CN214381369U - Sound production device and earphone - Google Patents
Sound production device and earphone Download PDFInfo
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- CN214381369U CN214381369U CN202120300919.8U CN202120300919U CN214381369U CN 214381369 U CN214381369 U CN 214381369U CN 202120300919 U CN202120300919 U CN 202120300919U CN 214381369 U CN214381369 U CN 214381369U
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
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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
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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
- H04R9/04—Construction, mounting, or centering of coil
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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
Abstract
The utility model discloses a sound production device and earphone, sound production device includes high pitch unit and bass unit, high pitch unit include the high pitch casing and locate magnetic conduction vibrating diaphragm and two high pitch magnetic circuit in the high pitch casing, high pitch magnetic circuit including paste establish first magnet steel on the high pitch casing with wind the coil that first magnet steel set up, magnetic conduction vibrating diaphragm suspension is in two between the high pitch magnetic circuit that relative interval set up, the magnetic conduction vibrating diaphragm is used for vibrating the sound production under the effect of the alternating electromagnetic field that the high pitch magnetic circuit produced; bass unit includes the bass casing and locates bass vibrating diaphragm, bass voice coil loudspeaker voice coil and bass magnetic circuit in the bass casing, bass unit with the treble casing is fixed, the bass vibrating diaphragm with the bass voice coil loudspeaker voice coil is connected, bass magnetic circuit is formed with the confession bass voice coil loudspeaker voice coil male bass magnetic gap. The vibration component to be driven by the high-pitch magnetic circuit system is small in mass and high in sound-electricity conversion efficiency.
Description
Technical Field
The utility model relates to an electroacoustic conversion technology field, in particular to sound generating mechanism and earphone.
Background
The sound generating mechanism of conventional earphone generally only contains a vibration unit, and this kind of structural design is fairly simple, but can't compromise the performance and the tone quality of product different frequency channels when high frequency and low frequency well, and tone quality is relatively poor, and the low frequency performance that has some earphones is better, and some then is that the high frequency performance is better. The sound production device with the double vibration units can meet the requirement that low frequency and high frequency work simultaneously, and has complementary and improved effects on performance curves of products and sound quality of listening. However, most of the treble units of the existing earphones are powered on through the voice coil, so that the voice coil moves in the gap, and the voice coil drives the diaphragm to vibrate. Because the in-process of vibrating diaphragm vibration sound production, voice coil loudspeaker voice coil and vibrating diaphragm together move, lead to the vibration quality big, high frequency tone quality is not good, and electro-acoustic conversion efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sound generating mechanism and earphone aims at solving current at least one technical problem that can satisfy the sound generating mechanism of high frequency and low frequency effect simultaneously.
In order to achieve the above object, the utility model provides a sound generating device, sound generating device includes:
the high-pitch unit comprises a high-pitch shell, a magnetic conduction vibrating diaphragm and two high-pitch magnetic circuits, wherein the magnetic conduction vibrating diaphragm and the two high-pitch magnetic circuits are arranged in the high-pitch shell;
bass unit, bass unit includes the bass casing and locates bass vibrating diaphragm, bass voice coil loudspeaker voice coil and bass magnetic circuit in the bass casing, bass unit with the high pitch casing is fixed, the bass vibrating diaphragm with the bass voice coil loudspeaker voice coil is connected, bass magnetic circuit is formed with the confession bass voice coil loudspeaker voice coil male bass magnetic gap.
Optionally, the high-pitch casing includes a first magnetic conductive casing and a second magnetic conductive casing that are spliced together, the second magnetic conductive casing is fixed to the bass unit, the magnetic conductive diaphragm is disposed between the first magnetic conductive casing and the second magnetic conductive casing, and the two high-pitch magnetic circuits are disposed in a space surrounded by the first magnetic conductive casing and the magnetic conductive diaphragm and a space surrounded by the second magnetic conductive casing and the magnetic conductive diaphragm, respectively.
Optionally, the first magnetic conductive shell comprises a top wall and a first side wall extending from the top wall, the second magnetic conductive shell comprises a bottom wall and a second side wall extending from the bottom wall, and the bottom wall is fixed with the bass unit; in the two high-pitch magnetic circuits, a first magnetic steel of one high-pitch magnetic circuit is arranged on the top wall and forms a first gap with the first side wall, a first magnetic steel of the other high-pitch magnetic circuit is arranged on the bottom wall and forms a second gap with the second side wall, and the two coils are respectively arranged in the first gap and the second gap.
Optionally, a high-pitch sound outlet is formed in the top wall.
Optionally, the bass magnetic circuit system includes a magnetic yoke, the bass enclosure includes a middle shell and a mounting cover fixed to each other, the bottom wall is fixed to the magnetic yoke, the bass magnetic circuit system is fixed to the middle shell, and the bass diaphragm is fixed to the mounting cover.
Optionally, first magnet steel be formed with the high pitch air current passageway of high pitch sound outlet intercommunication, bass magnetic circuit be formed with the bass air current passageway of high pitch air current passageway intercommunication, high pitch air current passageway with bass air current passageway is coaxial setting in proper order.
Optionally, the magnetic yoke is further provided with a bass sound outlet communicated with the bass magnetic gap.
Optionally, the bass unit further includes a centering branch, and the centering branch is fixed to the bass diaphragm and the bass housing, respectively.
Optionally, the bass unit further includes a passive radiation film located between the bass diaphragm and the bass housing, and the passive radiation film is disposed corresponding to the bass diaphragm.
Furthermore, the utility model also provides an earphone, the earphone includes as above sound generating mechanism.
In the utility model, the bass unit comprises a bass vibrating diaphragm, a bass voice coil and a bass magnetic circuit system which are arranged in a bass shell, the bass vibrating diaphragm is connected with the bass voice coil, the bass magnetic circuit system is provided with a bass magnetic gap for inserting the bass voice coil, the high-pitch shell and the bass unit of the high-pitch unit are fixed, the high-frequency and low-frequency performances are considered, the high-pitch unit comprises a magnetic conductive vibrating diaphragm and two high-pitch magnetic circuits which are arranged in the high-pitch shell, the high-pitch magnetic circuit comprises a first magnetic steel which is attached to the high-pitch shell and a coil which is wound around the first magnetic steel, the magnetic conductive vibrating diaphragm is suspended between the two high-pitch magnetic circuits which are arranged at relative intervals, the magnetic conductive vibrating diaphragm is used for vibrating and sounding under the action of an alternating electromagnetic field generated by the high-pitch magnetic circuits, the voice coil connected with the high-pitch vibrating diaphragm is saved, so that only the magnetic conductive vibrating diaphragm vibrates, the high pitch magnetic circuit driven vibrating part quality is little, can promote high frequency performance to can improve acoustoelectric conversion efficiency, the utility model discloses a wind first magnet steel setting with the coil, make the central zone of magnetic conduction vibrating diaphragm produce bigger drive power, be favorable to the magnetic conduction vibrating diaphragm to produce the vibration.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a sound generating device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a treble unit of a sound generating apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a treble unit of the sound generating apparatus according to an embodiment of the present invention;
fig. 5 is a schematic view of a disassembled structure of the sound generating device according to an embodiment of the present invention;
fig. 6 is a schematic view of the sound generating device of fig. 1 at another angle.
Fig. 7 is a schematic view of another disassembled structure of the sound generating device according to an embodiment of the present invention;
fig. 8 is a schematic view illustrating a force analysis of the coil of the high pitch unit of the sound generating apparatus according to an embodiment of the present invention under the condition that the coil is not energized;
fig. 9 is a schematic view illustrating a force analysis of the coil of the high pitch unit according to an embodiment of the present invention.
Examples reference numbers illustrate:
the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The present invention refers to "up" and "down" with reference to the orientation shown in fig. 1, and is only used to explain the relative position relationship between the components in the posture shown in fig. 1, and if the specific posture is changed, the directional indication is correspondingly changed accordingly.
As shown in fig. 1 to 3, the present invention provides a sound generating device 10 including:
the high-pitch unit 30 comprises a high-pitch shell 31, a magnetic conduction vibrating diaphragm 37 and two high-pitch magnetic circuits 33, wherein the magnetic conduction vibrating diaphragm 37 and the two high-pitch magnetic circuits 33 are arranged in the high-pitch shell 31, the high-pitch magnetic circuits 33 comprise first magnetic steel 331 attached to the high-pitch shell 31 and coils 332 arranged around the first magnetic steel 331, the magnetic conduction vibrating diaphragm 37 is suspended between the two high-pitch magnetic circuits 33 arranged at intervals, and the magnetic conduction vibrating diaphragm 37 is used for vibrating and sounding under the action of an alternating electromagnetic field generated by the high-pitch magnetic circuits 33;
The utility model discloses a voice coil loudspeaker voice coil of being connected with magnetic conduction vibrating diaphragm 37 is not set up in high pitch unit 30, and is inequality with the mode of conventional voice coil loudspeaker voice coil drive vibrating diaphragm, and when being located the coil 332 circular telegram of magnetic conduction vibrating diaphragm 37 both sides, two high pitch magnetic circuit 33 interact produce alternating electromagnetic field down, and magnetic conduction vibrating diaphragm 37 is direct under this alternating electromagnetic field's effect, moves along two high pitch magnetic circuit 33's line direction, vibrates the sound production promptly in the vibration space that forms between two high pitch magnetic circuit 33. During the sounding of the treble unit 30, only the magnetically conductive diaphragm 37 moves. Treble unit 30 and bass unit 40 are located same axis, and bass voice coil 43's lower extreme is fixed with bass vibrating diaphragm 42, and bass voice coil 43 suspends in bass magnetic gap 47, and bass voice coil 43 takes place the vibration after the circular telegram to drive bass vibrating diaphragm 42 vibration sound production. The utility model discloses compromise bass, high pitch full frequency channel tone quality, have better listening sense. During the sounding process of the treble unit 30 of the sounding device 10, only the magnetic diaphragm 37 moves, and the coil 332 and the first magnetic steel 331 in the treble magnetic circuit 33 may be stationary. When the coils 332 on the two sides of the magnetic conductive diaphragm 37 are not energized, the magnetic conductive diaphragm 37 is only acted by the magnetic field generated by the first magnetic steels 331 on the two sides, and at this time, the magnetic size, shape size and the like of the two first magnetic steels 331 can be controlled, so that the magnetic conductive diaphragm 373 can be kept still at the preset position in the vibration space.
Compare in setting up the mode of coil 332 in first magnet steel 331 inboard, the utility model discloses a set up coil 332 around first magnet steel 331 for in the magnetic field that high pitch magnetic circuit 33 produced, central zone's permanent magnetic field intensity is bigger than in the regional permanent magnetic field intensity in border, when coil 332 circular telegram, the magnetic field intensity of the alternating magnetic field that the central zone of magnetic conduction vibrating diaphragm 37 was experienced is greater than the magnetic field intensity of the alternating magnetic field that the border region of magnetic conduction vibrating diaphragm 37 received, consequently, the drive power that the central zone of magnetic conduction vibrating diaphragm 37 received is greater than the drive power that the border region of magnetic conduction vibrating diaphragm 37 received, so that magnetic conduction vibrating diaphragm 37 more easily receives alternating electromagnetic field effect and sound production vibration. In one embodiment, the first magnetic steel 331, the coil 332 and the magnetically conductive diaphragm 37 are coaxially disposed to facilitate vibration balance.
In the utility model, the high pitch magnetic circuit system 33 is arranged on the two sides of the magnetic conduction vibrating diaphragm 37, so that the power-on condition of the coil 332 can be controlled, the high pitch magnetic circuit system 33 generates an alternating electromagnetic field, the magnetic conduction vibrating diaphragm 37 can vibrate in a vibration space under the action of the alternating electromagnetic field, a voice coil connected with the vibrating diaphragm is omitted, only the magnetic conduction vibrating diaphragm 37 vibrates, the quality of a vibration part to be driven by the high pitch magnetic circuit system 33 is small, the high-frequency performance can be improved, and the sound-electricity conversion efficiency can be improved; the utility model discloses a set up coil 332 around first magnet steel 331 for the drive power that the central zone of magnetic conduction vibrating diaphragm 37 produced is bigger, is favorable to magnetic conduction vibrating diaphragm 37 to produce the vibration.
Optionally, the first magnetic steels 331 of the two treble magnetic circuits 33 are magnetized in the same direction, and the current directions of the coils 332 of the two treble magnetic circuits 33 are opposite. Under the condition that the coil 332 is not electrified, the magnetic force directions of the two first magnetic steels 331 applied to the magnetic conductive diaphragm 37 are opposite, so that the magnetic conductive diaphragm 37 can be suspended between the two first magnetic steels 331 in a balanced manner. When the current directions of the upper and lower coils 332 of the magnetic conductive diaphragm 37 are opposite, the coil 332 generates an alternating electromagnetic field, and the magnetic conductive diaphragm 37 vibrates in the upper and lower directions under the action of the alternating electromagnetic field, so that the magnetic conductive diaphragm 37 can be controlled to vibrate and sound by controlling the current in the coil 332.
Referring to fig. 8 and 9, fig. 8 is a force analysis diagram of the magnetically conductive diaphragm 37 in an embodiment when the coil 332 is not energized; fig. 9 is a force analysis diagram of the magnetically conductive diaphragm 37 in an embodiment when the coil 332 is energized. In the embodiment shown in fig. 8, the first magnetic steel 331 located above the magnetic conductive diaphragm 37 and the first magnetic steel 331 located below the magnetic conductive diaphragm 37 are both N-pole at the upper end and S-pole at the lower end, that is, the magnetizing directions of the first magnetic steel 331 are the same, the direction shown by the magnetic induction line comes out from the N-pole and enters the S-pole, and meanwhile, the magnetic conductive diaphragm 37 has magnetic conductivity, so that the magnetic induction line is in the direction shown by the arrow in the drawing. Because the magnetic force directions of the two first magnetic steels 331 received by the magnetic conductive diaphragm 37 are opposite, the magnetic conductive diaphragm 37 can be suspended between the two first magnetic steels 331 in a balanced manner.
In the embodiment shown in fig. 9, the first magnetic steel 331 located above the magnetic conductive diaphragm 37 and the first magnetic steel 331 located below the magnetic conductive diaphragm 37 are both N-pole at the upper end and S-pole at the lower end, the current directions of the coils 332 located outside the upper first magnetic steel 331 are left-side and right-side, and the current directions of the coils 332 located outside the lower first magnetic steel 331 are right-side and left-side, that is, the current directions of the two coils 332 are opposite. According to the ampere rule, it is determined that the upper end of the coil 332 above the magnetic conductive diaphragm 37 is an S-pole, the lower end is an N-stage, and the upper end of the coil 332 below the magnetic conductive diaphragm 37 is an N-pole, and the lower end is an S-stage.
The two opposite sides of the magnetic conductive diaphragm 37 are magnetized by the upper first magnetic steel 331 and the lower first magnetic steel 331 to generate polarity, the upper side of the magnetic conductive diaphragm 37 is an N pole, and the lower side is an S pole; the lower end of the upper coil 332 is like poles N repelling the magnetic conductive diaphragm 37, and the upper end of the lower coil 332 is like poles N attracting the magnetic conductive diaphragm 37, so that the magnetic conductive diaphragm 37 deforms downward to vibrate under the action of the two superposed forces, thereby further improving the electroacoustic conversion efficiency of the sound generating device 10.
From another point of view, as shown in fig. 8, when the two coils are not energized, the magnetic flux in the magnetic conductive diaphragm is Φ a ═ Φg1+Φg2＝Φg+(-Φg) 0 is approximately distributed; wherein phi isg1Magnetic flux, phi, generated by the upper first magnet 331g1Is defined as the positive direction, phig2The magnetic flux generated by the lower first magnetic steel 331 is the same as the magnetic flux generated by the upper first magnetic steel 331 in magnitude and opposite in direction, and the direction is negative.
As shown in fig. 9, when the two coils are energized with reverse currents, the magnetic flux of the magnetic conductive diaphragm 37, which is received by the upper treble magnetic circuit 33, is: phi is a1＝φg1+φi1＝φg+(-φi) Wherein, aboveThe direction of the magnetic flux generated by the current in the coil 332 is opposite to the direction of the magnetic flux generated by the first magnetic steel 331 above, and is a negative direction.
The magnetic flux of the magnetic conductive diaphragm 37, which is subjected to the lower treble magnetic circuit 33, is: phi is a2＝φg2+φi2＝(- φg)+(-φi) The direction of the magnetic flux generated by the current of the lower coil 332 is the same as the direction of the magnetic flux generated by the lower first magnetic steel 331, and is a negative direction.
Therefore, the magnetic conductive diaphragm 37 receives the magnetic flux φ of the upper high-pitch magnetic circuit system 331The magnetic flux phi of the lower high-pitch magnetic circuit system 33 is applied to the magnetically permeable diaphragm 372。
When the two coils 332 are supplied with reverse current, Φ a' becomes equal to Φ1+φ2＝φg+(-φi)+(- φg)+(-φi)＝-2φiIf the conducting state is the last state and the conducting potential is the initial state, the amount of change of the magnetic flux in the magnetically permeable diaphragm 37 is: delta phi is phi A' -phi A is-2 phii-0＝-2φi. The electromagnetic force F phi received by the magnetic conductive diaphragm 37 is proportional to the rate of change of magnetic flux, i.e., F phi and Δ phi/[ delta ] t are-2 phii/. DELTA.t is proportional.
In the embodiment shown in fig. 9, the electromagnetic force F phi pushes the magnetically permeable diaphragm 37 to move closer to the lower treble magnetic circuit system 33. Similarly, when the current direction of the coil 332 above and below the magnetic conductive diaphragm 37 is opposite to that shown in fig. 9, the magnetic flux Φ of the upper treble magnetic circuit 33 received by the magnetic conductive diaphragm 37 is known through the derivation process1' > magnetic flux phi of the magnetic conductive diaphragm 37 subjected to the lower high-pitch magnetic circuit system 332', and the electromagnetic force F phi' received by the permeable diaphragm 37 is proportional to the rate of change of the magnetic flux, i.e., F phi 'and Δ phi'/[ delta ] t are 2 phii/. DELTA.t is proportional. The electromagnetic force generated by the treble magnetic circuit system 33 pushes the magnetic conductive diaphragm 37 to move toward the upper treble magnetic circuit system 33, so that the magnetic conductive diaphragm 37 can be controlled to vibrate and generate sound by controlling the current in the coil 332.
The high pitch shell 31 includes a first magnetic conduction shell 311 and a second magnetic conduction shell 312 which are spliced with each other, the second magnetic conduction shell 312 is fixed with the bass unit 40, the magnetic conduction vibrating diaphragm 37 is arranged between the first magnetic conduction shell 311 and the second magnetic conduction shell 312, the two high pitch magnetic circuits 33 are respectively arranged in a space surrounded by the first magnetic conduction shell 311 and the magnetic conduction vibrating diaphragm 37 and a space surrounded by the second magnetic conduction shell 312 and the magnetic conduction vibrating diaphragm 37, and the bottom of the second magnetic conduction shell 312 is attached to the bass unit 40.
The first magnetic conductive shell 311 includes a top wall 3111 and a first side wall 3112 extending from the top wall 3111, the second magnetic conductive shell 312 includes a bottom wall 3121 and a second side wall 3122 extending from the bottom wall 3121, and the bottom wall 3121 is fixed with the bass unit 40; the first magnetic steel 331 of one high-pitch magnetic circuit 33 of the two high-pitch magnetic circuits 33 is disposed on the top wall 3111 and forms a first gap with the first side wall 3112, the first magnetic steel 331 of the other magnetic circuit is disposed on the bottom wall 3121 and forms a second gap with the second side wall 3122, and the two coils 332 are disposed in the first gap and the second gap, respectively. Specifically, the first magnetic conductive shell 311 includes a top wall 3111 and a first side wall 3112 extending from the top wall 3111, and the second magnetic conductive shell 312 includes a bottom wall 3121 and a second side wall 3122 extending from the bottom wall 3121; the first magnetic steel 331 of one high-pitch magnetic circuit 33 of the two high-pitch magnetic circuits 33 is disposed on the top wall 3111 and forms a first gap with the first side wall 3112, the first magnetic steel 331 of the other high-pitch magnetic circuit 33 is disposed on the bottom wall 3121 and forms a second gap with the second side wall 3122, and the two coils 332 are disposed in the first gap and the second gap, respectively. That is, from the outside to the inside, the first side wall 3112, the coil 332 and the first magnetic steel 331 are sequentially sleeved, and the second side wall 3122, the other coil 332 and the other first magnetic steel 331 are sequentially sleeved. The first magnetic steel 331 can be directly attached to the top wall 3111 or the bottom wall 3121, and the coil 332 can be wound around the first magnetic steel 331, or can be wound in advance and then attached to the top wall 3111 or the bottom wall 3121. The components of the treble magnetic circuit 33 are sequentially sleeved, so that the size of the treble unit 30 of the sound generating apparatus 10 is effectively reduced. The first side wall 3112 and the second side wall 3122 fix the magnetic conduction vibrating diaphragm 37 from the opposite sides of the magnetic conduction vibrating diaphragm 37, that is, the edge of the magnetic conduction vibrating diaphragm 37 can be fixed at the end of the first side wall 3112 or the second side wall 3122 by gluing, welding, and the first magnetic conduction shell 311 and the second magnetic conduction shell 312 are fixed in a matching manner, so that the product assembly is facilitated. Meanwhile, the magnetic conduction vibrating diaphragm 37 is directly fixed through the first magnetic conduction shell 311 and the second magnetic conduction shell 312, so that other fixing parts are not arranged between the magnetic conduction vibrating diaphragm 37 and the high-pitch magnetic circuit system 33, the magnetic field distribution between the magnetic conduction vibrating diaphragm 37 and the high-pitch magnetic circuit system 33 is not influenced by other fixing parts, and the sound-electricity conversion efficiency is favorably improved.
As shown in fig. 1, 5 and 6, the first magnetic steel has a high-pitched air flow channel 35 opened toward the magnetic conductive diaphragm 37, and the top wall 3111 has a high-pitched sound outlet 36 communicated with the high-pitched air flow channel 35. By forming the treble sound outlet hole 36, the magnetic conductive diaphragm 37 is advantageously vibrated in the treble housing 31, and the air flow pushed by the magnetic conductive diaphragm 37 can be transmitted to the outside through the treble air flow passage 35 and the treble sound outlet hole 36.
As shown in fig. 3 and 4, the treble magnetic circuit 33 further includes a sound-transmitting magnetic conductor 333 disposed in the treble airflow passage 35, and a plurality of pore structures are distributed in the sound-transmitting magnetic conductor 333. The sound conduction magnetizer 333 is a magnetic conduction member, so that the magnetic conductivity of the high-pitch magnetic circuit system 33 can be increased, and due to the distribution of the pore structure, the air in the high-pitch shell 31 can be communicated with the outside through the pore structure, and the air flow pushed by the magnetic conduction vibrating diaphragm 37 can still be transmitted to the outside through the pore structure. In this embodiment, the first magnetic steel 331 and the sound transmission magnetizer 333 are separately installed, and the sound transmission magnetizer 333 may be foam iron nickel. In other embodiments, the first magnetic steel 331 and the sound-transmitting magnetizer 333 may be integrally formed.
The magnetic conductive diaphragm 37 of this embodiment is a planar magnetic conductive diaphragm 37. Compared with the prior art diaphragm with the corrugated structure, the planar magnetic diaphragm 37 provided in this embodiment can reduce the size of the sound generating apparatus 10. Specifically, the magnetically conductive diaphragm 37 includes a metal body including one or more of stainless steel S430, silicon steel, SPCC, iron-nickel alloy, iron-cobalt-vanadium alloy, and soft magnetic ferrite. Compared with a vibrating diaphragm made of rubber or paper, when the metal main body vibrates, the emitted tone quality has metal texture. The magnetic diaphragm 37 may further include a damping layer disposed on the metal main body, and the damping layer may be a glue film layer, PEEK, TPU, TPEE, or the like. The damping of the magnetic diaphragm 37 can be adjusted by the damping layer, which is beneficial to the balance of the vibration of the magnetic diaphragm 37 and brings more delicate listening feeling. In another embodiment, the magnetic conductive diaphragm 37 includes a substrate and a magnetic conductive layer disposed on the substrate, where the substrate is any one of metal or nonmetal, elastomer or non-elastomer, and the magnetic conductive layer is made of powder with soft magnetic properties such as nickel, iron-nickel alloy, iron-phosphorus alloy, and is disposed on the substrate by plating, deposition, magnetron sputtering, and the like.
In one embodiment, the bass magnetic circuit system 41 includes a yoke 491, the bass housing 49 includes a middle shell 22 and a mounting cover 23 fixed to each other, the bottom wall 3121 is fixed to the yoke 491, the bass magnetic circuit system 41 is fixed to the middle shell 22, the bass diaphragm 42 is fixed to the mounting cover 23, the yoke 491 is used for fixing the treble unit 30 and the bass unit 40, during assembly, the treble unit 30 and the bass unit 40 are assembled separately, and finally the second magnetic guiding shell 312 of the treble unit 30 is attached to the yoke 491.
As shown in fig. 1 and 6, the bass magnetic circuit 41 is formed with a bass air flow passage 45 communicating with the treble air flow passage 35, and the treble air flow passage 35 and the bass air flow passage 45 are coaxially arranged in this order. First air vent 415 is opened on the diapire 3121, first air vent 415 is corresponding with high pitch sound outlet 36, when bass diaphragm 42 vibrates, the gaseous accessible in the bass casing 49 gets into high pitch airflow channel 35 from low pitch airflow channel 45 and discharges outside sound generating mechanism 10 through first air vent 415, is favorable to keeping the atmospheric pressure balance in high pitch unit 30 and the bass unit 40, avoids the inside atmospheric pressure of high pitch unit 30 and bass unit 40 too big, prevents to influence the performance of high pitch unit 30 and bass unit 40. In an embodiment, the bass magnetic circuit system 41 further includes a second magnetic steel 411 and a third magnetic steel 412 disposed at an interval, the bass airflow channel 45 is opened on the second magnetic steel 411, the third magnetic steel 412 circumferentially surrounds the second magnetic steel 411, the second magnetic steel 411 and the magnetic yoke 491 are fixed on a side deviating from the treble housing 31, and the third magnetic steel 412 is fixed with the magnetic yoke 491 and the middle housing 22 respectively. Bass magnetic circuit 41 may further include a first washer 413 and a second washer 414, where the first washer 413 is matched with the second magnetic steel 411 in shape and is attached to one side of the second magnetic steel 411 departing from the yoke 419, the second washer 414 is matched with the third magnetic steel 412 in shape and is attached to one side of the third magnetic steel 412 departing from the yoke 419, a bass magnetic gap 47 is formed between the second magnetic steel 411 and the third magnetic steel 412, and the magnetic flux of the bass magnetic circuit is further improved by the first washer 413 and the second washer 414.
The yoke 419 is further provided with a bass sound outlet 212 communicating with the bass magnetic gap 47. The bass sound outlet 212 is provided corresponding to the bass magnetic gap 47. The treble unit 30 faces the whole earphone sound outlet direction, the sound outlet path of the bass unit 40 flows out from the bass sound outlet holes 212 through the bass magnetic gap 47, and the number of the bass sound outlet holes 212 can be multiple, so as to further improve the low-frequency performance of the bass unit 40.
As shown in fig. 7, the bass unit 40 further includes a centering pad 48, and the centering pad 48 is fixed to the bass diaphragm 42 and the bass housing 49, respectively. The centering support 48 may be fixed at one end of the bass voice coil 43 away from the bass diaphragm 42 and at the other end to the middle housing 22, so as to ensure the linear balance of the bass vibration state and suppress the polarization.
Optionally, the bass unit 40 further includes a passive radiation film 46 located between the bass diaphragm 42 and the bass housing 49, and the passive radiation film 46 is disposed corresponding to the bass diaphragm 42. In one embodiment, the mounting cover 23 includes a bottom cover portion 231 and a side cover portion 232 circumferentially surrounding the bottom cover portion 231, the bass unit 40 further includes a passive radiation film 46 located between the bass diaphragm 42 and the bottom cover portion 231, the passive radiation film 46 is disposed corresponding to the bass diaphragm 42, and an edge of the passive radiation film 46 is fixed on the side cover portion 232. The bottom cover 231 and the magnetic conductive diaphragm 37 are arranged in a back-to-back manner, and the bottom cover 231 has the functions of protection, dust prevention and the like. Passive radiation membrane 46 sets up with bass vibrating diaphragm 42 and bottom 231 interval respectively, and when bass vibrating diaphragm 42 vibrated, bass vibrating diaphragm 42 was located the atmospheric pressure of producing between passive radiation membrane 46 and was compressed or expanded, and under the effect that atmospheric pressure changed, passive radiation membrane 46 produced the vibration, and the diffusion of the low frequency signal of being convenient for can promote the volume of bass and feel, can also reduce resonant frequency, can effectively promote sound generating mechanism 10's low frequency performance. The bottom cover 231 can protect the passive radiation membrane 46 to prevent the passive radiation diaphragm from being scratched or collided by accident, and meanwhile, the bottom cover 231 can be provided with a vent hole to dredge the air flow between the passive radiation membrane 46 and the bottom cover 231 in time to ensure the balance of the internal air pressure and the external air pressure. The bottom cover 231 is provided with a second vent hole 2311, when the passive radiating membrane 46 vibrates, the second vent hole 2311 can timely dredge airflow generated between the passive radiating membrane 46 and the bottom cover 231, and the air pressure is prevented from being too high.
The bass diaphragm 42 is fixed on the side cover portion 23 by the fixing ring 44, the edge of the bass diaphragm 42 is fixedly clamped between the side cover portion 23 of the side cover portion 232 and the fixing ring 44, and the fixing ring 44 stably fixes the bass diaphragm 42 on the side cover portion 232, so that the strength of the overall structure of the sound generating apparatus 10 is enhanced. A fitting ear 2323 is formed at an end of the side cover part 232 remote from the base cover part 231, and the fitting ear 2323 can be used to fit the entire sound emitting device to the main body of the earphone.
Furthermore, the utility model also provides an earphone, earphone include sound generating mechanism 10 as above. Since the earphone adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
The above is only the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all of which are in the utility model discloses a conceive, utilize the equivalent structure transform that the content of the specification and the attached drawings did, or directly/indirectly use all to include in other relevant technical fields the patent protection scope of the present invention.
Claims (10)
1. A sound generating device, the sound generating device comprising:
the high-pitch unit comprises a high-pitch shell, a magnetic conduction vibrating diaphragm and two high-pitch magnetic circuits, wherein the magnetic conduction vibrating diaphragm and the two high-pitch magnetic circuits are arranged in the high-pitch shell;
bass unit, bass unit includes the bass casing and locates bass vibrating diaphragm, bass voice coil loudspeaker voice coil and bass magnetic circuit in the bass casing, bass unit with the high pitch casing is fixed, the bass vibrating diaphragm with the bass voice coil loudspeaker voice coil is connected, bass magnetic circuit is formed with the confession bass voice coil loudspeaker voice coil male bass magnetic gap.
2. The sound-generating apparatus as claimed in claim 1, wherein the treble housing includes a first magnetic conductive shell and a second magnetic conductive shell which are spliced together, the second magnetic conductive shell is fixed to the bass unit, the magnetic conductive diaphragm is disposed between the first magnetic conductive shell and the second magnetic conductive shell, and the two treble magnetic circuits are disposed in a space surrounded by the first magnetic conductive shell and the magnetic conductive diaphragm and a space surrounded by the second magnetic conductive shell and the magnetic conductive diaphragm, respectively.
3. The sound generating apparatus of claim 2 wherein said first magnetically permeable housing comprises a top wall and a first side wall extending from said top wall, said second magnetically permeable housing comprises a bottom wall and a second side wall extending from said bottom wall, said bottom wall being fixed to said bass unit; in the two high-pitch magnetic circuits, a first magnetic steel of one high-pitch magnetic circuit is arranged on the top wall and forms a first gap with the first side wall, a first magnetic steel of the other high-pitch magnetic circuit is arranged on the bottom wall and forms a second gap with the second side wall, and the two coils are respectively arranged in the first gap and the second gap.
4. The sound generating apparatus as claimed in claim 3, wherein said top wall is formed with a high pitch sound outlet.
5. The sound generating apparatus as claimed in claim 4, wherein the bass magnetic circuit system comprises a magnetic yoke, the bass enclosure comprises a middle shell and a mounting cover fixed to each other, the bottom wall is fixed to the magnetic yoke, the bass magnetic circuit system is fixed to the middle shell, and the bass diaphragm is fixed to the mounting cover.
6. The sound generating apparatus as claimed in claim 5, wherein said first magnetic steel is formed with a treble air flow passage communicating with said treble sound outlet hole, said bass magnetic circuit system is formed with a bass air flow passage communicating with said treble air flow passage, and said treble air flow passage and said bass air flow passage are coaxially arranged in this order.
7. The sound generating apparatus as claimed in claim 5, wherein said yoke further defines a bass sound outlet communicating with said bass magnetic gap.
8. The sound generating apparatus as claimed in any one of claims 1 to 7, wherein the bass unit further comprises a centering branch, and the centering branch is fixed to the bass diaphragm and the bass housing, respectively.
9. The sound production device as claimed in any one of claims 1 to 7, wherein the bass unit further includes a passive radiation film located between the bass diaphragm and the bass housing, the passive radiation film being disposed in correspondence with the bass diaphragm.
10. A headset characterized in that it comprises a sound-emitting device according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120300919.8U CN214381369U (en) | 2021-02-02 | 2021-02-02 | Sound production device and earphone |
| PCT/CN2021/136392 WO2022166388A1 (en) | 2021-02-02 | 2021-12-08 | Sound producing device and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120300919.8U CN214381369U (en) | 2021-02-02 | 2021-02-02 | Sound production device and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214381369U true CN214381369U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120300919.8U Active CN214381369U (en) | 2021-02-02 | 2021-02-02 | Sound production device and earphone |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN214381369U (en) |
| WO (1) | WO2022166388A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166388A1 (en) * | 2021-02-02 | 2022-08-11 | 歌尔股份有限公司 | Sound producing device and earphone |
| WO2022166376A1 (en) * | 2021-02-02 | 2022-08-11 | 歌尔股份有限公司 | Sound producing unit |
| WO2024000691A1 (en) * | 2022-06-30 | 2024-01-04 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker box |
| WO2024045238A1 (en) * | 2022-08-30 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Vibration sound production apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117499836B (en) * | 2024-01-03 | 2024-03-15 | 成都水月雨科技有限公司 | Multi-moving-coil combined earphone and signal processing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150373435A1 (en) * | 2014-06-19 | 2015-12-24 | Huiyang Dongmei Audio Products Co., Ltd. | Coaxial audio speaker using single audio source |
| CN108449700A (en) * | 2018-06-14 | 2018-08-24 | 深圳市蓝禾技术有限公司 | The earphone of loud speaker and the application loud speaker |
| CN209787376U (en) * | 2019-07-09 | 2019-12-13 | 深圳市华韵鑫电子有限公司 | Magnetic induction earphone loudspeaker and earphone |
| CN112243183B (en) * | 2019-07-19 | 2023-08-04 | 歌尔股份有限公司 | Magnetic potential loudspeaker and electronic equipment thereof |
| CN214381369U (en) * | 2021-02-02 | 2021-10-08 | 歌尔股份有限公司 | Sound production device and earphone |
| CN112770237B (en) * | 2021-02-02 | 2023-01-24 | 歌尔股份有限公司 | Sound monomer |
| CN112770233A (en) * | 2021-02-02 | 2021-05-07 | 歌尔股份有限公司 | Sound monomer |
| CN112770234A (en) * | 2021-02-02 | 2021-05-07 | 歌尔股份有限公司 | Sound monomer |
| CN113055795B (en) * | 2021-02-02 | 2023-04-07 | 歌尔股份有限公司 | Sound production device and earphone |
| CN214481241U (en) * | 2021-02-02 | 2021-10-22 | 歌尔股份有限公司 | Sound monomer |
-
2021
- 2021-02-02 CN CN202120300919.8U patent/CN214381369U/en active Active
- 2021-12-08 WO PCT/CN2021/136392 patent/WO2022166388A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166388A1 (en) * | 2021-02-02 | 2022-08-11 | 歌尔股份有限公司 | Sound producing device and earphone |
| WO2022166376A1 (en) * | 2021-02-02 | 2022-08-11 | 歌尔股份有限公司 | Sound producing unit |
| WO2024000691A1 (en) * | 2022-06-30 | 2024-01-04 | 瑞声光电科技(常州)有限公司 | Coaxial loudspeaker box |
| WO2024045238A1 (en) * | 2022-08-30 | 2024-03-07 | 瑞声光电科技(常州)有限公司 | Vibration sound production apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022166388A1 (en) | 2022-08-11 |
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