WO2020228341A1 - 发声器件 - Google Patents

发声器件 Download PDF

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Publication number
WO2020228341A1
WO2020228341A1 PCT/CN2019/129411 CN2019129411W WO2020228341A1 WO 2020228341 A1 WO2020228341 A1 WO 2020228341A1 CN 2019129411 W CN2019129411 W CN 2019129411W WO 2020228341 A1 WO2020228341 A1 WO 2020228341A1
Authority
WO
WIPO (PCT)
Prior art keywords
diaphragm
ring
magnetic
lower cover
upper cover
Prior art date
Application number
PCT/CN2019/129411
Other languages
English (en)
French (fr)
Inventor
宋威
张帆
金鑫
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2020228341A1 publication Critical patent/WO2020228341A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
    • H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
    • 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
    • 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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to an electro-acoustic device, in particular to a sound-producing device applied to portable electronic products.
  • the related art sounding device includes a basin frame, a vibration system installed on the basin frame, and a magnetic circuit system with a magnetic gap.
  • the vibration system includes a diaphragm, an annular dome, a skeleton and a voice coil, and the annular dome is connected to the diaphragm,
  • the voice coil is connected with the ring-shaped dome in its vibration direction to drive the diaphragm to vibrate and produce sound; the voice coil is inserted into the magnetic gap to drive the diaphragm to produce sound, and the diaphragm and the magnetic circuit system are arranged directly opposite.
  • the structure of the existing sounding device adopts a single diaphragm design method, which often results in unbalanced vibration of the vibration system, and there are more noises.
  • the diaphragm and the magnetic circuit system are arranged directly opposite to make the magnetic circuit system in The height of the diaphragm in the vibration direction is limited, and the magnetic circuit cannot be maximized, thereby affecting the poor acoustic performance of the sound generating device.
  • the purpose of the present invention is to provide a sounding device with high space utilization, maximum magnetic circuit and excellent acoustic performance.
  • the present invention provides a sound generating device, which includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap
  • the basin frame includes a lower cover for accommodating the magnetic circuit system and an upper cover covering the lower cover;
  • the vibration system includes a ring-shaped diaphragm, inserted in the magnetic gap to drive A voice coil that vibrates and emits sound by the diaphragm and a skeleton respectively connecting the diaphragm and the voice coil;
  • the diaphragm includes a first annular diaphragm, a second annular diaphragm, and an annular dome, the first annular The outer side of the diaphragm is connected with the lower cover, the inner side of the first ring-shaped diaphragm is connected with the outer side of the ring dome, the outer side of the second ring-shaped diaphragm is connected with the inner side of the ring
  • the upper cover has a ring shape
  • the lower cover has a ring shape
  • the upper cover and the lower cover jointly enclose a receiving space and a ring-shaped sound cavity surrounding the receiving space.
  • the membrane is located in the sound cavity, and the magnetic circuit system is contained in the containing space.
  • the magnetic circuit system includes a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, and auxiliary magnetic steels that surround the main magnetic steel and are spaced apart to form the magnetic gap ,
  • the auxiliary magnetic steel is provided with a avoidance gap, and the skeleton passes through the avoidance gap and extends into the magnetic gap to be connected with the voice coil.
  • the upper cover includes an upper cover bottom wall, an upper cover outer wall bent and extended from an outer peripheral side of the upper cover bottom wall, and an upper cover inner wall bent and extended from an inner peripheral side of the upper cover bottom wall;
  • the lower cover includes a lower cover bottom wall, a lower cover outer wall bent and extended from the outer peripheral side of the lower cover bottom wall, and a lower cover inner wall bent and extended from the inner peripheral side of the lower cover bottom wall;
  • the outer wall of the cover abuts against the outer wall of the lower cover, the outer side of the first annular diaphragm abuts against the inner wall of the lower cover, the inner side of the second ring diaphragm abuts against the inner wall of the upper cover, and the inner wall of the lower cover
  • a relief hole is provided, and the skeleton sequentially passes through the relief hole and the relief gap and extends into the magnetic gap and is connected with the voice coil.
  • the present invention provides a sound-producing device, which includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap;
  • the basin frame It includes a lower cover for accommodating the magnetic circuit system and an upper cover fixed to the magnetic circuit system;
  • the vibration system includes a ring-shaped diaphragm that is inserted into the magnetic gap to drive the diaphragm to vibrate A voice coil that emits sound and a skeleton respectively connecting the diaphragm and the voice coil;
  • the diaphragm includes a first annular diaphragm, a second annular diaphragm and an annular dome, and the outer side of the first annular diaphragm is connected to The lower cover is connected, the inner side of the first ring diaphragm is connected with the outer side of the ring dome, the outer side of the second ring diaphragm is connected with the inner side of the ring
  • the magnetic circuit system includes a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, and auxiliary magnetic steels that surround the main magnetic steel and are spaced apart to form the magnetic gap.
  • the present invention provides a sound-producing device, which includes a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap;
  • the basin frame It includes a lower cover for accommodating the magnetic circuit system;
  • the vibration system includes a ring-shaped diaphragm, a voice coil inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound, and respectively connect the diaphragm And the frame of the voice coil;
  • the diaphragm includes a first ring-shaped diaphragm, a second ring-shaped diaphragm and a ring-shaped dome, the outer side of the first ring-shaped diaphragm is connected with the lower cover, the first ring-shaped diaphragm
  • the inner side of the diaphragm is connected with the outer side of the annular dome, the outer side of the second annular diaphragm is connected with the inner side
  • the magnetic circuit system includes a magnetic conductive plate fixed to the lower cover, a main magnetic steel fixed to the magnetic conductive plate, and auxiliary magnetic steels that surround the main magnetic steel and are spaced apart to form the magnetic gap ,
  • the auxiliary magnetic steel is provided with a avoidance gap, and the skeleton passes through the avoidance gap and extends into the magnetic gap to be connected with the voice coil.
  • the basin frame further includes an upper cover disposed opposite to the lower cover
  • the magnetic circuit system further includes both fixed to the main magnet and the auxiliary magnet and disposed opposite to the magnetic conductive plate
  • the pole core is fixed to the upper cover.
  • the inner side of the second annular diaphragm is sandwiched between the secondary magnetic steel and the pole core.
  • the basin frame further includes an upper cover covering the lower cover, the upper cover and the lower cover jointly enclose an accommodation space, the magnetic circuit system is accommodated in the accommodation space, and the diaphragm and The upper cover jointly encloses a front cavity.
  • the upper cover has a ring shape
  • the lower cover has a ring shape
  • the upper cover and the lower cover jointly enclose the receiving space and a ring-shaped sound cavity surrounding the receiving space, so The diaphragm is located in the sound cavity.
  • the two skeletons respectively extend from two opposite sides of the voice coil to connect to the annular dome.
  • each of the frames includes a first extension part, a second extension part and a third extension part, the first extension part is arranged at intervals beside the voice coil, and the second extension part and the The third extension part is connected to the outer side wall of the voice coil from both ends of the first extension part in a direction perpendicular to the vibration direction of the voice coil, and the first extension part is connected to the annular dome.
  • the sound generating device of the present invention is equipped with a double-diaphragm structure in which the vibration system includes a first ring-shaped diaphragm and a second ring-shaped diaphragm, which can make the vibration of the vibration system more balanced and effectively reduce the vibration caused by unbalanced vibration.
  • the noise effectively improves the sound quality.
  • the three sounding devices of the present invention are structurally connected to the lower cover with the outer side of the first ring diaphragm, and the upper cover or the magnetic circuit system is connected to the inner side of the second ring diaphragm, and the magnetic circuit system is fixed to the lower cover and located in the The inner side of the second ring diaphragm is connected to the lower cover or the upper cover to the magnetic circuit system through the upper cover, respectively.
  • the above-mentioned different structures make the height of the magnetic circuit system in the vibration direction of the vibration system unaffected by the vibration system, and the magnetic circuit system has a high space utilization rate, thereby maximizing the magnetic circuit and making the acoustic performance of the sound generating device excellent.
  • FIG. 1 is a schematic diagram of the three-dimensional structure of the first embodiment of the sound generating device of the present invention
  • FIG. 2 is an exploded view of a partial three-dimensional structure of the first embodiment of the sound generating device of the present invention
  • Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
  • FIG. 4 is a schematic diagram of the three-dimensional structure of the upper cover of the first embodiment of the sound generating device of the present invention.
  • FIG. 5 is an exploded view of a part of the three-dimensional structure of the vibration system of the first embodiment of the sound generating device of the present invention.
  • FIG. 6 is an exploded view of a partial three-dimensional structure of the vibration system of the first embodiment of the sound device of the present invention from another angle;
  • FIG. 7 is an exploded view of a partial three-dimensional structure of the magnetic circuit system of the first embodiment of the sound generating device of the present invention.
  • Fig. 8 is a partial three-dimensional structure assembly diagram of part of the magnetic circuit system, voice coil and skeleton of the first embodiment of the sound device of the present invention
  • FIG. 9 is a cross-sectional view of the second embodiment of the sound generating device of the present invention.
  • FIG. 10 is a cross-sectional view of the third embodiment of the sound generating device of the present invention.
  • Fig. 11 is a cross-sectional view of the fourth embodiment of the sound generating device of the present invention.
  • the present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3. Wherein, the magnetic circuit system 3 has a magnetic gap 30.
  • the basin frame 1 includes a lower cover 12 for accommodating the magnetic circuit system 3 and an upper cover 11 covering the lower cover 12.
  • the upper cover 11 includes an upper cover bottom wall 111, an upper cover outer wall 112 bent and extended from the outer peripheral side of the upper cover bottom wall 111, and an upper cover bent and extended from the inner peripheral side of the upper cover bottom wall 111 The inner wall 113 and the sound hole 110 passing therethrough.
  • the lower cover 12 includes a lower cover bottom wall 121, a lower cover outer wall 122 bent and extended from the outer peripheral side of the lower cover bottom wall 121, and a lower cover bent and extended from the inner peripheral side of the lower cover bottom wall 121 ⁇ 123.
  • the sound hole 110 is opened on the outer wall 112 of the upper cover.
  • the outer wall 112 of the upper cover abuts the outer wall 122 of the lower cover.
  • the upper cover 11 has a ring shape.
  • the lower cover 12 has a ring shape.
  • the upper cover 11 and the lower cover 12 jointly enclose a receiving space 10 and a ring-shaped sounding cavity 20 surrounding the receiving space 10.
  • the vibration system 2 is fixed to the basin frame 1.
  • the vibration system 2 includes a diaphragm 21 fixed to the basin frame 1, a voice coil 22 inserted into the magnetic gap 30 to drive the diaphragm 21 to vibrate and produce sound, and fixed to the diaphragm 21 and the sound coil respectively.
  • the diaphragm 21 is located in the sound cavity 20. Specifically, the diaphragm 21 includes a first annular diaphragm 211, a second annular diaphragm 212, and an annular dome 213.
  • the outer side of the first annular diaphragm 211 is connected to the lower cover 12. Specifically, the outer side of the first annular diaphragm 211 abuts against the inner wall 123 of the lower cover.
  • the inner side of the first annular diaphragm 211 is connected to the outer side of the annular dome 213.
  • the outer side of the second annular diaphragm 212 is connected to the inner side of the annular dome 213.
  • the inner side of the second annular diaphragm 212 is connected to the upper cover 11. Specifically, the inner side of the second annular diaphragm 212 abuts against the inner wall 113 of the upper cover. That is, the diaphragm 21 and the upper cover 11 jointly enclose the front cavity 101.
  • the sound hole 110 connects the front cavity 101 with the outside.
  • the first ring-shaped diaphragm 211, the second ring-shaped diaphragm 212, the ring-shaped dome 213, the upper cover 11, and the lower cover 12 as a whole can be enclosed to form the receiving space 10, so that the The containing space 10 is a sealed space to ensure airtightness.
  • This structure facilitates production and assembly.
  • the vibration system 2 is provided with a dual-diaphragm structure of the first ring-shaped diaphragm 211 and the second ring-shaped diaphragm 212, which can make the vibration of the vibration system 2 more balanced and effectively reduce the occurrence of unbalanced vibrations.
  • the noise effectively improves the sound quality.
  • the first annular diaphragm 211 includes a first folding ring 2111, a first fixing portion 2112 located inside the first folding ring 2111, and a second fixing portion 2113 located outside the first folding ring 2111,
  • the first fixing portion 2112 is connected to the outer side of the annular dome 213, and the second fixing portion 2113 is connected to the inner wall 123 of the lower cover;
  • the second annular diaphragm 212 includes a second folding ring 2121 located at The third fixing portion 2122 inside the second folding ring 2121 and the fourth fixing portion 2123 outside the second folding ring 2121 are connected to the inner wall 113 of the upper cover.
  • the four fixing parts 2123 are connected to the inner side of the annular dome 213.
  • the first folding ring 2111 is an arc-shaped structure with two ends respectively bent and protruding from the first fixing portion 2112 and the second fixing portion 2113 in a direction away from the upper cover 11.
  • the second folding The ring 2121 is an arc-shaped structure in which two ends are respectively bent and protruded from the third fixing portion 2122 and the fourth fixing portion 2123 in a direction away from the upper cover 11.
  • the voice coil 22 is inserted into the magnetic gap 30.
  • the voice coil 22 is used to drive the diaphragm 21 to vibrate and produce sound.
  • One end of the skeleton 23 is connected to the voice coil 22 and the other end is connected to the annular dome 213.
  • the frame 23 is used to connect the voice coil 22 with the annular dome 213. In this way, the voice coil 22 drives the diaphragm 21 to vibrate and produce sound.
  • the frame 23 is not limited to having two, and the frame 23 is provided with one, three, four, or any other number, as long as the voice coil 22 can pass through the frame 23. It is sufficient to drive the first ring-shaped diaphragm 211 and the second ring-shaped diaphragm 212 to vibrate.
  • Each of the skeletons 23 includes a first extension 231, a second extension 232 and a third extension 233.
  • the first extension portions 231 are arranged at intervals beside the voice coil 22.
  • the second extension portion 232 and the third extension portion 233 are respectively connected to the outer side wall of the voice coil 22 from both ends of the first extension portion 231 in a direction perpendicular to the vibration direction of the voice coil 22.
  • the inner wall 123 of the lower cover is provided with a relief hole 1230.
  • Each of the skeletons 23 is connected to the voice coil 22 through the corresponding relief hole 1230.
  • the second extension portion 232 and the third extension portion 233 respectively pass through the corresponding one of the relief holes 1230.
  • the first extension 231 is connected to the annular dome 213.
  • the structure of the skeleton 23 allows the first extension 231 and the annular dome 23 to have a larger connection area.
  • the connection between the frame 23 and the annular dome 213 is more stable. In this way, when the voice coil 22 drives the annular dome 213 through the annular dome 213 to vibrate at high frequency or large amplitude, the The joint between the skeleton 23 and the annular dome 213 is not prone to breakage.
  • the vibration system 2 further includes elastic support components 24 arranged opposite and spaced apart from the diaphragm 21.
  • One end of the elastic support component 24 is fixed to the lower cover 12, and the other end is fixed to the frame 23.
  • the side away from the upper cover 11, the elastic support assembly 24 does not affect the magnetic gap under this structure, and the design of the magnetic circuit system is optimized, so that the acoustic performance of the sound device 100 is better, and the elastic support
  • the arrangement of the component 24 is convenient to improve the stability of the vibration system 2.
  • the elastic support assembly 24 includes two, and each elastic support assembly 24 is connected to a corresponding frame 23.
  • the arrangement of the two elastic supporting components 24 forms a symmetrical structure, the supporting effect of the voice coil 22 is more stable, and the effect of preventing the voice coil 22 from swinging laterally is better.
  • the magnetic circuit system 3 is fixed to the basin frame 1.
  • the magnetic circuit system 3 is accommodated in the containing space 10.
  • the magnetic circuit system 3 will not obstruct the voice coil 22 in the vibration direction of the voice coil 22, and can greatly increase the effective vibration space of the voice coil 22, increase the power of the sound generating device 100, and It is convenient to optimize the design of the sound emitting device 100.
  • the magnetic circuit system 3 includes a magnetic conductive plate 31 fixed to the lower cover 12, a main magnetic steel 32 fixed to the magnetic conductive plate 31, and a magnetic gap 30 that surrounds the main magnetic steel 32 and is spaced apart from each other.
  • the auxiliary magnet 33 is provided with an avoidance gap 330, and the skeleton 23 passes through the avoidance gap 330 and extends into the magnetic gap 30 to connect with the voice coil 22. Specifically, the skeleton 23 sequentially passes through the relief hole 1230 and the relief gap 330 to extend into the magnetic gap 30 and is connected to the voice coil 22.
  • the secondary magnetic steel 33 includes four, and two adjacent secondary magnetic steels 33 form the avoidance gap 330 at intervals. It is understandable that the number of auxiliary magnets 33 is not limited to four. For example, there are two auxiliary magnets 33, and the two auxiliary magnets 33 are respectively arranged on opposite sides of the main magnet 32. The side is also possible.
  • the magnetic conductive plate 31 is fixed to the lower cover 12.
  • the magnetic conductive plate 31 is embedded in the second through hole 120. Due to the limitation of the size of the sound emitting device 100, the distance between the lower cover 12 and the annular dome 213 is limited. By opening the second through hole 120 on the lower cover 12, the magnetic conductive plate 31 is embedded In the through hole 113, the distance between the lower cover 12 and the annular dome 213 occupied by the magnetic conductive plate 31 can be reduced, thereby increasing the effective vibration space of the voice coil 22 and improving the sound emission. The power of the device 100.
  • the present invention provides a sound emitting device 200.
  • the sound emitting device 200 in the second embodiment has basically the same structure of the sound emitting device 100, and different structures and different connection modes are listed below.
  • the sound device 200 includes a basin frame 1a, a vibration system 2a fixed to the basin frame 1a, and a magnetic circuit system 3a that drives the vibration system 2a to vibrate and produce sound.
  • the magnetic circuit system 3 a has a magnetic gap 30.
  • the basin frame 1a includes a lower cover 12a for accommodating the magnetic circuit system 3a and an upper cover 11a fixed to the magnetic circuit system 3a.
  • the vibration system 2a includes a ring-shaped diaphragm 21a, a voice coil 22a inserted in the magnetic gap 30a to drive the diaphragm 21a to vibrate and produce sound, and respectively connect the diaphragm 21a and The frame 23a of the voice coil 22a;
  • the diaphragm 21a includes a first annular diaphragm 211a, a second annular diaphragm 212a, and an annular dome 213a.
  • the inner side of the membrane 212a is connected to the upper cover 11a, and the frame 23a is connected to the annular dome 213a.
  • the magnetic circuit system 3a includes a magnetic conductive plate 31a fixed to the lower cover 12a, a main magnetic steel 32a fixed to the magnetic conductive plate 31a, surrounding the main magnetic steel 32a and spaced apart to form the magnetic gap 30a
  • the secondary magnetic steel 33a and the pole core 34a fixed to the primary magnetic steel 32a and the secondary magnetic steel 33a at the same time and arranged opposite to the magnetic conductive plate 31a.
  • the pole core 34a is fixed to the upper cover 11a.
  • the structure is simple and easy to produce and assemble, and it is better to make the distance between the magnetic circuit system 3a from the magnetic conductive plate 31a and the pole core 34a approximately the same as the distance from the lower cover 12a to the upper cover 11a. .
  • This structure makes it possible to maximize the height of the main magnet 32a and the auxiliary magnet 33a in the vibration direction of the vibration system 2a, thereby making the magnetic gap 30a deeper and increasing the voice coil 22a Effective vibration space. Therefore, the height of the magnetic circuit system 3a in the vibration direction of the vibration system 2a is not affected by the vibration system 2a, and the magnetic circuit system 3a has a high space utilization rate, thereby maximizing the magnetic circuit.
  • the acoustic performance of the sound generating device 200 is excellent.
  • the present invention provides a sound generating device 300.
  • the sound generating device 300 in the third embodiment has basically the same structure of the sound generating device 100, and different structures and different connection modes are listed below.
  • the sound generating device 300 includes a basin frame 1b, a vibration system 2b fixed to the basin frame 1b, and a magnetic circuit system 3b that drives the vibration system 2b to vibrate and produce sound.
  • the magnetic circuit system 3b has a magnetic gap 30b.
  • the basin frame 1b includes a lower cover 12b for accommodating the magnetic circuit system 3b and an upper cover 11b disposed opposite to the lower cover 12b.
  • the vibration system 2b includes a ring-shaped diaphragm 21b, a voice coil 22b inserted in the magnetic gap 30b to drive the diaphragm 21b to vibrate and produce sound, and a voice coil 22b that connects the diaphragm 21b and the voice coil 22b respectively Skeleton 23b;
  • the diaphragm 21b includes a first annular diaphragm 211b, a second annular diaphragm 212b and an annular dome 213b, the outer side of the first annular diaphragm 211b is connected with the lower cover 12b, the first The inner side of the annular diaphragm 211b is connected with the outer side of the annular dome 213b, the outer side of the second annular diaphragm 212b is connected with the inner side of the annular dome 213b, and the inner side of the second annular diaphragm 212b is connected with the The magnetic circuit system 3b is connected, and the skeleton 23b
  • the magnetic circuit system 3b includes a magnetic conductive plate 31b fixed to the lower cover 12b, a main magnetic steel 32b fixed to the magnetic conductive plate 31b, surrounding the main magnetic steel 32b and spaced apart to form the magnetic gap 30b
  • the secondary magnetic steel 33b and the pole core 34b fixed to the primary magnetic steel 32b and the secondary magnetic steel 33b at the same time and arranged opposite to the magnetic conductive plate 31b.
  • the pole core 34b is fixed to the upper cover 11b.
  • the structure is simple and easy to produce and assemble, and it is better to make the distance between the magnetic circuit system 3b from the magnetic conductive plate 31b to the pole core 34b approximately the same as the distance from the lower cover 12b to the upper cover 11b .
  • This structure makes it possible to maximize the height of the main magnet 32b and the auxiliary magnet 33b in the vibration direction of the vibration system 2b, thereby making the magnetic gap 30b deeper and increasing the voice coil 22b Effective vibration space. Therefore, the height of the magnetic circuit system 3b in the vibration direction of the vibration system 2b is not affected by the vibration system 2b, and the magnetic circuit system 3a has a high space utilization rate, thereby maximizing the magnetic circuit.
  • the sound generating device 300 has excellent acoustic performance.
  • the inner side of the second annular diaphragm 212b is connected to the magnetic circuit system 3b.
  • the inner side of the second annular diaphragm 212b is sandwiched between the secondary magnetic steel 33b and the pole core 34b.
  • the second annular diaphragm 212b may be separately fixed to the pole core 34b or the auxiliary magnetic steel 33b.
  • the present invention provides a sound generating device 300.
  • the sound emitting device 400 in the fourth embodiment has basically the same structure of the sound emitting device 100, and different structures and different connection modes are listed below.
  • the sound generating device 400 includes a basin frame 1c, a vibration system 2c fixed to the basin frame 1c, and a magnetic circuit system 3c that drives the vibration system 2c to vibrate and produce sound.
  • the magnetic circuit system 3c has a magnetic gap 30c.
  • the basin frame 1c further includes an upper cover 11c covering the lower cover 12c, and the diaphragm 21c and the upper cover 11c jointly enclose a front cavity 101c.
  • the upper cover 11c is provided with a sound hole 110c penetrating therethrough, and the sound hole 110c communicates the front cavity 101c with the outside.
  • the upper cover 11c has a ring shape
  • the lower cover 12c has a ring shape
  • the upper cover 11c and the lower cover 12c jointly enclose a receiving space 10c and have a ring shape and surround the receiving space 10c.
  • the diaphragm 21c is located in the sound cavity 20c, and the magnetic circuit system 3c is accommodated in the accommodating space 10c.
  • the vibration system 2c includes a ring-shaped diaphragm 21c, a voice coil 22c inserted in the magnetic gap 30c to drive the diaphragm 21c to vibrate and produce sound, and connect the diaphragm 21c and The frame 23c of the voice coil 22c;
  • the diaphragm 21c includes a first annular diaphragm 211c, a second annular diaphragm 212c, and an annular dome 213c.
  • the inner side of the membrane 212c is connected to the magnetic circuit system 3c, and the skeleton 23c is connected to the annular dome 213c;
  • the magnetic circuit system 3c includes a magnetic conductive plate 31c fixed to the lower cover 12c, a main magnetic steel 32c fixed to the magnetic conductive plate 31c, surrounding the main magnetic steel 32c and spaced apart from each other
  • the secondary magnetic steel 33c forming the magnetic gap 30c and the pole core 34c fixed to the primary magnetic steel 32c and the secondary magnetic steel 33c at the same time and arranged opposite to the magnetic conductive plate 31c.
  • the inner side of the second annular diaphragm 212c is connected to the magnetic circuit system 3c.
  • the inner side of the second annular diaphragm 212c is sandwiched between the secondary magnetic steel 33c and the pole core 34c.
  • the second annular diaphragm 212c may be separately fixed to the pole core 34c or the auxiliary magnetic steel 33c.
  • the sound generating device of the present invention is equipped with a double-diaphragm structure in which the vibration system includes a first ring-shaped diaphragm and a second ring-shaped diaphragm, which can make the vibration of the vibration system more balanced and effectively reduce the vibration caused by unbalanced vibration.
  • the noise effectively improves the sound quality.
  • the three sounding devices of the present invention are structurally connected to the lower cover with the outer side of the first ring diaphragm, and the upper cover or the magnetic circuit system is connected to the inner side of the second ring diaphragm, and the magnetic circuit system is fixed to the lower cover and located in the The inner side of the second ring diaphragm is connected to the lower cover or the upper cover to the magnetic circuit system through the upper cover, respectively.
  • the above-mentioned different structures make the height of the magnetic circuit system in the vibration direction of the vibration system unaffected by the vibration system, and the magnetic circuit system has a high space utilization rate, thereby maximizing the magnetic circuit and making the acoustic performance of the sound generating device excellent.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

本发明公开一种发声器件，其包括盆架、振动系统及磁路系统；盆架包括用于收容磁路系统的下盖和盖设于下盖的上盖；振动系统包括呈环状的振膜、插入设于所述磁间隙的音圈以及分别连接所述振膜和所述音圈的骨架；振膜包括第一环形振膜、第二环形振膜及环形球顶，第一环形振膜的外侧与下盖连接，第一环形振膜的内侧与环形球顶的外侧连接，第二环形振膜的外侧与环形球顶的内侧连接，第二环形振膜的内侧与上盖连接；所述骨架的一端与环形球顶连接，其另一端延伸至磁间隙内与音圈连接；振膜与上盖共同围成前腔。本发明还公开另两种发声器件。与相关技术相比，本发明的发声器件在空间利用率高、磁路可最大化且声学性能优。

Description

发声器件 技术领域
本发明涉及一种电声装置，尤其涉及一种运用于便携式电子产品的发声器件。
 背景技术
随着移动互联网时代的到来，智能移动设备的数量不断上升。而在众多移动设备之中，手机无疑是最常见、最便携的移动终端设备。目前，手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的发声器件被大量应用到现在的智能移动设备之中。
相关技术的所述发声器件包括盆架、安装在盆架上的振动系统和具有磁间隙的磁路系统，振动系统包括振膜、环形球顶、骨架和音圈，环形球顶与振膜连接，音圈在其振动方向上通过设置骨架与环形球顶连接以带动振膜振动发声；音圈插入磁间隙内以驱动振膜发声，振膜与磁路系统正对设置。
 技术问题
然而，相关技术的发声器件中，现有发声器件的结构采用单振膜的设计方式常常会导致振动系统振动不平衡，存在较多杂音，振膜与磁路系统正对设置使得磁路系统在振膜的振动方向上的高度受到限制，不能使磁路最大化，从而影响到发声器件的声学性能不佳。
因此，实有必须提供一种新的扬声器箱解决上述技术问题。
 技术解决方案
本发明的目的在于提供一种在空间利用率高、磁路可最大化且声学性能优的发声器件。
为了达到上述目的，本发明提供了一种发声器件， 其包括盆架及分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙；所述盆架包括用于收容所述磁路系统的下盖和盖设于所述下盖的上盖；所述振动系统包括呈环状的振膜、插入设于所述磁间隙以驱动所述振膜振动发声的音圈以及分别连接所述振膜和所述音圈的骨架；所述振膜包括第一环形振膜、第二环形振膜及环形球顶，所述第一环形振膜的外侧与所述下盖连接，所述第一环形振膜的内侧与所述环形球顶的外侧连接，所述第二环形振膜的外侧与所述环形球顶的内侧连接，所述第二环形振膜的内侧与所述上盖连接；所述骨架的一端与所述环形球顶连接，其另一端延伸至所述磁间隙内与所述音圈连接；所述振膜与所述上盖共同围成前腔。
优选的，所述上盖呈环状，所述下盖呈环状，所述上盖和所述下盖共同围成收容空间和呈环状且环绕所述收容空间的发声腔，所述振膜位于发声腔内，所述磁路系统收容于收容空间。
优选的，所述磁路系统包括固定于所述下盖的导磁板、固定于所述导磁板的主磁钢以及环绕所述主磁钢并相互间隔形成所述磁间隙的副磁钢，所述副磁钢设有避让缺口，所述骨架穿过所述避让缺口并延伸至所述磁间隙内与所述音圈连接。
优选的，所述上盖包括上盖底壁、由所述上盖底壁的外周侧弯折延伸的上盖外壁以及由所述上盖底壁的内周侧弯折延伸的上盖内壁；所述下盖包括下盖底壁、由所述下盖底壁的外周侧弯折延伸的下盖外壁以及由所述下盖底壁的内周侧弯折延伸的下盖内壁；所述上盖外壁抵接所述下盖外壁，所述第一环形振膜的外侧抵接所述下盖内壁，所述第二环形振膜的内侧抵接于所述上盖内壁，所述下盖内壁设有让位孔，所述骨架依次穿过所述让位孔和所述避让缺口延伸至所述磁间隙内并与所述音圈连接。
本发明提供了一种发声器件，其包括盆架及分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙；所述盆架包括用于收容所述磁路系统的下盖和固定于所述磁路系统的上盖； 所述振动系统包括呈环状的振膜、插入设于所述磁间隙以驱动所述振膜振动发声的音圈以及分别连接所述振膜和所述音圈的骨架；所述振膜包括第一环形振膜、第二环形振膜及环形球顶，所述第一环形振膜的外侧与所述下盖连接，所述第一环形振膜的内侧与所述环形球顶的外侧连接，所述第二环形振膜的外侧与所述环形球顶的内侧连接，所述第二环形振膜的内侧与所述上盖连接；所述骨架的一端与所述环形球顶连接，其另一端延伸至所述磁间隙内与所述音圈连接。
优选的，所述磁路系统包括固定于所述下盖的导磁板、固定于所述导磁板的主磁钢、环绕所述主磁钢并相互间隔形成所述磁间隙的副磁钢以及同时固定于所述主磁钢和所述副磁钢且与所述导磁板相对设置的极芯，所述副磁钢设有避让缺口，所述骨架穿过所述避让缺口并延伸至所述磁间隙内与所述音圈连接，所述极芯固定于所述上盖。
本发明提供了一种发声器件，其包括盆架及分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙；所述盆架包括用于收容所述磁路系统的下盖；所述振动系统包括呈环状的振膜、插入设于所述磁间隙以驱动所述振膜振动发声的音圈以及分别连接所述振膜和所述音圈的骨架；所述振膜包括第一环形振膜、第二环形振膜及环形球顶，所述第一环形振膜的外侧与所述下盖连接，所述第一环形振膜的内侧与所述环形球顶的外侧连接，所述第二环形振膜的外侧与所述环形球顶的内侧连接，所述第二环形振膜的内侧与所述磁路系统连接；所述骨架的一端与所述环形球顶连接，其另一端延伸至所述磁间隙内与所述音圈连接。
优选的，所述磁路系统包括固定于所述下盖的导磁板、固定于所述导磁板的主磁钢以及环绕所述主磁钢并相互间隔形成所述磁间隙的副磁钢，所述副磁钢设有避让缺口，所述骨架穿过所述避让缺口并延伸至所述磁间隙内与所述音圈连接。
优选的，所述盆架还包括与所述下盖相对设置的上盖，所述磁路系统还包括同时固定于所述主磁钢和所述副磁钢且与所述导磁板相对设置的极芯，所述极芯固定于所述上盖。
优选的，所述第二环形振膜的内侧夹设于所述副磁钢和所述极芯之间。
优选的，所述盆架还包括盖设于所述下盖的上盖，所述上盖和所述下盖共同围成收容空间，所述磁路系统收容于收容空间，所述振膜与所述上盖共同围成前腔。
优选的，所述上盖呈环状，所述下盖呈环状，所述上盖和所述下盖共同围成所述收容空间和呈环状且环绕所述收容空间的发声腔，所述振膜位于发声腔内。
优选的，所述骨架设有两个，两个所述骨架分别从所述音圈的两相对侧延伸连接所述环形球顶。
优选的，每个所述骨架都包括第一延伸部、第二延伸部和第三延伸部，所述第一延伸部间隔设置于所述音圈的旁侧，所述第二延伸部和所述第三延伸部分别从所述第一延伸部的两端沿垂直所述音圈之振动方向的方向连接所述音圈的外侧壁，所述第一延伸部连接所述环形球顶。
 有益效果
与相关技术相比，本发明的发声器件在设置振动系统包括第一环形振膜和第二环形振膜的双振膜结构，可以使得振动系统的振动更为平衡，有效减少因振动不平衡产生的杂音，有效提升音质。本发明的三种发声器件在结构上通过将第一环形振膜的外侧连接下盖，第二环形振膜的内侧连接上盖或者磁路系统，将磁路系统固定于下盖且位于所述第二环形振膜的内侧，并分别通过上盖连接下盖或者上盖连接磁路系统。上述不同的结构从而使得磁路系统在振动系统的振动方向上的高度不受振动系统的影响，磁路系统在空间利用率高，从而使磁路最大化，使得发声器件的声学性能优。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本发明发声器件实施例一的立体结构示意图；
图2为本发明发声器件实施例一的部分立体结构分解图；
图3为沿图1中A-A线的剖示图；
图4为本发明发声器件实施例一的上盖的立体结构示意图；
图5为本发明发声器件实施例一的振动系统的部分立体结构分解图；
图6为本发明发声器件实施例一的振动系统另一角度的部分立体结构分解图；
图7为本发明发声器件实施例一的磁路系统的部分立体结构分解图；
图8为本发明发声器件实施例一的部分磁路系统、音圈及骨架的部分立体结构装配示意图
图9为本发明发声器件实施例二的的剖示图；
图10为本发明发声器件实施例三的的剖示图；
图11为本发明发声器件实施例四的的剖示图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
(实施例一)
请同时参阅图1-8，本发明提供了一种发声器件100，包括盆架1、振动系统2及磁路系统3。其中，所述磁路系统3具有磁间隙30。
所述盆架1包括用于收容所述磁路系统3的下盖12和盖设于所述下盖12的上盖11。
所述上盖11包括上盖底壁111、由所述上盖底壁111的外周侧弯折延伸的上盖外壁112、由所述上盖底壁111的内周侧弯折延伸的上盖内壁113以及贯穿其上的发声孔110。
所述下盖12包括下盖底壁121、由所述下盖底壁121的外周侧弯折延伸的下盖外壁122以及由所述下盖底壁121的内周侧弯折延伸的下盖内壁123。所述发声孔110开设于所述上盖外壁112。
所述上盖外壁112抵接所述下盖外壁122。在本实施方式中，所述上盖11呈环状。所述下盖12呈环状。所述上盖11和所述下盖12共同围成收容空间10和呈环状且环绕所述收容空间10的发声腔20。
所述振动系统2固定于所述盆架1。
所述振动系统2包括固定于所述盆架1的振膜21、插入所述磁间隙30以驱动所述振膜21振动发声的音圈22以及分别固定于所述振膜21和所述音圈22的骨架23。
所述振膜21位于发声腔20内。具体的，所述振膜21包括第一环形振膜211、第二环形振膜212及环形球顶213。
所述第一环形振膜211的外侧与所述下盖12连接。具体的，所述第一环形振膜211的外侧抵接于所述下盖内壁123。
所述第一环形振膜211的内侧与所述环形球顶213的外侧连接。所述第二环形振膜212的外侧与所述环形球顶213的内侧连接。
所述第二环形振膜212的内侧与所述上盖11连接。具体的，所述第二环形振膜212的内侧抵接于所述上盖内壁113。即所述振膜21与所述上盖11共同围成前腔101。所述发声孔110将所述前腔101与外界连通。
所述第一环形振膜211、所述第二环形振膜212、所述环形球顶213、所述上盖11以及所述下盖12整体可以围合形成所述收容空间10，使得所述收容空间10为一个密封的空间，保证密封性。该结构有利于生产组装。
所述振动系统2通过设置所述第一环形振膜211和所述第二环形振膜212的双振膜结构，可以使得所述振动系统2的振动更为平衡，有效减少因振动不平衡产生的杂音，有效提升音质。
具体的，所述第一环形振膜211包括第一折环2111、位于所述第一折环2111内侧的第一固定部2112和位于所述第一折环2111外侧的第二固定部2113，所述第一固定部2112与所述环形球顶213的外侧连接，所述第二固定部2113与所述下盖内壁123连接；所述第二环形振膜212包括第二折环2121、位于所述第二折环2121内侧的第三固定部2122和位于所述第二折环2121外侧的第四固定部2123，所述第三固定部2122与所述上盖内壁113连接，所述第四固定部2123与所述环形球顶213的内侧连接。
所述第一折环2111为两端分别从所述第一固定部2112和所述第二固定部2113朝远离所述上盖11的方向弯曲凸出设置的弧形结构，所述第二折环2121为两端分别从所述第三固定部2122和所述第四固定部2123朝远离所述上盖11的方向弯曲凸出设置的弧形结构。
所述音圈22插入所述磁间隙30。所述音圈22用于驱动所述振膜21振动发声。
所述骨架23的一端与所述音圈22连接、另一端与所述环形球顶213连接。所述骨架23用于将所述音圈22与所述环形球顶213连接。从而实现所述音圈22于驱动所述振膜21振动发声。
在本实施方式中，所述骨架23设有两个。两个所述骨架23分别从所述音圈22的两相对侧延伸连接所述环形球顶213。双骨架结构使得所述音圈22于驱动所述振膜21的振动平衡性好，从而发使得所述振动系统2的振动均衡，有利于提高音质，使得所述发声器件100的声学效果好。可以理解地，所述骨架23不局限于设有两个，所述骨架23设有一个、三个、四个以及其他任意个数也是可以的，只要所述音圈22可以通过所述骨架23带动所述第一环形振膜211和所述第二环形振膜212振动即可。
每个所述骨架23都包括第一延伸部231、第二延伸部232和第三延伸部233。所述第一延伸部231间隔设置于所述音圈22的旁侧。所述第二延伸部232和所述第三延伸部233分别从所述第一延伸部231的两端沿垂直所述音圈22之振动方向的方向连接所述音圈22的外侧壁。
在本实施方式中，所述下盖内壁123设有让位孔1230。每个所述骨架23穿过相应的所述让位孔1230与所述音圈22连接。具体的，所述第二延伸部232和所述第三延伸部233分别穿过与相对应的一个所述让位孔1230。通过设置所述让位孔1230可以有效增大所述音圈22的振动行程，从而提升所述发声器件100的功率。
所述第一延伸部231连接所述环形球顶213。所述骨架23的结构使得所述第一延伸部231和环形球顶23具有较大的连接面积。所述骨架23和所述环形球顶213的连接更为稳固，这样，当所述音圈22通过所述环形球顶213带动所述环形球顶213高频振动或者大幅度振动时，所述骨架23和所述环形球顶213的连接处不容易发生断裂。
更优的，所述振动系统2还包括所述振膜21相对且间隔设置的弹性支撑组件24，所述弹性支撑组件24一端固定于所述下盖12，其另一端固定于所述骨架23远离所述上盖11的一侧，该种结构下所述弹性支撑组件24没有影响磁间隙，优化了磁路系统的设计，使得所述发声器件100的声学性能更优，同时所述弹性支撑组件24的设置便于提升所述振动系统2的稳定性。
所述弹性支撑组件24包括两个，每一所述弹性支撑组件24连接于与其相对应的一个所述骨架23。双所述弹性支撑组件24的设置形成对称结构，对所述音圈22的支撑效果更稳定，防所述音圈22横向摆动效果更优。
所述磁路系统3固定于所述盆架1。所述磁路系统3收容于收容空间10。所述磁路系统3在所述音圈22的振动方向上不会对所述音圈22造成阻碍，可以大幅提高所述音圈22的有效振动空间，提升所述发声器件100的功率，且便于所述发声器件100的优化设计。
所述磁路系统3包括固定于所述下盖12的导磁板31、固定于所述导磁板31的主磁钢32以及环绕所述主磁钢32并相互间隔形成所述磁间隙30的副磁钢33，所述副磁钢33设有避让缺口330，所述骨架23穿过所述避让缺口330并延伸至所述磁间隙30内与所述音圈22连接。具体的，所述骨架23依次穿过所述让位孔1230和所述避让缺口330延伸至所述磁间隙30内并与所述音圈22连接。
在本实施方式中，所述副磁钢33包括四个，两个相邻的所述副磁钢33间隔形成所述避让缺口330。可以理解地，所述副磁钢33不局限于设有四个，例如所述副磁钢33设有两个，两个所述副磁钢33分别设置于所述主磁钢32的两相对侧也是可以的。
所述导磁板31固定于所述下盖12。所述导磁板31嵌设于所述第二通孔120中。由于所述发声器件100尺寸的限制，所述下盖12到所述环形球顶213的距离有限，通过在所述下盖12上开设所述第二通孔120，将导磁板31嵌设于通孔113中，可以减小所述导磁板31占用所述下盖12到所述环形球顶213的距离，从而可以增大所述音圈22的有效振动空间，提高了所述发声器件100的功率。
（实施例二）
请参阅图9，本发明提供了一种发声器件200。本实施例二中的所述发声器件200具有所述发声器件100的结构基本相同，以下列出不同的结构和不同的连接方式。
所述发声器件200包括盆架1a及分别固定于所述盆架1a的振动系统2a和驱动所述振动系统2a振动发声的磁路系统3a。所述磁路系统3a具有磁间隙30。
在本实施方式中，所述盆架1a包括用于收容所述磁路系统3a的下盖12a和固定于所述磁路系统3a的上盖11a。
在本实施方式中，所述振动系统2a包括呈环状的振膜21a、插入设于所述磁间隙30a以驱动所述振膜21a振动发声的音圈22a以及分别连接所述振膜21a和所述音圈22a的骨架23a；所述振膜21a包括第一环形振膜211a、第二环形振膜212a及环形球顶213a，所述第一环形振膜211a的外侧与所述下盖12a连接，所述第一环形振膜211a的内侧与所述环形球顶213a的外侧连接，所述第二环形振膜212a的外侧与所述环形球顶213a的内侧连接，所述第二环形振膜212a的内侧与所述上盖11a连接，所述骨架23a与所述环形球顶213a连接。
所述磁路系统3a包括固定于所述下盖12a的导磁板31a、固定于所述导磁板31a的主磁钢32a、环绕所述主磁钢32a并相互间隔形成所述磁间隙30a的副磁钢33a以及同时固定于所述主磁钢32a和所述副磁钢33a且与所述导磁板31a相对设置的极芯34a。
在本实施方式中，所述极芯34a固定于所述上盖11a。该结构简单且易于生产组装，更优的是使得所述磁路系统3a从所述导磁板31a到所述极芯34a的距离与所述下盖12a到所述上盖11a的距离大致相当。该结构使得所述主磁钢32a和所述副磁钢33a在所述振动系统2a的振动方向上的高度可以最大化，从而使的所述磁间隙30a较深，增大所述音圈22a的有效振动空间。故使得所述磁路系统3a在所述振动系统2a的振动方向上的高度不受所述振动系统2a的影响，所述磁路系统3a在空间利用率高，从而使磁路最大化，使得所述发声器件200的声学性能优。
（实施例三）
请参阅图10，本发明提供了一种发声器件300。本实施例三中的所述发声器件300具有所述发声器件100的结构基本相同，以下列出不同的结构和不同的连接方式。
所述发声器件300包括盆架1b及分别固定于所述盆架1b的振动系统2b和驱动所述振动系统2b振动发声的磁路系统3b，所述磁路系统3b具有磁间隙30b。
在本实施方式中，所述盆架1b包括用于收容所述磁路系统3b的下盖12b和与所述下盖12b相对设置的上盖11b。
所述振动系统2b包括呈环状的振膜21b、插入设于所述磁间隙30b以驱动所述振膜21b振动发声的音圈22b以及分别连接所述振膜21b和所述音圈22b的骨架23b；所述振膜21b包括第一环形振膜211b、第二环形振膜212b及环形球顶213b，所述第一环形振膜211b的外侧与所述下盖12b连接，所述第一环形振膜211b的内侧与所述环形球顶213b的外侧连接，所述第二环形振膜212b的外侧与所述环形球顶213b的内侧连接，所述第二环形振膜212b的内侧与所述磁路系统3b连接，所述骨架23b与所述环形球顶213b连接；
所述磁路系统3b包括固定于所述下盖12b的导磁板31b、固定于所述导磁板31b的主磁钢32b、环绕所述主磁钢32b并相互间隔形成所述磁间隙30b的副磁钢33b以及同时固定于所述主磁钢32b和所述副磁钢33b且与所述导磁板31b相对设置的极芯34b。
所述极芯34b固定于所述上盖11b。该结构简单且易于生产组装，更优的是使得所述磁路系统3b从所述导磁板31b到所述极芯34b的距离与所述下盖12b到所述上盖11b的距离大致相当。该结构使得所述主磁钢32b和所述副磁钢33b在所述振动系统2b的振动方向上的高度可以最大化，从而使的所述磁间隙30b较深，增大所述音圈22b的有效振动空间。故使得所述磁路系统3b在所述振动系统2b的振动方向上的高度不受所述振动系统2b的影响，所述磁路系统3a在空间利用率高，从而使磁路最大化，使得所述发声器件300的声学性能优。
所述第二环形振膜212b的内侧与所述磁路系统3b连接。在本实施方式中，所述第二环形振膜212 b的内侧夹设于所述副磁钢33b和所述极芯34b之间。不限于此，所述第二环形振膜212b可以单独固定于所述极芯34b或所述副磁钢33b。该结构使得所述发声器件300的所述振膜21b不需要固定于所述下盖12b，从而使磁路空间更大，所述磁路系统3b在空间利用率高，从而使磁路最大化，使得所述发声器件300的声学性能优。
（实施例四）
请参阅图11，本发明提供了一种发声器件300。本实施例四中的所述发声器件400具有所述发声器件100的结构基本相同，以下列出不同的结构和不同的连接方式。
所述发声器件400包括盆架1c及分别固定于所述盆架1c的振动系统2c和驱动所述振动系统2c振动发声的磁路系统3c，所述磁路系统3c具有磁间隙30c。
在本实施方式中，所述盆架1 c还包括盖设于所述下盖12c的上盖11c，所述振膜21c与所述上盖11c共同围成前腔101c。所述上盖11c设有贯穿其上的发声孔110c，所述发声孔110c将所述前腔101c与外界连通。
在本实施方式中，所述上盖11c呈环状，所述下盖12c呈环状，所述上盖11c和所述下盖12c共同围成收容空间10c和呈环状且环绕所述收容空间10c的发声腔20c，所述振膜21c位于发声腔20c内，所述磁路系统3c收容于收容空间10c。
在本实施方式中，所述振动系统2c包括呈环状的振膜21c、插入设于所述磁间隙30c以驱动所述振膜21c振动发声的音圈22c以及分别连接所述振膜21c和所述音圈22c的骨架23c；所述振膜21c包括第一环形振膜211c、第二环形振膜212c及环形球顶213c，所述第一环形振膜211c的外侧与所述下盖12c连接，所述第一环形振膜211c的内侧与所述环形球顶213c的外侧连接，所述第二环形振膜212c的外侧与所述环形球顶213c的内侧连接，所述第二环形振膜212c的内侧与所述磁路系统3c连接，所述骨架23c与所述环形球顶213c连接；
在本实施方式中，所述磁路系统3c包括固定于所述下盖12c的导磁板31c、固定于所述导磁板31c的主磁钢32c、环绕所述主磁钢32c并相互间隔形成所述磁间隙30c的副磁钢33c以及同时固定于所述主磁钢32c和所述副磁钢33c且与所述导磁板31c相对设置的极芯34c。
在本实施方式中，所述第二环形振膜212c的内侧与所述磁路系统3c连接。在本实施方式中，所述第二环形振膜212c的内侧夹设于所述副磁钢33 c和所述极芯34 c之间。不限于此，所述第二环形振膜212c可以单独固定于所述极芯34c或所述副磁钢33c。该结构使得所述发声器件400的所述振膜21c不需要固定于所述下盖12c，从而使磁路空间更大，所述磁路系统3c在空间利用率高，从而使磁路最大化，使得所述发声器件400的声学性能优。
与相关技术相比，本发明的发声器件在设置振动系统包括第一环形振膜和第二环形振膜的双振膜结构，可以使得振动系统的振动更为平衡，有效减少因振动不平衡产生的杂音，有效提升音质。本发明的三种发声器件在结构上通过将第一环形振膜的外侧连接下盖，第二环形振膜的内侧连接上盖或者磁路系统，将磁路系统固定于下盖且位于所述第二环形振膜的内侧，并分别通过上盖连接下盖或者上盖连接磁路系统。上述不同的结构从而使得磁路系统在振动系统的振动方向上的高度不受振动系统的影响，磁路系统在空间利用率高，从而使磁路最大化，使得发声器件的声学性能优。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (14)

  1. 一种发声器件，其包括盆架及分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙；其特征在于，所述盆架包括用于收容所述磁路系统的下盖和盖设于所述下盖的上盖； 所述振动系统包括呈环状的振膜、插入设于所述磁间隙以驱动所述振膜振动发声的音圈以及分别连接所述振膜和所述音圈的骨架；所述振膜包括第一环形振膜、第二环形振膜及环形球顶，所述第一环形振膜的外侧与所述下盖连接，所述第一环形振膜的内侧与所述环形球顶的外侧连接，所述第二环形振膜的外侧与所述环形球顶的内侧连接，所述第二环形振膜的内侧与所述上盖连接；所述骨架的一端与所述环形球顶连接，其另一端延伸至所述磁间隙内与所述音圈连接；所述振膜与所述上盖共同围成前腔。
  2. 根据权利要求1所述的发声器件，其特征在于，所述上盖呈环状，所述下盖呈环状，所述上盖和所述下盖共同围成收容空间和呈环状且环绕所述收容空间的发声腔，所述振膜位于发声腔内，所述磁路系统收容于收容空间。
  3. 根据权利要求1所述的发声器件，其特征在于，所述磁路系统包括固定于所述下盖的导磁板、固定于所述导磁板的主磁钢以及环绕所述主磁钢并相互间隔形成所述磁间隙的副磁钢，所述副磁钢设有避让缺口，所述骨架穿过所述避让缺口并延伸至所述磁间隙内与所述音圈连接。
  4. 根据权利要求3所述的发声器件，其特征在于，所述上盖包括上盖底壁、由所述上盖底壁的外周侧弯折延伸的上盖外壁以及由所述上盖底壁的内周侧弯折延伸的上盖内壁；所述下盖包括下盖底壁、由所述下盖底壁的外周侧弯折延伸的下盖外壁以及由所述下盖底壁的内周侧弯折延伸的下盖内壁；所述上盖外壁抵接所述下盖外壁，所述第一环形振膜的外侧抵接所述下盖内壁，所述第二环形振膜的内侧抵接于所述上盖内壁，所述下盖内壁设有让位孔，所述骨架依次穿过所述让位孔和所述避让缺口延伸至所述磁间隙内并与所述音圈连接。
  5. 一种发声器件，其包括盆架及分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙；其特征在于，所述盆架包括用于收容所述磁路系统的下盖和固定于所述磁路系统的上盖；所述振动系统包括呈环状的振膜、插入设于所述磁间隙以驱动所述振膜振动发声的音圈以及分别连接所述振膜和所述音圈的骨架；所述振膜包括第一环形振膜、第二环形振膜及环形球顶，所述第一环形振膜的外侧与所述下盖连接，所述第一环形振膜的内侧与所述环形球顶的外侧连接，所述第二环形振膜的外侧与所述环形球顶的内侧连接，所述第二环形振膜的内侧与所述上盖连接；所述骨架的一端与所述环形球顶连接，其另一端延伸至所述磁间隙内与所述音圈连接。
  6. 根据权利要求5所述的发声器件，其特征在于，所述磁路系统包括固定于所述下盖的导磁板、固定于所述导磁板的主磁钢、环绕所述主磁钢并相互间隔形成所述磁间隙的副磁钢以及同时固定于所述主磁钢和所述副磁钢且与所述导磁板相对设置的极芯，所述副磁钢设有避让缺口，所述骨架穿过所述避让缺口并延伸至所述磁间隙内与所述音圈连接，所述极芯固定于所述上盖。
  7. 一种发声器件，其包括盆架及分别固定于所述盆架的振动系统和驱动所述振动系统振动发声的磁路系统，所述磁路系统具有磁间隙；其特征在于，所述盆架包括用于收容所述磁路系统的下盖；所述振动系统包括呈环状的振膜、插入设于所述磁间隙以驱动所述振膜振动发声的音圈以及分别连接所述振膜和所述音圈的骨架；所述振膜包括第一环形振膜、第二环形振膜及环形球顶，所述第一环形振膜的外侧与所述下盖连接，所述第一环形振膜的内侧与所述环形球顶的外侧连接，所述第二环形振膜的外侧与所述环形球顶的内侧连接，所述第二环形振膜的内侧与所述磁路系统连接；所述骨架的一端与所述环形球顶连接，其另一端延伸至所述磁间隙内与所述音圈连接。
  8. 根据权利要求7所述的发声器件，其特征在于，所述磁路系统包括固定于所述下盖的导磁板、固定于所述导磁板的主磁钢以及环绕所述主磁钢并相互间隔形成所述磁间隙的副磁钢，所述副磁钢设有避让缺口，所述骨架穿过所述避让缺口并延伸至所述磁间隙内与所述音圈连接。
  9. 根据权利要求8所述的发声器件，其特征在于，所述盆架还包括与所述下盖相对设置的上盖，所述磁路系统还包括同时固定于所述主磁钢和所述副磁钢且与所述导磁板相对设置的极芯，所述极芯固定于所述上盖。
  10. 根据权利要求9所述的发声器件，其特征在于，所述第二环形振膜的内侧夹设于所述副磁钢和所述极芯之间。
  11. 根据权利要求8所述的发声器件，其特征在于，所述盆架还包括盖设于所述下盖的上盖，所述上盖和所述下盖共同围成收容空间，所述磁路系统收容于收容空间，所述振膜与所述上盖共同围成前腔。
  12. 根据权利要求11所述的发声器件，其特征在于，所述上盖呈环状，所述下盖呈环状，所述上盖和所述下盖共同围成所述收容空间和呈环状且环绕所述收容空间的发声腔，所述振膜位于发声腔内。
  13. 根据权利要求1-12任意一项所述的发声器件，其特征在于，所述骨架设有两个，两个所述骨架分别从所述音圈的两相对侧延伸连接所述环形球顶。
  14. 根据权利要求13所述的发声器件，其特征在于，每个所述骨架都包括第一延伸部、第二延伸部和第三延伸部，所述第一延伸部间隔设置于所述音圈的旁侧，所述第二延伸部和所述第三延伸部分别从所述第一延伸部的两端沿垂直所述音圈之振动方向的方向连接所述音圈的外侧壁，所述第一延伸部连接所述环形球顶。
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