WO2021237793A1 - 发声器件 - Google Patents

发声器件 Download PDF

Info

Publication number
WO2021237793A1
WO2021237793A1 PCT/CN2020/094707 CN2020094707W WO2021237793A1 WO 2021237793 A1 WO2021237793 A1 WO 2021237793A1 CN 2020094707 W CN2020094707 W CN 2020094707W WO 2021237793 A1 WO2021237793 A1 WO 2021237793A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound
housing
boss
sounding
rear shell
Prior art date
Application number
PCT/CN2020/094707
Other languages
English (en)
French (fr)
Inventor
曹成铭
吴树文
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 WO2021237793A1 publication Critical patent/WO2021237793A1/zh

Links

Classifications

    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • 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
    • H04R9/04—Construction, mounting, or centering of coil
    • 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 utility model relates to the field of electro-acoustic conversion, in particular to a sound-producing device applied to portable mobile electronic products.
  • Sounding devices also known as speakers, are widely used in portable mobile electronic products, such as mobile phones, to convert audio signals into sound for playback.
  • the sounding devices have high loudness and amplitude.
  • the related art sounding device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system with a magnetic gap.
  • the magnetic circuit system drives the vibration system to vibrate and produce sound
  • the vibration system includes The diaphragm of the basin frame and a voice coil fixed to the diaphragm and inserted in the magnetic gap to drive the diaphragm to vibrate and produce sound.
  • the related art sound device does not have a rear cavity structure or the rear cavity is an open structure, when used in portable mobile electronic products such as mobile phones, it will cause the problem of mobile phone shell vibration, resulting in poor user experience; and mobile phone space Due to the limited size, the sound emitting device cannot be designed into a speaker box structure with a rear cavity in the prior art to overcome this problem. At the same time, the sound emitting device cannot be formed on the basis of the rear cavity for filling sound-absorbing particles to realize a DBASS virtual sound cavity.
  • the purpose of the utility model is to provide a sound device with simple structure, good acoustic performance and good user experience.
  • the present invention provides a sound emitting device, which includes a housing, a sound emitting unit fixed to the casing, a boss, and a breathable isolator fixed to the boss, the sound emitting unit It includes a basin frame fixed to the shell, a vibration system fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and emit sound.
  • the vibration system includes the vibration system fixed to the basin frame.
  • the boss is formed by the shell extending in the direction of the basin frame, the rear shell, the boss, the base and the sounding monomer jointly enclose a rear sound cavity, the sounding single
  • the body is provided with a leakage portion communicating with the rear acoustic cavity, and the housing is provided with a leakage hole, which communicates the rear acoustic cavity with the outside;
  • the boss extends from the housing to the rear acoustic cavity
  • the air-permeable spacer is contained in the rear acoustic cavity, and the air-permeable spacer, the rear shell and the boss jointly enclose the powder filling space, and the powder filling space is filled with sound-absorbing particles .
  • the housing includes a rear shell located on the side of the basin frame away from the diaphragm and spaced from the sound emitting unit, and a side wall extending from the periphery of the rear shell in the direction of the diaphragm,
  • the boss is formed by extending the side wall into the rear acoustic cavity, and the side wall surrounds the peripheral side of the basin frame and is fixedly attached to the peripheral side of the basin frame.
  • the housing includes a rear shell located on a side of the basin frame away from the diaphragm and spaced from the sound emitting unit, a side wall extending from the periphery of the rear shell in the direction of the diaphragm, and A base plate bent and extended from the side wall in a direction close to the diaphragm, the base plate is fixed to an end of the basin frame close to the diaphragm, and the boss is moved backward from the side wall The sound cavity is extended and formed.
  • the side wall and at least one side of the basin frame are provided with a gap, and the gap is less than 3 times the thickness of the housing.
  • the boss and the sounding monomer are arranged at intervals, and the air-permeable isolating member is fixed on a side of the boss close to the sounding monomer.
  • the end of the sounding monomer far away from the diaphragm is fixedly connected to the boss, and the air-permeable isolator is fixed to the side of the boss far away from the sounding monomer.
  • the side wall includes a rear shell extension wall extending from the periphery of the rear shell in the direction of the diaphragm, and a rear shell extending wall extending away from the rear shell along the circumferential side of the basin frame and being connected to the rear shell.
  • the extension wall of the base abuts against the extension wall of the base, the extension wall of the base is connected with the base plate, and the boss is formed by extending the extension wall of the rear shell into the rear acoustic cavity.
  • the rear shell, the extension wall of the rear shell and the boss are integrally formed.
  • the side wall includes a rear shell extension wall extending from the periphery of the rear shell in the direction of the diaphragm, and a rear shell extending wall extending away from the rear shell along the circumferential side of the basin frame and being connected to the rear shell.
  • the extension wall of the base abuts against the extension wall of the base, the extension wall of the base surrounds the peripheral side of the basin frame and is fixedly attached to the peripheral side of the basin frame, and the boss extends from the extension wall of the base into the rear acoustic cavity form.
  • the extension wall of the base and the boss are integrally formed.
  • the base plate is provided with a sound outlet penetrating the base plate, and the vibrating membrane is arranged directly opposite to the sound outlet.
  • the housing is made of metal material.
  • the housing is at least partially grounded.
  • the sound generating device further includes a conductive member, one end of the conductive member is electrically connected to the housing, and the other end of the conductive member is used for grounding.
  • the conductive member is formed by extending the housing.
  • the sound emitting device further includes a conductive member, the conductive member includes two electrical pathways, one of the electrical pathways is used to connect the sounding monomer with an external electrical signal, and the other of the electrical pathways The road is used to connect the shell and the ground.
  • the sound-generating device further includes a conductive terminal
  • the rear shell is also provided with an electrical connection hole penetrating therethrough
  • the conductive terminal is at least partially located in the electrical connection hole and exposed to the rear housing for communication with The external circuit is electrically connected.
  • the shell is made of a 0.15mm thick steel sheet.
  • the sound-emitting device includes a sound-guiding shell covering a side of the sound-emitting monomer away from the rear shell, the sound-guiding shell having a sound-guiding cavity forming a side sound-emitting structure, and the sound-guiding cavity and the vibration The membrane is connected.
  • the housing and the sound-emitting monomer also enclose a sound-guiding cavity forming a side sound-emitting structure, and the sound-guiding cavity is in communication with the diaphragm.
  • a side of the air-permeable spacer close to the sound-emitting unit is recessed in a direction away from the sound-emitting unit to form an avoidance step, and the avoidance step is arranged directly opposite to the leakage portion.
  • the sound generating device further includes at least two positioning pieces, the at least two positioning pieces are connected to opposite sides or two diagonal corners of the casing, and the positioning piece is provided at one end away from the casing. There are positioning holes running through it.
  • the positioning piece is formed by extending outward from the casing.
  • the ratio of the thickness of the shell to the thickness of the basin frame is less than 0.4.
  • the area ratio of the orthographic projection of the sound-emitting monomer to the rear shell along the vibration direction of the diaphragm to the rear shell is at least 2/3.
  • a boss formed by designing the shell extending in the direction of the basin frame, so that the shell, the boss, and the sound emitting unit collectively surround the rear Acoustic cavity, the above structure forms a closed back acoustic cavity structure, which is not only simple in structure, and the overall horizontal dimension along the vibration direction perpendicular to the diaphragm is small, but also the closed back acoustic cavity structure enables the shell to absorb vibration, thereby making the sound After the device is applied to the mobile terminal, the occurrence of case vibration is avoided, and the user experience effect is better.
  • the sound device of the present invention uses a boss formed on the housing to extend into the rear acoustic cavity, and fixes the air-permeable spacer to the boss, so that the air-permeable spacer, the air-permeable spacer and the The shell and the boss jointly enclose a powder filling space, and the sound-absorbing particles are filled in the powder filling space to form a DBASS virtual sound cavity, so that the acoustic effect of the sound generating device is better.
  • Figure 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
  • Figure 2 is an exploded schematic diagram of a part of the three-dimensional structure of the sound generating device of the present invention
  • Figure 3 is a sectional view taken along the line A-A in Figure 1;
  • Fig. 4 is an enlarged view of part B shown in Fig. 3;
  • Figure 5 is a cross-sectional view of another embodiment of Figure 3.
  • Fig. 6 is an enlarged view of a part of C shown in Fig. 5;
  • FIG. 7 is a schematic diagram of a three-dimensional structure of another embodiment of the sound generating device of the present invention.
  • FIG. 8 is a schematic diagram of a three-dimensional structure of another derivative embodiment of FIG. 7;
  • FIG. 9 is a schematic diagram of a three-dimensional structure of another embodiment of adding conductive elements of the sound device of the present invention.
  • Figure 10 is an exploded view of a part of the three-dimensional structure of Figure 9;
  • FIG. 11 is an exploded schematic view of the three-dimensional structure of another embodiment of adding conductive elements to the sound device of the present invention.
  • FIG. 12 is a schematic structural view of an embodiment in which the housing in FIG. 3 forms a side sound emitting structure
  • FIG. 13 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 3;
  • FIG. 14 is a schematic structural diagram of an embodiment in which a positioning piece is added to the sound generating device shown in FIG. 1; FIG.
  • FIG. 15 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 14.
  • the present invention provides a sound emitting device 100, which includes a casing 10, a sound emitting monomer 20 fixed to the casing 10, a boss 6 and a ventilating spacer 7.
  • the sound generating unit 20 includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3.
  • the basin frame 1 is fixed to the housing 10.
  • the vibration system 2 and the magnetic circuit system 3 are respectively supported and fixed to the basin frame 1 and jointly enclose a sounding cavity 103.
  • the magnetic circuit system 3 drives the vibration system 2 to vibrate and produce sound.
  • the vibration system 2 includes a diaphragm 21 fixed to the basin frame 1.
  • the housing 10 includes a rear shell 5 located on the side of the basin frame 1 away from the diaphragm 21 and spaced from the sound emitting unit 20, and extending from the periphery of the rear shell 5 in the direction of the diaphragm 21 ⁇ wall4.
  • the housing 10, the boss 6 and the sound emitting monomer 20 jointly enclose a rear sound cavity 101.
  • the rear housing 5, the boss 6, the side wall 4, the basin frame 1 and the magnetic circuit system 3 collectively enclose the rear acoustic cavity 101.
  • the ratio of the thickness of the shell 10 to the thickness of the basin frame 1 is less than 0.4, so that while the structural strength of the shell 10 is satisfied, the size of the sound emitting device 100 along the direction perpendicular to the vibration direction is increased as little as possible. ; Moreover, the structural strength of the basin frame 1 is guaranteed while occupying as little space as possible.
  • the side wall 4 surrounds the circumference of the basin frame.
  • the side wall 4 includes a rear shell extension wall 51 extending from the periphery of the rear shell 5 in the direction of the diaphragm 21 and a direction extending away from the rear shell 5 along the circumferential side of the basin frame.
  • the base extension wall 43 abuts against the rear shell extension wall 51.
  • the boss 6 is formed by extending the side wall 4 in the direction of the basin frame 1.
  • the rear shell extension wall 51 extends along the vibration direction of the diaphragm 21, and the base extension wall 43 extends along the vibration direction of the diaphragm 21.
  • the location can be sealed by means such as a seal or the rear shell extension wall 51 and the base extension wall 43 can be fixedly connected to form a seal.
  • the boss 6 is formed by extending the base extension wall 43 in the direction of the basin frame 1, and the sound emitting unit 20 can be inserted and assembled by the base extension wall 43 in the direction of the boss 6.
  • the sounding monomer 20 is fixedly connected to the boss 6.
  • the air-permeable spacer 7 is attached to the side of the boss 6 away from the sounding monomer 20.
  • the sound-producing monomers 20 may be arranged at intervals on the side wall 4 or may be attached and fixed to the side wall 4. More preferably, the sound emitting monomer 20 is fixed to the side wall 4, which can further improve the drop performance of the sound emitting device 100.
  • the side wall 4 is fixedly attached to the peripheral side of the basin frame 1.
  • the base extension wall 43 surrounds the peripheral side of the basin frame 1 and is fixedly attached to the peripheral side of the basin frame 1, on the other hand, the side of the basin frame 1 close to the magnetic circuit system and the boss 6 Fixed connection, this structure is beneficial to improve the drop performance of the sound emitting device 100.
  • the sound emitting device 100A further includes a base plate 41 bent and extended from the side wall 4A in a direction close to the diaphragm 21A.
  • the base plate 41 is fixed to an end of the basin frame 1A close to the diaphragm 21A.
  • the base extension wall 43A is connected to the base plate 41, the base plate 41 is provided with a sounding opening 42 penetrating the base plate 41, and the diaphragm 21A is arranged directly opposite to the sounding opening 42 to form a front sounding structure.
  • the sounding monomer 20A is fixed to the base plate 41.
  • the boss 6A is formed by extending the rear shell extension wall 51A in the direction of the basin frame 1A, and the sounding monomer 20A can be formed by the The rear shell extension wall 51A is inserted and assembled in the direction of the base extension wall 43A. Since the base plate 41 is fixed to the basin frame 1A and supports the sound emitting unit 20A, the boss 6A does not need to be fixedly connected to the sound emitting unit 20A. At this time, the boss The side of 6A close to the basin frame 1A is attached and fixed to the air-permeable spacer 7A, which can further expand the Dbass cavity and improve the acoustic performance.
  • the sound emitting monomers 20A may be arranged at intervals on the side wall 4A, or may be attached and fixed to the side wall 4A. In this embodiment, it is more preferable that the sound emitting monomer 20A is spaced apart from the side wall 4A. This structure enlarges the rear acoustic cavity 101A while ensuring the drop performance. Among them, in this embodiment,
  • the enclosed space of the rear acoustic cavity 101 and the rear acoustic cavity 101A are different.
  • the sound emitting unit 20A is fixed on the base plate 41, the drop performance of the sound emitting device 100A can be ensured, and the sound emitting unit 20A is spaced apart from the side wall 4A , The sealing space of the acoustic cavity 101A is larger afterwards.
  • the way of assembling the sounding monomer 20 is more flexible, and the design of the sounding port 42 is also more flexible.
  • both embodiments are optional by those skilled in the art according to actual needs, and the cooperation among the components can also be used in combination according to actual needs.
  • the sound emitting unit 20 is provided with a leakage portion 30 communicating with the rear sound cavity.
  • the leakage portion 30 communicates with the rear acoustic cavity 101, so that the sound-emitting cavity 103 is communicated with the rear acoustic cavity 101 through the leakage portion 30 to improve low-frequency acoustic performance.
  • the housing 10 is provided with a leakage hole 104, and the leakage hole 104 connects the rear acoustic cavity 101 with the outside and is used to balance the sound pressure.
  • the sound generating device 100 of the present invention forms a closed rear acoustic cavity structure, which is simple in structure. On the one hand, it improves the acoustic performance of the sound generating device 100, especially the low-frequency acoustic performance, and on the other hand, due to the existence of the rear acoustic cavity 101 structure , So that the sound generating device 100 will not cause the shell vibration phenomenon of the electronic product such as the mobile terminal after being used in the electronic product such as the mobile terminal, which effectively increases the user experience effect of the customer.
  • the above-mentioned sound emitting device 100A of the present invention forms a closed rear acoustic cavity structure, which is simple in structure. On the one hand, it improves the acoustic performance of the sound emitting device 100A, especially the low-frequency acoustic performance, and on the other hand, because of the structure of the rear acoustic cavity 101A Existence, so that the sound generating device 100A is used in electronic products such as mobile terminals without causing case vibration in the electronic products such as mobile terminals, which effectively increases the user experience effect of customers.
  • a gap 105 is provided between the side wall 4 and at least one side of the basin frame 1, and the gap 105 is less than 3 times the thickness of the housing 10.
  • the interval 105 can enable the sound emitting unit 20 to be assembled into the housing 10 more quickly and improve the assembly efficiency, and at the same time, it will not occupy more lateral space occupied by the sound emitting device 100 perpendicular to the vibration direction.
  • the above-mentioned interval 105 can also be used to increase the volume of the rear acoustic cavity 101 and further improve the acoustic performance. ) 1/3 of the width.
  • At least one side of the side wall 4A and the basin frame 1A is provided with an interval 105A, and the interval 105A is less than 3 times the thickness of the housing 10A.
  • the interval 105A can enable the sound emitting unit 20A to be assembled into the housing 10A more quickly and improve the assembly efficiency, and at the same time, it will not occupy more lateral space occupied by the sound emitting device 100A perpendicular to the vibration direction.
  • the above-mentioned interval 105A can also be used to increase the volume of the rear acoustic cavity 101A and further improve the acoustic performance. ) 1/3 of the width.
  • the side wall 12 and the basin frame 21 may be formed to seal the rear acoustic cavity 10 through glue, or the rear acoustic cavity 10 may be sealed by other structures.
  • the boss 6 is formed by extending the side wall 4 into the rear acoustic cavity 101. Specifically, the boss 6 is formed by extending the rear housing extension wall 51 or the base extension wall 43 into the rear acoustic cavity 101.
  • the boss 6 is spaced apart from the sounding monomer 20, and the air-permeable isolating member 7 is fixed on the side of the boss 6 close to the sounding monomer 20.
  • the fixed position of the air-permeable spacer 7 can also be arranged on the other side of the boss 6. Specifically, the end of the sound-producing monomer 20 away from the diaphragm 21 and the convex
  • the platform 6 is fixedly connected, and the air-permeable isolator 7 is fixed on the side of the boss 6 away from the sound emitting unit 20.
  • the boss 6 is formed by extending the base 4. Specifically, the boss 6 is formed by extending the base extension wall 43 into the rear acoustic cavity 101. More preferably, the base extension wall 43 and the boss 6 are integrally formed.
  • This structure facilitates the assembly of the sound generating device 100 and makes the assembly efficiency high. Of course, it is not limited to this.
  • the boss 6 is formed by extending the rear shell 5. Specifically, the boss 6 is formed by extending the rear housing extension wall 51 into the rear acoustic cavity 101. More preferably, the rear shell 5, the rear shell extension wall 51 and the boss 6 are integrally formed.
  • the boss 6 and the rear shell 5 are arranged in parallel. This structure enables the air-permeable spacer 7 to be assembled and fixed to the boss 6 parallel to the rear shell 5, so that the powder filling space 102 has a large volume, is easy to assemble, and improves assembly efficiency.
  • the air-permeable spacer 7 is received in the rear acoustic cavity 101 and fixed to the boss 6.
  • the air-permeable spacer 7, the housing 10, and the boss 6 jointly enclose a powder filling space 102.
  • the boss 6, the housing 10, and the air-permeable spacer 7 are far away
  • One side of the diaphragm 21 collectively encloses the powder filling space 102.
  • the powder filling space 102 is filled with sound-absorbing particles 8, and the powder filling space 102 effectively connects the sound-absorbing particles 8 with the basin frame 1, the vibration system 2 and the magnetic circuit through the air-permeable spacer 7.
  • the system 3 is isolated, and this structure forms a DBASS virtual acoustic cavity in the rear acoustic cavity 101, which is used to improve the low-frequency acoustic performance of the sound emitting device 100.
  • the powder filling hole 53 is in communication with the powder filling space 102, the sound-absorbing particles 8 are poured into the powder filling space 102 through the powder filling hole 53, and then the powder filling hole 53 is passed through the sealing The cover 54 is closed.
  • This structure is conducive to making full use of the internal space of the rear acoustic cavity 101, and the assembly is simple, and the powder can be filled first and then assembled, which reduces the risk of scrapping due to poor materials.
  • the sound-absorbing particles 8 are zeolite particles.
  • the air-permeable spacer 7 and the basin frame 1 are spaced apart. This structure facilitates assembly.
  • the air-permeable spacer 7 is a mesh cloth.
  • the breathable spacer 7 is made of decabromodiphenyl ethane (TDE for short). Decabromodiphenylethane is a broad-spectrum additive flame retardant with a wide range of applications. It has high bromine content, good thermal stability, and good UV resistance.
  • the air-permeable spacer 7 and the boss 6 are glued and fixed.
  • other methods such as buckle, clip fixing, etc., which can fix the air-permeable spacer 7 and the boss 6 can be adopted.
  • the base 4, the rear shell 5, and the boss 6 may be made of materials such as metal, glass, and ceramics.
  • the boss 6 is respectively fixed to the base extension wall 43 and the rear housing extension wall 51 by welding or glueing to form a seal.
  • both the base 4 and the rear shell 5 are made by stretching a 0.15mm thick steel sheet.
  • the materials of the base 4 and the rear shell 5 are not limited to this, and may also be other materials, such as plastic, glass, ceramics, and the like.
  • Both the base extension wall 43 and the rear shell extension wall 51 are spaced apart from the basin frame 1 to increase the volume of the rear acoustic cavity 101 and further improve the acoustic performance. Specifically, the ratio of the distance between the base extension wall 43 and the basin frame 1 to the thickness of the base extension wall 43 is less than or equal to 1/3.
  • the distance between the base extension wall 43 and the basin frame 1 is less than or equal to 0.05 mm.
  • the distance between the rear shell extension wall 51 and the basin frame 1 is also less than or equal to 0.05 mm.
  • the thickness of the base extension wall 43 and the rear shell extension wall 51 are both set to 0.15 mm.
  • the distance between the base extension wall 43 and the basin frame 1 and the distance between the rear shell extension wall 51 and the basin frame 1 are both set to 0.05 mm.
  • the area ratio of the orthographic projection of the sounding monomer 20 to the rear shell 5 along the vibration direction of the diaphragm 21 to the rear shell 5 is at least 2/3.
  • This structure can make the size of the sound generating device 100 perpendicular to the vibration direction as small as possible, which satisfies the requirements of forming the acoustic cavity 101 to achieve vibration absorption and improve low-frequency acoustic performance, and it is more convenient to install in products with small lateral dimensions in the assembly space.
  • the housing 510 is made of a metal material, such as steel, iron, copper, etc., for example, the housing 510 is made of a steel sheet with a thickness of 0.15 mm.
  • the housing 510 is made of metal material and can be made thinner with the same structural strength, thereby further reducing the horizontal size of the sound emitting device 500 perpendicular to the vibration direction.
  • This embodiment also includes a conductive member 9.
  • the sounding device 500 further includes a conductive member 9, one end of the conductive member 9 is connected to the housing 510, and the other end of the conductive member 9 is used for grounding, thereby forming a screen function, so that the sounding unit 500 avoids external electromagnetic interference and has better working reliability.
  • FIG. 8 is a schematic diagram of a three-dimensional structure of another derivative embodiment of FIG.
  • the rear shell 650 is formed to extend in a direction away from the basin frame, and is located on the outer side of the housing 610.
  • FIG. 9 is a three-dimensional structure diagram of another embodiment of adding conductive elements of the sound device of the present invention.
  • the difference between this embodiment and the embodiment shown in FIG. 7 lies in the structure and function of the conductive member.
  • the sound emitting device 700 further includes a conductive member 709, and the conductive member 709 includes two mutually insulated electrical paths, and one of the electrical paths is used to connect the sound emitting unit 720 and an external electrical signal, It is used to supply power to the sound emitting unit 720, and the other electrical channel is used to connect the housing 710 and the ground to form a shield for the sound emitting unit 720.
  • the conductive member 709 is used to jointly form a shielding effect with the housing 710, and is also used to supply power to the sound emitting unit 720, which has a simpler structure and can achieve dual functions.
  • the conductive member 709 has an FPC structure. Specifically, as shown in FIGS. 9-10, the conductive member 709 includes a first arm 7091 penetrating through the base extension wall 743 and/or the rear housing extension wall 752. The first arm 7091 extends from opposite ends of the first arm 7091 to the The second arm 7092 extending in the direction of the basin frame 701, the third arm 7094 extending in the direction away from the basin frame 701 from the first wall 7091, and the third arm 7094 extending in the direction away from the basin frame 701 from the first wall 7091 The fourth arm 7094.
  • the first arm 7091 is electrically connected to the housing 710; the second arm 7092 is fixed to the basin frame 701 and is electrically connected to the sound emitting unit 720 to supply power to the sound emitting unit 720; the third arm 7093 Used for connecting external electrical signals; the fourth arm 7094 is used for grounding. That is, the first arm 7091 and the fourth arm 7094 jointly connect the housing 710 with the ground to form an electrical path for shielding the sound emitting unit 720; the first arm 7091, the second arm 7092, and The third arm 7093 jointly realizes the electrical connection between the sound emitting unit 720 and the external electrical signal, and is realized as another electrical path through which the sound emitting unit 720 communicates with the external electrical signal.
  • FIG. 11 is an exploded schematic diagram of the three-dimensional structure of another embodiment of adding a conductive element to the sound device of the present invention.
  • the sound emitting device 800 further includes a conductive terminal 809, the conductive terminal is fixed to the basin frame 801 and is connected to the sounding monomer 820, and the rear shell 805 is also provided with a through hole.
  • the conductive terminal 809 is at least partially located in the electrical connection hole 8010 and exposed to the rear shell 805 for electrical connection with an external circuit.
  • the sound generating device 800 is formed to realize power connection along the vibration direction, which avoids occupying the lateral space of the sound generating device 800 perpendicular to the vibration direction, and is more conducive to being applied to terminals with a small assembly space.
  • FIG. 12 it is a schematic structural diagram of an embodiment in which side sound is formed on the basis of the embodiment shown in FIG. 3. That is to say, the sound-producing device forms a sound-producing structure from the front side.
  • the sound-emitting device 100 includes a sound-conducting shell 14 covering a side of the sound-emitting monomer 20 away from the rear shell 5, and the sound-conducting shell 14 has a sound-guiding cavity 103 forming a side sound-emitting structure 140, so The sound guide cavity 103 is in communication with the diaphragm 21.
  • the side sound structure 140 can better guide sound, which is convenient for use when the front sound is blocked, and has higher flexibility in use.
  • the sound guide shell 14 and the diaphragm 21 jointly enclose a sound guide cavity 103.
  • the sound guide shell 14 includes a sound guide shell plate 141 spaced and opposed to the diaphragm 21, and a peripheral edge of the sound guide shell plate 141 bends and extends toward the sound emitting unit 20 and is supported and fixed to the sound-producing unit 20.
  • the sound-conducting shell extension wall 142 on the periphery of the sound-emitting unit 20 is provided through the sound-conducting shell extension wall 142 to form a side sounding structure, which is convenient for flexible use of different installation positions.
  • the communication between the sound guide cavity 103 and the diaphragm 21 may be direct or indirect communication.
  • a front acoustic cavity is provided on the diaphragm 21, that is, the diaphragm 21 communicates with the sound guide cavity 103 through the front sound cavity.
  • the sound conducting shell 14 is a component of the sound emitting device 100 and does not belong to the housing 1.
  • the sound conducting shell 14 When the sound conducting shell 14 is understood as a part of the shell 10, it is also feasible, that is, the sound conducting shell 14 may be a part of the shell 10. In this case, it is the shell 10 and the sound emitting monomer. 20 also encloses a sound guide cavity 103 forming a side sounding structure, and the sound guide cavity 103 is in communication with the diaphragm 21.
  • FIG. 13 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 3.
  • the side of the air-permeable isolator 9007 close to the sound emitting unit 9020 is recessed in a direction away from the sound emitting unit 9020 to form an avoiding step 9070, and the avoiding step 9070 is in line with the leakage portion 9030. Pair set.
  • This structural arrangement can make the leakage of the sounding cavity 9103 of the sounding unit 9020 smoother, thereby improving the sounding performance.
  • FIG. 14 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 1.
  • the sound emitting device 1000 further includes at least two positioning pieces 88 which are connected to the housing 1001 respectively.
  • the positioning piece 88 is provided with a positioning hole 881 passing through it at one end away from the housing 1001, which is used to fix and position the sound emitting device 1000 and the application terminal. For example, it is a threaded hole.
  • the hole 881 is fixed on the whole terminal device, which is simple and convenient, and the positioning piece 88 is provided with at least two positioning pieces 88 to form a positioning fixation more effectively.
  • the positioning pieces 88 are connected to opposite sides or two diagonal corners of the housing 1001, and the symmetrical arrangement makes the sound generating device 1000 and the whole terminal have a better positioning and fixing effect.
  • the positioning piece 88 is fixed to the housing 1001 by welding, that is, the positioning piece 88 and the housing 1001 are a separate structure of two devices.
  • FIG. 15 is a schematic structural diagram of a derivative embodiment of the embodiment shown in FIG. 14.
  • the difference from the embodiment shown in FIG. 13 is that in the sound emitting device 1100 in this embodiment, the positioning piece 11188 is formed by extending outward from the housing 1111, that is, the positioning piece 11188 and the housing 1111 are integrally formed
  • the structure is simple, the number of components is reduced, and the assembly efficiency is improved.
  • a boss formed by designing the shell extending in the direction of the basin frame, so that the shell, the boss, and the sound emitting unit collectively surround the rear Acoustic cavity, the above structure forms a closed back acoustic cavity structure, which is not only simple in structure, and the overall horizontal dimension along the vibration direction perpendicular to the diaphragm is small, but also the closed back acoustic cavity structure enables the shell to absorb vibration, thereby making the sound After the device is applied to the mobile terminal, the occurrence of case vibration is avoided, and the user experience effect is better.
  • the sound device of the present invention uses a boss formed on the housing to extend into the rear acoustic cavity, and fixes the air-permeable spacer to the boss, so that the air-permeable spacer, the air-permeable spacer and the The shell and the boss jointly enclose a powder filling space, and the sound-absorbing particles are filled in the powder filling space to form a DBASS virtual sound cavity, so that the acoustic effect of the sound generating device is better.

Abstract

本实用新型提供了一种发声器件，其包括壳体、固定于壳体的发声单体、凸台以及固定于凸台的透气隔离件，发声单体包括固定于壳体的盆架、分别支撑固定于盆架的振动系统和驱动振动系统振动发声的磁路系统，振动系统包括固定于盆架的振膜；凸台由壳体向盆架的方向延伸形成，壳体、凸台以及发声单体共同围成后声腔，发声单体设有与后声腔连通的泄露部，壳体上设有泄露孔，泄露孔将后声腔与外界连通；凸台由壳体向后声腔内延伸形成；透气隔离件收容于后声腔内，透气隔离件、壳体及凸台共同围成灌粉空间，灌粉空间内填充吸音颗粒。与相关技术相比，本实用新型的发声器件结构简单、声学性能优、用户体验效果好。

Description

发声器件 技术领域
本实用新型涉及电声转换领域，尤其涉及一种运用于便携式移动电子产品的发声器件。
 背景技术
发声器件又名扬声器，广泛运用于便携式移动电子产品中，比如手机，实现将音频信号转化为声音播放，发声器件响度大，振幅度。
相关技术的发声器件包括盆架、分别固定于所述盆架的振动系统和具有磁间隙的磁路系统，所述磁路系统驱动所述振动系统振动发声，所述振动系统包括固定于所述盆架的振膜以及固定于所述振膜并插设于所述磁间隙以驱动所述振膜振动发声的音圈。
 技术问题
然而，相关技术的发声器件因不具有后腔结构或后腔为开放式结构，其运用在手机等便携式移动电子产品中时会引起手机壳振的问题，造成用户体验效果不好；而手机空间尺寸有限，发声器件不能设计成现有技术中的带后腔的扬声器箱结构以克服该问题，同时，发声器件不能在在后腔的基础上形成用于填充吸音颗粒实现DBASS虚拟声腔。
因此，实有必要提供一种新的发声器件解决上述技术问题。
 技术解决方案
本实用新型的目的在于提供一种结构简单、声学性能好、用户体验效果好的发声器件。
为了达到上述目的，本实用新型提供了一种发声器件，其包括壳体、固定于所述壳体的发声单体、凸台以及固定于所述凸台的透气隔离件，所述发声单体包括固定于所述壳体的盆架以及分别支撑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，所述振动系统包括固定于所述盆架的所述振膜；所述凸台由所述壳体向所述盆架的方向延伸形成，所述后壳、所述凸台、所述底座以及所述发声单体共同围成后声腔，所述发声单体设有与所述后声腔连通的泄露部，所述壳体上设有泄露孔，所述泄露孔将所述后声腔与外界连通；所述凸台由所述壳体向所述后声腔内延伸形成；所述透气隔离件收容于所述后声腔内，所述透气隔离件、所述后壳及所述凸台共同围成所述灌粉空间，所述灌粉空间内填充吸音颗粒。
优选的，所述壳体包括位于所述盆架远离所述振膜一侧且与所述发声单体间隔的后壳和由所述后壳的周缘向所述振膜方向延伸的侧壁，所述凸台由所述侧壁向所述后声腔内延伸形成，所述侧壁环绕所述盆架周侧且与所述盆架周侧固定贴合。
优选的，所述壳体包括位于所述盆架远离所述振膜一侧且与所述发声单体间隔的后壳、由所述后壳的周缘向所述振膜方向延伸的侧壁以及自所述侧壁向靠近所述振膜方向弯折延伸的底座板，所述底座板固定于所述盆架靠近所述振膜的一端，所述凸台由所述侧壁向所述后声腔内延伸形成。
优选的，所述侧壁与所述盆架的至少一侧设有间隔，所述间隔小于所述壳体的厚度的3倍。
优选的，所述凸台与所述发声单体间隔设置，所述透气隔离件固定于所述凸台靠近所述发声单体的一侧。
优选的，所述发声单体远离所述振膜的一端与所述凸台固定连接，所述透气隔离件固定于所述凸台远离所述发声单体的一侧。
优选的，所述侧壁包括由所述后壳的周缘向所述振膜方向延伸的后壳延伸壁和沿所述盆架周侧向远离所述后壳的方向延伸且与所述后壳延伸壁抵接的底座延伸壁，所述底座延伸壁与所述底座板连接，所述凸台由所述后壳延伸壁向所述后声腔内延伸形成。
优选的，所述后壳、所述后壳延伸壁和所述凸台一体成型。
优选的，所述侧壁包括由所述后壳的周缘向所述振膜方向延伸的后壳延伸壁和沿所述盆架周侧向远离所述后壳的方向延伸且与所述后壳延伸壁抵接的底座延伸壁，所述底座延伸壁环绕所述盆架周侧且与所述盆架周侧固定贴合，所述凸台由所述底座延伸壁向所述后声腔内延伸形成。
优选的，所述底座延伸壁和所述凸台一体成型。
优选的，所述底座板设有贯穿其上的发声口，所述振膜正对所述发声口设置。
优选的，所述壳体为金属材料制成。
优选的，所述壳体至少部分接地。
优选的，所述发声器件还包括导电件，所述导电件的一端电连接于所述壳体，所述导电件的另一端用于接地。
优选的，所述导电件由所述壳体延伸形成。
优选的，所述发声器件还包括导电件，所述导电件包括两条电性通路，其中一条所述电性通路用于连接所述发声单体与外部电信号，另一条所述电性通道路用于连接所述壳体与地。
优选的，所述发声器件还包括导电端子，所述后壳还设有贯穿其上的接电孔，所述导电端子至少部分位于所述接电孔并外露于所述后壳，用于与外部电路电连接。
优选的，所述壳体采用0.15mm厚的钢片制成。
优选的，所述发声器件包括盖设于所述发声单体远离所述后壳一侧的导声壳，所述导声壳具有形成侧发声结构的导声腔，所述导声腔与所述振膜连通。
优选的，所述壳体与所述发声单体还围成形成侧发声结构的导声腔，所述导声腔与所述振膜连通。
优选的，所述透气隔离件靠近所述发声单体的一侧向远离所述发声单体方向凹陷形成避让台阶，所述避让台阶与所述泄露部正对设置。
优选的，所述发声器件还包括至少两个定位片，所述至少两个定位片连接于所述壳体的相对两侧或两对角处，所述定位片远离所述壳体的一端设有贯穿其上的定位孔。
优选的，所述定位片由所述壳体向外延伸形成。
优选的，所述壳体的厚度与所述盆架的厚度比值小于0.4。
优选的，所述发声单体沿所述振膜的振动方向向所述后壳的正投影与所述后壳的面积比至少为2/3。
 有益效果
与相关技术相比，本实用新型的发声器件中，通过设计壳体向盆架的方向延伸形成的凸台，从而使得所述壳体、所述凸台以及所述发声单体共同围成后声腔，上述结构形成了密闭的后声腔结构，不仅结构简单、整体沿垂直于所述振膜的振动方向的水平尺寸增加小，而且密闭的后声腔结构使得壳体可用于吸振，从而使得该发声器件运用于移动终端后避免了壳振现象的产生，使得用户体验效果更好。更优的，本实用新型的发声器件通过在所述壳体向所述后声腔内延伸形成的凸台，并将透气隔离件固定于所述凸台，从而使得所述透气隔离件、所述壳体及所述凸台共同围成灌粉空间，并将吸音颗粒填充于所述灌粉空间内形成DBASS虚拟声腔，从而使得发声器件的声学效果更优。
 附图说明
为了更清楚地说明本实用新型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实用新型的一些实施例，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为本实用新型发声器件的立体结构示意图；
图2为本实用新型发声器件的部分立体结构分解示意图；
图3为沿图1中A-A线的剖示图；
图4为图3中B所示部分放大图；
图5为图3的另一种实施方式的剖示图；
图6为图5的C所示部分放大图；
图7为本实用新型发声器件的另一实施方式的立体结构示意图；
图8为图7的另一种衍生实施方式的立体结构示意图；
图9为本实用新型发声器件的增加导电件的另一实施方式的立体结构示意图；
图10为图9的部分立体结构分解图；
图11为本实用新型发声器件增加导电件的另一实施方式的立体结构分解示意图；
图12为图3中的外壳形成侧发声结构的实施方式的结构示意图；
图13为图3所示实施方式的衍生实施方式结构示意图；
图14为图1所示发声器件增加定位片的实施方式结构示意图；
图15为图14所示实施方式的衍生实施方式结构示意图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型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实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，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，都属于本实用新型保护的范围。
请同时参阅图1-4，本实用新型提供了一种发声器件100，其包括壳体10、固定于所述壳体10的发声单体20、凸台6以及透气隔离件7。
所述发声单体20包括盆架1、振动系统2和磁路系统3。
所述盆架1固定于所述壳体10。
所述振动系统2和所述磁路系统3分别支撑固定于所述盆架1并共同围成发声内腔103，所述磁路系统3驱动所述振动系统2振动发声。
所述振动系统2包括固定于所述盆架1的振膜21。
所述壳体10包括位于所述盆架1远离所述振膜21一侧且与所述发声单体20间隔的后壳5和由所述后壳5的周缘向所述振膜21方向延伸的侧壁4。
所述壳体10、所述凸台6以及所述发声单体20共同围成后声腔101。具体的，所述后壳5、所述凸台6、所述侧壁4、所述盆架1及所述磁路系统3共同围成所述后声腔101。
本实施方式中，所述壳体10厚度与所述盆架1的厚度比值小于0.4，从而在满足壳体10的结构强度的同时，尽可能小的增加发声器件100沿垂直于振动方向的尺寸；而且也使得盆架1的结构强度得到保障的同时尽可能少的占用空间体积。
所述侧壁4环绕所述盆架1周侧。具体的，所述侧壁4包括由所述后壳5的周缘向所述振膜21方向延伸的后壳延伸壁51和沿所述盆架1周侧向远离所述后壳5的方向延伸且与所述后壳延伸壁51抵接的底座延伸壁43。其中，所述凸台6由所述侧壁4向所述盆架1的方向延伸形成。
本实施方式中，具体的，所述后壳延伸壁51沿振膜21的振动方向延伸，底座延伸壁43沿振膜21的振动方向延伸，在其两者延伸的末端相互抵接，抵接位置处可采用密封件等手段密封或所述后壳延伸壁51和所述底座延伸壁43固定连接形成密封。
如图3-图4所示，为本实用新型的一种实施方式。其中，所述凸台6由所述底座延伸壁43向所述盆架1的方向延伸形成，所述发声单体20可由所述底座延伸壁43向所述凸台6的方向插入装配。所述发声单体20与所述凸台6固定连接，此时，透气隔离件7贴设于所述凸台6远离所述发声单体20的一侧。其中，所述发声单体20可以间隔设置于所述侧壁4也可以贴合固定于所述侧壁4。更优选的，所述发声单体20固定于所述侧壁4，能够进一步的提高发声器件100的跌落性能。具体的，所述侧壁4与所述盆架1周侧固定贴合。一方面，所述底座延伸壁43环绕所述盆架1周侧且与所述盆架1周侧固定贴合，另一方面，所述盆架1靠近磁路系统一侧与所述凸台6固定连接，该结构有利于提高发声器件100跌落性能。
如图5-图6所示，为本实用新型的另一种实施方式。发声器件100A还包括自所述侧壁4A向靠近所述振膜21A方向弯折延伸的底座板41。所述底座板41固定于所述盆架1A靠近所述振膜21A的一端。所述底座延伸壁43A与所述底座板41连接，所述底座板41设有贯穿其上的发声口42，所述振膜21A正对所述发声口42设置，形成正面发声结构。所述发声单体20A固定于所述底座板41，此时，所述凸台6A由所述后壳延伸壁51A向所述盆架1A的方向延伸形成，所述发声单体20A可由所述后壳延伸壁51A向所述底座延伸壁43A的方向插入装配。由于所述底座板41固定于所述盆架1A，对所述发声单体20A起到支撑作用，故所述凸台6A无需与所述发声单体20A固定连接，此时，所述凸台6A靠近所述盆架1A的一侧贴合固定所述透气隔离件7A，可以进一步的扩大Dbass腔，改善声学性能。所述发声单体20A可以间隔设置于所述侧壁4A，也可以贴合固定于所述侧壁4A。在本实施方式中，更优选的，所述发声单体20A与所述侧壁4A间隔设置，该结构在保证跌落性能的同时扩大了后声腔101A。其中，本实施方式中，
上述两种实施方式，后声腔101与后声腔101A密闭空间不同。如图5-图6所示，由于所述发声单体20A固定于所述底座板41上，发声器件100A的跌落性能能够得到保证，而所述发声单体20A与所述侧壁4A间隔设置，其后声腔101A密封空间更大。而如图3-图4所示，所述发声单体20的装配方式更加灵活，且对发声口42的设计也更加灵活。但两种实施方式都是本领域技术人员根据实际需求可选的，且其中的各部件间的配合也是根据实际需求可组合运用的。
所述发声单体20设有与所述后声腔连通的泄露部30。所述泄露部30与所述后声腔101连通，从而通过所述泄露部30将所述发声内腔103与所述后声腔101连通，用以改善低频声学性能。
所述壳体10上设有泄露孔104，所述泄露孔104将所述后声腔101与外界连通，用于平衡声压。
至此，本实用新型的上述发声器件100则形成了封闭的后声腔结构，其结构简单，一方面改善了发声器件100的声学性能，特别是低频声学性能，另一方面因后声腔101结构的存在，使得所述发声器件100运用于移动终端等电子产品中后不会使移动终端等电子产品产生壳振现象，有效增加了客户的用户体验效果。
同理，本实用新型的上述发声器件100A则形成了封闭的后声腔结构，其结构简单，一方面改善了发声器件100A的声学性能，特别是低频声学性能，另一方面因后声腔101A结构的存在，使得所述发声器件100A运用于移动终端等电子产品中后不会使移动终端等电子产品产生壳振现象，有效增加了客户的用户体验效果。
本实施方式中，所述侧壁4与所述盆架1的至少一侧设有间隔105，所述间隔105小于所述壳体10的厚度的3倍。该间隔105可使得发声单体20更快捷装配至壳体10中，提高装配效率，同时也不会更多占用发声器件100在垂直于所述振动方向所占用的横向空间。另外，上述间隔105还可用以增加后声腔101的体积，进一步改善声学性能，本实施方式中，所述间隔105小于或等于所述振膜21固定于所述盆架1的固定面（胶合面）的宽度的1/3。
同理，本实施方式中，所述侧壁4A与所述盆架1A的至少一侧设有间隔105A，所述间隔105A小于所述壳体10A的厚度的3倍。该间隔105A可使得发声单体20A更快捷装配至壳体10A中，提高装配效率，同时也不会更多占用发声器件100A在垂直于所述振动方向所占用的横向空间。另外，上述间隔105A还可用以增加后声腔101A的体积，进一步改善声学性能，本实施方式中，所述间隔105A小于或等于所述振膜21A固定于所述盆架1A的固定面（胶合面）的宽度的1/3。
此时，所述侧壁12与盆架21可通过打胶形成密封所述后声腔10  ，也可以通过其它结构实现后声腔10的密封。
所述凸台6由所述侧壁4向所述后声腔101内延伸形成。具体的，所述凸台6由所述后壳延伸壁51或所述底座延伸壁43向所述后声腔101内延伸形成。
所述凸台6与所述发声单体20间隔设置，所述透气隔离件7固定于所述凸台6靠近所述发声单体20的一侧。当然，不限于此，所述透气隔离件7的固定位置还可以设置于所述凸台6的另外一侧，具体的，所述发声单体20远离所述振膜21的一端与所述凸台6固定连接，所述透气隔离件7固定于所述凸台6远离所述发声单体20的一侧。
本实施方式中，所述凸台6由所述底座4延伸形成。具体的，所述凸台6由所述底座延伸壁43向所述后声腔101内延伸形成。更优的，所述底座延伸壁43和所述凸台6一体成型。该结构有利于所述发声器件100组装、使得组装效率高。当然，不限于此，请参考图6所示，在另一个实施方式中，所述凸台6由所述后壳5延伸形成。具体的，所述凸台6由所述后壳延伸壁51向所述后声腔101内延伸形成。更优的，所述后壳5、所述后壳延伸壁51和所述凸台6一体成型。
更优的，所述凸台6与所述后壳5平行设置。该结构使得所述透气隔离件7组装固定于所述凸台6平行于所述后壳5，从而使得所述灌粉空间102的体积大，也易于组装，提高组装效率。
所述透气隔离件7收容于所述后声腔101内并固定于所述凸台6。所述透气隔离件7、所述壳体10及所述凸台6共同围成灌粉空间102，本实施方式中，所述凸台6、所述壳体10以及所述透气隔离件7远离所述振膜21的一侧共同围成所述灌粉空间102。所述灌粉空间102内填充吸音颗粒8，所述灌粉空间102通过所述透气隔离件7有效地将所述吸音颗粒8与所述盆架1、所述振动系统2及所述磁路系统3隔离，并且该结构在所述后声腔101内形成DBASS虚拟声腔，用于提高所述发声器件100的低频声学性能。另外，所述灌粉孔53与所述灌粉空间102连通，所述吸音颗粒8由所述灌粉孔53灌入所述灌粉空间102，再将所述灌粉孔53通过所述密封盖54盖设封闭。该结构有利于充分利用所述后声腔101的内部空间，而且装配简单，可以先灌粉后装配，降低材料不良的报废风险。本实施方式中，所述吸音颗粒8为沸石颗粒。
本实施方式中，所述透气隔离件7与所述盆架1间隔设置。该结构有利于组装。
本实施方式中，所述透气隔离件7为网布。具体的，所述透气隔离件7为十溴二苯乙烷（简称TDE）制成。十溴二苯乙烷是一种使用范围广泛的广谱添加型阻燃剂,其溴含量高,热稳定性好,抗紫外线性能佳。
本实施方式中，所述透气隔离件7与所述凸台6为胶合固定。当然，不限于此，其他方式，如卡扣、夹设固定等能将所述透气隔离件7与所述凸台6固定的方式都可以采用。
本实施方式中，所述底座4、所述后壳5及所述凸台6可为金属、玻璃、陶瓷等材料制成。
所述凸台6分别与所述底座延伸壁43和所述后壳延伸壁51通过焊接或打胶固定以形成密封。
具体的，所述底座4和所述后壳5均用0.15mm厚的钢片拉伸制成。当然，所述底座4和所述后壳5的材料不限于此，也可为其它材料，比如塑料、玻璃、陶瓷等。
所述底座延伸壁43及所述后壳延伸壁51均与所述盆架1间隔设置，用以增加所述后声腔101的体积，进一步改善声学性能。具体的，所述底座延伸壁43至所述盆架1之间的间距与所述底座延伸壁43的厚度的比值小于或等于1/3。
比如，所述底座延伸壁43至所述盆架1之间的间距小于或等于0.05mm，同理，所述后壳延伸壁51与所述盆架1之间的间距也小于或等于0.05mm。所述底座延伸壁43和所述后壳延伸壁51的厚度均设为0.15mm。
本实施方式中，所述底座延伸壁43与所述盆架1之间的间距和所述后壳延伸壁51与所述盆架1之间间距均设为0.05mm。该结构设置后，在保证底座4和后壳5的结构强度稳定性的情况下，所述发声器件100沿垂直于所述振膜21振动方向的单侧增加尺寸相对最小，单侧仅增加尺寸仅0.2mm，不影响期运用于便携式移动终端电子产品内。
本实施方式中，所述发声单体20沿所述振膜21的振动方向向所述后壳5的正投影与所述后壳5的面积比至少为2/3。该结构可使得发声器件100在其垂直于振动方向的尺寸尽可能小，满足形成后声腔101实现吸振、提高低频声学性能的同时，更便于安装于装配空间横向尺寸小的产品。
请结合图7所示图，为本实用新型发声器件的增加导电件的实施方式的立体结构示意图。所述发声器件500中，所述壳体510为金属材料制成，如钢、铁、铜等，比如，所述壳体510均用0.15mm厚的钢片制成。
壳体510通过金属材料制成可在同样结构强度的情况下，做到更薄，从而进一步减小发声器件500的沿垂直于振动方向的水平尺寸。其与图1所示实施方式的主要区别点在于：该实施方式中还包括设置导电件9。
具体的，所述发声器件500还包括导电件9，所述导电件9的一端连接于所述壳体510，所述导电件9的另一端用于接地，从而形成屏作用，使得发声单体500避免受外界电磁干扰，工作可靠性更好。
请结合图8，为图7的另一种衍生实施方式的立体结构示意图，即所述发声器件600中，所述导电件609与壳体610为一体结构，比如，所述导电件609由所述后壳650向远离所述盆架的方向延伸形成，位于壳体610的外侧。
请结合图9所示，为本实用新型发声器件的增加导电件的另一实施方式的立体结构示意图。该实施方式与图7所示的实施方式区别在于，导电件的结构和功能不同。
具体的，所述发声器件700还包括导电件709，所述导电件709包括两条相互绝缘的电性通路，其中一条所述电性通路用于连接所述发声单体720与外部电信号，用于为发声单体720供电，另一条所述电性通道路用于连接所述壳体710与地，形成对发声单体720的屏蔽。本实施例中，导电件709则即用于与壳体710共同形成屏蔽作用，而且还用于为发声单体720供电，结构更简单且能实现双重功能。
比如导电件709为一FPC结构。具体如图9-10所示，所述导电件709包括贯穿所述底座延伸壁743和/或后壳延伸壁752的第一臂7091、由所述第一臂7091的相对两端向所述盆架701方向延伸的第二臂7092、由所述第一壁7091向远离所述盆架701方向延伸的第三臂7094以及由所述第一壁7091向远离所述盆架701方向延伸的第四臂7094。
所述第一臂7091与所述壳体710电连接；所述第二臂7092固定于所述盆架701并与发声单体720电连接，为发声单体720供电；所述第三臂7093用于连接外部电信号；所述第四臂7094用于接地。即第一臂7091和第四臂7094共同实现将所述壳体710与地连接，形成对发声单体720实现屏蔽的一条电性通路；所述第一臂7091、所述第二臂7092以及所述第三臂7093共同实现将发声单体720与外部电信号电连接，实现为发声单体720与外部电信号连通的另一条电性通路。
请结合图11所示，为本实用新型发声器件增加导电件的另一实施方式的立体结构分解示意图。其与图1所示实施方式的区别在于：所述发声器件800还包括导电端子809，所述导电端子固定于所述盆架801并与发声单体820，所述后壳805还设有贯穿其上的接电孔8010，所述导电端子809至少部分位于所述接电孔8010并外露于所述后壳805，用于与外部电路电连接。从而形成发声器件800沿振动方向实现接电，避免了占用发声器件800的垂直于振动方向的横向空间，更利于运用于装配空间小的终端。
如图12所示，为在图3所示实施方式基础上形成侧发声的实施方式的结构示意图。即将发声器件由正面发声形成侧面发声结构。
具体的，所述发声器件100包括盖设于所述发声单体20远离所述后壳5一侧的导声壳14，所述导声壳14具有形成侧发声结构140的导声腔103，所述导声腔103与所述振膜21连通。该侧发声结构140可更好的引导发声，便于正面发声被挡的情况下使用，使用灵活性更高。
比如，所述导声壳14及所述振膜21共同围成导声腔103。具体的，所述导声壳14包括与所述振膜21间隔相对的导声壳板141以及由所述导声壳板141的周缘向所述发声单体20弯折延伸并支撑固定于所述发声单体20周缘的导声壳延伸壁142，所述导声壳延伸壁142贯穿所述导声壳延伸壁142设置，从而形成侧发声结构，便于安装位置不同的灵活运用。
需要说明的是，导声腔103与振膜21连通可以是直接连通，也可以使间接连通的，比如振膜21上设置一个前声腔，即振膜21经该前声腔再声导声腔103连通，这是本领域技术人员容易理解的。此时，理解为导声壳14为发声器件100的一个器件，而不属于壳体1。
当将导声壳14理解为壳体10的一部分，这也是可行的，即所述导声壳14可以是壳体10的一部分，此时，则为所述壳体10与所述发声单体20还围成形成侧发声结构的导声腔103，所述导声腔103与所述振膜21连通。
请结合图13所示，为图3所示实施方式的衍生实施方式结构示意图。所述发声器件900中，所述透气隔离件9007靠近所述发声单体9020的一侧向远离所述发声单体9020方向凹陷形成避让台阶9070，所述避让台阶9070与所述泄露部9030正对设置。该结构设置可使发声单体9020的发声内腔9103的泄露更顺畅，从而改善发声性能。
请结合图14所示，为图1所示实施方式的衍生实施方式结构示意图。所述发声器件1000还包括至少两个定位片88并分别与壳体1001连接。所述定位片88远离所述壳体1001的一端设有贯穿其上的定位孔881，用于将发声器件1000与运用终端整机固定定位，比如为螺纹孔，使用螺钉则可通过所述定位孔881固定在终端整机，简单方便，而定位片88设置至少两个可更有效的形成定位固定。为了进一步提高固定稳定性，至少两个所述定位片88连接于所述壳体1001的相对两侧或两对角处，对称设置使发声器件1000与终端整机定位固定效果更优。本实施方式中，定位片88通过焊接固定于壳体1001，即定位片88与壳体1001为两个器件的分体结构。
请结合图15所示，为图14所示实施方式的衍生实施方式结构示意图。其与图13所示实施方式的区别在于，本实施方式中的发声器件1100中，所述定位片11188中由所述壳体1111向外延伸形成，即定位片11188与壳体1111为一体成型结构，成型简单，减少器件数量，提高装配效率。
与相关技术相比，本实用新型的发声器件中，通过设计壳体向盆架的方向延伸形成的凸台，从而使得所述壳体、所述凸台以及所述发声单体共同围成后声腔，上述结构形成了密闭的后声腔结构，不仅结构简单、整体沿垂直于所述振膜的振动方向的水平尺寸增加小，而且密闭的后声腔结构使得壳体可用于吸振，从而使得该发声器件运用于移动终端后避免了壳振现象的产生，使得用户体验效果更好。更优的，本实用新型的发声器件通过在所述壳体向所述后声腔内延伸形成的凸台，并将透气隔离件固定于所述凸台，从而使得所述透气隔离件、所述壳体及所述凸台共同围成灌粉空间，并将吸音颗粒填充于所述灌粉空间内形成DBASS虚拟声腔，从而使得发声器件的声学效果更优。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。

Claims (25)

  1. 一种发声器件，其包括壳体和固定于所述壳体的发声单体，所述发声单体包括固定于所述壳体的盆架以及分别支撑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，所述振动系统包括固定于所述盆架的所述振膜；其特征在于，所述发声器件还包括由所述壳体向所述盆架的方向延伸形成的凸台和固定于所述凸台的透气隔离件，所述壳体、所述凸台以及所述发声单体共同围成后声腔，所述发声单体设有与所述后声腔连通的泄露部，所述壳体上设有泄露孔，所述泄露孔将所述后声腔与外界连通；所述凸台由所述壳体向所述后声腔内延伸形成；所述透气隔离件收容于所述后声腔内，所述透气隔离件、所述壳体及所述凸台共同围成所述灌粉空间，所述灌粉空间内填充有吸音颗粒。
  2. 根据权利要求1所述的发声器件，其特征在于，所述壳体包括位于所述盆架远离所述振膜一侧且与所述发声单体间隔的后壳和由所述后壳的周缘向所述振膜方向延伸的侧壁，所述凸台由所述侧壁向所述后声腔内延伸形成，所述侧壁环绕所述盆架周侧且与所述盆架周侧固定贴合。
  3. 根据权利要求1所述的发声器件，其特征在于，所述壳体包括位于所述盆架远离所述振膜一侧且与所述发声单体间隔的后壳、由所述后壳的周缘向所述振膜方向延伸的侧壁以及自所述侧壁向靠近所述振膜方向弯折延伸的底座板，所述底座板固定于所述盆架靠近所述振膜的一端，所述凸台由所述侧壁向所述后声腔内延伸形成。
  4. 根据权利要求3所述的发声器件，其特征在于，所述侧壁与所述盆架的至少一侧设有间隔，所述间隔小于所述壳体的厚度的3倍。
  5. 根据权利要求2或3所述的发声器件，其特征在于，所述凸台与所述发声单体间隔设置，所述透气隔离件固定于所述凸台靠近所述发声单体的一侧。
  6. 根据权利要求2或3所述的发声器件，其特征在于，所述发声单体远离所述振膜的一端与所述凸台固定连接，所述透气隔离件固定于所述凸台远离所述发声单体的一侧。
  7. 根据权利要求3所述的发声器件，其特征在于，所述侧壁包括由所述后壳的周缘向所述振膜方向延伸的后壳延伸壁和沿所述盆架周侧向远离所述后壳的方向延伸且与所述后壳延伸壁抵接的底座延伸壁，所述底座延伸壁与所述底座板连接，所述凸台由所述后壳延伸壁向所述后声腔内延伸形成。
  8. 根据权利要求7所述的发声器件，其特征在于，所述后壳、所述后壳延伸壁和所述凸台一体成型。
  9. 根据权利要求2所述的发声器件，其特征在于，所述侧壁包括由所述后壳的周缘向所述振膜方向延伸的后壳延伸壁和沿所述盆架周侧向远离所述后壳的方向延伸且与所述后壳延伸壁抵接的底座延伸壁，所述底座延伸壁环绕所述盆架周侧且与所述盆架周侧固定贴合，所述凸台由所述底座延伸壁向所述后声腔内延伸形成。
  10. 根据权利要求9所述的发声器件，其特征在于，所述底座延伸壁和所述凸台一体成型。
  11. 根据权利要求3所述的发声器件，其特征在于，所述底座板设有贯穿其上的发声口，所述振膜正对所述发声口设置。
  12. 根据权利要求1所述的发声器件，其特征在于，所述壳体为金属材料制成。
  13. 根据权利要求12所述的发声器件，其特征在于，所述壳体至少部分接地。
  14. 根据权利要求12所述的发声器件，其特征在于，所述发声器件还包括导电件，所述导电件的一端电连接于所述壳体，所述导电件的另一端用于接地。
  15. 根据权利要求14所述的发声器件，其特征在于，所述导电件由所述壳体延伸形成。
  16. 根据权利要求12所述的发声器件，其特征在于，所述发声器件还包括导电件，所述导电件包括两条电性通路，其中一条所述电性通路用于连接所述发声单体与外部电信号，另一条所述电性通道路用于连接所述壳体与地。
  17. 根据权利要求2或3所述的发声器件，其特征在于，所述发声器件还包括导电端子，所述后壳还设有贯穿其上的接电孔，所述导电端子至少部分位于所述接电孔并外露于所述后壳，用于与外部电路电连接。
  18. 根据权利要求1所述的发声器件，其特征在于，所述壳体采用0.15mm厚的钢片制成。
  19. 根据权利要求2或3所述的发声器件，其特征在于，所述发声器件包括盖设于所述发声单体远离所述后壳一侧的导声壳，所述导声壳具有形成侧发声结构的导声腔，所述导声腔与所述振膜连通。
  20. 根据权利要求1所述的发声器件，其特征在于，所述壳体与所述发声单体还围成形成侧发声结构的导声腔，所述导声腔与所述振膜连通。
  21. 根据权利要求1所述的发声器件，其特征在于，所述透气隔离件靠近所述发声单体的一侧向远离所述发声单体方向凹陷形成避让台阶，所述避让台阶与所述泄露部正对设置。
  22. 根据权利要求13所述的发声器件，其特征在于，所述发声器件还包括至少两个定位片，所述至少两个定位片连接于所述壳体的相对两侧或两对角处，所述定位片远离所述壳体的一端设有贯穿其上的定位孔。
  23. 根据权利要求22所述的发声器件，其特征在于，所述定位片由所述壳体向外延伸形成。
  24. 根据权利要求1所述的发声器件，其特征在于，所述壳体的厚度与所述盆架的厚度比值小于0.4。
  25. 根据权利要求3所述的发声器件，其特征在于，所述发声单体沿所述振膜的振动方向向所述后壳的正投影与所述后壳的面积比至少为2/3。
PCT/CN2020/094707 2020-05-29 2020-06-05 发声器件 WO2021237793A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202020964644.3 2020-05-29
CN202020964644.3U CN212628371U (zh) 2020-05-29 2020-05-29 发声器件

Publications (1)

Publication Number Publication Date
WO2021237793A1 true WO2021237793A1 (zh) 2021-12-02

Family

ID=74750165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/094707 WO2021237793A1 (zh) 2020-05-29 2020-06-05 发声器件

Country Status (2)

Country Link
CN (1) CN212628371U (zh)
WO (1) WO2021237793A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113507672A (zh) * 2021-06-30 2021-10-15 歌尔股份有限公司 非等声阻网布和发声器件

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206575596U (zh) * 2017-03-23 2017-10-20 江西联创宏声电子股份有限公司 扬声器模组
CN207124746U (zh) * 2017-07-24 2018-03-20 歌尔科技有限公司 扬声器单体以及电子设备
CN108235198A (zh) * 2018-02-24 2018-06-29 歌尔股份有限公司 一种扬声器模组及电子设备
CN108307279A (zh) * 2018-01-29 2018-07-20 瑞声科技(新加坡)有限公司 扬声器箱

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206575596U (zh) * 2017-03-23 2017-10-20 江西联创宏声电子股份有限公司 扬声器模组
CN207124746U (zh) * 2017-07-24 2018-03-20 歌尔科技有限公司 扬声器单体以及电子设备
CN108307279A (zh) * 2018-01-29 2018-07-20 瑞声科技(新加坡)有限公司 扬声器箱
CN108235198A (zh) * 2018-02-24 2018-06-29 歌尔股份有限公司 一种扬声器模组及电子设备

Also Published As

Publication number Publication date
CN212628371U (zh) 2021-02-26

Similar Documents

Publication Publication Date Title
WO2021138952A1 (zh) 扬声器箱
WO2021164080A1 (zh) 扬声器箱
WO2021138954A1 (zh) 扬声器箱
WO2021237791A1 (zh) 发声器件
WO2021138950A1 (zh) 扬声器箱
WO2022089032A1 (zh) 一种扬声器模组和电子设备
WO2021052243A1 (zh) 扬声器及终端
CN108566599B (zh) 一种发声装置及电子设备
WO2022257738A1 (zh) 发声器件和电子设备
CN213028516U (zh) 发声器件
WO2021237833A1 (zh) 发声器件
WO2021237793A1 (zh) 发声器件
CN112153503B (zh) 发声器件
WO2021138951A1 (zh) 扬声器箱
CN212628370U (zh) 发声器件
WO2021237795A1 (zh) 发声器件
WO2021237788A1 (zh) 发声器件
WO2021000155A1 (zh) 扬声器箱
WO2021237835A1 (zh) 发声器件
WO2021237834A1 (zh) 发声器件
WO2022041458A1 (zh) 发声器件
WO2021237787A1 (zh) 发声器件
WO2021237838A1 (zh) 发声器件
WO2021237789A1 (zh) 发声器件
CN213028514U (zh) 发声器件

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20938254

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20938254

Country of ref document: EP

Kind code of ref document: A1