CN111988711B - Speaker monomer and electronic terminal - Google Patents

Speaker monomer and electronic terminal Download PDF

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Publication number
CN111988711B
CN111988711B CN202010906741.1A CN202010906741A CN111988711B CN 111988711 B CN111988711 B CN 111988711B CN 202010906741 A CN202010906741 A CN 202010906741A CN 111988711 B CN111988711 B CN 111988711B
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China
Prior art keywords
magnetic
diaphragm
voice coil
circuit system
central
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CN202010906741.1A
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Chinese (zh)
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CN111988711A (en
Inventor
王兴龙
葛连山
刘琦琦
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Goertek Inc
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Goertek Inc
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/041—Centering
    • 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
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups

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

Abstract

The invention discloses a loudspeaker monomer and an electronic terminal, wherein the loudspeaker monomer comprises: the shell assembly is provided with an accommodating cavity; the magnetic circuit system is arranged in the accommodating cavity; the vibration system comprises a vibration diaphragm, a reinforcing part and two supports, wherein the vibration diaphragm, the reinforcing part and the two supports are arranged opposite to the magnetic circuit system, an opening is formed in the center of the vibration diaphragm, the reinforcing part is arranged corresponding to the opening, the two supports are arranged on two opposite sides of the reinforcing part and connected with the vibration diaphragm, and at least part of each support is exposed out of the opening. The invention aims to provide the loudspeaker monomer which can effectively enhance the intensity of the central vibration radiation area of the diaphragm, so that the high-frequency performance of the loudspeaker monomer is 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 converting an electric signal and a sound signal, and is an energy conversion device. With the miniaturization of electronic devices such as mobile phones, the size design of the speaker is more and more challenging. The diaphragm of the speaker in the related art has poor high-frequency performance due to poor structural strength of the vibration region.
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 enhance the strength of a vibration radiation area in the center of a vibrating diaphragm, so that the high-frequency performance of the loudspeaker monomer is better.
In order to achieve the above object, the present invention provides a speaker unit, including:
the shell assembly is provided with an accommodating cavity;
the magnetic circuit system is arranged in the accommodating cavity, and a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity;
the vibration system comprises a vibration diaphragm, a reinforcing part and two supports, wherein the vibration diaphragm, the reinforcing part and the two supports are arranged opposite to the magnetic circuit system, the central part of the vibration diaphragm comprises a connecting part with an opening, the two supports are connected to two opposite sides of the reinforcing part, each support comprises a fixing part connected with the edge of the reinforcing part and an extending part connected with the fixing part and extending downwards, the two fixing parts and the reinforcing part are connected with the connecting part and exposed out of the opening, and the extending part is positioned in the gap; and
the balance assembly corresponds to the gap arrangement, one end of the balance assembly is connected with the shell assembly, and the other end of the balance assembly is connected with the extension part.
In an embodiment, a first step is disposed at an end of the fixing portion away from the extending portion, a second step is disposed at the reinforcing portion, and the first step is in limit abutting connection with the second step.
In an embodiment, the bracket further includes a bending portion formed by bending one end of the extending portion away from the fixing portion, and an extending direction of the bending portion is opposite to an extending direction of the fixing portion;
the bending part is connected with one end of the balance component.
In one embodiment, the balancing assembly comprises:
the centering support piece is arranged in the gap and is connected with the shell assembly; and
the relative both sides of supplementary vibrating diaphragm are equipped with two straight portions that extend from opposite directions, one straight portion with the centering branch piece is connected, another straight portion is located the clearance, and with the extension is kept away from the one end of fixed part is connected.
In one embodiment, the speaker unit is a rectangular ring, and the speaker unit includes two opposite long sides and two opposite short sides; the auxiliary vibrating diaphragms comprise two, one auxiliary vibrating diaphragm is arranged corresponding to one support;
the two auxiliary diaphragms are symmetrically arranged and respectively correspond to the two long sides; or the two auxiliary diaphragms are symmetrically arranged and respectively correspond to the two short sides.
In an embodiment, the vibration system further includes a voice coil, the magnetic circuit system is provided with a magnetic gap, one end of the voice coil is connected with one side of the reinforcing part facing the magnetic circuit system, and the other end of the voice coil is suspended in the magnetic gap;
the centering piece is made for the FPCB, the centering piece includes installation department and elasticity portion, the installation department with casing assembly connects, elasticity portion with the extension is connected, elasticity portion epirelief is equipped with the cantilever, the cantilever along the extension with the fixed part is buckled and is extended and fixed, the voice coil loudspeaker voice coil is by neighbouring the one end of reinforcement portion stretch out the lead wire with the cantilever electricity is connected.
In an embodiment, the vibration system further includes a voice coil, the magnetic circuit system is provided with a magnetic gap, one end of the voice coil is connected with one side of the reinforcing part facing the magnetic circuit system, and the other end of the voice coil is suspended in the magnetic gap;
the centering support piece is made of FPCB, a conducting circuit is arranged on the support, a first bonding pad connected with the conducting circuit is arranged on the fixing portion, and a second bonding pad connected with the conducting circuit is arranged on the extending portion;
the voice coil is connected with the first bonding pad through a lead extending out of one end adjacent to the reinforcing part, and the centering support piece is electrically connected with the second bonding pad.
In one embodiment, the magnetic circuit system comprises:
the magnetic conduction yoke is arranged in the accommodating cavity;
the central magnetic conduction part is arranged on one side, facing the reinforcement part, of the magnetic conduction yoke; and
and the annular magnetic conduction part is arranged on one side, facing the reinforcement part, of the magnetic conduction yoke and surrounds the central magnetic conduction part, and a magnetic gap is formed between the annular magnetic conduction part and the central magnetic conduction part.
In one embodiment, the central magnetic conductive portion includes a central magnet and a central magnetic conductive plate, and the central magnet is sandwiched between the magnetic conductive yoke and the central magnetic conductive plate;
and/or, annular magnetic conduction portion includes annular limit magnet and annular limit magnetic conduction board, annular limit magnet presss from both sides to locate the magnetic conduction yoke with between the annular limit magnetic conduction board, annular limit magnetic conduction board with the lateral wall that holds the chamber is connected.
In one embodiment, the bracket is made of a metal material.
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, and a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity, so that the vibrating diaphragm and the reinforcing part of the vibrating system are arranged opposite to the magnetic circuit system, the connecting part with an opening is arranged in the central part of the vibrating diaphragm, and the reinforcing part is arranged corresponding to the opening; simultaneously, through setting up two supports, make two leg joint in the relative both sides of reinforcement portion, thereby make support and reinforcement portion be the components of a whole that can function independently design, so ensure that the support material does not receive the influence of reinforcement portion, thereby make the selection of support more free, and utilize the fixed part of support and the edge connection of reinforcement portion, the extension and the fixed part of support are connected and extend downwards to in the clearance, make two fixed parts and reinforcement portion be connected with connecting portion, and expose in the opening, thereby make support and reinforcement portion cooperation fill in the opening of vibrating diaphragm central authorities, so utilize support and reinforcement portion effectively to strengthen the intensity in vibrating diaphragm central authorities radiation area, make the free high frequency performance of speaker show more excellently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic 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 speaker unit according to another embodiment of the present invention;
FIG. 5 is an exploded view of a speaker unit according to another embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a speaker unit according to another embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a diaphragm, a bracket, and a reinforcement portion according to an embodiment of the present invention;
FIG. 8 is an exploded view of a diaphragm, a bracket, and a reinforcement portion according to an embodiment of the present invention;
FIG. 9 is a schematic structural view of a bracket and a reinforcing part according to another embodiment of the present invention;
FIG. 10 is a schematic view of a reinforcing portion according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a bracket according to an embodiment of the invention.
The reference numbers illustrate:
Figure BDA0002659388850000041
Figure BDA0002659388850000051
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 all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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. With the miniaturization of electronic devices such as mobile phones, the size design of the speaker is more and more challenging. The diaphragm of the speaker in the related art has poor high-frequency performance due to poor structural strength of the vibration region.
Based on the above-mentioned 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, a computer, an earphone, a watch, a television, or a tablet computer, and is not limited herein.
Referring to fig. 1 to 11, 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 has an accommodating cavity 1 a; the magnetic circuit system 2 is arranged in the accommodating cavity 1a, and a gap 24 is formed between the magnetic circuit system 2 and the side wall of the accommodating cavity 1 a; the vibration system 3 includes a diaphragm 31, a reinforcing portion 32 and two brackets 33, which are disposed opposite to the magnetic circuit system 2, a central portion of the diaphragm 31 includes a connecting portion 312 formed with an opening 313, the two brackets 33 are connected to opposite sides of the reinforcing portion 32, each bracket 33 includes a fixing portion 331 connected to an edge of the reinforcing portion 32 and an extending portion 333 connected to the fixing portion 331 and extending downward, the two fixing portions 331 and the reinforcing portion 32 are connected to the connecting portion 312 and exposed to the opening 313, and the extending portion 333 is located in the gap 24; the balance assembly 4 is disposed corresponding to the gap 24, and one end of the balance assembly 4 is connected to the housing assembly 1, and the other end is connected to the extending portion 333.
In the present embodiment, the housing assembly 1 is used for mounting, fixing and protecting the magnetic circuit system 2, the vibration system 3, the balance assembly 4 and other components of the speaker unit 100, and the structure of the housing assembly 1 may have a structure of a housing, a casing, a mounting case, a mounting bracket and the like which accommodate the cavity 1a, and is not limited herein.
As shown in fig. 1 to 6, the housing assembly 1 includes a bottom shell 11 and an outer shell 12, wherein a supporting arm 111 is protruded from a periphery of the bottom shell 11, the outer shell 12 includes a side portion 121 and a bottom portion 122, the side portion 121 is disposed corresponding to the supporting arm 111, and forms the accommodating cavity 1a with the bottom shell 11. It will be appreciated that the bottom portion 122 is formed by bending the end of the side portion 121 adjacent to the supporting arm 111 into the accommodating chamber 1 a.
In this embodiment, the magnetic circuit system 2 is disposed on the bottom case 11 of the housing assembly 1 and located in the accommodating cavity 1a, and the magnetic circuit system 2 is disposed at an interval from the supporting arm 111 of the bottom case 11. It will be understood that the bottom shell 11 is used for fixing and mounting the magnetic circuit system 2, and the supporting arms 111 are convexly provided on the periphery of the bottom shell 11, so that the supporting arms 111 can be connected with the housing 12 to form the accommodating cavity 1 a. The magnetic circuit system 2 is fixedly arranged on one side of the bottom case 11 facing the accommodating cavity 1a, and is spaced from the supporting arm 111.
It can be understood that, when the casing 12 of the housing assembly 1 is a metal member, the magnetic circuit system 2 and the casing 12 are fixed by adhesion. In other embodiments, when the casing 12 is formed by plastic injection molding, the magnetic-side conducting plate of the magnetic circuit system 2 is first injection-molded in the casing 12 as an insert, and then the other parts are bonded and fixed. In the present embodiment, the case assembly 1 is configured as a two-part structure of the bottom case 11 and the outer case 12, so that the magnetic circuit system 2 and the vibration system 3 are conveniently mounted, and the mounting convenience of the speaker unit 100 is improved.
In one embodiment, as shown in fig. 3 and 6, a gap 24 is formed between the magnetic circuit system 2 and the side wall of the accommodating chamber 1 a. It will be understood that magnetic circuit system 2 is disposed on the side of bottom shell 11 of case assembly 1 facing accommodating cavity 1a, and forms a gap 24 with support arms 111 of bottom shell 11 and side portions 121 of housing 12.
In an embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 8, the diaphragm 31 of the vibration system 3 includes a central portion, a folded ring portion 311 disposed around the central portion, and a fixing portion disposed around the folded ring portion 311, where the fixing portion is formed by extending the outer side edge of the folded ring portion 311 downward, and the fixing portion of the diaphragm 31 is fixedly connected with the outer side wall of the side portion 121, so that the connection stability of the fixing portion and the housing 12 can be improved, the waterproof performance can be improved, and the effective vibration area of the diaphragm 31 can be increased.
In this embodiment, the central portion of the diaphragm 31 includes a connecting portion 312 integrally disposed with the loop portion 311, the connecting portion 312 is formed by bending and extending the inner side edge of the loop portion 311 toward the reinforcing portion 32, and the connecting portion 312 encloses the opening 313; one side of the bracket 33 is connected to the connecting portion 312, and the other side of the bracket 33 is connected to the reinforcing portion 32. It is understood that the opposite sides of the reinforcing portion 32, where the bracket 33 is not provided, and the connecting portion 312 of the diaphragm 31 are fixed by adhesive bonding through an adhesive layer.
In this embodiment, the ring folding portion 311 of the diaphragm 31 may be a convex ring structure, or a concave ring structure, i.e. the cross section of the ring folding portion 311 is a semicircular structure that protrudes upwards or is a semicircular structure that is recessed downwards, so as to facilitate the vibration of the diaphragm 31, thereby realizing sound production. The connecting portion 312 is located inside the folded ring portion 311, that is, is formed by bending and extending the inner side edge of the folded ring portion 311 toward the reinforcing portion 32.
It can be understood that, the edge of the folded ring portion 311 is raised towards one side deviating from the voice coil, and the fixing portion is formed by the downward extension of the outer side edge of the folded ring portion 311, so as to facilitate the fixing connection with the outer side wall 121 of the housing 1, thereby reducing the fixing area of the vibrating diaphragm 31 in the horizontal direction, effectively improving the effective vibration area of the vibrating diaphragm 31, and improving the acoustic performance of the speaker monomer 100.
In the present embodiment, as shown in fig. 2, fig. 3, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 11, each of the brackets 33 includes a fixing portion 331 and an extending portion 333, the fixing portion 331 is connected to the connecting portion 312 and the reinforcing portion 32 and is partially exposed from the opening 313, and the extending portion 333 extends toward the bottom wall of the accommodating cavity 1a and is located in the gap 24.
It can be understood that, by arranging the bracket 33 as two parts of the fixing portion 331 and the extending portion 333 arranged at an included angle, the fixing portion 331 of the bracket 33 is connected with the connecting portion 312 and the reinforcing portion 32 of the diaphragm 31, and the extending portion 333 of the bracket 33 extends toward the bottom wall of the accommodating cavity 1a and is located in the gap 24, so that the bracket 33 is used to improve the connection strength between the diaphragm 31 and the reinforcing portion 32, thereby further improving the acoustic performance of the speaker unit 100.
The speaker unit 100 of the present invention has the magnetic circuit system 2 disposed in the accommodating cavity 1a of the housing assembly 1, and a gap 24 is formed between the magnetic circuit system and the sidewall of the accommodating cavity 1a, so that the diaphragm 31 and the reinforcing portion 32 of the vibration system 3 are disposed opposite to the magnetic circuit system 2, and a connecting portion 312 having an opening 313 is disposed at the central portion of the diaphragm 31, and the reinforcing portion 32 is disposed corresponding to the opening 313; meanwhile, by providing the two brackets 33, the two brackets 33 are connected to opposite sides of the reinforcing part 32, so that the brackets 33 and the reinforcing part 32 are designed to be separated, and thus it is ensured that the material of the brackets 33 is not affected by the reinforcing part 32, so that the material of the brackets 33 is more freely selected, and the fixing part 331 of the bracket 33 is connected to the edge of the reinforcing part 32, the extending part 332 of the bracket 33 is connected to the fixing part 331 and extends downward into the gap 24, so that the two fixing parts 331 and the reinforcing part 32 are connected to the connecting part 312 and exposed to the opening 313, so that the bracket 33 and the reinforcing part 32 are matched and filled in the opening 313 of the diaphragm 31, and thus the strength of the central radiation area of the diaphragm 31 is effectively enhanced by the brackets 33 and the reinforcing part 32, and the high-frequency performance of the speaker unit 100 is better.
In an embodiment, as shown in fig. 3, 5, 6, 8, 9, 10, and 11, a first step 332 is disposed at an end of the fixing portion 331 away from the extending portion 333, a second step 321 is disposed at the reinforcing portion 32, and the first step 332 and the second step 321 are in limit abutment.
It can be understood that, by providing the first step 332 on the fixing portion 331 of the bracket 33 and providing the second step 321 on the reinforcing portion 32, on one hand, the first step 332 and the second step 321 are in limit contact, so as to realize the connection between the fixing portion 331 of the bracket 33 and the reinforcing portion 32; on the other hand, the first step 332 and the second step 321 are matched to ensure that the fixing portion 331 is located on the same plane after being connected with the reinforcement portion 32, so that the height difference is avoided, the central portion of the diaphragm is not increased by extra thickness, and the influence on the acoustic performance of the speaker unit 100 due to the vibration performance when the diaphragm 31 drives the reinforcement portion 32 to vibrate through the fixing portion 331 of the bracket 33 is avoided.
In the present embodiment, the surface of the fixing portion 331 facing away from the extending portion 333 is flush with the surface of the reinforcing portion 32 facing away from the magnetic circuit system.
In an embodiment, as shown in fig. 3, 6, 9 and 11, a connection portion between the fixing portion 331 and the extending portion 333 is configured to be in a circular arc transition. It can be understood that such an arrangement is advantageous to improve the connection strength between the fixing portion 331 of the bracket 33 and the extending portion 333; on the other hand, the connection between the fixing portion 331 of the support 33 and the extending portion 333 is prevented from generating a sharp corner, thereby scratching the diaphragm 31 or affecting the connection with the diaphragm 31.
In this embodiment, the extending portion 333 is formed by bending and extending one end of the fixing portion 331 away from the reinforcing portion 32 toward a side away from the diaphragm 31.
In an embodiment, as shown in fig. 2, 3, 5, 6, 7, 8, 9 and 11, the bracket 33 further includes a bending portion 334, the bending portion 334 is formed by bending one end of the extending portion 333 away from the fixing portion 331, and an extending direction of the bending portion 334 is opposite to an extending direction of the fixing portion 331; the bent portion 334 is connected to one end of the balance member 4.
In the embodiment, by providing the bending portion 334, the bending portion 334 is formed by bending an end of the extending portion 333 away from the fixing portion 331, on one hand, a tip structure of the end of the extending portion 333 away from the fixing portion 331 is avoided, so as to improve stability of assembly and connection with other structures; on the other hand, the structure of the extending portion 333 far from the end of the fixing portion 331 is prevented from scratching or affecting the assembly of other structures.
In one embodiment, as shown in fig. 2, 3, 5 and 6, the balance assembly 4 includes a centering disk 41 and an auxiliary diaphragm 42, wherein the centering disk 41 is disposed in the gap 24 and connected to the housing assembly 1; two flat portions 421 deviating from the extension are disposed on two opposite sides of the auxiliary diaphragm 42, one of the flat portions 421 is connected to the centering disk 41, and the other flat portion 421 is located in the gap 24 and connected to one end of the extension portion 333 far away from the fixing portion 331.
In the present embodiment, the centering disk 41 and the auxiliary diaphragm 42 of the balance assembly 4 are disposed in the accommodating chamber 1a of the housing assembly 1, are located in the gap between the magnetic circuit system 2 and the support arm 111 and the side portion 121, and are disposed opposite to the diaphragm 31. It can be understood that the centralizer plates 41 include the mounting portion 412 and the elastic portion 413 connected to the mounting portion 412, and the mounting portion 412 of the centralizer plates 41 is interposed between the support arm 111 and the bottom portion 122, thereby improving the mounting stability of the centralizer plates 41. The elastic portion 413 of the spider 41 is connected to one end of the extension 333 positioned in the gap 24, thereby further improving the connection stability of the bracket 33.
It can be understood that two opposite sides of the auxiliary diaphragm 42 are provided with two flat portions 421 extending away from each other, that is, the auxiliary diaphragm 42 includes a ring folding segment and two flat portions 421 integrally provided with the ring folding segment, and the two flat portions 421 are provided on two opposite sides of the ring folding segment. The flat portion 421 of the auxiliary diaphragm 42 is connected to the mounting portion 412 of the damper 41 and interposed between the support arm 111 and the bottom portion 122, thereby improving the mounting stability of the auxiliary diaphragm 42. The other straight portion 421 of the auxiliary diaphragm 42 is located in the gap 24 and connected to an end of the extending portion 333 away from the fixing portion 331, thereby further improving the connection stability of the bracket 33.
In this embodiment, the balance assembly 4 composed of the centering disk 41 and the auxiliary diaphragm 42 is disposed in the accommodating chamber 1a, so that the vibration of the diaphragm 31 is transmitted to the auxiliary diaphragm 42 and the elastic portion 413 of the centering disk 41 by the support 33, the vibration condition of the vibration system 3 is improved by the auxiliary diaphragm 42 and the elastic portion 413, and the diaphragm 31 is prevented from swinging left and right in the vibration process, thereby affecting the sound production effect.
In an embodiment, as shown in fig. 1, fig. 2, fig. 4, and fig. 5, the speaker unit 100 is a rectangular ring, the speaker unit 100 includes two long sides disposed opposite to each other and two short sides disposed opposite to each other, the auxiliary diaphragm 42 includes two, and one auxiliary diaphragm 42 is disposed corresponding to one of the supports 33.
It can be understood that the speaker unit 100 is a rectangular ring, two long sides of the speaker unit 100 are opposite, two short sides are opposite, and each long side is connected with a short side in sequence, and the enclosure forms a rectangular ring structure, at this moment, the auxiliary vibrating diaphragm 42 of the balance assembly 4 is provided with two, and each auxiliary vibrating diaphragm 42 is arranged corresponding to one of the supports 33.
In an embodiment, as shown in fig. 1, fig. 2, fig. 3, fig. 7, and fig. 8, two auxiliary diaphragms 42 are symmetrically disposed and respectively correspond to two long sides. It can be understood that two auxiliary diaphragms 42 are respectively disposed corresponding to the two long sides, and in this case, two brackets 33 correspond to the two auxiliary diaphragms 42 and are disposed corresponding to the two long sides of the speaker unit 100.
In another embodiment, as shown in fig. 4, 5, 6 and 9, two auxiliary diaphragms are symmetrically disposed and respectively correspond to two short sides. It is understood that two auxiliary diaphragms 42 are respectively disposed corresponding to two short sides, and in this case, two brackets 33 are disposed corresponding to two auxiliary diaphragms 42 and corresponding to two short sides of the speaker unit 100.
In an embodiment, as shown in fig. 5, the centering disk 41 is disposed in a ring shape, and the auxiliary diaphragm 42 includes two, and one of the auxiliary diaphragms 42 is disposed corresponding to one of the brackets 33.
In the present embodiment, the housing 12 of the housing assembly 1 has a rectangular ring structure, and correspondingly, the diaphragm 31 has a rectangular ring structure, and the reinforcing portion 32 has a rectangular plate structure. It is understood that the diaphragm 31 and the reinforcing portion 32 have two corresponding long sides and two short sides, and the two brackets 33 may be disposed between the two corresponding long sides of the diaphragm 31 and the reinforcing portion 32; the two brackets 33 may also be disposed between two corresponding short sides of the diaphragm 31 and the reinforcing portion 32, which is not limited herein.
It will be appreciated that the spider 41 is annularly disposed, i.e., the contour of the spider 41 is the same as the contour of the bottom 122 of the housing 12. At this time, the auxiliary diaphragms 42 include two auxiliary diaphragms 42, the two auxiliary diaphragms 42 are symmetrically disposed, and for facilitating the support 33 to transmit the vibration of the diaphragm 31 and the reinforcement part 32 to the auxiliary diaphragms 42, one of the auxiliary diaphragms 42 is disposed corresponding to one of the supports 33.
It is to be understood that when two supports 33 are disposed between the two long sides corresponding to the diaphragm 31 and the reinforcing portion 32, two auxiliary diaphragms 42 are disposed corresponding to the two supports 33 and adjacent to the two long sides corresponding to the diaphragm 31 and the reinforcing portion 32. When two brackets 33 are disposed between the two corresponding short sides of the diaphragm 31 and the reinforcing portion 32, two auxiliary diaphragms 42 are disposed corresponding to the two brackets 33 and adjacent to the two corresponding short sides of the diaphragm 31 and the reinforcing portion 32.
In one embodiment, as shown in fig. 3 and 6, the vibration system 3 further includes a voice coil 34, the magnetic circuit system 2 is provided with a magnetic gap 2a, one end of the voice coil 34 is connected to the side of the reinforcement portion 32 facing the magnetic circuit system 2, and the other end of the voice coil 34 is suspended in the magnetic gap 2 a.
In this embodiment, magnetic circuit 2 is provided with magnetic gap 2a, and vibration system 3 is still including hanging voice coil 34 of locating in magnetic gap 2a, so make voice coil 34 and external circuit switch on, utilize voice coil 34 to transmit electric energy to magnetic gap 2a of magnetic circuit 2, make the magnetic field that magnetic circuit 2 produced convert the electric energy into mechanical energy, thereby make voice coil 34 take place the vibration, and drive vibration system 3's vibrating diaphragm 31 and reinforcement portion 32 and realize the vibration sound production, further convert mechanical energy into acoustic energy. That is, after the voice coil 34 disposed in the magnetic gap 2a receives the externally varying alternating current signal, the voice coil makes a reciprocating motion of cutting the magnetic lines of force under the driving of the magnetic field force of the magnetic circuit system 2, so as to drive the diaphragm 31 of the vibration system 3 to vibrate and generate sound.
In an embodiment, as shown in fig. 5 and 6, the damper 41 is disposed in an annular shape, the damper 41 is made of FPCB, the damper 41 includes an installation portion 412 and an elastic portion 413, the installation portion 412 is connected to the housing assembly 1, the elastic portion 413 is connected to the extension portion 333, a cantilever 411 is protruded from the elastic portion 413, the cantilever 411 is bent, extended and fixed along the extension portion 333 and the fixing portion 331, and the voice coil 34 is extended from one end of the adjacent reinforcing portion 32 and electrically connected to the cantilever 411.
In the present embodiment, the damper 41 is made of FPCB, that is, the mounting portion 412 and the elastic portion 413 of the damper 41 are made of FPCB and are disposed in a ring shape. By providing the cantilever 411 on the elastic portion 413 of the spider 41, the cantilever 411 is bent, extended and fixed along the extending portion 333 and the fixing portion 331, so as to facilitate connection between the cantilever 411 and a lead extending from an end of the voice coil 34 adjacent to the reinforcing portion 32, and thus, the voice coil 34 can be electrically connected to an external circuit by using the spider 41. In the present embodiment, the cantilever 411 passes through the gap 24 and is connected to an end of the voice coil 34 adjacent to the reinforcement portion 32, so as to prevent the voice coil 34 from contacting other parts of the magnetic circuit system 2 and causing short circuit during conduction with an external circuit.
In an embodiment, as shown in fig. 2, the centering disk 41 includes two, and the auxiliary diaphragm 42 includes two, and one centering disk 41 and one auxiliary diaphragm 42 are disposed corresponding to one bracket 33.
It is understood that, in order to save material cost of the centering disk 41 and simplify the structure of the centering disk 41, the centering disk 41 includes two centering disks 41, the two centering disks 41 are symmetrically arranged, and in order to facilitate the support 33 to transmit the vibration of the diaphragm 31 and the reinforcement part 32 to the centering disk 41 and the auxiliary diaphragm 42, the centering disk 41 and the auxiliary diaphragm 42 are arranged corresponding to one support 33.
In the present embodiment, when two brackets 33 are disposed between two long sides corresponding to the diaphragm 31 and the reinforcing portion 32, two centering pads 41 and two auxiliary diaphragms 42 are disposed corresponding to the two brackets 33 and adjacent to the two long sides corresponding to the diaphragm 31 and the reinforcing portion 32. When the two brackets 33 are disposed between the two corresponding short sides of the diaphragm 31 and the reinforcing portion 32, the two centering pads 41 and the two auxiliary diaphragms 42 are disposed corresponding to the two brackets 33 and adjacent to the two corresponding short sides of the diaphragm 31 and the reinforcing portion 32.
In this embodiment, a conductive trace is disposed on the bracket 33, a first pad connected to the conductive trace is disposed on the fixing portion 331, and a second pad connected to the conductive trace is disposed on the extending portion 333; the voice coil 34 is connected to the first pad by a lead wire extending from an end adjacent to the reinforcement portion 32, and the spider 41 is electrically connected to the second pad.
It is understood that, by providing the first pad on the fixing portion 331 of the support 33 and the second pad on the extending portion 333, the first pad and the second pad are connected to the conductive traces on the support 33, and by connecting the first pad of the support 33 to the lead wire extending from the end of the voice coil 34 adjacent to the reinforcing portion 32, the spider 41 is electrically connected to the second pad, so that the voice coil 34 is connected to the external circuit through the support 33 and the spider 41.
In an embodiment, as shown in fig. 2, 3, 5 and 6, the magnetic circuit system 2 includes a magnetic yoke 21, a central magnetic conductive portion 22 and an annular magnetic conductive portion 23, wherein the magnetic yoke 21 is disposed in the accommodating cavity 1 a; the central magnetic conductive part 22 is provided on the side of the magnetic conductive yoke 21 facing the reinforcement part 32; the annular magnetic conduction part 23 is disposed on one side of the magnetic conduction yoke 21 facing the reinforcement part 32, and is disposed to surround the central magnetic conduction part 22, and a magnetic gap 2a is formed between the annular magnetic conduction part 23 and the central magnetic conduction part 22.
In the present embodiment, the magnetic yoke 21 is fixed to the bottom case 11 of the housing assembly 1, the central magnetic conductive portion 22 and the annular magnetic conductive portion 23 are disposed on one side of the magnetic yoke 21 facing the reinforcing portion 32, and the annular magnetic conductive portion 23 is disposed around the central magnetic conductive portion 22 and forms a magnetic gap 2a with the central magnetic conductive portion 22, so that the voice coil 34 is conveniently suspended in the magnetic gap 2 a.
In one embodiment, as shown in fig. 2, 3, 5 and 6, the central magnetic conductive 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 conducting portion 23 includes an annular edge magnet 231 and an annular edge magnetic conducting plate 232, the annular edge magnet 231 is clamped between the magnetic conducting yoke 21 and the annular edge magnetic conducting plate 232, and the annular edge magnetic conducting plate 232 is connected to the side wall of the accommodating cavity 1 a.
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. 2 and 5, the annular edge magnetic conductive plate 232 is connected to the bottom 122 of the housing 12, and a via hole structure is formed between the annular edge magnetic conductive plate 232 and the bottom 122, so as to facilitate the processing of the annular edge magnetic conductive plate 232 and the housing 12. In this embodiment, the casing 12 and the annular magnetic conducting plate 232 are made of metal materials, so as to improve the heat conduction and dissipation effects.
In one embodiment, the bracket 33 is made of a metal material. Optionally, the metal material of the bracket 33 is one of aluminum, aluminum magnesium alloy, aluminum lithium alloy, and titanium alloy. Of course, in other embodiments, the bracket 33 may also be made of rigid plastic, carbon fiber, etc., and is not limited herein.
The vibration system 3 of the speaker unit 100 of the present invention is composed of a diaphragm 31, a reinforcing portion 32, a bracket 33 and a voice coil 34, wherein the reinforcing portion 32 and the bracket 33 are respectively bonded to the diaphragm 31, the bracket 33 is composed of a fixing portion 331, an extending portion 333 and a bending portion 334, the fixing portion 331 and the reinforcing portion 32 of the bracket 33 together constitute a central radiation area of the vibration system 3 of the speaker unit 100, and the extending portion 333 and the bending portion 334 of the bracket 33 connect the top diaphragm 31 and the centering pad 41 and the auxiliary diaphragm 42 of the bottom balance assembly 4.
It can be understood that, by using the fixing portion 331 of the bracket 33 and the reinforcing portion 32 to act as a dome of the diaphragm 31 of the speaker unit 100, the strength of the central radiation area of the diaphragm 31 can be effectively enhanced, so that the high-frequency performance of the speaker unit 100 is better. Meanwhile, the bracket 33 and the reinforcing part 32 jointly serve as a dome, so that the space of the speaker unit 100 in the Z-axis direction is not occupied, and the acoustic performance of the speaker unit 100 is improved. Further, the support 33 is utilized to act as a dome for the diaphragm 31 in combination with the reinforcing portion 32, so that the support 33 can perform both a dome function and a coupling function of the diaphragm 31 and the centering pad 41 and the auxiliary diaphragm 42 of the balance member 4.
In the present embodiment, the magnetic circuit system 2 is an annular magnetic circuit as a whole, and a relief space is left in the long side region of the annular magnetic conductive portion 23 for the damper 41 and the auxiliary diaphragm 42 of the balance assembly 4. The extending portion 333 and the bending portion 334 of the bracket 33 are inserted into the via hole avoiding space between the annular magnetic conducting portion 23 and the bottom portion 122 of the casing 12, and are located outside the annular magnetic conducting plate 232. The bent portion of the bracket 33 is fixedly connected with the inner bonding areas of the centering disk 41 and the auxiliary diaphragm 42, so that the bracket 33 is used for integrally connecting the upper vibration system and the lower vibration system.
It can be understood that the centering disk 41 and the auxiliary diaphragm 42 of the balance assembly 4 are distributed on the long side of the speaker unit 100, and the projected area of the diaphragm 31 is larger, so that the ability of suppressing the vibration system 3 from generating the wobble polarization is better. Meanwhile, the support 33, the centering disk 41 and the auxiliary diaphragm 42 are located on the outer side of the magnetic circuit system 2, so that the space of the magnetic circuit system 2 is less affected, and the magnetic circuit performance is easier and fully utilized. In an embodiment, the elastic portion of the centering disk 41 starts from one end of the short side, bends and gradually extends toward the center of the long side, and finally converges at the pad in the middle of the long side, so as to achieve the purpose of preventing the diaphragm 31 from generating the swing polarization and also achieve the conductive connection with the voice coil 32 or the support 33.
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 cell, comprising:
the shell assembly is provided with an accommodating cavity;
the magnetic circuit system is arranged in the accommodating cavity, and a gap is formed between the magnetic circuit system and the side wall of the accommodating cavity;
the vibration system comprises a vibration diaphragm, a reinforcing part and two supports, wherein the vibration diaphragm, the reinforcing part and the two supports are arranged opposite to the magnetic circuit system, the central part of the vibration diaphragm comprises a connecting part with an opening, the two supports are connected to two opposite sides of the reinforcing part, each support comprises a fixing part connected with the edge of the reinforcing part and an extending part connected with the fixing part and extending downwards, the two fixing parts and the reinforcing part are connected with the connecting part and exposed out of the opening, and the extending part is positioned in the gap; and
and the balance assembly is used for balancing the vibration system and corresponds to the gap, one end of the balance assembly is connected with the shell assembly, and the other end of the balance assembly is connected with the extension part.
2. The speaker unit as claimed in claim 1, wherein the fixing portion has a first step at an end thereof away from the extending portion, the reinforcing portion has a second step, and the first step and the second step are in limit abutment.
3. The speaker unit as claimed in claim 1, wherein the bracket further includes a bending portion formed by bending an end of the extending portion away from the fixing portion, and an extending direction of the bending portion is opposite to an extending direction of the fixing portion;
the bending part is connected with one end of the balance component.
4. The speaker cell of claim 1, wherein the balance assembly comprises:
the centering support piece is arranged in the gap and is connected with the shell assembly; and
the relative both sides of supplementary vibrating diaphragm are equipped with two straight portions that extend from opposite directions, one straight portion with the centering branch piece is connected, another straight portion is located the clearance, and with the extension is kept away from the one end of fixed part is connected.
5. The speaker cell as claimed in claim 4, wherein the speaker cell is a rectangular ring, the speaker cell comprising two oppositely disposed long sides and two oppositely disposed short sides; the auxiliary vibrating diaphragms comprise two, one auxiliary vibrating diaphragm is arranged corresponding to one support;
the two auxiliary diaphragms are symmetrically arranged and respectively correspond to the two long sides; or the two auxiliary diaphragms are symmetrically arranged and respectively correspond to the two short sides.
6. The speaker unit as claimed in claim 4, wherein the vibration system further comprises a voice coil, the magnetic circuit system is provided with a magnetic gap, one end of the voice coil is connected to the side of the reinforcement portion facing the magnetic circuit system, and the other end of the voice coil is suspended in the magnetic gap;
the centering piece is made for the FPCB, the centering piece includes installation department and elasticity portion, the installation department with casing assembly connects, elasticity portion with the extension is connected, elasticity portion epirelief is equipped with the cantilever, the cantilever along the extension with the fixed part is buckled and is extended and fixed, the voice coil loudspeaker voice coil is by neighbouring the one end of reinforcement portion stretch out the lead wire with the cantilever electricity is connected.
7. The speaker unit as claimed in claim 4, wherein the vibration system further comprises a voice coil, the magnetic circuit system is provided with a magnetic gap, one end of the voice coil is connected to the side of the reinforcement portion facing the magnetic circuit system, and the other end of the voice coil is suspended in the magnetic gap;
the centering support piece is made of FPCB, a conducting circuit is arranged on the support, a first bonding pad connected with the conducting circuit is arranged on the fixing portion, and a second bonding pad connected with the conducting circuit is arranged on the extending portion;
the voice coil is connected with the first bonding pad through a lead extending out of one end adjacent to the reinforcing part, and the centering support piece is electrically connected with the second bonding pad.
8. The speaker cell as claimed in claim 1, wherein the magnetic circuit system comprises:
the magnetic conduction yoke is arranged in the accommodating cavity;
the central magnetic conduction part is arranged on one side, facing the reinforcement part, of the magnetic conduction yoke; and
and the annular magnetic conduction part is arranged on one side, facing the reinforcement part, of the magnetic conduction yoke and surrounds the central magnetic conduction part, and a magnetic gap is formed between the annular magnetic conduction part and the central magnetic conduction part.
9. The speaker cell as claimed in claim 8, wherein the central magnetically permeable portion comprises a central magnet and a central magnetically permeable plate, the central magnet being sandwiched between the magnetic yoke and the central magnetically permeable plate;
and/or, annular magnetic conduction portion includes annular limit magnet and annular limit magnetic conduction board, annular limit magnet presss from both sides to locate the magnetic conduction yoke with between the annular limit magnetic conduction board, annular limit magnetic conduction board with the lateral wall that holds the chamber is connected.
10. The speaker cell as claimed in any one of claims 1 to 9, wherein the support is made of a metallic material.
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.
CN202010906741.1A 2020-08-31 2020-08-31 Speaker monomer and electronic terminal Active CN111988711B (en)

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CN112492457B (en) * 2020-12-25 2022-04-26 瑞声新能源发展(常州)有限公司科教城分公司 Loudspeaker
CN116887145B (en) * 2023-08-10 2024-01-26 汉得利（常州）电子股份有限公司 Magnetic circuit structure and double-sided loudspeaker

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