CN111901715B - Speaker monomer and electronic terminal - Google Patents

Speaker monomer and electronic terminal Download PDF

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Publication number
CN111901715B
CN111901715B CN202010906745.XA CN202010906745A CN111901715B CN 111901715 B CN111901715 B CN 111901715B CN 202010906745 A CN202010906745 A CN 202010906745A CN 111901715 B CN111901715 B CN 111901715B
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CN
China
Prior art keywords
pad
magnetic circuit
voice coil
gap
speaker unit
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Active
Application number
CN202010906745.XA
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Chinese (zh)
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CN111901715A (en
Inventor
孙立国
王继宗
王兴龙
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Goertek Inc
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Goertek Inc
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Priority to CN202010906745.XA priority Critical patent/CN111901715B/en
Publication of CN111901715A publication Critical patent/CN111901715A/en
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Publication of CN111901715B publication Critical patent/CN111901715B/en
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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/02Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/026Supports for loudspeaker casings
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02Details
    • H04R9/025Magnetic circuit

Abstract

The invention discloses a loudspeaker monomer and an electronic terminal, wherein the loudspeaker monomer comprises a shell assembly, a magnetic circuit system, a vibration system and a balance assembly, the balance assembly is arranged corresponding to a gap, the balance assembly comprises a centering branch sheet made of FPCB materials, the centering branch sheet comprises an outer fixing part, an elastic supporting part and a bonding pad structure, and the outer fixing part is connected with the shell assembly; the elastic supporting part is connected with the outer fixing part, is positioned in the gap and is partially connected with the bracket, and elastically deforms along with the vibration of the bracket; the pad structure is connected with the elastic support portion including the cantilever and the pad that are the contained angle setting, the one end that the pad was kept away from to the cantilever, and the cantilever extends along the support, and the roof fixed connection of pad and vibrating diaphragm or support, the lead wire and the pad electricity of voice coil loudspeaker voice coil are connected. The loudspeaker monomer not only enables the structure of the voice coil in the magnetic gap to be arranged more freely, but also effectively increases the volume of a magnetic circuit system, and enables the magnetic field intensity to be higher and the acoustic performance to be better.

Description

Speaker monomer and electronic terminal
Technical Field
The invention relates to the technical field of acoustoelectric products, in particular to a single loudspeaker and an electronic terminal applying the single loudspeaker.
Background
A speaker is an important acoustic component of a portable electronic device, is used for performing conversion between an electrical signal and a sound signal, and is an energy conversion device. Currently, with continuous progress and innovation of technology, the structural design of the speaker is continuously required to be new and changed, which not only needs to satisfy the development trend of thinning, but also needs to pay more and more attention to performance optimization, and also needs to consider process simplification and cost control.
The free centring disk of speaker among the correlation technique is connected with the voice coil loudspeaker voice coil lower surface usually, leads to the structure of voice coil loudspeaker voice coil in the magnetic gap to receive the restriction, still needs to do simultaneously to magnetic circuit and breaks the setting to reduce magnetic field intensity, influence the acoustic performance of speaker.
Disclosure of Invention
The invention mainly aims to provide a loudspeaker monomer and an electronic terminal, and aims to provide the loudspeaker monomer which can effectively avoid the breaking design of a magnetic circuit system, so that the loudspeaker monomer not only enables the structure of a voice coil in a magnetic gap to be more freely arranged, but also effectively increases the volume of the magnetic circuit system, and enables the magnetic field intensity to be higher and the acoustic performance to be better.
In order to achieve the above object, the present invention provides a speaker unit, including:
A housing assembly provided with a receiving cavity;
the magnetic circuit system is arranged in the accommodating cavity, a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity, and a magnetic gap is formed between the magnetic circuit system and the side wall of the accommodating cavity;
the vibration system comprises a vibrating diaphragm, a voice coil connected with the vibrating diaphragm and suspended in the magnetic gap, and a bracket connected with the vibrating diaphragm and suspended in the gap;
balanced subassembly, balanced subassembly corresponds the clearance sets up, balanced subassembly includes the centering piece that the FPCB material was made, the centering piece includes:
an outer fixing part connected with the housing assembly;
the elastic supporting part is connected with the outer fixing part, is positioned in the gap and is partially connected with the bracket, and elastically deforms along with the vibration of the bracket; and
the pad structure, the pad structure is including cantilever and the pad that is the contained angle setting, the cantilever is kept away from the one end of pad with the elastic support portion is connected, the cantilever is followed the support extends, the pad with the vibrating diaphragm perhaps the roof fixed connection of support, the lead wire of voice coil loudspeaker voice coil with the pad electricity is connected.
In one embodiment, the speaker unit comprises two oppositely arranged long sides and two oppositely arranged short sides;
the number of the brackets is two, the two brackets are symmetrically arranged and respectively correspond to the two short edges;
the pad structure is arranged corresponding to the center of the short side.
In an embodiment, the cantilever includes vertical section and the horizontal segment that is the contained angle setting, the pad connect in the vertical section is kept away from the one end of horizontal segment, just the pad with the horizontal segment is the setting of extending of keeping away from each other, the horizontal segment with the elastic support portion is connected.
In one embodiment, the vertical section and the horizontal section are vertically arranged;
and/or the bonding pad and the vertical section are vertically arranged.
In one embodiment, the horizontal section and the elastic supporting part are positioned in the same plane;
and/or the bonding pad, the vertical section, the horizontal section and the elastic supporting part are of an integrally formed structure.
In one embodiment, the elastic support portion is convexly provided with a connecting portion, and the horizontal section and the connecting portion are stacked.
In an embodiment, the pad structures include two pad structures, and the two pad structures are symmetrically disposed and respectively electrically connected to the two leads of the voice coil.
In an embodiment, the pad structure includes one pad, two pads are disposed on each pad structure, and the two pads are electrically connected to two leads of the voice coil, respectively.
In one embodiment, the balancing assembly further comprises:
and two straight sections which deviate from each other and extend are arranged on two opposite sides of the auxiliary vibrating diaphragm, one of the straight sections is connected with the outer fixing part and the shell component, and the other straight section is connected with the elastic supporting part and one end of the support, which is positioned in the gap.
In one embodiment, the magnetic circuit system comprises a magnetic yoke, and a central magnetic circuit part and an annular magnetic circuit part which are arranged on the magnetic yoke, wherein the annular magnetic circuit part is arranged around the central magnetic circuit part, and forms a magnetic gap with the central magnetic circuit part;
the annular magnetic circuit part comprises an annular edge magnet and an annular edge magnetic conduction plate arranged above the annular edge magnet.
The invention further provides an electronic terminal which comprises a shell and the loudspeaker monomer, wherein a cavity is arranged in the shell, and the loudspeaker monomer is arranged in the cavity.
According to the technical scheme, the magnetic circuit system is arranged in the accommodating cavity of the shell assembly, a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity, the balance assembly is arranged corresponding to the gap by arranging the balance assembly, the centering support sheet of the balance assembly is made of FPCB materials, the centering support sheet comprises an outer fixing part, an elastic supporting part and a bonding pad structure, the outer fixing part is connected with the shell assembly to improve the installation stability of the centering support sheet, the elastic supporting part is located in the gap and is partially connected with the support, and the elastic supporting part is elastically deformed along with the vibration of the support, so that the vibration diaphragm is effectively prevented from resonating or swinging, and the acoustic performance of the speaker monomer is improved; simultaneously, through setting up the pad structure into cantilever and the pad that is the contained angle setting, make the pad structure be the spatial structure setting, utilize the cantilever one end of pad structure and the elastic support part to be connected the other end and extend along the support, and with the roof fixed connection of vibrating diaphragm or support, make the lead wire and the pad electricity of voice coil loudspeaker voice coil be connected, thereby realize that the voice coil loudspeaker voice coil switches on with external circuit through the centering piece, so avoided the lower surface of centering piece and voice coil loudspeaker voice coil to be connected, the pad structure realization that accessible spatial structure set up realizes being connected with the neighbouring vibrating diaphragm one end of voice coil loudspeaker voice coil, thereby make magnetic circuit do not break the design, make the structure setting of voice coil loudspeaker voice coil in the magnetic gap more free, and effectively increased magnetic circuit's volume, make magnetic field intensity higher, speaker acoustic performance is better. Furthermore, the elastic support part in the centering support piece is only bent at the annular turning part, so that the bending quantity of the elastic support part can be greatly reduced, the radian of the annular turning part is large, the stress distribution of the elastic support part in the work process can be effectively reduced, the deformation is not easy to occur, and the product reliability risk is reduced.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a speaker unit according to an embodiment of the present invention;
FIG. 2 is an exploded view of a speaker unit according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a speaker unit according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a centering pad according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a centering chip according to another embodiment of the present invention;
FIG. 6 is a schematic partial cross-sectional view of the centralizer of FIG. 5;
FIG. 7 is a schematic view of a centering pad according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a pad structure according to an embodiment of the invention.
The reference numbers illustrate:
reference numerals Name (R) Reference numerals Name (R)
100 Loudspeaker monomer 4 Balancing assembly
1 Shell assembly 41 Centering support piece
1a Containing cavity 411 External fixing part
11 Gap 4111 Long side
2 Magnetic circuit system 4112 Short side
2a Magnetic gap 412 Elastic support part
21 Magnetic conductive yoke 4121 Long axis edge
22 Central magnetic circuit part 4122 Minor axis edge
221 Center magnet 4123 Connecting part
222 Central magnetic conduction plate 413 Connecting segment
23 Annular magnetic circuit part 414 Pad structure
231 Ring edge magnet 4142 Cantilever arm
232 Ring edge magnetic conduction plate 4143 Vertical section
3 Vibration system 4144 Horizontal segment
31 Voice coil 4145 Bonding pad
32 Vibrating diaphragm 42 Auxiliary vibrating diaphragm
33 Support frame
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
A speaker is an important acoustic component of a portable electronic device, is used for converting an electric signal and a sound signal, and is an energy conversion device. Currently, with continuous progress and innovation of technology, the structural design of the speaker is continuously required to be new and changed, which not only needs to satisfy the development trend of thinning, but also needs to pay more and more attention to performance optimization, and also needs to consider process simplification and cost control.
Fixed centering branch piece that is provided with on the free voice coil loudspeaker voice coil of speaker among the correlation technique to prevent that the voice coil loudspeaker voice coil from taking place the polarization of non-vibration direction at the vibration in-process, this centering branch piece is for extension vibrating arm length, and the inflection of vibrating arm design is more, leads to vibrating arm inflection department stress more to concentrate, causes the cracked risk aggravation of vibrating arm.
Based on the above concept and problems, the present invention provides a speaker unit 100. It is understood that the speaker unit 100 is applied to an electronic terminal, and the electronic terminal may be an electronic device, such as a mobile phone, a sound box, a computer, an earphone, a watch, a television, or a tablet computer, and is not limited herein.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, in an embodiment of the present invention, the speaker unit 100 includes a housing assembly 1, a magnetic circuit system 2, a vibration system 3 and a balance assembly 4, wherein the housing assembly 1 is provided with an accommodating cavity 1 a; the magnetic circuit system 2 is arranged in the accommodating cavity 1a, a gap 11 is formed between the magnetic circuit system 2 and the side wall of the accommodating cavity 1a, and a magnetic gap 2a is formed in the magnetic circuit system 2; the vibration system 3 comprises a diaphragm 32, a voice coil 31 connected with the diaphragm 32 and suspended in the magnetic gap 2a, and a bracket 33 connected with the diaphragm 32 and suspended in the gap 11; the balancing assembly 4 is disposed corresponding to the gap 11.
In this embodiment, the balance assembly 4 includes a center piece 41 made of FPCB material, the center piece 41 includes an outer fixing portion 411, an elastic supporting portion 412 and a pad structure 414, wherein the outer fixing portion 411 is connected to the housing assembly 1; the elastic supporting part 412 is connected with the outer fixing part 411, the elastic supporting part 412 is positioned in the gap 11 and is partially connected with the bracket 33, and the elastic supporting part 412 is elastically deformed along with the vibration of the bracket 33; the pad structure 414 includes a cantilever 4142 and a pad 4145 disposed at an included angle, an end of the cantilever 4142 away from the pad 4145 is connected to the elastic support portion 412, the cantilever 4142 extends along the bracket 33, the pad 4145 is fixedly connected to the top wall of the diaphragm 32 or the bracket 33, and a lead of the voice coil 31 is electrically connected to the pad 4145.
In the present embodiment, as shown in fig. 1, fig. 2 and fig. 3, the casing assembly 1 includes a bottom casing (not shown) and an outer casing (not shown), wherein a supporting arm protrudes from a periphery of the bottom casing, and the magnetic circuit system 2 is disposed on the bottom casing of the casing assembly 1 and spaced from the supporting arm; the shell comprises a side part and a bottom part, the side part and the support arm are arranged correspondingly and form the accommodating cavity 1a in a surrounding mode with the bottom shell, the bottom part is formed by bending one end, adjacent to the support arm, of the side part towards the accommodating cavity 1a, and the gaps 11 are formed among the side part, the bottom part, the support arm and the magnetic circuit system 2 of the shell assembly 1.
It will be understood that the bottom shell is used for fixing and mounting the magnetic circuit system 2, and the periphery of the bottom shell is convexly provided with supporting arms, so that the bottom shell can be connected with the casing by the supporting arms, thereby enclosing the accommodating cavity 1 a. The magnetic circuit system 2 is fixedly arranged on one side of the bottom shell facing the containing cavity 1a and is arranged at an interval with the supporting arm. Through setting up the shell into lateral part and bottom for the lateral part corresponds the setting with the support arm, and from when the shell is connected with the drain pan, the lateral part encloses to close with the support arm of drain pan and forms and hold chamber 1a, so can make things convenient for the fixed part to be connected with the outer wall of lateral part. In this embodiment, the bottom of the housing is formed by bending one end of the side portion adjacent to the support arm into the accommodation chamber 1 a.
In this embodiment, the casing assembly 1 is configured as a bottom casing and a shell, so as to facilitate the installation and fixation of the magnetic circuit system 2, the vibration system 3 and the balance assembly 4, and improve the installation convenience of the speaker unit 100.
As shown in fig. 1, 2 and 3, the vibration system 3 includes a diaphragm 32 and a bracket 33 disposed opposite to the magnetic circuit system 2, the diaphragm 32 includes a central portion, a corrugated portion disposed around the central portion, and a fixing portion integrally disposed with the corrugated portion, one end of the bracket 33 is connected to the central portion, and the other end of the bracket 33 extends into the gap 11 toward the bottom wall of the accommodating chamber 1a and is connected to a centering pad 41 of the balance assembly 4.
It can be understood that, the support 33 is utilized to transmit the vibration of the diaphragm 32 to the elastic support part 412 of the centering disk 41, so that when the diaphragm 32 vibrates, the elastic support part 412 is elastically deformed along with the vibration of the support 33 to improve the swing condition of the vibration system 3, and the diaphragm 32 is prevented from swinging left and right in the vibration process, thereby affecting the sound production effect.
In this embodiment, the magnetic circuit system 2 is provided with the magnetic gap 2a, the vibration system 3 further includes the voice coil 31 suspended in the magnetic gap 2a, so that the voice coil 31 is conducted with an external circuit through the bonding pad 4145 of the centering disk 41, the voice coil 31 is utilized to transmit electric energy to the magnetic gap 2a of the magnetic circuit system 2, the magnetic field generated by the magnetic circuit system 2 converts the electric energy into mechanical energy, the voice coil 31 vibrates, and the vibrating diaphragm 32 of the vibration system 3 is driven to realize vibration and sound production, and further the mechanical energy is converted into sound energy. That is, after the voice coil 31 disposed in the magnetic gap 2a receives an externally varying alternating current signal, the voice coil makes a reciprocating motion of cutting magnetic lines of force under the driving of the magnetic field force of the magnetic circuit system 2, so as to drive the diaphragm 32 of the vibration system 3 to vibrate and generate sound.
It can be understood that, as shown in fig. 2, 4 to 7, the damper 41 includes an outer fixing portion 411, an elastic supporting portion 412 and a connecting portion 413. In this embodiment, the outer fixing portion 411 may be ring-shaped; the elastic supporting portion 412 may be ring-shaped and is located inside the outer fixing portion 411; at this time, the connection segment 413 is located between the outer fixing portion 411 and the elastic supporting portion 412 and connects the outer fixing portion 411 and the elastic supporting portion 412. Optionally, the connecting section 413, the elastic supporting portion 412 and the outer fixing portion 411 are all located in the same plane, and the connecting section 413 is a straight line section.
The center support piece 41 comprises an annular outer fixing part 411, an annular elastic supporting part 412 and a connecting section 413 for connecting the annular outer fixing part 411 and the annular elastic supporting part 412, wherein the connecting section 413, the elastic supporting part 412 and the outer fixing part 411 are all located in the same plane, and the connecting section 413 is a straight line section, so that the elastic supporting part 412 in the center support piece 41 is only bent at an annular corner, the number of bent elastic supporting parts 412 can be greatly reduced, the radian of the annular corner is large, the stress distribution of the elastic supporting part 412 in the working process can be effectively reduced, deformation is not easy to occur, and the product reliability risk is reduced.
As shown in fig. 2, 3 and 4, the pad structure 413 includes a cantilever 4142 and a pad 4145, which are disposed at an included angle, and an end of the cantilever 4142 away from the pad 4145 is connected to the short shaft 4122 of the elastic support part 412.
In this embodiment, the pad structure 413 is configured to be the cantilever 4142 and the pad 4145 which are arranged at an included angle, so that one end of the cantilever 4142, which is far away from the pad 4145, is connected to the short shaft 4122 of the elastic supporting portion 412, so that a certain height difference exists between the pad 4145 and the plane where the outer fixing portion 411 of the center bracket 41 and the elastic supporting portion 412 are located, and when the center bracket 41 is applied to the speaker unit 100, the pad 4145 of the center bracket 41 can be conveniently connected to the voice coil 31 of the speaker unit 100, thereby implementing conduction between the voice coil 31 and the outer pad under the special structure of the speaker unit 100.
In the speaker unit 100 of the present invention, the magnetic circuit system 2 is disposed in the accommodating cavity 1a of the housing assembly 1, and forms a gap with a sidewall of the accommodating cavity 1a, and the balance assembly 4 is disposed so that the balance assembly 4 is disposed corresponding to the gap 11, the center piece 41 of the balance assembly 4 is made of FPCB material, and the center piece 41 includes an outer fixing portion 411, an elastic supporting portion 412 and a pad structure 414, and is connected to the housing assembly 1 by using the outer fixing portion 411, so as to improve the mounting stability of the center piece 41, and the elastic supporting portion 412 is disposed in the gap 11 and partially connected to the bracket 33, so that the elastic supporting portion 412 is elastically deformed along with the vibration of the bracket 33, thereby effectively preventing the diaphragm 32 from resonating or swinging, and improving the acoustic performance of the speaker unit 100; meanwhile, by providing the pad structure 414 as an angled cantilever 4142 and pad 4145, the pad structure 414 is arranged in a three-dimensional structure, and one end of the cantilever 4142 of the pad structure 414 is connected to the elastic support part 412, and the other end extends along the bracket 33, and is fixedly connected to the diaphragm 32 or the top wall of the support 33, so that the lead of the voice coil 31 is electrically connected to the pad 4145, thereby realizing conduction of the voice coil 31 with an external circuit through the spider 41, thus avoiding connection of the spider 41 with the lower surface of the voice coil 31, the connection to the voice coil 31 adjacent to the end of the diaphragm 32 can be realized by a land structure 414 arranged in a three-dimensional structure, thereby, the magnetic circuit system 2 is not designed to be broken, the structure of the voice coil 31 in the magnetic gap 2a is more freely arranged, and effectively increased magnetic circuit 2's volume for magnetic field intensity is higher, and speaker acoustic performance is better. Furthermore, the elastic support part 412 in the centering branch piece 41 is only bent at the annular corner, so that the bending quantity of the elastic support part 412 can be greatly reduced, the radian of the annular corner is large, the stress distribution of the elastic support part 412 in the working process can be effectively reduced, the deformation is less prone to occurring, and the product reliability risk is reduced.
In one embodiment, as shown in fig. 1 and 2, the speaker unit 100 includes two oppositely disposed long sides and two oppositely disposed short sides; two brackets 33 are arranged, and the two brackets 33 are symmetrically arranged and respectively correspond to the two short sides; the pad structure 414 is disposed corresponding to the center of the short side.
It is understood that the speaker unit 100 is a rectangular ring, that is, the entire structure of the damper 41 is a rectangular ring or an elliptical ring. As shown in fig. 4 to 8, the outer fixing portion 411 of the pin 41 includes two opposite long sides 4111 and two opposite short sides 4112, and the resilient support 412 includes two opposite long sides 4121 and two opposite short sides 4122. At this time, the long side 4111 of the outer fixing portion 411 and the long side 4121 of the elastic support portion 412 correspond to the long side of the speaker unit 100, and the short side 4112 of the outer fixing portion 411 and the short side 4122 of the elastic support portion 412 correspond to the short side of the speaker unit 100.
In the embodiment, two long sides 4111 and two short sides 4112 of the outer fixing portion 411 are sequentially connected and enclosed to form a rectangular ring structure, and the resilient support 412 is located inside the outer fixing portion 411, that is, each long side 4121 and each short side 4122 of the resilient support 412 correspond to each long side 4111 and each short side 4112 of the outer fixing portion 411.
It can be understood that the connecting segment 413 connects the long edge 4111 and the long axis edge 4121, that is, the long edge 4111 of the outer fixing portion 411 is connected to the long axis edge 4121 of the elastic supporting portion 412 through the connecting segment 413. So set up, make outer fixed part 411 and elastic support portion 412 only connect through the linkage segment 413 of straightway, thereby make elastic support portion 412 only bend in annular corner (also be the junction of each major axis limit 4121 and each minor axis limit 4122), the quantity of bending of elastic support portion 412 that can significantly reduce, and the radian of annular corner is great, can effectively reduce the stress distribution of elastic support portion 412 during operation, be more difficult for taking place deformation, reduce product reliability risk
In one embodiment, as shown in fig. 4 to 8, the connecting segments 413 include two connecting segments 413, two connecting segments 413 are symmetrically disposed, and each connecting segment 413 is connected to a center of the long edge 4111 and the long axis edge 4121.
In the embodiment, two connecting segments 413 are provided, such that each connecting segment 413 connects a long side 4111 of the outer fixing portion 411 and a long-axis side 4121 of the elastic support portion 412, thereby ensuring that the outer fixing portion 411 of the damper 41 is stably connected through the two connecting segments 413 and the outer fixing portion 411 and the elastic support portion 412 are located on the same plane. Optionally, two connecting segments 413 are symmetrically disposed, and each connecting segment 413 is connected to a center of one long side 4111 and the long-axis side 4121.
In an embodiment, as shown in fig. 4 to 8, the outer fixing portion 411, the two connecting segments 413 and the elastic supporting portion 412 are integrally formed.
It can be understood that, by arranging the outer fixing portion 411, the two connecting segments 413 and the elastic support portion 412 as an integral structure, the structural strength of the spider 41 is effectively improved, and meanwhile, the processing and the production of the spider 41 are facilitated.
Of course, in other embodiments, the outer fixing portion 411 of the centering disk 41 may be disposed separately from the elastic support portion 412 through the connecting segment 413, and the fixing may be realized by gluing or the like, for example, and is not limited herein.
In one embodiment, as shown in fig. 4 to 8, the connection between each long axis 4121 and each short axis 4122 is a circular arc transition. It can be understood that, by setting the connection point of each major axis edge 4121 and each minor axis edge 4122 of the elastic support portion 412 to be an arc transition design, the arc angle at the connection point is ensured to be large and smooth in transition, the stress distribution during the operation of the centering strut 41 can be effectively reduced, and the reliability margin is improved.
Meanwhile, the outer fixing portion 411 of the centering disk 41 is connected with the elastic support portion 412 only through the connecting section 413 of the two straight line segments, so that the number of bent parts is greatly reduced, stress during vibration can be dispersed, the centering disk 41 is not prone to deformation, and the product reliability risk is effectively reduced.
In one embodiment, as shown in fig. 4-8, the pad structure 413 is connected to the short side 4122. It can be understood that, by connecting the pad structure 413 to the elastic support portion 412, the spider 41 is conveniently connected to the voice coil 31 of the speaker unit 100 through the pad structure 413 during operation, so as to facilitate the voice coil 31 to be conducted with an external circuit.
As shown in fig. 4 to 8, optionally, the pad structure 413 is connected to the center of the short shaft edge 4122 and located on a side of the short shaft edge 4122 facing away from the short edge 4112. It is understood that the arrangement is such that the spider 41 facilitates the connection between the pad structure 413 and the voice coil 31 during operation, and avoids interference with other components of the speaker unit 100.
In one embodiment, as shown in fig. 4, 5, 6, 7 and 8, the cantilever 4142 includes an angled vertical segment 4143 and an angled horizontal segment 4144, the pad 4145 is connected to an end of the vertical segment 4143 away from the horizontal segment 4144, the pad 4145 extends away from the horizontal segment 4144, and the horizontal segment 4144 is connected to the elastic support portion 412.
In this embodiment, the horizontal segment 4144 is connected to the minor axis 4122. By arranging the cantilever 4142 to form the vertical segment 4143 and the horizontal segment 4144 arranged at an included angle, so as to connect the horizontal segment 4144 with the short shaft edge 4122 of the elastic support part 412, the vertical segment 4143 and the pad 4145 of the cantilever 4142 are located inside the short shaft edge 4122 of the elastic support part 412, that is, the vertical segment 4143 and the pad 4145 of the cantilever 4142 are located on the side of the short shaft edge 4122 opposite to the short shaft edge 4112, so that when the damper 41 is applied to the speaker unit 100, the pad 4145 of the damper 41 can be conveniently connected with the voice coil 31 of the speaker unit 100, and the voice coil 31 and the external pad can be conducted under the special structure of the speaker unit 100.
In one embodiment, as shown in fig. 8, the vertical segment 4143 and the horizontal segment 4144 are optionally vertically disposed; the pads 4145 are perpendicular to the vertical segment 4143, and the pads 4145 extend away from the horizontal segment 4144, i.e., on opposite sides of the vertical segment 4143. Therefore, the bonding pad 4145 is arranged in parallel with the plane where the outer fixing portion 411 and the elastic supporting portion 412 of the centering bracket 41 are located, so that the bonding pad 4145 is connected with the lead of the voice coil 31, and meanwhile, the bonding pad 4145 is connected with the bracket 33 of the speaker unit 33.
In one embodiment, as shown in fig. 3 and 4, the horizontal segment 4144 and the elastic support part 412 are located in the same plane. Optionally, the pad 4145, the vertical segment 4143, the horizontal segment 4144 and the elastic support part 412 are integrally formed. With this arrangement, the connection strength between the outer fixing portion 411 and the elastic support portion 412 of the spider 41 and the pad structure 413 is improved, thereby facilitating the simplification of the process of manufacturing the spider 41.
In the present embodiment, the pad 4145 is provided with a height difference with the horizontal segment 4144 by the vertical segment 4143, so that the conduction of the speaker unit 100 is realized by the lead connection spot welding of the pad 4145 and the voice coil 31. With the arrangement, the limitation that the bonding pad of the traditional centering support piece 41 and the vibrating arm are in the same horizontal plane is broken through, a certain height difference exists between the cantilever 4142 and the bonding pad 4145, and conduction between the voice coil 31 and an external bonding pad under the special structure of the loudspeaker single body 100 is realized.
In an embodiment, as shown in fig. 5, 6 and 7, the elastic supporting portion 412 is convexly provided with a connecting portion 4123, and the horizontal segment 4144 and the connecting portion 4123 are stacked.
It can be understood that the short shaft edge 4122 is convexly provided with the connecting portion 4123, the connecting portion 4123 is convexly provided on the short shaft edge 4122 of the elastic supporting portion 412, the connecting portion 4123 is provided with a pad, and the horizontal segment 4144 of the cantilever 4142 is also provided with a pad, so that the connecting portion 4123 of the short shaft edge 4122 of the elastic supporting portion 412 and the horizontal segment 4144 of the pad structure 414 are conveniently welded by welding or electric welding, and the pad 4145 is electrically conducted with the elastic supporting portion 412.
In an embodiment, as shown in fig. 2, 3, 4, 5 and 6, the pad structures 414 include two pad structures 414, and the two pad structures 414 are symmetrically disposed and electrically connected to two leads of the voice coil 31, respectively. It is understood that the arrangement is such that the connection with the two leads of the voice coil 31 of the speaker unit 100 is made using the pads 4145 of the two pad structures 413.
In one embodiment, as shown in fig. 7, the pad structure 414 includes one pad structure, two pads 4145 are disposed on each pad structure 414, and the two pads 4145 are electrically connected to two leads of the voice coil 31, respectively.
In an embodiment, as shown in fig. 2 and fig. 3, the balance assembly 4 further includes an auxiliary diaphragm 42, two straight sections extending away from each other are disposed on two opposite sides of the auxiliary diaphragm 42, one of the straight sections is connected to the outer fixing portion 411 and the housing assembly 1, and the other straight section is connected to the elastic supporting portion 412 and one end of the support 33 located in the gap 11.
It can be understood that the outer fixing portion 411 of the damper 41 is interposed between the support arm and the bottom of the housing assembly 1, and the elastic support portion 412 of the damper 41 is located in the gap 11; two opposite sides of the auxiliary diaphragm 42 are provided with two flat sections extending away from each other, one of the flat sections is sandwiched between the outer fixing portion 411 of the center brace 41 and the support arm, and the other flat section is connected with the horizontal section 4144 of the center brace 41.
In the present embodiment, the balance member 4 including the damper disk 41 and the auxiliary diaphragm 42 is disposed in the accommodating chamber 1a, so that the circumferential edge of the damper disk 41 is sandwiched between the support arm and the bottom, thereby improving the mounting stability of the damper disk 41. It can be understood that, by providing the straight sections on two opposite sides of the auxiliary diaphragm 42, the two straight sections extend away from each other, so that the straight section of the auxiliary diaphragm 42 is sandwiched between the spider 41 and the support arm, thereby improving the connection stability of the auxiliary diaphragm 42.
Alternatively, the damper 41 may be provided in an annular structure, and the auxiliary diaphragm 42 may be provided in plurality.
In one embodiment, as shown in fig. 2 and 3, the magnetic circuit system 2 includes a magnetic yoke 21, and a central magnetic circuit portion 22 and an annular magnetic circuit portion 23 disposed on the magnetic yoke 21, wherein the annular magnetic circuit portion 23 is disposed around the central magnetic circuit portion 22 and forms a magnetic gap 2a with the central magnetic circuit portion 22.
As can be appreciated, the magnetic yoke 21 is disposed on the bottom shell of the housing assembly 1 and spaced apart from the support arms; the central magnetic circuit portion 22 is disposed on a side of the magnetic yoke 21 facing the diaphragm 32; the annular magnetic circuit portion 23 is disposed on a side of the yoke 21 facing the diaphragm 32 and surrounds the central magnetic circuit portion 22, the magnetic gap 2a is formed between the annular magnetic circuit portion 23 and the central magnetic circuit portion 22, and the gap 11 is formed between the annular magnetic circuit portion 23 and the bottom.
In the present embodiment, the magnetic yoke 21 is fixed to the bottom case, the central magnetic circuit portion 22 and the annular magnetic circuit portion 23 are disposed on a side of the magnetic yoke 21 facing the diaphragm 32, and the annular magnetic circuit portion 23 is disposed around the central magnetic circuit portion 22 and forms a magnetic gap 2a with the central magnetic circuit portion 22, so as to facilitate the voice coil 31 to be suspended in the magnetic gap 2a, i.e., between the central magnetic circuit portion 22 and the annular magnetic circuit portion 23. It can be understood that the annular magnetic circuit portion 23 which is not designed to be broken is adopted, so that the volume of the annular magnetic circuit portion 23 is effectively increased, the magnetic field intensity is higher, and the acoustic performance of the speaker unit 100 is improved.
In one embodiment, as shown in fig. 2 and 3, the central magnetic circuit portion 22 includes a central magnet 221 and a central magnetic conductive plate 222, and the central magnet 221 is sandwiched between the magnetic conductive yoke 21 and the central magnetic conductive plate 222. The annular magnetic circuit portion 23 includes an annular edge magnet 231 and an annular edge magnetic conductive plate 232 disposed above the annular edge magnet 231.
In this embodiment, the annular edge magnet 231 is clamped between the magnetic yoke 21 and the annular edge magnetic conductive plate 232, and the annular edge magnetic conductive plate 232 is connected to the bottom, and a via hole or a through hole structure is formed between the bottom, so as to conveniently provide a space for avoiding one end of the support 33 away from the diaphragm 32 and the pad structure 414 of the centering support 41.
In this embodiment, the central magnet 221 and the central magnetic plate 222 have the same structural contour, and the central magnet 221 and the central magnetic plate 222 may be selected to have a plate-like structure. The annular edge magnet 231 and the annular edge magnetic conducting plate 232 have the same structural outline, and the annular edge magnet 231 and the annular edge magnetic conducting plate 232 can be selected to be of annular structures.
As shown in fig. 3, the annular edge magnetic conductive plate 232 is connected to the bottom of the housing, and a via hole or a through hole structure is formed between the annular edge magnetic conductive plate 232 and the bottom, so as to facilitate the simplification of the processing process of the annular edge magnetic conductive plate 232 and the housing of the housing assembly 1. In this embodiment, the casing and the annular magnetic conducting plate 232 are made of metal materials, so as to improve the heat conduction and dissipation effects.
In the inventive centralizer 41, the elastic support part 412 participating in vibration is integrally arranged to be in a ring structure, the long axis edge 4121 of the elastic support part 412 is connected with the long edge 4111 of the outer fixing part 411 by the connecting section 413 of the straight line section, the pad structure 414 is arranged on the short axis edge 4122 of the elastic support part 412, and the whole is in a symmetrical design, so that the elastic support part 412 between the pad structure 414 and the connecting section 413 has at most one return bend design, and the return bend part has a larger R angle and is transited smoothly, thereby effectively reducing the stress distribution of the elastic support part 412 in operation and improving the reliability margin.
It can be understood that the number of the bending parts of the elastic support part 412 of the centering disk 41 is reduced, so that the stress during vibration can be dispersed, the deformation is less likely to occur, and the risk of product reliability is reduced. The two major axis sides 4121 of the elastic support portion 412 are integrally connected together via the two minor axis sides 4122, so that both the major axis sides 4121 of the elastic support portion 412 can be conducted, and the risk of conduction failure of the centering branch sheet 41 during operation is reduced. Meanwhile, as shown in fig. 4 and 5, the two major axis sides 4121 of the elastic support portion 412 are connected to the pad structure 414 through the two minor axis sides 4122, or the two major axis sides 4121 of the elastic support portion 412 may be conducted to the pad piece 4141 through the two minor axis sides 4122 to form independent arm structures.
In the present embodiment, as shown in fig. 4, fig. 5, fig. 6 and fig. 7, the pad structure 414 of the spider 41 is configured as the cantilever 4142 and the pad 4145, so that there is a certain height difference between the pad 4145 and the elastic support part 412, thereby realizing conduction between the voice coil 31 and the external pad under the special structure of the speaker unit 100.
As shown in fig. 3, in the present embodiment, the upper surface of the outer fixing portion 411 of the spider 41 is connected to the metal case, the lower surface is connected to the auxiliary diaphragm 42, the upper surface of the pad 4145 is connected to the bracket 33, the lower surface is connected to the voice coil 31 by wire, the vertical section 4143 of the cantilever 4142 is adhered to the vertical wall of the bracket 33, and the pad of the lower horizontal section 4144 is connected to the pad of the short axial side 4122 of the elastic support portion 412 of the spider 41.
The damper 41 of the present embodiment can achieve the internal and external conduction without affecting the magnetic circuit space, and fully ensure the performance of the magnetic circuit system 2. Through setting up independent pad connecting piece, select for use easily fashioned material and technology, fully guarantee the stability of shaping structure, both can play the signal and switch on the effect, play the effect of certain structure connecting piece again. The three-dimensional bonding pads are further arranged and are respectively conducted with the leads of the voice coil 31 at two symmetrical sides, or only arranged at one side and are respectively conducted with the start and end lines of the voice coil 31. It is understood that the independent pad connector may be implemented by, but not limited to, metal punch forming, injection molding, FPCB hot press forming, composite material compression molding, and the like, and is not limited thereto.
The present invention further provides an electronic terminal, which includes a housing and a speaker unit 100, and the specific structure of the speaker unit 100 refers to the foregoing embodiments, and since the electronic terminal adopts all technical solutions of all the foregoing embodiments, the electronic terminal at least has all beneficial effects brought by the technical solutions of the foregoing embodiments, and details are not repeated herein.
In this embodiment, a cavity is disposed in the housing, and the speaker unit 100 is disposed in the cavity. It is understood that the electronic terminal may be an electronic device, such as a mobile phone, a sound box, a computer, a headset, a watch, a television, or a tablet computer, and is not limited herein.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (11)

1. A speaker unit applied to a flat type speaker, the speaker unit comprising:
a housing assembly provided with a receiving cavity;
The magnetic circuit system is arranged in the accommodating cavity, a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity, and the magnetic circuit system is provided with a magnetic gap;
the vibration system comprises a vibrating diaphragm, a voice coil connected with the vibrating diaphragm and suspended in the magnetic gap, and a support connected with the vibrating diaphragm and suspended in the gap;
balanced subassembly, balanced subassembly corresponds the clearance sets up, balanced subassembly includes the centering piece that the FPCB material was made, the centering piece includes:
an outer fixing portion connected with the housing assembly;
the elastic supporting part is connected with the outer fixing part, is positioned in the gap and is partially connected with the bracket, and elastically deforms along with the vibration of the bracket; and
the pad structure, the pad structure is including cantilever and the pad that is the contained angle setting, the cantilever is kept away from the one end of pad with the elastic support portion is connected, the cantilever is followed the support extends, the pad with the vibrating diaphragm perhaps the roof fixed connection of support, the lead wire of voice coil loudspeaker voice coil with the pad electricity is connected.
2. The speaker cell as claimed in claim 1, wherein the speaker cell comprises two oppositely disposed long sides and two oppositely disposed short sides;
the two brackets are symmetrically arranged and respectively correspond to the two short edges;
the pad structure is arranged corresponding to the center of the short side.
3. The single loudspeaker of claim 1, wherein the cantilever includes a vertical section and a horizontal section disposed at an included angle, the pad is connected to an end of the vertical section away from the horizontal section, the pad extends away from the horizontal section, and the horizontal section is connected to the elastic support.
4. A speaker unit as claimed in claim 3, wherein the vertical section is arranged perpendicular to the horizontal section;
and/or the bonding pad and the vertical section are vertically arranged.
5. The speaker cell as claimed in claim 3, wherein the horizontal section and the resilient support portion are in the same plane;
and/or the bonding pad, the vertical section, the horizontal section and the elastic supporting part are of an integrally formed structure.
6. The speaker unit as claimed in claim 3, wherein the resilient support portion is provided with a protruding connection portion, and the horizontal section and the connection portion are stacked.
7. The speaker unit as claimed in claim 1, wherein the pad structures comprise two pad structures, and the two pad structures are symmetrically disposed and electrically connected to the two leads of the voice coil, respectively.
8. The speaker unit as claimed in claim 1, wherein the pad structures include one pad, and two pads are disposed on each pad structure, and the two pads are electrically connected to two leads of the voice coil, respectively.
9. The speaker cell of any one of claims 1-8, wherein the balance assembly further comprises:
and two straight sections which deviate from each other and extend are arranged on two opposite sides of the auxiliary vibrating diaphragm, one of the straight sections is connected with the outer fixing part and the shell component, and the other straight section is connected with the elastic supporting part and one end of the support, which is positioned in the gap.
10. The speaker unit as claimed in any one of claims 1 to 8, wherein the magnetic circuit system comprises a yoke, and a central magnetic circuit portion and an annular magnetic circuit portion provided on the yoke, the annular magnetic circuit portion being disposed around the central magnetic circuit portion and forming a magnetic gap with the central magnetic circuit portion;
The annular magnetic circuit part comprises an annular edge magnet and an annular edge magnetic conduction plate arranged above the annular edge magnet.
11. An electronic terminal, characterized in that, it comprises a housing and a speaker unit as claimed in any one of claims 1 to 10, wherein a cavity is provided in the housing, and the speaker unit is provided in the cavity.
CN202010906745.XA 2020-08-31 2020-08-31 Speaker monomer and electronic terminal Active CN111901715B (en)

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CN213938309U (en) * 2020-11-30 2021-08-10 瑞声科技(新加坡)有限公司 Sound production device

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CN204539461U (en) * 2015-03-23 2015-08-05 歌尔声学股份有限公司 Loud speaker
CN207354585U (en) * 2017-08-28 2018-05-11 常州美欧电子有限公司 Magnetic speaker
CN110418257A (en) * 2018-04-27 2019-11-05 歌尔股份有限公司 Sounding device
CN208386919U (en) * 2018-06-25 2019-01-15 歌尔股份有限公司 Microphone device and portable terminal
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