TW200531568A - Speaker and module using the same, and electronic device and apparatus - Google Patents

Abstract

A net (30) constructed from a material including at least metal is joined to a protector (29) of a speaker to shield an electromagnetic wave. The structure can eliminate electromagnetic wave interference to electronic apparatuses such as mobile telephones using the speaker.

Description

200531568 IX. Description of the invention: Technical field of the invention of the householder 3 Technical field The present invention relates to electronic devices and equipment such as speakers or modules used in various audio equipment or information communication equipment 5 and mobile phones or game equipment. Background Art The prior art will be described below with reference to Fig. 12. FIG. 12 is a cross-sectional view of a conventional speaker 10, as shown in FIG. 12, by holding the upper plate 2 and the magnetic vehicle 3: a magnet 1 is magnetized to form an internal magnetic type magnetic circuit 4, and a frame 6 is connected to the magnetic car 3 of the magnetic circuit 4. The vibrating plate 7 is coupled to the edge portion of the aforementioned 彳 16 and the voice coil 8 is coupled to the vibrating plate 7. At the same time, the voice coil 8 is fitted into the magnetic gap 15 5 of the magnetic circuit 4. Then, the protector 9 is coupled to the frame 6 so as to cover the aforementioned vibration plate 7. In addition, prior art literature information related to the invention of the application is disclosed in, for example, Japanese Patent Laid-Open Publication No. 61_258660. These speakers are mostly used in electronic devices such as mobile phones as a kit. On this day, when the speaker is affected by the interference wave, the electromagnetic wave 20 enters from the voice coil 8 of the speaker, and the amplifier of electronic equipment such as a telephone is amplified by 4 ports, and noise components are generated, and electromagnetic wave obstruction occurs. . This phenomenon is particularly likely to occur on GSM mobile phones. I: Summary of the Invention 3 Disclosure of the Invention 5 200531568

In order to achieve the above-mentioned object, the flavor is excellent and the speaker is not easily obstructed by magnetic waves. The object of the present invention is as follows. The speaker of the present invention includes a frame combined with a magnetic circuit

Contains less metal, Lai Hong _ combination.该 With this structure, 敝 electromagnetic waves can be screened by a mesh made of a metal-containing material, and electromagnetic wave obstruction can be avoided. Also, the speaker of the present invention includes a vibration plate combined with the outer periphery of the magnetic circuit including the main magnet, and a phase of the vibration plate, and at the same time, its _ part is arranged in the magnetic gap of the magnetic circuit. The voice coil ^ is combined with the front «Marina to cover the protector of the aforementioned vibration plate, and Yu Shubaoxin is separated from the upper plate constituting the magnetic circuit above by a" quotation of Haihe 4 ". By using the effect of the reverberant magnet, the leakage beam generated in the & plane direction of the magnetic circuit constituted by the main magnet can be reduced. Furthermore, the speaker is not easily affected by external electromagnetic waves, and the use of the speaker can be avoided. A loudspeaker is an electronic device such as a mobile phone || The electromagnetic wave is blocked. The diagram is briefly explained. Figure 1 is a cross-sectional view of a loudspeaker according to the first embodiment of the present invention. Fig. 3 is a sectional view of a loudspeaker according to a third embodiment of the present invention. Fig. 4 is a sectional view of another loudspeaker according to the third embodiment of the present invention. Fig. 5 is a sectional view of another loudspeaker according to the third embodiment of the present invention. Department Sectional view of other speakers in Embodiment 3. 5 FIG. 7 is a sectional view of speakers in Embodiment 4 of the present invention. FIG. 8 is a sectional view of other speakers in Embodiment 4 of the present invention. FIG. 9A is an embodiment of the present invention. Sectional view of a speaker module in form 5. FIG. 9B is a cross-sectional view of another speaker module in Embodiment 5 of the present invention. 10 FIG. 10A is a cross-sectional view of a main part of an electronic device in Embodiment 6 of the present invention. The figure is a cross-sectional view of a main part of another electronic device according to Embodiment 6 of the present invention. Fig. 11A is a cross-sectional view of a device according to Embodiment 7 of the present invention. 15 Fig. 11B is a cross-sectional view of another device according to Embodiment 7 of the present invention. Fig. 12 is a cross-sectional view of a conventional speaker. L Embodiment 3 Best Mode for Implementing the Invention The following describes the embodiment of the present invention by using drawings. 20 (Embodiment 1) Fig. 1 is a speaker according to Embodiment 1 of the present invention. A cross-sectional view. As shown in FIG. 1, an upper magnetic plate 21 and a yoke 23 are used to sandwich a magnetic main magnet 21 to form an internal magnetic type magnetic circuit 24. A resin frame 26 is coupled to the internal magnetic type magnetic circuit 24. Magnet of Road 24 Vehicle 23. The vibration 7 200531568 is next to the edge of the resin frame 26, and one end of the voice coil 28 is combined with the vibration plate 27, and the other end of the voice coil 28 is reversely combined with the internal magnet. The magnetic gap 25 of the type magnetic circuit 24. 'The Bao 29 is combined with the purchase purpose frame 26 so as to cover the aforementioned vibration Cui and the net 30 composed of a material containing at least metal is combined with the Bao 29 here, § 保护 protector 29 It is made of resin material. Therefore, the productivity can be improved, and the productivity of the speaker is further improved. Φ The structure of the sodium mesh 30 is made by weaving a foil made of nickel, copper, or both, and winding it with a resin material. It is composed of a line on the center line of the heart. Right, '罔 30's center line contains a resin material, which can improve the stretchability of the net and can be combined with the protector 29 without a gap. Moreover, if copper or nickel is used for the box material of the net 30, the net 30 can be made more flexible, and at the same time, the shielding effect of electromagnetic waves can be enhanced. In addition, if a metal coating is added to the surface of the protective plutonium, the shielding effect of electromagnetic waves can be further enhanced. 15 The composition ratio of the resin material and the metal material constituting the net 30 should be effective • It should be constructed at the required ratio based on the characteristics of each material. For example, when the electromagnetic wave shielding effect is desired, the texture ratio of the metal material is increased, and when the elastic net is desired, the composition ratio of the resin material is increased, that is, it can be adjusted according to its use. In particular, when it is intended to be a more flexible 20 mesh, it is effective to use a plurality of fine wires made of a resin material as twisted wires. In addition to the aforementioned method, there is also a method in which powder of a metal material is mixed into a resin material. "With this structure, electromagnetic waves can be shielded by a mesh made of a material containing metal, and electromagnetic wave obstruction can be avoided. Since the speaker becomes a structure that is susceptible to electromagnetic waves without electromagnetic wave obstruction, it can Avoidance of electromagnetic wave obstruction by electronic devices such as mobile phones using this speaker 0 (Embodiment 2) 5 Figure 2 is a cross-sectional view of a speaker according to Embodiment 2 of the present invention. If only points different from Embodiment 1 are described, it is The point where the net 30 is coupled to the inner magnetic type magnetic circuit 24. This embodiment is to increase a portion of the outer periphery of the net 30 (hereinafter referred to as the "net outer peripheral portion") 30A and to combine the magnetic outline of the inner magnetic type magnetic circuit 24 twenty three. With this structure, since the net 30 is grounded by the internal magnetic type magnetic circuit 24, the shielding effect of electromagnetic waves can be improved by 10%. Moreover, if a metal coating is applied to the surface of the protector 29 combined with the net 30, the shielding effect of electromagnetic waves can be further improved. In addition, even if the net outer peripheral portion 30A is further enlarged and combined to form the inner magnetic type magnetic circuit 24, the shielding effect of electromagnetic waves can be improved. (Embodiment 3) 15 FIGS. 3 to 6 are sectional views showing a speaker according to Embodiment 3 of the present invention. As shown in Fig. 3, the upper plate 22 and the magnetic Xinger 23 hold the magnetic main magnet 2: 1 to hold the magnetic field to form an internal magnetic type magnetic circuit 24. The resin frame is bonded to the magnetic vehicle 23 of the inner magnetic type magnetic circuit 24. The outer periphery of the vibration plate 27 is adhered to the edge portion of the resin frame 2026, and one of the ends of the voice coil 28 is bonded to the vibration plate η.磁路 ^ 的 磁 clearance 25. However, the protector 29 is coupled to the resin frame% so as to cover the aforementioned vibration plate 27, and the magnet 39 is coupled to the protector 29 at a position where the protector 29 and the upper plate of the internal magnetic type magnetic circuit are aimed. 9 200531568 With this structure, it is possible to reduce the leakage magnetic flux generated in the front direction of the inner magnetic type magnetic circuit 24 constituted by the main magnet 21 by the effect of the reaction magnet 39. Furthermore,% Sound is less susceptible to electromagnetic waves from the outside, and it is possible to avoid electromagnetic wave obstruction by using electronic devices such as mobile phones. 5 In addition, by the reciprocating magnetic force of the main magnet 21 and the reverberating magnet 39, the magnetic flux density in the magnetic gap 25 of the inner magnetic type magnetic circuit 24 can be increased, and the sound pressure level of the speaker can be improved. Next, as shown in FIG. 4, an example in which the top plate 38 is coupled to the side of the reaction magnet 39 opposite to the vibration plate 27 will be described. In this example, the top plate 38 is coupled to the opposite side of the reaction magnet 39 and the vibration plate 27, so the effect of the top plate 38 can be greatly reduced from the reaction magnet 39 itself to the outside, that is, the front direction. Leaking magnetic beam. Furthermore, by disposing the top plate 38 of the magnetic material in front of the speaker, it is possible to shield the electromagnetic waves from the outside without being easily affected, and to reduce the electromagnetic wave resistance. In addition, compared with the case where the reaction magnet 39 is used alone, it can be used in a state where the operating point of the reaction magnet 39 has been stabilized, and can prevent the demagnetization caused by temperature changes or elapsed time. . > Next, as shown in Fig. 5, an example in which the reaction magnet 39 constitutes a magnetic circuit and is combined with the holding state 29 will be described. In the case of this example, a magnetic circuit including the reaction magnet 39 is formed by sandwiching the reaction magnet 39 between the top plate 38 and Shitzinger 32, and the top plate 38 is disposed opposite to the magnetic type magnetic circuit 24 including the main magnet 21.上 板 22。 Upper plate 22. With this structure, it is possible to further achieve the effect of preventing demagnetization caused by the reduction of the chirped magnetic flux, the reduction of the electromagnetic wave obstruction, and the stabilization of the operating point compared to the example shown in FIG. In this embodiment, when the protector 29 is formed of a resin material, a resin material can be formed by a single shot injection molding method to improve the productivity of the protector 29, thereby improving the productivity of the speaker. Also, when it is made of a non-magnetic material such as a resin material, the magnetic flux generated by the reaction magnet 39 and the main magnet 21 is not absorbed. Therefore, the magnetic flux of the reaction magnet 39 and the main magnet 21 can be effectively used. In addition to resin materials, these materials are often used in metal materials, or non-ferrous steel-based materials. 10. On the other hand, when the material of the protector 29 is made of a magnetic material, since the protector 29 itself has a function of absorbing magnetic flux, it is possible to prevent a leaky beam from being emitted from the front. In addition, the magnetic material also has an effect of shielding electromagnetic waves, and can reduce electromagnetic wave obstruction. Further, in Fig. 6, a part of the protector 29 is extended, and the protector extension 29A is brought into contact with the magnetic type magnetic circuit% including the main magnet 21. On this day ^ ', because the protection H29 is grounded through the internal magnetic type magnetic circuit 24, it can form a closed circuit made of magnetic material including the front of the speaker, and can further reduce the leakage magnetic beam and the electromagnetic wave obstruction. (Embodiment 4) Figures 20 through 7 are cross-sectional views of a speaker according to Embodiment 4 of the present invention. If only the points different from the embodiment 3 are described, the points are constituted by the magnetic circuit 24A of the external magnetic type. In this example, the upper plate 22A and the lower plate 23A sandwich the magnet 21A to constitute an external magnetic type magnetic circuit 24A. Then, the reaction magnet 39A is combined with the protector 2 9 B through a gap at a position facing the pole piece of the lower plate 23 8 11 200531568. Except for the structure of the external-magnetic-type magnetic circuit 24A, it is the same as that of the embodiment j, and a description thereof is omitted.

In addition, the structure of the "Hypermagnetic Field Magnetic Circuit" can also be applied to the structure of the antimagnetic type magnetic circuit for removing the magnet 33 and the shield cover 34 shown in Fig. 8 to reduce the external magnetic type magnetic circuit. The structure of the leaky ferromagnetic beam. At this time, even with the structure of the external magnetic type magnetic circuit, the leakage magnetic flux on the back side of the magnetic circuit can still be formed by the structure of the antimagnetic type magnetic circuit provided by the magnet 33 and the shield 33 μ. Reduce the leakage flux from the face of the speaker to the face of the speaker I.

IU 15 20 The same is true for other faces in Yangtze, and by the gap through the gap will be combined with the Bao. 29B reverberation magnet% a set on the opposite side of the lower plate 2 poles can reduce the orientation The front part of the speaker is the magnetic flux. Therefore, the countermeasure against the leakage of the magnetic field is effective in both directions of the front part of the speaker and the back part of the speaker, and a good anti-magnetic speaker can be realized. It can also increase the sound pressure level of the speakers. Also, although the aforementioned speaker shape is generally described as a circular speaker using a frequency, the present invention is not limited to this shape, and the frame shape: the shape of a bubbly shape or the shape of a magnetic circuit can also be applied to a shape other than a circle. . The shapes that are round and frequently used include squares, rectangles, ellipses, oblongs, and other shapes. These slender shapes have recently received particular attention because of their miniaturization and cleanliness requirements. (Embodiment 5) FIG. 9A is a cross-sectional view of a speaker module according to Embodiment 5 of the present invention, as shown in FIG. 9A, and the speaker described in Embodiment 2 is integrated with the electric signal ^ 12 200531568 Road 4〇 Into a speaker module 50. Herein, the structure of the speaker module 50 is to fix the electronic parts 42 and the circuit board 41 to form an electronic circuit. Then, the electronic circuit 40 is integrated with the speaker 31 described in the first or second embodiment, and a speaker module 50 is constituted by 5. The electronic circuit 40 includes at least an amplifier circuit for an audio signal supplied to the speaker 31. That is, in the state of being integrated with the speaker 31 and having completed the internal wiring, there is a circuit that amplifies to the level required for outputting the signal-processed sound signal from the speaker 31, so only the speaker module 10 is combined 50, you can easily get audio output. Moreover, in addition to the amplifier circuit, as long as the electronic circuit 40 is a communication device H such as a mobile phone, it may also include electricity required for communication such as a detection circuit, a transposition circuit, and a multi-modulation circuit, or a driver for a display device such as a liquid crystal. Circuits, and various circuits such as power circuits or charging circuits. 15 With this structure, the speaker that has been produced separately in the past and supplied to the production base of electronic equipment such as mobile phones through separate inspection steps or logistics steps | §31 Integrated with electronic circuits 40 and implemented modules In this way, production steps, inspection steps and logistics steps can be integrated, and many costs can be reduced. Therefore, the speaker module 50 combining the speaker 31 and the electronic circuit 40 can be provided inexpensively. Similarly, Fig. 9B is a sectional view of another speaker module according to the fifth embodiment of the present invention. As shown in Fig. 9B, the speaker 35 described in Embodiment 3 or 4 is integrated with the electronic device 40 to constitute a speaker module. This structure produces the same effect as in the case of FIG. 9A. 13 200531568 FIG. 10A is a face view showing the main part of the electronic telephone according to the sixth embodiment of the present invention. As shown in the figure, a speaker 31 described in Embodiment Mode is mounted to form a mobile phone 80. Here, the structure of the mobile phone 80 is such that the speaker 31, the electronic circuit 540, the liquid crystal display module 60, and other components or modules are mounted inside the exterior case 70 to constitute the main part of the mobile phone 80 . With this structure, the speaker 31 has a structure that is not easily affected by electromagnetic waves and is not obstructed by magnetic waves, thereby preventing electromagnetic waves from being obstructed by electronic equipment such as a mobile phone 80 using the speaker 31. 10. The first embodiment is a cross-sectional view of a main part of another mobile phone of an electronic device according to a sixth embodiment of the present invention. As shown in the figure, the mobile phone 80 is equipped with the% Sound 35 which is already included in the embodiment. Here, the structure of the mobile phone 80 is such that the speaker 35, the electronic circuit 40, the liquid crystal display module 60, and other components or modules are mounted inside the exterior case 1570 to constitute the main part of the mobile phone 80. With this structure, it is possible to reduce the leakage magnetic flux of electronic equipment such as a mobile phone 80, and to make it less susceptible to electromagnetic waves from outside the electronic equipment such as a mobile phone 80, and to prevent the electromagnetic wave from being blocked. In addition, the sound pressure level of the speaker 35 can be raised, whereby the sound pressure level of the electronic device 20 such as the mobile phone 80 can be increased. Therefore, it is possible to save energy of an electronic device such as a mobile phone 80. (Embodiment 7) Fig. 11A is a cross-sectional view showing an automobile of a device according to Embodiment 7 of the present invention. As shown in FIG. 11A, the speaker ^ described in Embodiment 1 or 2 is mounted on a rear seat rack or a front panel, and is used as a part of a car navigation or car audio 14 200531568 to constitute the car 90. With this structure, the speaker 31 has a structure that is less susceptible to the history of interference waves and does not cause electromagnetic wave obstruction, thereby preventing electromagnetic wave obstruction by devices such as the automobile 90 using the speaker 31. Fig. 11B is a sectional view of another automobile of the device according to the seventh embodiment of the present invention. As shown in FIG. 11B, the Yang Shuang Cry 3 described in Embodiment 3 or 4 is mounted on a rear seat frame or a front panel, and is used as a part of a car navigation or a car stand to constitute the car 90. By adopting this structure, it is possible to reduce the leakage magnetic flux from the car 9 and other wearables 10 15 20 i 罝 < the horn 35, and it is difficult to receive external electromagnetic waves from devices such as the car 9 And prevent electromagnetic wave obstruction. X ,; ancient :: sound pressure level of the device 35, which can improve the sound pressure of devices such as steam: accurate capture and thus contribute to saving fuel for vehicles such as 90, or contribute to the protection of the global environment . Industrial Applicability Speakers, speakerphones, Wengheer units, electronic devices and devices related to the present invention ^ Used for video and audio machines, information devices, and game machines that require electromagnetic interference Such as electronic equipment and automobiles. , ° [Schematic explanation] Figure 1 is a cross-sectional view of a speaker according to Embodiment 1 of the present invention. Figure 2 is a cross-sectional view of a speaker according to a second embodiment of the present invention. ^ The figure is a cross-sectional view of a speaker according to a third embodiment of the present invention. FIG. 5 is another cross section Ξ of another speaker in Embodiment 3 of the present invention. 15 200531568 FIG. 6 is a sectional view of another speaker according to the third embodiment of the present invention. Fig. 7 is a sectional view of a speaker according to a fourth embodiment of the present invention. Fig. 8 is a sectional view of another speaker according to the fourth embodiment of the present invention. Fig. 9A is a sectional view of a speaker module according to a fifth embodiment of the present invention. 5 FIG. 9B is a sectional view of another speaker module according to Embodiment 5 of the present invention. Fig. 10A is a sectional view of a main part of an electronic device according to a sixth embodiment of the present invention. Fig. 10B is a cross-sectional view of a main part of another electronic device according to the sixth embodiment of the present invention. Fig. 11A is a sectional view of a device according to a seventh embodiment of the present invention. Fig. 11B is a sectional view of another device according to the seventh embodiment of the present invention. Fig. 12 is a sectional view of a conventional speaker. [Representative symbols for main components of the drawing] 1 ... Magnet 21A ... Magnet 2 ... Upper plate 22, 22A ... Upper plate 3 ... Magnet 23, 23A ... Lower plate 4. .. Inner magnetic type magnetic circuit 23 .... Magnetic car 5 ... Magnetic gap 24 ... Inner magnetic type magnetic circuit 6 ... Frame 24A ... Outer magnetic type magnetic circuit 7 ... Vibrating plate 24B. ..Antimagnetic type magnetic circuit 8 ... voice coil 25 ... magnetic gap 9 ... protector 26 ... resin frame 21 ... main magnet 27 ... vibration plate 16 200531568 28 ... voice coil 39 ... Reacting magnet 29 ... Protector 39A ... Reactive magnet 29A ... Protector extension 40 ... Electronic circuit 29B ... Protector 41 ... Circuit substrate 30 ... Net 42 ... Electronics Parts 31 ... Speaker 50 ... Speaker module 32 ... Magnetic 60 ... Display module 33 ... Remove magnet 70 ... Outer box 34 ... Shield 80 ... Mobile phone 35 ... speaker 38 ... top 90 ... car 17

Claims (1)

200531568 10. Scope of patent application: 1. A loudspeaker comprising: a frame combined with a magnetic circuit; a vibration plate coupled with the outer periphery of the aforementioned frame; 5 a voice coil combined with the aforementioned vibration plate, and A part of it is arranged in the magnetic gap of the magnetic circuit; and a protector is combined with the frame to cover the vibration plate, and the protector is combined with a net made of a material containing at least metal. 10 2. The loudspeaker according to item 1 of the patent application range, wherein the protector is made of resin material. 3. As for the loudspeaker in the scope of patent application No. 1 or 2, the aforementioned network is made of resin material. 4. For the loudspeaker in the scope of patent application No. 1 or 2, the aforementioned net system package 15 is made of copper-based materials. 5. As for the loudspeaker in the scope of patent application No. 1 or 2, wherein the aforementioned net system is composed of nickel-based materials. 6. As for the loudspeaker in the scope of patent application No. 1 or 2, the aforementioned network system is composed of copper-based and nickel-based materials. 20 7. The speaker according to item 1 or 2 of the scope of patent application, wherein the aforementioned network system is combined with the aforementioned magnetic circuit to form a speaker. 8. —A kind of module, which combines the speaker and electronic circuit of the first or second patent application. 9. An electronic device equipped with a loudspeaker for which the scope of patent application is 1 or 2 18 200531568. 10 types of devices are those equipped with loudspeakers in scope i or 2 of the scope of patent application. 11. A loudspeaker, comprising: a 杧 system combined with an inner magnetic type magnetic circuit including a main magnet; a vibration plate coupled with the outer periphery of the aforementioned frame; a ring coupled with a Lishu vibration plate, and A part is arranged in the magnetic gap of the internal magnetic type magnetic circuit; and 10 15 20 protection 2 is combined with the aforementioned frame to cover the vibration plate, and the protector is on the upper plate which constitutes the internal magnetic type magnetic circuit. Opposite positions are combined with a reverberation magnet through a gap. 12. A loudspeaker comprising: a frame 'combined with a magnetic circuit other than the main magnet; a vibration plate coupled with the outer periphery of the frame; 2 turns, combined with the vibration plate, and #A part is arranged in the magnetic gap of the external magnetic type magnetic circuit; and the protection 1 is combined with the aforementioned frame to cover the aforementioned vibration plate, and then the Bao 5 Manyi is formed with the lower plate constituting the external magnetic type magnetic circuit The pole pieces are opposed to each other with a reciprocating magnet through a gap. 13. For example, in the scope of application for the patent, item u, 铴 ear 1 ^, in which the above-mentioned echo magnet is combined with the top plate on the side opposite to the rain vibration plate. 14. The buckle of item No. y or X in the patent scope, wherein the aforementioned reaction magnets constitute the aforementioned magnetic circuit and are combined with the aforementioned protector. 15. If the scope of application for the patent is u or 耷, the aforementioned protection 19 200531568 is made of resin material. 16. The speaker of claim 11 or 12, wherein the aforementioned protector is made of a magnetic material. 17. The loudspeaker according to item 11 or 12 of the patent application, wherein the aforementioned protector is made of non-magnetic material. 18. The loudspeaker according to item 16 of the patent application, wherein the aforementioned protector is formed by contacting the aforementioned magnetic circuit including the aforementioned main magnet. 19. A module is a combination of a speaker and an electronic circuit in the 11th or 12th of the scope of patent application. 10 20. — An electronic device equipped with a loudspeaker with the scope of patent application No. 11 or No. 12. 21. A device that is equipped with a loudspeaker in the 11th or 12th of the scope of patent application. 20