ at a molding temperature of 220 ℃ to 240 ℃ to form a frame (15).

In addition, one end of the frame 15 is soldered to the front end portion so as to be electrically connected to the voice coil 2 and the brush 14, and a flexible signal to which a driving signal for driving the voice coil 2 and the rotor 11 is applied. The printed circuit board 16 is coupled. At this time, the coupling of the frame 15 and the printed circuit board 16 may be bonded using a separate bonding material, or may be integrally molded in the process of forming the frame 15.

In more detail, a feed terminal electrically connected to the voice coil 2 is formed at an upper portion of the printed circuit board 16, and a brush standing at the rotor 11, that is, at the printed circuit board 3, is formed at the lower portion thereof. A feed terminal electrically connected to 14 is formed, so that drive signals can be supplied simultaneously or selectively to the voice coil 2 and the rotor 11.

The driving signal applied to the voice coil 2 through the feed terminal of the printed circuit board 16 is an acoustic signal such as a ring tone for notifying a call to the user, and is rotated through the feed terminal of the printed circuit board 16. The driving signal applied to the electron 11 is a direct current for generating vibration. On the other hand, in the case of a clamshell mobile phone among various electronic devices, the receiver according to the present invention may be incorporated in a folder portion and used as a receiver. When the receiver according to the present invention is used as a receiver, the drive signal applied to the voice coil feed terminal is the voice signal of the caller.

The receiving device having both the speaker and the vibration motor function according to the preferred embodiment of the present invention configured as described above is provided with the vibration motor in the groove which is not used in the external speaker having an outer diameter of 17 phi. Does not cause an increase.

Fig. 5 is a sectional view showing another embodiment of the receiving device for the electronic device with the separated yoke according to the present invention.

Referring to Figure 5, the receiving device of the electronic device according to the present invention is composed of a vibration motor coupled to a micro speaker (outside speaker). In particular, since the vibration motor is located inside the groove, which is an invalid space of the micro speaker, the vibration motor can provide a vibration function together with a normal speaker function without increasing the volume of the speaker, that is, the receiver.

First, the configuration of a micro speaker (an external speaker) occupying the upper part and the outer part in the overall configuration will be described. Hereinafter, the same reference numerals will be given to the same components as those of the embodiment of FIGS. Detailed description thereof will be omitted. The receiving device of the electronic device according to another embodiment of the present invention partitions the micro speaker and the coin-type vibration motor and has a yoke 25 that serves as a skeleton of the micro speaker and the coin-type vibration motor. It consists of a cap-shaped inner yoke 26 and a ring-shaped outer yoke 27.

In the yoke 25, a groove is formed in the bottom of the inner yoke 26 to insert the vibration motor 20 assembled into a single product, and the outer yoke 27 uses a bonding material. When attaching the lower plate 37 to the bottom of the outer yoke 27 or attaching the anisotropic magnet 4 for the speaker to the upper part of the outer yoke 27, a plurality of through-holes to increase the bonding force therebetween at a certain interval When the inner yoke 26 and the outer yoke 27 are integrally coupled to each other, the inner yoke 26 and the outer yoke 27 have a predetermined distance between the inner yoke 26 and the outer yoke 27.

A ring-shaped anisotropic magnet 4 for the speaker is mounted on the upper side of the outer yoke 27 of the yoke 25, and a ring-shaped plate 3 is installed on the inner side of the speaker anisotropic magnet 4. A magnetic gap is formed between the outer circumferential surface of the yoke 26, that is, between the bent portion and the plate 3.

Here, the anisotropic magnet 4 for the speaker 4 and the plate 3 can form a laminated structure of the outer yoke 27-anisotropic magnet 4 for the speaker plate 3 by diluting and bonding the bonding material of the release. have.

The height of the inner yoke 26 and the height of the plate 3 bonded on the anisotropic magnet 4 for the speaker may be the same to effectively form a magnetic gap, and the inner yoke 26 and the anisotropic magnet for the speaker ( 4) The voice coil 2 attached to the bottom surface of the diaphragm 1 whose outer peripheral surface is fixed to the upper part of the frame 15 in the magnetic gap formed between them is inserted by predetermined depth.

More specifically, the plate 3, the anisotropic magnet 4 for the speaker and the yoke 25, i.e., the inner yoke 26 and the outer yoke 27 form a magnetic circuit, and a magnetic gap formed in the magnetic circuit. The voice coil 2 is inserted into it.

In addition, although not shown in the drawings, the cover 3 is formed with a plurality of sound holes to protect the diaphragm 1 and to output the sound generated by the up and down vibration of the diaphragm 1 to the outside. It can be fixed to the outer peripheral surface of the).

The voice coil 2 supplied with the driving signal from an electronic device such as a conventional cellular phone or PDA forms an alternating rotating magnetic field. Therefore, a force acting up and down between the voice coil 2 and the magnetic circuit is generated, thereby causing the dome-shaped diaphragm 1 fixed on the upper portion of the voice coil 2 to vibrate up and down to generate a small wave. As a result, sound is produced.

Next, referring to the coin-type vibration motor 20 located inside the groove, located in the lower space of the inner yoke 26, preferably coin-type vibration motor 20 on the same axis as the center of the yoke 25 The center of is located. The rotor of the coin-type vibration motor 20 generates vibration when it rotates as an eccentric rotor having different masses from left and right with respect to the center. The eccentric rotor may be manufactured by asymmetrically placing a plurality of coil bundles on the upper side of the printed circuit board on which copper foils are formed on both sides.

Another embodiment according to the present invention shown in Figure 5 is unlike the vibration motor that is assembled integrally with the micro speaker in the form of the parts shown in Figures 3 and 4 because the coin-type vibration motor 20 itself is a finished product, It includes a separate upper case 33 and the lower case 34 surrounding the coin-type vibration motor 20. Accordingly, one side of the rotating shaft 30 is fixed to the fixing groove 29 of the upper case 33 of the vibration motor 20, and the fixing groove 38 of the printed circuit board mounted on the lower case 34 of the vibration motor 20. The other side of the rotating shaft 30 is fixed to the vibration motor 20, the lower case 34 is fixed by the lower plate 37. In addition, although not shown in the drawings, a separate through hole for exposing the feed terminal electrically connected to the brush of the coin-type vibration motor 20 to the outside may be formed in the lower plate 37.

However, the feed terminal of the coin-type vibration motor 20 may extend to the same side as the feed terminal of the voice coil 2 of the coupled micro speaker, thereby facilitating connection to an electronic device such as a mobile phone or a PDA.

Therefore, the feed terminal of the voice coil 2 and the feed terminal of the coin-type vibration motor 20 are both installed below the lower plate 37, or the feed terminal of the coin-type vibration motor 20 is formed outside. An extension member such as a printed circuit board or a conductive wire is disposed on the lower plate 37 to extend to the outer surface of the 15, or the feed terminal of the coin-type vibration motor 20 is sufficiently larger than the outer diameter of the outer yoke 27. Molding is long so that it can be exposed to the outside of the frame (15). In this specification, the case where the feed terminal of the coin-type vibration motor 20 is extended to the outside of the frame 15 of the various methods will be described.

The driving signal applied to the power supply terminal of the voice coil 2 is an acoustic signal such as a ring tone for notifying a user of a call, and the driving signal applied to the power supply terminal of the coin-type vibration motor 20 is a direct current for vibration generation. Current. On the other hand, in the case of a clamshell mobile telephone among various electronic devices, the receiver according to the present invention can be incorporated in a folder portion and used as a receiver. When the receiver is used as the receiver, the drive signal applied to the voice coil feed terminal is the voice signal of the caller.

The frame 15 is formed on the outer surface of the plate 3, the anisotropic magnet 4 for the speaker, the outer yoke 27 and the lower plate 37 by using an injection made of non-magnetic plastic resin. The frame 15 may be formed on the outer circumferential surface of the upper portion of the lower plate 37, but preferably, protrusions are formed vertically on the upper and lower portions of the frame 15 to lower the upper and lower plates 37 of the plate 3. Can support the lower part respectively. In addition, by forming a jaw lower than the outer circumferential surface on the upper inner circumferential surface of the frame 15, it is possible to fix the outer circumferential surface of the diaphragm 1 or the outer circumferential surface of the cover (not shown).

Here, the non-magnetic plastic resin is characterized by being injected at a pressure of 65 kg / ㎠ to 75 kg / ㎠ at a molding temperature of 220 ℃ to 240 ℃ to form a frame (15).

The receiving device of the electronic device according to another preferred embodiment of the present invention configured as described above is provided with a coin-type vibration motor inside the groove which is not used in the micro speaker (outside speaker) having an outer diameter of 17 phi or more. Does not cause an increase.

Although not shown in the drawings, the receiving device of the electronic device according to the present invention may be formed in an elliptic shape. Since the elliptical terminating device is easy to install in an electronic device such as a mobile phone or a PDA, it is currently widely used. When the receiving device of the electronic device is formed in an elliptical shape, it can be classified as follows. That is, both the inner and outer diameter portions of the yoke separated from each other may be formed in an oval shape, or the yokes themselves separated from each other may be formed in a circular shape and only a frame surrounding the outside may be formed in an oval shape. In the former case, anisotropic magnets, plates, diaphragms, voice coils, and a lower plate for the speaker, which are coupled to the yokes separated from each other, are all formed with corresponding ellipses. Therefore, in the present specification and claims, the ring shape may be interpreted as referring to both a circular ring and an elliptical ring. Also, the yoke separated from each other may be interpreted to refer to both a yoke having an elliptical shape and a yoke having a circular shape.

Therefore, according to the present invention, 1) by selectively configuring the micro-speaker and the vibration generation coin-type vibration motor for sound generation, information such as the incoming state of the electronic device such as a mobile phone or PDA selectively output to sound or vibration 2) Minimize the volume of the receiver device by integrating the coin-type vibration motor in the micro speaker as one unit to reduce the space occupied by the receiver device in the process of manufacturing electronic devices such as mobile phones and PDAs. 3) Unlike the conventional receiving device, it is possible to maintain the elastic force of the elastic member for vibration generation without providing a separate driving device to maintain the performance of the vibration motor for vibration generation over time. It has an effect.

Although the present invention has been described in detail only with respect to the specific embodiments described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the present invention, and such modifications and modifications belong to the appended claims. .

Claims (3)

In the reception device of the electronic device having a separate yoke for selectively driving the micro speaker for sound generation or the vibration motor for vibration generation to display the incoming state or various information of the electronic device, The micro speaker includes a cap-shaped inner yoke having a fixed groove formed in the center of the bottom surface and a ring-shaped outer yoke formed with a plurality of through holes at a predetermined interval, and the inner yoke and the outer yoke are integrally assembled with the inner yoke. A yoke configured such that the outer yoke maintains a predetermined distance, Anisotropic magnet for the speaker is located on the same axis as the center of the yoke, mounted on the upper outer portion of the outer yoke, A ring is positioned on the same axis as the center of the yoke, and is mounted on an upper portion of the anisotropic magnet for the speaker to form a magnetic circuit that generates magnetic flux by forming a magnetic gap between the bent portion of the inner yoke. With a plate of the shape, A double dome-shaped diaphragm having a center located on the same axis as the center of the yoke and having an outer circumferential surface fixed to an anisotropic magnet for the outer yoke and a speaker and a frame surrounding the plate; A voice coil coupled to a bottom surface of the diaphragm and wound in a cylindrical shape inserted into the magnetic gap; The coin-type vibration motor, and the lower plate for supporting the frame and yoke, the magnet for the vibration motor and the rotating shaft, A flexible printed circuit board positioned on an upper portion of the lower plate and having a fixed groove formed in a center thereof, and having a brush for transmitting a driving signal to the rotor at a predetermined angle; A magnet having a ring-shaped vibration motor mounted on an upper portion of the lower plate, the center being positioned on the same axis as the center of the yoke; A rotating shaft having both ends rotatably coupled to the fixing groove of the bottom surface of the yoke and the fixing groove of the printed circuit board; And an eccentric rotor mounted on the rotating shaft to be rotatable by a drive signal transmitted through the brush. The method of claim 1, One side of the frame is electrically connected to the voice coil and the brush connected to the rotor, respectively, the voice coil drive signal for sound generation and the brush drive for vibration generation due to rotation of the eccentric rotor And a printed circuit board having a plurality of feed terminals for selectively supplying a signal. The method of claim 1, The coin-type vibration motor has a fixing groove formed at the center of the bottom surface, the upper case accommodating the rotating shaft, the rotor and the magnet for the vibration motor, and a magnet for the vibration motor coupled to the bottom surface of the upper case. It is further provided with a lower case, wherein the rotary shaft is provided with the separated yoke, characterized in that both ends are coupled to the fixing groove of the upper case and the fixing groove of the printed circuit board seated on the lower case, respectively. Receiver of an electronic device.