WO2011132870A2 - 스피커 - Google Patents
스피커 Download PDFInfo
- Publication number
- WO2011132870A2 WO2011132870A2 PCT/KR2011/002428 KR2011002428W WO2011132870A2 WO 2011132870 A2 WO2011132870 A2 WO 2011132870A2 KR 2011002428 W KR2011002428 W KR 2011002428W WO 2011132870 A2 WO2011132870 A2 WO 2011132870A2
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- WO
- WIPO (PCT)
- Prior art keywords
- speaker
- magnetic
- plate
- magnetic gap
- diaphragm
- Prior art date
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/025—Magnetic circuit
Definitions
- the present invention relates to a speaker, and more particularly, to a speaker having excellent performance while having a significantly low height.
- speakers are devices that convert electrical signals into sounds that we can hear. Speakers can be used alone, or as a component of an electronic device. In recent years, electronic devices have become smaller and lighter. Therefore, the speakers applied to electronic devices also need to be smaller, lighter and better performance.
- 1 and 2 are cross-sectional views showing magnetic shield magnets (magnet) speaker according to the prior art. 1 and 2 are mainly used as speakers for PCs and full-range speakers for TVs.
- the cone-shaped frame 17 and the magnetic shield cap 16 form an outer shape of the speaker.
- a main magnet 1 serving as a source of magnetic flux and a yoke 5 providing a passage path for the magnetic flux generated from the main magnet 1 are provided inside the magnetic cap 16.
- the yoke 5 consists of a top plate 3 and a bottom plate 2.
- the top plate 3 has a ring shape in which the center portion is removed from the disc
- the bottom plate 2 has a disc shape
- the bottom plate has a pawl 4 that rises in a cylindrical shape from the bottom plate 2.
- the magnetic flux generated by the main magnet 1 is induced by the yoke 5 and meets the discontinuity of the yoke 5, which is called a magnetic gap.
- the gap between the pole 4 and the top plate 3 corresponds to a magnetic gap.
- a ring-shaped magnetic shield magnet 15 is located at the bottom of the bottom plate 2.
- the magnetic shield 15 is for preventing the magnetic field generated from the main magnet 1 from affecting the electronic components outside the speaker.
- the magnetic shield cap 16 surrounds the outside of the main magnet 1 and the magnetic shield magnet 15 to effectively block the magnetic field generated from the main magnet 1 and the magnetic shield magnet 15.
- the main magnet 1, the yoke 5, the magnetic shield magnet 15, the magnetic shield cap 16, and the magnetic gap constitute a magnetic circuit.
- Magnetic circuits are devices that provide the magnetic flux necessary for speakers to convert electrical signals into sound.
- a voice coil 7 is located in the magnetic gap.
- the voice coil 7 is wound around a cylindrical bobbin 6, which is connected to a diaphragm 8 having a substantially cone shape. Therefore, when an electrical signal is applied to the voice coil 7, the voice coil 7 moves up and down by the law of Fleming, and this up and down movement is transmitted to the diaphragm 8 along the bobbin.
- the diaphragm 8 performs the function of converting this movement into sound.
- a damper 10 is provided to support the bobbin 6 and to control the vibration range of the diaphragm 8.
- a lead wire 12 is connected to the voice coil 7 to apply an electrical signal.
- the leadwire 12 is generally bonded along the surface of the diaphragm 8 and is connected to the terminal terminal 13 through a hole formed in the frame 17.
- the edge portion 9 connects the outer edge of the diaphragm 8 with the frame 17 and performs a function of controlling the vibration range of the diaphragm 8.
- a vibrometer refers to a device that converts an electrical signal into sound by moving in a magnetic field according to an input electrical signal.
- the dust cap 11 is provided at the center of the diaphragm 8, which is to prevent foreign matter from entering the magnetic gap.
- the speaker according to the prior art operates as follows.
- an electrical signal is applied to the voice coil 7 via the terminal terminal 13 and the lead wire 12
- the voice coil 7 located in the magnetic gap moves in a direction perpendicular to the magnetic field by the Fleming law.
- This movement is transmitted to the diaphragm 8.
- the motion transmitted to the diaphragm 8 vibrates the diaphragm 8, whereby the electrical signal is converted into sound.
- the speaker of the prior art according to FIGS. 1 and 2 has the following problems.
- the size of the main magnet constituting the magnetic circuit part was inevitably reduced.
- the thickness of the magnet is reduced, the magnetic flux density of the magnetic gap is reduced, resulting in a problem that the sound pressure of the speaker is lowered.
- 3 is a cross-sectional view showing a mid- and low-range speaker according to the prior art.
- 3 is a speaker used for 60 Hz to 3 KHz of the audible frequency band.
- the configuration of the speaker is similar to that of the speaker shown in Figs. 1 and 2 as a whole, but it is characterized in that it does not include a device for radioactive treatment.
- the speaker illustrated in FIG. 3 is mainly used for a vehicle or a home, but has the following problems.
- the speaker illustrated in FIG. 3 when the speaker illustrated in FIG. 3 is mounted in a vehicle, it is difficult to increase the volume of the magnet 31 due to the height of the speaker itself, and thus, the sound pressure is very low. That is, the speaker should be mounted in a limited space of the door trim of the vehicle.
- the height of the speaker according to the prior art is determined to be the sum of the thicknesses of the magnetic circuit and the vibrometer. Therefore, in the speaker mounted on the vehicle, the size of the magnet in the magnetic circuit is inevitably reduced.
- the weight of the voice coil will make it impossible to use a large voice coil. Therefore, not only it is difficult to produce a high output, but also the durability degradation by the voice coil with a small wire diameter arises.
- the diameter of the bobbin is small, it is necessary to wind more voice coils, which increases the width of the voice coils to be wound. Therefore, a problem occurs that the voice coil contacts the bottom plate 36 during the vertical movement. Therefore, the height of the pole 37 connected to the bottom plate 36 is increased, and eventually there is a problem that the height of the entire speaker is increased.
- 4 is a cross-sectional view showing a first embodiment of a treble speaker according to the prior art. 4 is a speaker used for 2 KHz to 20 KHz in the audio frequency band. The speaker illustrated in FIG. 4 is mainly used for a vehicle, a home, or the like.
- the frame 62 forms the appearance of the loudspeaker.
- a yoke 55 is provided which provides a passage path for the magnetic flux generated by the magnet 51.
- the yoke 55 includes a disc shaped top plate 54 and a bottom plate 52 having a cylindrical shape and having a bottom portion, and having a center of the bottom portion opened.
- a ring-shaped magnet 51 is placed between the bottom plate 52 and the top plate 54.
- a magnetic gap is formed between the bottom plate 52 and the top plate 54.
- the magnet 51, the yoke 55 and the magnetic gap form a magnetic circuit.
- a voice coil 56 is located in the magnetic gap.
- the voice coil 56 is connected to a diaphragm 57.
- this movement is transmitted to the diaphragm 57, and the diaphragm 57 vibrates, thereby converting the electrical signal into sound.
- a lead wire 60 is connected to the voice coil 56 to apply an electrical signal.
- the lead wire 60 is connected to the terminal terminal 61 to receive an electrical signal from the outside.
- the high acoustic speaker illustrated in FIG. 4 is provided with a first sound absorbing agent 58 and a second sound absorbing material 59. Accordingly, high quality sound is provided by minimizing the diffraction of the back vibration sound of the diaphragm 57 and reflection wave and standing wave.
- FIG. 5 is a cross-sectional view showing a second embodiment of a treble speaker according to the prior art.
- the frame 72 forms the outer shape of the speaker.
- a yoke 83 is provided which provides a passage path for the magnetic flux generated by the magnet 71.
- the yoke 83 is composed of a disk-shaped top plate 81 and a bottom plate 82 having a cylindrical shape in which a bottom surface is blocked.
- a disk-shaped magnet 81 is placed between the bottom plate 82 and the top plate 81.
- a magnetic gap is formed between the bottom plate 82 and the top plate 81.
- the magnet 71, the yoke 83 and the magnetic gap form a magnetic circuit.
- a voice coil 84 is located in the magnetic gap.
- the voice coil 84 is wound around the bobbin 85, and the bobbin 85 is connected to a diaphragm 76 to transmit the up and down motion of the voice coil 84 to the diaphragm 76.
- a first cover 77 having an injection plastic material, and serves as an equalizer for improving the characteristics of the audible frequency band.
- a second cover 78 of a mesh material on the upper portion of the first cover 77, which serves to protect the internal elements such as the diaphragm 76.
- the terminal terminal 79 is for supplying an electrical signal to the voice coil 84, and the terminal terminal 79 is supported by the fixing base 74.
- the bottom plate 82 is fastened to the frame 72 by the magnetic circuit support 73.
- the high-pitched loudspeaker shown in FIG. 5 is also difficult to be mounted on a vehicle due to its high height, and at the time of high power, the lower end of the diaphragm 76 is blocked, so that diffraction of the bottom vibrating sound of the diaphragm and reflected and standing wave problems occur. Therefore, it does not provide high sound quality, there is a problem that not only the production process is complicated due to many components, but also the production cost increases. On the other hand, as the heat generated from the voice coil 84 is not released, there is a problem that the speaker frequently causes a failure.
- the present invention is to solve the problems of the prior art as described above, it is an object of the present invention to provide a speaker with an improved acoustic characteristics while reducing the size of the speaker.
- the vibrometer in forming a magnetic circuit, can be formed inside the magnetic circuit by forming the polarity of the magnet in the vertical direction and modifying the shape of the yoke that provides a passage path for the magnetic flux.
- the speaker according to the present invention has the following effects.
- the diameter of the bobbin is large, it is possible to wind the voice coil having a larger wire diameter, thereby increasing the input and output of the speaker.
- the number of speaker parts can be reduced to simplify the assembly of the speaker, and the production cost can be reduced by automating the production.
- FIG 1 and 2 are cross-sectional views showing magnetic shield magnets (magnet) speaker according to the prior art.
- FIG. 3 is a cross-sectional view showing a mid- and low-range speaker according to the prior art.
- FIG. 4 is a cross-sectional view showing a first embodiment of a treble speaker according to the prior art.
- FIG. 5 is a cross-sectional view showing a second embodiment of a treble speaker according to the prior art.
- FIG. 6 is a cross-sectional view of an embodiment of a magnetic circuit according to the present invention.
- FIG. 7 is a sectional view showing a first embodiment of a speaker according to the present invention.
- FIG. 8 is a sectional view showing a second embodiment of a speaker according to the present invention.
- FIG. 9 is a sectional view showing a third embodiment of a speaker according to the present invention.
- FIG. 10 is a sectional view showing a fourth embodiment of a speaker according to the present invention.
- FIG. 11 is a graph showing sound pressure and frequency characteristics of the speaker according to FIG. 1 and the speaker according to the first embodiment of the present invention.
- FIG. 12 is a graph illustrating sound pressure and frequency characteristics of a 4 inch speaker according to the related art and a speaker according to a third embodiment of the present invention.
- the speaker according to the present invention for achieving the above object comprises a magnetic circuit and a vibrometer, wherein the magnetic circuit has a ring shape, the lower surface portion of the ring has a first polarity, the upper surface portion and the first polarity A magnet having an opposite second polarity, a first plate coupled to a lower surface of the ring-shaped magnet, extending in a center direction of the ring, connected to the first plate, and protruding upward from the first plate A second magnetic gap providing portion and a second plate which is attached to an upper surface portion of the ring-shaped magnet and is connected to the second plate and the second plate extending in the center direction of the ring and protrudes downward from the second plate; It comprises a magnetic gap providing portion.
- a magnetic circuit according to the present invention includes a magnet 101, a first plate 102, a second plate 104, a first magnetic gap providing unit 103, and a second magnetic gap providing unit 105. ) And magnetic gap 108.
- the magnet 101 has a ring shape, where the ring shape includes not only a circular ring shape but also a rectangular and oval ring shape.
- the bottom of the magnet 101 is attached to the first plate 102.
- the first plate 102 not only supports the magnet 101 but also has a form extending further in the center direction of the ring.
- the inner edge extending from the first plate 102 forms an upwardly projecting first magnetic gap providing portion 103.
- the upper surface of the magnet 101 is bound to the second plate 104.
- the second plate 104 not only covers the magnet 101, but also has a form extending further in the center direction of the ring.
- the inner edge extending from the second plate 104 forms a downwardly protruding second magnetic gap providing portion 105.
- the gap between the first magnetic gap provider 103 and the second magnetic gap provider 105 forms a magnetic gap 108.
- the first plate 102, the second plate 104, the first magnetic gap providing unit 103 and the second magnetic gap providing unit 105 are formed by the magnetic flux generated by the magnet 101. It provides a path to pass, thus acting as a yoke.
- FIG. 6 illustrates an embodiment in which an S pole is formed at an upper portion of the magnet 101 and an N pole is formed at the lower portion thereof, an N pole may be formed at an upper portion of the magnet 101 and an S pole may be formed at a lower portion thereof. It is self-evident.
- the magnetic flux starting at the lower N pole of the magnet 101 is characterized by the first plate 102, the first magnetic gap providing part 103, the magnetic gap 108, and the second magnetic gap agent. Study 105, through the second plate 104, to the upper S pole. According to the flow of magnetic flux, the magnetic circuit of the speaker according to the present invention is constructed.
- FIG. 7 is a sectional view showing a first embodiment of a speaker according to the present invention.
- a magnetic circuit is constructed based on the characteristics of the magnetic circuit shown in FIG.
- the magnetic circuit of the speaker according to the present embodiment includes a magnet 201, a first plate 202, a second plate 204, a first magnetic gap providing unit 203, and a second magnetic gap providing unit ( 205 and the magnetic gap 220.
- the magnet 201 is formed with the N pole and the S pole in the vertical direction.
- the magnet 201 has a ring shape, but preferably has an elliptic ring shape.
- the first plate 202 is attached to the bottom surface of the magnet 201, and the second plate 204 is attached to the top surface of the magnet 201.
- the first plate not only supports the magnet 201, but extends in the center direction of the ring.
- the second plate not only covers the upper surface of the magnet 201, but extends in the center direction of the ring.
- the first magnetic gap providing portion 203 protrudes upward from the extended portion of the first plate 202, and the second magnetic gap providing portion 205 protrudes downward from the extended portion of the second plate 204.
- the first magnetic gap providing unit 203 and the second magnetic gap providing unit 205 form a gap by a predetermined distance from each other, thereby providing the magnetic gap 220.
- first plate 202, the second plate 204, the first magnetic gap providing unit 203 and the second magnetic gap providing unit 205 provide a passage path for the magnetic flux generated in the magnet 201, the yoke ( yoke).
- the upper portion of the second plate 204 is preferably provided with a stepped step from the outside of the ring to the inside, so that the diaphragm 209 can be easily attached without a separate jig.
- the vibration system of the speaker includes a diaphragm 209, a bobbin 207, a voice coil 208, and an edge portion 210.
- the voice coil 208 is wound around the bobbin 207, which is connected to the diaphragm 209.
- the diaphragm 209 is cone shape which has a dome in a center part.
- the central dome shape of the diaphragm 209 improves the frequency characteristics of the audio band and reduces the height of the diaphragm 209.
- the outer diameter of the diaphragm 209 is preferably formed in an oval shape along the ring shape of the magnet 201.
- the voice coil 208 is located in the magnetic gap 220 formed by the first magnetic gap provider 203 and the second magnetic gap provider 205.
- the voice coil 208 has a winding width of approximately 2 mm and preferably consists of one winding layer.
- the voice coil 208 is wound around the bobbin 207, and the bobbin 207 transfers the movement of the voice coil 208 to the diaphragm 209 according to the applied electric signal.
- Bobbin 207 is preferably formed in an oval shape according to the ring shape of the magnet 201.
- the bobbin 207 according to the present invention will have a significantly increased aperture compared to the bobbin according to the prior art.
- the edge portion 210 is attached to the step of the second plate 204, and the edge portion 210 preferably has a wave shape.
- the edge portion 210 connects the steps of the diaphragm 209 and the second plate 204 to smooth the vibration of the diaphragm 209 and to control the vibration range of the diaphragm 209. .
- the speaker according to the present embodiment preferably includes a damper 211 for supporting the diaphragm 209 and controlling the vibration range of the diaphragm 209.
- One end of the damper 211 is bound to the inner surface of the first magnetic gap providing part 203, and the other end is bound to the diaphragm 209.
- a plurality of through holes are formed in the damper 211 to improve air permeability.
- the lead wire 212 is connected to the voice coil 208 to transmit an external amplifier signal to the voice coil 208. It is preferable that a gasket 214 having elasticity is attached to the step of the second plate 204.
- the diaphragm 209 vibrates smoothly. Rather, it is to prevent the occurrence of resonance sound with the electronics case.
- the speaker according to the present embodiment may have a component for radioactive treatment.
- the magnetic flux generated from the magnet 201 may be prevented from flowing out of the speaker by binding the magnetic shield magnet 215 to the lower surface of the first plate 202 and covering the magnetic shield cap 216.
- the speaker according to the present invention since the height of the ring-shaped magnet (or the height of the magnetic circuit) determines the height of the speaker, provides a speaker that is significantly reduced in thickness compared to the prior art. That is, according to the speaker of the prior art, since the vibration system is formed above the magnetic circuit, the thickness of the speaker is the sum of the height of the magnetic circuit and the height of the vibration system. However, according to the present invention, since the vibrometer is surrounded by the magnetic circuit, the thickness of the speaker is determined by the height of the magnetic circuit. Therefore, the thickness of the speaker is reduced by the height of the vibration system.
- the strength of the magnetic field of the magnetic circuit is dependent on the volume of the magnet
- the speaker according to the present invention can maintain the volume while reducing the thickness of the magnet, since the magnet is made of the outer diameter of the speaker, reducing the height of the magnetic circuit It becomes possible.
- the diameter of the bobbin on which the voice coil is wound increases, thereby providing a high sound pressure.
- the yoke functions as a frame forming the outer shape of the speaker, since a separate frame is omitted, the size of the magnetic circuit can be increased accordingly.
- FIG. 8 is a sectional view showing a second embodiment of a speaker according to the present invention. This embodiment relates to a speaker to which the magnetic circuit shown in FIG. 6 is applied.
- the magnetic circuit of the speaker according to the present embodiment includes a magnet 301, a first plate 302, a second plate 304, a first magnetic gap providing unit 303, and a second magnetic gap providing unit ( 305 and the magnetic gap 320.
- the magnet 301 is formed with the N pole and the S pole in the vertical direction.
- the magnet 301 has a ring shape, it may have a ring shape of circular, oval or square.
- the first plate 302 is fastened to the bottom of the magnet 301
- the second plate 304 is fastened to the upper surface of the magnet 301.
- the first plate not only supports the magnet 301 but also extends in the center direction of the ring.
- the second plate not only covers the upper surface portion of the magnet 301 but also extends in the center direction of the ring.
- the first magnetic gap providing portion 303 protrudes upward from the extended portion of the first plate 302, and the second magnetic gap providing portion 305 protrudes downward from the extended portion of the second plate 304.
- the first magnetic gap providing unit 303 and the second magnetic gap providing unit 305 form a gap by a predetermined distance from each other, thereby providing the magnetic gap 320.
- first plate 302 the second plate 304, the first magnetic gap providing unit 303 and the second magnetic gap providing unit 305 provide a passage path for the magnetic flux generated in the magnet 301, the yoke ( yoke).
- the first plate 302 has a groove 312 and a plurality of through holes 306.
- the through hole 306 is for easily dissipating heat generated from the voice coil 308, the groove 312 is not in contact with the first plate 302 during the vertical movement according to the instantaneous output of the voice coil 308. This is to avoid.
- Arrows 313 and 314 in the figure show passages of heat emitted from the voice coil 308.
- the heat generated in the voice coil 308 is not only formed in the through hole 306 formed in the first plate 302 but also in the direction of the center of the speaker in the magnetic gap 320. Release is possible. As such, when heat is easily released, the durability of the speaker is improved.
- the upper portion of the second plate 304 is preferably provided with a stepped step from the outside of the ring to the inside, so that the diaphragm 309 can be easily attached without a separate jig.
- the vibration system of the speaker includes a diaphragm 309, a bobbin 307, a voice coil 308, and an edge portion 310.
- the voice coil 308 is wound around the bobbin 307, which is connected to the diaphragm 309.
- the diaphragm 309 preferably has a reverse dome shape.
- the voice coil 308 is located in the magnetic gap 320 formed by the first magnetic gap provider 303 and the second magnetic gap provider 305.
- the winding width of the voice coil 308 is preferably 3.2 mm, and the wire diameter is preferably 0.25 mm for durability.
- f0 lowest reproduction limit frequency
- the voice coil 308 is wound around the bobbin 307, and the bobbin 307 performs a function of transmitting the movement of the voice coil 308 to the diaphragm 309 according to the applied electric signal.
- the bobbin 307 according to the present invention will have a significantly increased aperture compared to the bobbin according to the prior art.
- the edge portion 310 is attached to the step of the second plate 304, and the edge portion 310 preferably has a wave shape.
- the edge portion 310 connects the steps of the diaphragm 309 and the second plate 304 to smooth the vibration of the diaphragm 309 and to control the vibration range of the diaphragm 309. .
- the speaker according to the present embodiment preferably includes a damper 311 for supporting the diaphragm 309 and controlling the vibration range of the diaphragm 309.
- One end of the damper 311 is bound to the inner surface of the first magnetic gap providing part 303, and the other end is bound to the diaphragm 309.
- the lead wire 312 is connected to the voice coil 308 to transmit an external amplifier signal to the voice coil 308.
- FIG. 9 is a sectional view showing a third embodiment of a speaker according to the present invention. This embodiment relates to a speaker to which the magnetic circuit shown in FIG. 6 is applied.
- the speaker according to the present embodiment has a structure basically the same as that of the speaker according to the second embodiment.
- the damper is not provided. This is because the loudspeaker according to the present embodiment is mainly used in the midrange band, and thus the vibration width of the diaphragm is not large for the band of 300 Hz or more.
- the voice coil is a durable aluminum coil. Moreover, it is preferable to make the winding width of a voice coil into 2.5 mm, and to form in one winding layer.
- FIG. 10 is a sectional view showing a fourth embodiment of a speaker according to the present invention. This embodiment relates to a speaker to which the magnetic circuit shown in FIG. 6 is applied.
- the speaker according to the present embodiment has a structure basically the same as that of the speaker according to the second embodiment. However, unlike the speaker of the second embodiment, it has a through cap 507 and the bottom portion 508, the edge portion 506 has a rib shape (rib).
- the edge part 506 is made into a lip shape, and it is for making a rough high pitched sound more natural.
- the through cap 507 is preferably a metal material of the mesh form. It is also desirable to have a plurality of through-holes through which sound is emitted.
- the bottom portion 508 is also preferably a metal material in the form of a mesh similar to the through cap 507. The bottom portion 508 provides high sound quality by minimizing diffraction, reflected waves, and standing waves of the bottom vibration sound of the diaphragm 505. In addition, the bottom portion 508 facilitates the emission of heat generated from the voice coil 503, thereby improving the durability of the speaker.
- FIG. 11 is a graph showing sound pressure and frequency characteristics of the speaker according to FIG. 1 and the speaker according to the first embodiment of the present invention. This graph is based on a 1m distance, 1W output, and 2.83V applied to an 8 ⁇ speaker using an LSM measuring instrument and measuring microphone. As shown in FIG. 11, it can be seen that the sound pressure of the speaker according to the first embodiment of the present invention is 7 dB higher than that of the speaker of FIG. 1 according to the prior art.
- FIG. 12 is a graph illustrating sound pressure and frequency characteristics of a 4 inch speaker according to the related art and a speaker according to a third embodiment of the present invention. This graph is based on a 1m distance, 1W output, and 2.83V applied to an 8 ⁇ speaker using an LSM measuring instrument and measuring microphone. As shown in FIG. 12, it can be seen that the sound pressure of the speaker according to the third embodiment of the present invention is 6 dB higher than that of the conventional 4 inch speaker.
- the present invention can be used in a speaker for converting an electrical signal into a sound.
Abstract
Description
Claims (9)
- 자기회로와 진동계를 포함하여 이루어지되,상기 자기회로는,링 형상을 가지며, 상기 링의 하면부는 제 1 극성을 가지고, 상면부는 상기 제 1 극성과 반대되는 제 2 극성을 가지는 마그네트;상기 링 형상 마그네트의 하면부에 결착되고, 상기 링의 중심 방향으로 연장되는 제 1 플레이트;상기 제 1 플레이트와 연결되고, 상기 제 1 플레이트로부터 상향 돌출된 제 1 자기 갭 제공부;상기 링 형상의 마그네트의 상면부에 결착되고, 상기 링의 중심 방향으로 연장되는 제 2 플레이트; 및상기 제 2 플레이트와 연결되고, 상기 제 2 플레이트로부터 하향 돌출된 제 2 자기 갭 제공부를 포함하여 이루어지는 스피커.
- 제 1 항에 있어서,상기 제 1 자기 갭 제공부는 상기 제 1 극성을 가지며, 상기 제 2 자기 갭 제공부는 상기 제 2 극성을 가지는 것을 특징으로 하는 스피커.
- 제 1 항에 있어서,상기 제 1 자기 갭 제공부와 상기 제 2 자기 갭 제공부는 상호 이격되어 자기 갭을 형성하는 것을 특징으로 하는 스피커.
- 제 3 항에 있어서,상기 진동계는,전기 신호가 인가되는 도선으로서, 상기 자기 갭 내에 위치하여, 상기 전기 신호 및 상기 자기 갭 내에 형성된 자기장에 따라 기계적인 운동을 수행하는 보이스 코일;상기 보이스 코일이 권선되며, 상기 보이스 코일의 진동을 전달하는 보빈;상기 보빈으로부터 상기 보이스 코일의 진동을 전달받아 진동함으로써, 소리를 발생시키는 다이어프램; 및상기 제 2 플레이트의 상면부에 연결되어 상기 다이어프램을 지지하는 에지부를 포함하여 이루어지는 스피커.
- 제 4 항에 있어서,상기 제 2 플레이트의 상면부는 단턱을 가지며, 상기 에지부는 상기 단턱에 결착되는 것을 특징으로 하는 스피커.
- 제 4 항에 있어서,상기 진동계는, 상기 링의 중심을 기준으로, 자기회로 안쪽에 형성되는 것을 특징으로 하는 스피커.
- 제 4 항에 있어서,일단은 다이어프램에 결착되고, 타단은 제 1 자기 갭 제공부에 결착되어, 상기 다이어프램의 진동 범위를 제어하는 댐퍼를 더 포함하여 이루어지는 스피커.
- 제 4 항에 있어서,상기 마그네트의 자속이 외부로 누설되는 것을 차단하기 위한 방자 마그네트를 더 포함하여 이루어지는 스피커.
- 제 4 항에 있어서,상기 다이어프램의 상면부를 덮되, 다수의 통공을 가지는 통공캡; 및상기 다이어프램의 하면부를 덮는 저면부를 더 포함하여 이루어지는 스피커.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800280793A CN102986248A (zh) | 2010-04-20 | 2011-04-06 | 扬声器 |
JP2013506065A JP2013526176A (ja) | 2010-04-20 | 2011-04-06 | スピーカ |
US13/656,768 US20130039529A1 (en) | 2010-04-20 | 2012-10-22 | Speaker |
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KR20100036260 | 2010-04-20 | ||
KR10-2010-0036260 | 2010-04-20 | ||
KR1020110025784A KR101186727B1 (ko) | 2010-04-20 | 2011-03-23 | 스피커 |
KR10-2011-0025784 | 2011-03-23 |
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US13/656,768 Continuation US20130039529A1 (en) | 2010-04-20 | 2012-10-22 | Speaker |
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WO2011132870A2 true WO2011132870A2 (ko) | 2011-10-27 |
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CN114157955A (zh) * | 2021-11-30 | 2022-03-08 | 歌尔股份有限公司 | 发声装置 |
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KR20040078705A (ko) * | 2003-03-04 | 2004-09-13 | (주) 모토조이 | 경량 스피커 |
JP3841222B1 (ja) * | 2005-01-28 | 2006-11-01 | 松下電器産業株式会社 | 動電型電気音響変換器および電子機器 |
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KR20030083171A (ko) * | 2002-04-19 | 2003-10-30 | 주식회사 삼진 | 스피커 유닛 |
KR20040078705A (ko) * | 2003-03-04 | 2004-09-13 | (주) 모토조이 | 경량 스피커 |
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