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WO2018170939A1 - Haut-parleur de type à aimant mobile - Google Patents

Haut-parleur de type à aimant mobile Download PDF

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Publication number
WO2018170939A1
WO2018170939A1 PCT/CN2017/078748 CN2017078748W WO2018170939A1 WO 2018170939 A1 WO2018170939 A1 WO 2018170939A1 CN 2017078748 W CN2017078748 W CN 2017078748W WO 2018170939 A1 WO2018170939 A1 WO 2018170939A1
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WO
WIPO (PCT)
Prior art keywords
magnet
voice coil
motor
vibrator
speaker according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2017/078748
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English (en)
Chinese (zh)
Inventor
汲鹏程
许超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goertek Inc
Original Assignee
Goertek Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Goertek Inc filed Critical Goertek Inc
Publication of WO2018170939A1 publication Critical patent/WO2018170939A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04R9/06—Loudspeakers
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers

Definitions

  • the present invention relates to the field of electroacoustic products, and in particular to a moving magnetic speaker capable of realizing the functions of a speaker and a linear vibration motor.
  • the speaker is an important acoustic component of portable electronic equipment. It is used to convert electrical signals and sound signals. It is an energy conversion device. Linear vibration motor is one of the motors and an important component of portable electronic devices. A function to achieve vibration alerting.
  • the speakers used in portable electronic devices are mostly moving coil speakers. Due to the principle of the dynamic speaker, the high frequency transient response is poor, and the high frequency performance is low, which is difficult to meet the current Hi-Fi (high fidelity) equipment. Performance requirements.
  • the speaker and the vibration motor are usually packaged in a single housing to form a two-in-one product to reduce the space occupied, but when using a moving coil speaker to make a two-in-one product, only The Z-direction motor can be made, that is, the vibration direction of the vibration motor is vertical, which makes the thickness of the product large and cannot meet the requirements of ultra-thin portable electronic equipment.
  • the technical problem to be solved by the present invention is to provide a moving magnetic speaker which has high frequency transient response and can realize the function of a linear vibration motor, and can adjust the diaphragm conveniently.
  • the invention provides a moving magnetic speaker, comprising a housing, wherein the housing houses a diaphragm and a vibrator disposed in parallel with the diaphragm, the vibrator includes a voice coil; and a driving magnet is fixed on the diaphragm
  • the voice coil is energized to form an electromagnet, and an interaction force is generated with the driving magnet to drive the diaphragm a vibration sounding;
  • a vertical through hole is disposed at a position corresponding to the driving magnet on the diaphragm, the driving magnet is installed in the vertical through hole; and a motor magnet is fixed in the housing;
  • the ring is fixed on the basin frame, and the two ends of the basin frame are respectively fixed with elastic supporting members; the elastic supporting member has an elastic deformation space in a horizontal direction; the magnetic line of the motor magnet cuts the voice coil, thereby The vibrator is pushed to vibrate in the horizontal direction.
  • the driving magnet is provided with two pieces, and the voice coil is provided with two corresponding to the two driving magnets; the magnetization directions of the two driving magnets are opposite, two The current flowing in the voice coil is in the opposite direction.
  • a vertical through hole is further disposed at a position corresponding to the motor magnet on the diaphragm, and the motor magnet is installed in the vertical through hole.
  • the two sides of the two voice coils are disposed with a magnetic conductive component, and the two magnetic conductive components are identical in structure and oppositely disposed, and the structure of the magnetic conductive component is adapted to the structure of the voice coil. .
  • the driving magnet is provided with three blocks, and the voice coil is provided with three, respectively corresponding to three of the driving magnets; the driving magnet located at the center and two pieces located on both sides
  • the magnetization directions of the drive magnets are opposite, and the direction of the energization current of the voice coil located at the center is opposite to the direction of the energization current of the two voice coils located at both sides.
  • the motor magnet is provided with two blocks, two of the motor magnets are fixedly disposed under the vibrator, and two of the motor magnets and three of the driving magnets are arranged in a vertical direction, and two blocks are arranged. The magnetization direction of the motor magnet is reversed.
  • each of the voice coils is provided with a magnetically permeable member, and the three magnetically permeable members respectively cover the upper surface of each of the voice coils and are opposite to the center of each of the voice coils on the upper surface of the voice coil.
  • the position is provided with a relief opening, and the two magnetic conductive members disposed on the two voice coils on both sides further cover the outer side surface and the lower surface of the two voice coils on both sides, two The magnetically permeable member covers a portion of the lower surface of the voice coil that covers the center of the voice coil.
  • the bottom of the basin frame is provided with an opening corresponding to the position of the two motor magnets, and a vibration space is arranged between the bottom of the basin frame and the two motor magnets in the horizontal direction.
  • the vibrator further includes a magnet disposed between the adjacent two of the voice coils and disposed opposite to the motor magnet, the magnetization direction of the magnet being vertical, and the magnetization direction of the magnet is opposite thereto The magnetization direction of the motor magnet should be reversed.
  • each of the voice coils is provided with an armature at a center thereof, and each of the armatures is respectively disposed opposite to each of the driving magnets, and the armature changes its own magnetization direction according to a change of a current direction passing through the voice coil.
  • the armature and the voice coil together form the electromagnet.
  • the voice coil, the armature and the magnet are both fixed on the basin frame to jointly form the vibrator.
  • the diaphragm comprises an annular folding ring and a vibration plate disposed at a middle portion of the folding ring, and the vertical through hole is located on the vibration plate.
  • the middle portion of the vibrating plate is provided with strip-shaped protrusions.
  • the housing comprises an upper shell and a lower shell joined together; the diaphragm is mounted on the upper casing, and the upper casing is provided with an acoustic hole; the vibrator passes through the elastic support Mounted on the lower case.
  • the bottom of the lower case protrudes from the two ends of the lower case with a fixing portion, and the FPCB for electrically connecting the voice coil and the external circuit is located at a position outside the lower case. Said on the fixed part.
  • the elastic support member comprises two elastic arms, and the two elastic arms are integrally connected at an end of the same side, the elastic arm is made of a wire of a flat structure, and the wire is vertically
  • the widths are all greater than their widths in the lateral direction; the ends of the two elastic arms that are not connected are fixedly connected to the basin frame and the lower casing, respectively.
  • the moving magnetic speaker of the present invention comprises a casing, a diaphragm, a vibrator and a motor magnet are accommodated in the casing, a vertical through hole is arranged on the diaphragm, and a driving magnet is installed in the vertical through hole; the voice coil is energized to form The electromagnet interacts with the driving magnet to drive the diaphragm to sound; the voice coil is fixed on the basin frame, and the elastic support members are respectively fixed at the two ends of the basin frame; the elastic supporting member has an elastic deformation space in the horizontal direction; the motor magnet The magnetic wire cuts the voice coil, which can push the vibrator to vibrate in the horizontal direction.
  • the speaker of the present invention is a moving magnetic speaker.
  • the voice coil When the voice coil passes the alternating audio current, the voice coil forms an electromagnet and interacts with the driving magnet. Since the voice coil is fixed in the vertical direction, the driving magnet will Vibrating up and down, the diaphragm vibrates up and down along with the driving magnet, thereby inducing the sound of the air to realize the function of the speaker, and the ampere force generated by the original voice coil cutting magnetic line becomes the interaction between the electromagnet and the permanent magnet. Force, in principle, improves the high-frequency transient response of the moving coil speaker, and improves the high-frequency performance; when the voice coil passes the alternating current signal, the magnetic line of the motor magnet cuts the energized voice coil.
  • the voice coil is subjected to the action of the Lorentz force to generate an X-direction motion, thereby realizing the vibration of the vibrator in the horizontal direction, that is, the vibration function of the motor is realized.
  • the driving magnet is installed in the vertical through hole of the diaphragm, the upper and lower vibration spaces of the diaphragm can be conveniently adjusted by controlling the position of the driving magnet through the diaphragm; in addition, the driving magnet and the diaphragm have a thickness in the overlap.
  • the part can fully utilize the overall space of the product; the position of the driving magnet can be adjusted to adjust the mutual attraction and repulsive force between the driving magnet and the vibrator, and the balance of the diaphragm can be conveniently adjusted.
  • the high-frequency transient response of the moving magnetic speaker of the invention can meet the acoustic performance requirements of the high-fidelity equipment, and can realize the function of the linear vibration motor, and can conveniently adjust the vibration space of the diaphragm, and the space utilization rate is high.
  • the thickness is small and the occupied space is small.
  • the driving magnet is provided with a plurality of blocks, so that the number of voice coils corresponds to the driving magnet, so that the diaphragm is more evenly stressed, the vibration stability and balance of the diaphragm are improved, and the polarization of the diaphragm is prevented.
  • the vibrator further includes a magnet disposed between the adjacent two voice coils opposite to the motor magnet, the magnetization direction of the magnet is vertical, and the magnetization direction of the magnet is opposite to the magnetization direction of the motor magnet.
  • the magnet can shift the magnetic induction line of the motor magnet to both sides, making it more through the voice coil, which improves the working efficiency of the vibration motor.
  • each of the voice coils is provided with an armature at the center, the armatures are respectively disposed opposite to the corresponding driving magnets, and the armature changes its magnetization direction according to the change of the current direction through the voice coil.
  • the voice coil is energized, the armature can be magnetized, and the voice coil and the armature together form an electromagnet, which increases the strength of the magnetic field generated by the voice coil, enhances the force with the driving magnet, and improves the sensitivity of the speaker.
  • the magnetic coil is provided with a magnetic conductive member, the magnetic conductive member can gather the magnetic field generated by the voice coil inward to reduce magnetic leakage, thereby effectively increasing the magnetic field strength, and further improving the sensitivity of the speaker.
  • the elastic support member includes two elastic arms integrally connected at one end, the elastic arms are made of a wire of a flat structure, and the width of the wire in the vertical direction is greater than the width in the lateral direction, and the elastic support member of the structure occupies The vibration space is small, and the strength of the elastic support member in the vertical direction can be increased, the weight of the vibrator can be better taken, the stability and balance of the vibrator vibration can be improved, and the vibrator can be prevented from being polarized and generating noise during vibration.
  • the moving magnetic speaker of the present invention solves the technical problems of low-frequency transient response difference and large thickness of the speaker and motor combo products in the prior art, and the high-frequency transient response of the moving magnetic speaker of the present invention Good, and can easily adjust the vibration space of the diaphragm, high space utilization, small thickness, high performance, high stability and reliability, to meet the performance requirements of high fidelity equipment.
  • FIG. 1 is a schematic exploded view of a moving magnetic speaker according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional structural view of a moving magnetic speaker according to a first embodiment of the present invention
  • FIG. 3 is a schematic view showing the working principle of a speaker of a moving magnetic speaker according to a first embodiment of the present invention
  • FIG. 4 is a schematic view showing the working principle of a motor of a moving magnetic speaker according to a first embodiment of the present invention
  • FIG. 5 is a schematic exploded view of a moving magnetic speaker according to a second embodiment of the present invention.
  • FIG. 6 is a cross-sectional structural view of a moving magnetic speaker according to a second embodiment of the present invention.
  • the orientations referred to in this specification refer to the orientation in which the sounding unit is located, and the azimuth refers to the orientation in which the vibrator is located.
  • the inner side referred to in this specification refers to the side close to the center of the moving magnetic speaker, and the outer side refers to the side away from the center of the moving magnetic speaker.
  • the X direction referred to in this specification refers to the horizontal direction, and the Z direction refers to the vertical direction. .
  • a moving magnetic speaker is a rectangular parallelepiped structure including a casing and a diaphragm and a vibrator housed in the casing, and the diaphragm is arranged in parallel with the vibrator.
  • the casing includes an upper casing 12a and a lower casing 10a which are vertically joined together, the upper casing 12a is a box-like structure in which the lower end is open, and the lower casing 10a is open at the upper end.
  • the box-like structure of the mouth, the open end of the upper case 12a is fastened to the open end of the lower case 10a.
  • the diaphragm is fixedly mounted on the upper casing 12a, and the sound hole 120 is disposed in the middle of the upper casing 12a.
  • the vibrator is suspended in the space enclosed by the upper casing 12a and the lower casing 10a by two elastic supporting members 39, and two elastic supporting members. 39 is fixedly coupled to the lower case 10a.
  • a driving magnet 24a and a motor magnet 26a are fixed to the middle of the diaphragm, and the positions of the diaphragm corresponding to the driving magnet 24a and the motor magnet 26a are respectively provided to be compatible with the driving magnet 24a and the motor magnet 26a.
  • the vertical through hole 200 is provided, and the driving magnet 24a and the motor magnet 26a are bonded and fixed in the corresponding vertical through holes 200, and the magnetization directions of the driving magnet 24a and the motor magnet 26a are both vertical.
  • the diaphragm includes an annular folding ring 22a at the edge and a vibration plate 20a disposed at a central portion of the folding ring 22a.
  • the vertical through hole 200 is disposed on the vibration plate 20a, that is, the driving magnet 24a and the motor magnet 26a are both fixed.
  • the upper side of the edge portion of the folding ring 22a is fixed with a backing ring 28, and the backing ring 28 is fixed to the inner side of the top of the upper casing 12a, thereby fixing the sounding unit to the upper casing 12a.
  • the vibrator includes a voice coil 34a.
  • the voice coil 34a has a flat structure and is horizontally fixed to a basin frame 30a.
  • the two elastic supporting members 39 are fixedly coupled to the two ends of the basin frame 30a, specifically, one end of the elastic supporting member 39 and the basin frame.
  • the 30a is fixedly connected, and the other end of the elastic support member 39 is fixedly coupled to the lower case 10a, thereby suspending the vibrator in a space surrounded by the upper case 12a and the lower case 10a.
  • the voice coil 34a When the voice coil 34a is energized, an electromagnet is formed, and an interaction force is generated with the drive magnet 24a to drive the diaphragm to vibrate, and the magnetic flux of the motor magnet 26a cuts the voice coil 34a to push the vibrator to vibrate in the horizontal direction.
  • the driving magnet 24a is provided with two pieces, the motor magnet 26a is located between the two driving magnets 24a, and the voice coil 34a is also provided with two, respectively, and two driving magnets 24a.
  • the magnetization directions of the two driving magnets 24a are opposite, and the energizing current directions of the two voice coils 34a are also opposite, as shown in FIG.
  • the two driving magnets 24a correspond to the centers of the two voice coils 34a, respectively, and the motor magnets 26a correspond to the side closer to the two voice coils 34a.
  • the center positions of the two voice coils 34a are respectively provided with an armature 36a.
  • the two armatures 36a are respectively disposed opposite to the two driving magnets 24a, and the two armatures 36a are respectively passed according to FIG.
  • the magnetization direction of the corresponding voice coil 34a changes its own magnetization direction, and the two armatures 36a and the corresponding voice coil 34a respectively form two electromagnets.
  • the magnetic shield member 32a is disposed on each side of the two voice coils 34a away from each other, and the two magnetic conductive members 32a are identical in structure and disposed opposite to each other.
  • the structure of the magnetic conductive member 32a is adapted to the structure of the voice coil 34a on the side of the center line, that is, the magnetic conductive member 32a and the half
  • the structure of the voice coil 34a is adapted to cover only half of the side surface and half of the upper surface of the voice coil 34a, which can gather the magnetic field toward the center to reduce magnetic flux leakage.
  • a further preferred vibrator of the present embodiment further includes a magnet 38a disposed between the two voice coils 34a.
  • the magnet 38a is also fixed to the basin frame 30a, and the magnetization direction of the magnet 38a is also vertical.
  • the magnetization direction of the magnet 38a is opposite to the magnetization direction of the motor magnet 26a, as shown in FIG.
  • the size of the motor magnet 26a in the vibrator vibration direction is larger than the size of the magnet 38a in the vibrator vibration direction, and the magnet 38a corresponds to the center position of the motor magnet 26a.
  • the basin frame 30a includes a rectangular bottom portion, and the four corner portions of the bottom portion are each provided with a mounting portion 300a which is perpendicular to the bottom portion and extends upward.
  • the two voice coils 34a, the two armatures 36a and the magnets 38a are fixed to the bottom of the basin frame 30a to form a vibrator, and the ends of the elastic support members 39 are fixed to the mounting portion 300.
  • the two elastic support members 39 have the same structure.
  • the elastic support member 39 includes two elastic arms, each of which is made of a flat-structured wire, and the width of the wire in the vertical direction is greater than the width in the lateral direction, and the two elastic arms are located at the end of the same side.
  • the connection is integrated, and the two elastic arms are at an angle. In the embodiment, the angle is an acute angle, and the ends of the two elastic arms are not fixedly connected to the mounting portion 300 and the lower casing 10a of the basin frame 30a, respectively.
  • the connection point between the basin frame 30a and the lower casing 10a is located on the same side of the center line in the vibration direction of the vibrator.
  • the two elastic supporting members 39 are symmetrically arranged with respect to the diagonal of the vibrator, that is, the two elastic supporting members 39 are respectively fixedly and fixedly coupled to the two mounting portions 300 on the same diagonal line at the bottom of the basin frame 30a.
  • a bottom portion of the lower casing 10a protrudes from a fixed portion 100 at a lower end of each of the lower shells 10a, and a horizontally extending escape hole 102 is disposed at a lower end of the lower shell sidewalls at the two ends.
  • a portion of the FPCB 40 located outside the lower case 10 is attached and fixed to the fixing portion 100.
  • the working principle of the moving magnetic speaker of the present invention is as follows:
  • Figure 3 shows the working principle of the speaker.
  • the vibration direction of the sounding unit is vertical.
  • ⁇ indicates that the current direction is perpendicular to the paper surface, Indicates that the current direction is perpendicular to the paper facing inward.
  • the upper end of the drive magnet 24a on the left side is set to the S pole, the lower end is the N pole, and the drive magnet 24a on the right side has the N pole at the upper end and the S pole at the lower end.
  • the current directions of the two voice coils 34a are as shown in the figure. According to the right hand rule, the voice coil 34a located on the left side generates an upward magnetic field. As indicated by the arrow 52, the armature 36a located at the center of the voice coil 34a.
  • the upper end is an N pole, repelling the drive magnet 24a on the left side, and the moving direction of the drive magnet 24a on the left side is upward, as indicated by an arrow 56; at this time, the voice coil 34a on the right side generates a downward magnetic field.
  • the upper end of the armature 36a at the center of the voice coil 34a is the S pole, repelling the drive magnet 24a on the right side, and the drive magnet 24a on the right side also moves upward, as indicated by the arrow 54.
  • the diaphragm is thus moved upwards as indicated by arrow 58.
  • the diaphragm will move downward to achieve vibration and sound.
  • Fig. 4 shows the working principle of the motor.
  • the vibrating direction of the vibrator is horizontal.
  • the upper end of the motor magnet 26a is set to the S pole and the lower end is the N pole.
  • the upper end of the magnet 38a is the N pole and the lower end is the S pole.
  • the magnetic field directions of the magnet 26a and the magnet 38a are respectively indicated by arrows 62 and 60, and the magnet 38a divides the magnetic line of the motor magnet 26a toward both sides, more through the two voice coils 34a, as indicated by arrows 64 and 66.
  • the Lorentz force received by the voice coil 34a on the left side can be decomposed into two forces to the left and upward, and the Lorentz force received by the voice coil 34a on the right side can be decomposed to the left.
  • the two downward forces where the two forces up and down cancel each other out, the entire vibrator will move to the left, as indicated by arrow 68.
  • the vibrator Even if the upward and downward forces are not equal and cannot be completely canceled, the vibrator will not be displaced in the vertical direction under the fixation of the elastic support member 39, and can only be displaced in the horizontal direction.
  • the vibrator will move to the right, thereby achieving linear horizontal vibration.
  • This embodiment is basically the same as the first embodiment, and the difference is that:
  • the driving magnet 24b is provided with three blocks, and the corresponding voice coil 34b is provided with three.
  • the three voice coils 34b are respectively provided with an armature 36b at the center, and three armatures 36b and three driving magnets respectively.
  • 24b is correspondingly disposed; the centrally located drive magnet 24b is opposite to the magnetization direction of the two drive magnets 24b on both sides, and the direction of the energizing current of the centrally located voice coil 34b is opposite to the direction of the energizing current of the two voice coils 34b located on both sides.
  • the folding ring 22b is a silicone folding ring, and is combined with the upper casing 12b and the vibration plate 20b by an injection molding process.
  • the vibration plate 20b is provided with three vertical through holes 200, and the three driving magnets 24b are respectively The bonding is fixed in the three vertical through holes 200.
  • a vibration located between two adjacent vertical through holes 200 A plurality of protrusions 202 are arranged in parallel on the movable plate 20b.
  • the extending direction of the protrusions 202 is consistent with the extending direction of the short side of the vibration plate 20b.
  • the protrusions 202 can improve the rigidity of the vibration plate and improve the high frequency performance of the speaker.
  • the motor magnet 26b is provided with two pieces, and the two motor magnets 26b are fixedly disposed below the vibrator, that is, fixed to the bottom of the lower case 10b, and two motor magnets 26b and three driving magnets.
  • the 24b is staggered in the vertical direction, that is, one motor magnet 26b simultaneously corresponds to the side in which the currents of the adjacent two voice coils 34b flow in the same direction, that is, the side where the two voice coils 34b are close to each other.
  • the magnetization directions of the two motor magnets 26b are opposite.
  • the vibrator further includes a magnet 38b disposed between the adjacent two voice coils 34b and disposed opposite to the motor magnet 26b.
  • the magnets 38b are provided in two pieces, respectively corresponding to the two motor magnets 26b, and the magnets 38b.
  • the magnetization direction is vertical, the magnetization directions of the two magnets 38b are opposite, and the magnetization direction of the magnet 38b is opposite to the magnetization direction of the motor magnet 26b corresponding thereto.
  • the voice coil 34b, the armature 36b and the magnet 38b are both fixed on a basin frame 30b.
  • the bottom of the basin frame 30b is provided with an opening corresponding to the positions of the two motor magnets 26B, and the basin frame 30b is provided.
  • a vibration space is provided between the bottom and the two motor magnets 26b in the horizontal direction.
  • the two ends of the basin frame 30b are respectively provided with two elastic supporting members 39.
  • the two elastic supporting members 39 at the same end of the basin frame 30b are disposed above and below, and the two elastic supporting members 39 and the basin frame 30b are provided.
  • One end connected to the lower case 10b is located on both sides of the center line of the vibrator in the vibration direction.
  • the three voice coils 34b are respectively provided with a magnetic conductive member, and the two magnetic conductive members 32b disposed on the two voice coils 34b on the two sides are identical in structure and oppositely disposed, and are located at two.
  • the two magnetically permeable members 32b on the two side voice coils 34b simultaneously cover the upper surface, the outer side surface and the partial lower surface of the two voice coils 34b on both sides, and the magnetic conductive member 32b covers the upper surface of the voice coil 34b.
  • a relief opening is provided at a position corresponding to the center of the voice coil 34b (i.e., a position at which the armature 36b is attached), and a portion of the magnetic conductive member 32b covering the lower surface of the voice coil 34b covers the center position of the voice coil 34b, and can be used for the armature 36b.
  • the support function also prevents the armature 36b from interfering with the motor magnet 26b.
  • the magnetic conductive member 32c disposed on the voice coil 34b at the intermediate position is a flat plate structure covering only the upper surface of the voice coil 34b, and the position of the magnetic conductive member 32c with respect to the center of the voice coil 34b at the intermediate position is also provided with avoidance. Open the hole.
  • the working principle of the moving magnetic speaker of the second voice coil of the present embodiment is basically the same as that of the moving magnetic speaker of the two voice coils in the first embodiment, and therefore will not be described here.
  • the input current signal of the voice coil can be adjusted to control whether the product works in the speaker mode or the vibration motor mode. Even if the speaker works with the vibration motor at the same time, the combination of the speaker and the vibration motor greatly improves the space utilization of the portable electronic product while maintaining the same performance.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

L'invention concerne un haut-parleur de type à aimant mobile, comprenant un boîtier (12a ; 10b), lequel boîtier (10a ; 10b) loge un diaphragme vibrant et un vibreur disposé en parallèle avec le diaphragme vibrant, le vibreur comprenant une bobine acoustique (34a), un aimant d'entraînement (24a) étant fixé sur le diaphragme vibrant ; la bobine acoustique (34a) forme un électroaimant après avoir été mise sous tension, et génère une force interactive avec l'aimant d'entraînement (24a) de manière à entraîner le diaphragme vibrant pour vibrer et émettre un son ; une position, correspondant à l'aimant d'entraînement (24a), sur la membrane vibrante, est pourvue d'un trou traversant vertical (200), l'aimant d'entraînement (24a) étant monté dans le trou traversant vertical (200) ; un aimant de moteur (26a) étant également fixé sur le boîtier ; la bobine acoustique (34a) étant fixée sur un panier (30a), avec un organe de support élastique (39) respectivement fixé aux deux extrémités du panier (30a), l'élément de support élastique (39) étant pourvu d'un espace de déformation élastique dans une direction horizontale ; et une ligne d'induction magnétique de l'aimant de moteur (26a) coupant la bobine acoustique (34a), poussant ainsi le vibreur à vibrer dans une direction horizontale. Le haut-parleur de type à aimant mobile a une bonne réponse transitoire à haute fréquence, peut régler de manière commode l'espace de vibration du diaphragme vibrant, et possède un taux d'utilisation d'espace élevé.
PCT/CN2017/078748 2017-03-18 2017-03-30 Haut-parleur de type à aimant mobile Ceased WO2018170939A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710162686.8 2017-03-18
CN201710162686.8A CN106714052B (zh) 2017-03-18 2017-03-18 动磁式扬声器

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Publication Number Publication Date
WO2018170939A1 true WO2018170939A1 (fr) 2018-09-27

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PCT/CN2017/078748 Ceased WO2018170939A1 (fr) 2017-03-18 2017-03-30 Haut-parleur de type à aimant mobile

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WO (1) WO2018170939A1 (fr)

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CN114268890A (zh) * 2021-11-16 2022-04-01 歌尔科技有限公司 一种喇叭与马达的组合结构

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CN107396268B (zh) * 2017-07-28 2023-08-25 苏州逸巛科技有限公司 一种振动板及受话器
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