WO2022006975A1 - 振膜及扬声器 - Google Patents

振膜及扬声器 Download PDF

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Publication number
WO2022006975A1
WO2022006975A1 PCT/CN2020/102620 CN2020102620W WO2022006975A1 WO 2022006975 A1 WO2022006975 A1 WO 2022006975A1 CN 2020102620 W CN2020102620 W CN 2020102620W WO 2022006975 A1 WO2022006975 A1 WO 2022006975A1
Authority
WO
WIPO (PCT)
Prior art keywords
reinforcing ring
diaphragm
ring
basin frame
folded
Prior art date
Application number
PCT/CN2020/102620
Other languages
English (en)
French (fr)
Inventor
梁平
赵彬
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 瑞声声学科技(深圳)有限公司, 瑞声科技(新加坡)有限公司 filed Critical 瑞声声学科技(深圳)有限公司
Publication of WO2022006975A1 publication Critical patent/WO2022006975A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present application relates to the technical field of acoustics and electricity, and in particular, to a diaphragm and a loudspeaker.
  • the magnetic loudspeaker may include a vibro-acoustic system with a voice coil and a diaphragm and a magnetic circuit system with a magnetic circuit, the vibrating-acoustic system includes a voice coil and a diaphragm, and the voice coil is connected to an external circuit through a flexible circuit board
  • the magnetic circuit system In order to receive the electrical signal and generate a first magnetic field, the magnetic circuit system generates a second magnetic field, and the interaction of the first magnetic field and the second magnetic field makes the diaphragm vibrate to emit sound.
  • the molding size of the diaphragm periphery of the loudspeaker in the prior art is usually larger than the actual size, and a positioning edge may be extended toward the basin frame, so as to perform tooling-assisted positioning with the basin frame.
  • the positioning edge of the diaphragm is formed, the dimensional accuracy is not high, and the assembly concentricity and consistency are poor. It is also necessary to increase the laser cutting non-gluing surface area, which leads to increased resource investment and waste of diaphragm raw materials.
  • the purpose of the present application is to provide a diaphragm and a loudspeaker that can improve at least one of the above technical problems.
  • a vibrating membrane comprising a folded ring portion and at least one reinforcing ring connecting the inner and/or outer peripheries of the folded ring portion, wherein the thickness of the reinforcing ring is greater than that of the folded ring portion thickness of.
  • the reinforcing ring and the folded ring portion are integrally formed.
  • the reinforcing ring is formed by air explosion, compression molding or injection molding.
  • the reinforcing ring is made of the same material as the folded ring portion; the material of the reinforcing ring includes at least one of silica gel, rubber, polyether ether ketone, and thermoplastic polyurethane elastomer rubber.
  • the loudspeaker includes a vibration system, a magnetic circuit system for producing sound in cooperation with the vibration system, and a basin frame for fixing the vibration system and the magnetic circuit system, and the vibration system includes any one of the above-mentioned components. diaphragm.
  • the reinforcing ring is connected to the outer peripheral edge of the folded ring portion, the basin frame includes a first end surface adjacent to the diaphragm, and the reinforcing ring is disposed on the first end surface.
  • the reinforcing ring includes a first surface adjacent to the basin frame, a second surface disposed opposite to the first surface, and an outer surface connecting the first surface and the second surface
  • the The basin frame also includes an outer side surface connected to the first end surface, the part of the outer side surface connected to the first end surface is flush with the outer surface of the reinforcing ring, and the dimensions of the first surface and the second surface are Consistent with the size of the first end face.
  • the diaphragm further comprises a connecting part with an opening or another reinforcing ring connected to the inner periphery of the folded ring part
  • the speaker further comprises a ball arranged on the connecting part or the other reinforcing ring the top
  • the spherical top is arranged on the side of the connecting part or another reinforcing ring far away from the basin frame, and the surface of the connecting part or another reinforcing ring is far from the spherical top and the reinforcing ring
  • the second surface of the ring is on the same plane, wherein the thickness of the other reinforcing ring is greater than the thickness of the folded ring portion.
  • the basin frame includes an annular side wall and an extension portion connected to the annular side wall and extending toward the inner side, the extension portion having a through hole;
  • the vibration system further includes a frame, a voice coil, a circuit board and another a diaphragm, the voice coil is sleeved on the periphery of the frame, the frame and the voice coil also pass through the through hole, and the other diaphragm is sleeved outside the frame and is located away from the basin frame
  • one end of the circuit board is electrically connected to the voice coil through the skeleton, and the other end is used to electrically connect external components.
  • the magnetic circuit system includes a magnetic steel, a pole core and a magnetic yoke, the magnetic steel and the pole core are arranged in layers, and the magnetic steel and the pole core are at least partially located in the area surrounded by the skeleton.
  • a receiving cavity, the magnetic yoke supports the magnetic steel and the pole core and is located on the side of the basin frame away from the diaphragm.
  • the diaphragm includes a folded ring portion and at least one reinforcement ring connecting the inner and/or outer peripheries of the folded ring portion, since the thickness of the reinforcement ring is greater than the thickness of the folded ring portion Therefore, it is more convenient to carry out tooling positioning through components such as the reinforcing ring and the basin frame, so as to ensure the assembly accuracy, concentricity and consistency. Moreover, on the basis of convenient tool positioning, better assembly accuracy, concentricity and consistency, the size of the reinforcing ring does not need to be larger than the actual size, and furthermore, it is not necessary to increase the laser ablation step, and it will not lead to an increase in the size of the reinforcing ring. Resource input and waste of diaphragm raw materials and other issues.
  • the reinforcing ring and the folded ring portion are integrally formed. It can be understood that the reinforcing ring and the folded ring portion of the integrally formed structure are easier to assemble than the separately formed structure, and do not need to consider the problem of assembling and positioning.
  • the reinforcing ring is formed by air explosion, compression molding or injection molding. It can be understood that the above-mentioned integrated molding technology is relatively mature, so that the molding quality of the reinforcing ring can be guaranteed.
  • the material of the reinforcing ring is the same as that of the folded ring portion; the material of the reinforcing ring includes at least one of silica gel, rubber, polyether ether ketone, and thermoplastic polyurethane elastomer rubber. Understandably, it can be understood that when the reinforcing ring and the folded ring portion are made of the same material, the manufacture of the reinforcing ring and the folded ring portion can be facilitated. For example, it can be formed by an integral molding technique, which is beneficial to cost control. In addition, the above-mentioned materials are also relatively common and have good characteristics, which are beneficial to the vibration and sound of the diaphragm.
  • the reinforcing ring is connected to the outer peripheral edge of the folded ring portion, the basin frame includes a first end surface adjacent to the diaphragm, and the reinforcing ring is disposed on the first end surface.
  • the reinforcing ring is arranged on the first end surface, and since the thickness of the reinforcing ring is greater than the thickness of the folded ring portion, it is more convenient to make the tooling positioning of the reinforcing ring and the first end surface , to ensure assembly accuracy, concentricity and consistency.
  • the size of the reinforcing ring does not need to be larger than the actual size, and furthermore, it is not necessary to increase the laser ablation step, and it will not lead to an increase in the size of the reinforcing ring. Resource input and waste of diaphragm raw materials and other issues.
  • the reinforcing ring includes a first surface adjacent to the basin frame, a second surface disposed opposite to the first surface, and an outer surface connecting the first surface and the second surface
  • the The basin frame also includes an outer surface connected to the first end surface, and the part of the outer surface connected to the first end surface is flush with the outer surface of the reinforcing ring; the dimensions of the first surface and the second surface Consistent with the size of the first end face.
  • the part of the outer surface connecting the first end surface is flush with the outer surface of the reinforcement ring, that is, the size of the reinforcement ring does not need to be larger than the actual size, and furthermore, there is no need to add a laser cutting step, and It will not lead to problems such as increased resource investment and waste of diaphragm raw materials.
  • the dimensions of the first surface and the second surface are consistent with the dimensions of the first end surface, so that the effect of the basin frame supporting the diaphragm stably can be achieved.
  • the diaphragm further includes a connecting portion with an opening or another reinforcing ring connected to the inner periphery of the folded ring portion
  • the speaker further includes a ball arranged on the connecting portion or another reinforcing ring.
  • the spherical top may be disposed on the side of the connecting portion or another reinforcing ring that is far away from the basin frame, and the surface of the connecting portion or another reinforcing ring that is far away from the spherical top is in contact with the The second surface of the reinforcing ring is in the same plane.
  • the dome and the other reinforcing ring can improve the acoustic performance of the speaker, and the surface of the connecting portion or the other reinforcing ring on the side away from the dome and the first surface of the reinforcing ring The two surfaces are on the same plane, which can also make the overall structural balance of the diaphragm and the dome assembled after being better, and further ensure the acoustic performance of the speaker.
  • the basin frame includes an annular side wall and an extension portion connected to the annular side wall and extending toward the inner side, the extension portion having a through hole;
  • the vibration system further includes a frame, a voice coil, a circuit board and another a diaphragm, the voice coil is sleeved on the periphery of the frame, the frame and the voice coil also pass through the through hole, and the other diaphragm is sleeved outside the frame and is located away from the basin frame
  • one end of the circuit board is electrically connected to the voice coil through the skeleton, and the other end is used to electrically connect external components.
  • the speaker further includes another diaphragm, which can further improve the acoustic performance of the speaker; and the voice coil is sleeved on the periphery of the skeleton, and one end of the circuit board is electrically connected to the sound through the skeleton. The other end is used to electrically connect external components, so that two diaphragms, voice coils and circuit boards are fixed on the one hand through the skeleton, and the voice coil can be electrically connected to the circuit board through the skeleton. While ensuring fixed strength, it can also ensure electrical signal transmission.
  • the magnetic circuit system includes a magnetic steel, a pole core and a magnetic yoke, the magnetic steel and the pole core are arranged in layers, and the magnetic steel and the pole core are at least partially located in the area surrounded by the skeleton.
  • a receiving cavity, the magnetic yoke supports the magnetic steel and the pole core and is located on the side of the basin frame away from the diaphragm. It can be understood that the magnetic steel and the pole core are at least partially located in the receiving cavity enclosed by the skeleton, which also enables the magnetic circuit system to be firmly combined with the vibration system, and has better compactness and acoustics. performance.
  • FIG. 1 is a perspective view of a speaker according to an embodiment of the application.
  • Fig. 2 is the stereo exploded schematic diagram of the loudspeaker shown in Fig. 1;
  • FIG. 3 is a schematic cross-sectional view of the loudspeaker shown in FIG. 1 along line III-III;
  • FIG. 4 is a schematic cross-sectional view of a speaker according to another embodiment of the present application.
  • FIG. 5 is a schematic cross-sectional view of a speaker according to still another embodiment of the present application.
  • speaker 10 speaker 10; vibration system 12; magnetic circuit system 14; basin frame 16; annular side wall 162; extension 164; through hole 164a; first end surface 162a; ; Skeleton 122; Voice coil 124; Circuit board 126; Another diaphragm 128; Folding ring portion 120a; Reinforcing ring 120b; ; magnet 142; pole core 144; yoke 146.
  • FIG. 1 is a perspective view of a speaker 10 provided by an embodiment of the present application
  • FIG. 2 is a perspective exploded schematic view of the speaker 10 shown in FIG. 1
  • FIGS. 3-5 are several embodiments of the present application.
  • the loudspeaker 10 includes a vibration system 12 , a magnetic circuit system 14 for producing sound with the vibration system 12 , and a basin frame 16 for fixing the vibration system 12 and the magnetic circuit system 14 .
  • the basin frame 16 includes an annular side wall 162 and an extension portion 164 connected to the annular side wall 162 and extending toward the inner side.
  • the extension portion 164 has a through hole 164 a.
  • the annular side wall 162 includes a first end surface 162a on a side away from the magnetic circuit system 14 and an outer side surface 162b connected to the first end surface 162a.
  • the vibration system 12 further includes a diaphragm 120 , a dome 121 , a frame 122 , a voice coil 124 , a circuit board 126 and another diaphragm 128 .
  • the vibrating membrane 120 is disposed on the side of the basin frame 16 away from the magnetic circuit system 14 , and can be used as the upper vibrating membrane of the vibrating system 12 .
  • the diaphragm 120 may include a ring portion 120a and at least one reinforcing ring 120b connected to the inner periphery and/or the outer periphery of the ring portion 120a, and the thickness of the reinforcing ring 120b is greater than the thickness of the ring portion 120a .
  • the folded ring portion 120 protrudes toward the side away from the magnetic circuit system 14 , and the reinforcing ring 120b may be a plane ring shape.
  • the number of the reinforcing ring 120b includes one, and the reinforcing ring 120b may be connected to the outer peripheral edge of the folded ring portion 120a.
  • the reinforcing ring 120b may also be connected to the inner periphery of the folded ring portion 120a.
  • the number of the reinforcing rings 120b includes two, and the two reinforcing rings 120b are respectively connected to the inner peripheral edge and the outer peripheral edge of the folding ring portion 120a. As shown in FIG.
  • the number of the reinforcing ring 120b includes one, and the reinforcing ring 120b can be connected to the inner periphery of the folded ring portion 120a, and the outer periphery of the folded ring portion 120a is connected to a support ring 120h , the support ring 120h is used to be disposed on the basin frame 16, and the thickness of the support ring 120h may be consistent with the thickness of the folded ring portion 120a.
  • the reinforcing ring 120b is formed by air explosion, compression molding or injection molding.
  • the reinforcing ring 120b and the folded ring portion 120a are integrally formed, and the reinforcing ring 120b and the folded ring portion 120a are made of the same material. Therefore, the reinforcing ring 120b and the folded ring portion 120b can use gas explosion , compression molding or injection molding process integrated molding.
  • the material of the reinforcing ring 120b includes at least one of silica gel, rubber, polyether ether ketone PEEK, thermoplastic polyurethane elastomer rubber TPU and other polymer materials.
  • the reinforcing ring 120b may be comprising a first surface 120c adjacent to the basin frame 16, a second surface 120d disposed opposite to the first surface 120c, and an outer surface 120e connecting the first surface 120c and the second surface 120d, the The portion of the outer side surface 162b of the basin frame 16 connected to the first end surface 162a may be flush with the outer surface 120e of the reinforcing ring 120b; the size of the first surface 120c and the second surface 120d may be the same as that of the The size of the one end surface 162a is the same.
  • the diaphragm 120 further includes a connecting portion 120f with an opening 120g connected to the inner peripheral edge of the folded ring portion 120a, and the dome 121 is disposed in the corresponding opening 120g.
  • the connecting portion 120f is on the side away from the basin frame 16, and the surface of the connecting portion 120f on the side away from the dome 121 and the second surface 120d of the reinforcing ring 120b are on the same plane.
  • the reinforcing ring 120b having an opening 120g is connected to the inner periphery of the folded ring portion 120a.
  • the reinforcing ring 120b connected to the inner periphery of the folded ring portion 120a may be The spherical top 121 is supported, that is, the spherical top 121 is disposed on the side of the reinforcing ring 120b connected to the inner periphery of the folded ring portion 120a away from the basin frame 16 corresponding to the opening 120g.
  • the thickness of the two reinforcing rings 120b may both be greater than the thickness of the folding ring portion 120a.
  • the thicknesses of the two reinforcing rings 120b may be the same, and the two reinforcing rings 120b are adjacent to the basin frame The surfaces on one side of 16 may be in the same plane.
  • the reinforcing ring 120b may be substantially the same in structure as the reinforcing ring 120b shown in FIG.
  • the dome 121 that is, the dome 121 is disposed on a side of the reinforcing ring 120b away from the basin frame 16 corresponding to the opening 120g.
  • the surface of the support ring 120h and the reinforcement ring 120b adjacent to the basin frame 16 may be on the same plane.
  • the voice coil 124 is sleeved on the periphery of the frame 122, the frame 122 and the voice coil 124 also pass through the through hole 164a, and the other diaphragm 128 is sleeved outside the frame 122 and located at A side of the basin frame 16 away from the vibrating film 120 is located.
  • One end of the circuit board 126 is electrically connected to the voice coil 124 through the frame 122 , and the other end is used to electrically connect to external components.
  • the skeleton 122 and the voice coil 124 may both be cylindrical rings, and the material may be metal, and the inner diameter of the voice coil 124 is approximately the same as the outer diameter of the skeleton 122 , so that The voice coil 124 can be just sleeved and fixed on the periphery of the skeleton 122 and is electrically connected with the skeleton 122 , and the circuit board 126 can be fixed on the periphery of the skeleton 122 and electrically connected with the skeleton 122 .
  • the circuit board 126 may be electrically connected to the voice coil 124 through the bobbin 122 .
  • the circuit board 126 may be bonded and fixed on the frame 122 through a glue 129, and the glue 129 may also be a conductive glue.
  • the ring portion 128a of the diaphragm 128 may protrude toward the side where the magnetic circuit system 14 is located, and the diaphragm 128 may also be sleeved on the frame 122 and communicate with the circuit board 126 and the circuit board 126 .
  • the frame 122 is bonded and fixed by the glue 129 .
  • the magnetic circuit system 14 may include a magnetic steel 142 , a pole core 144 and a magnetic yoke 146 , the magnetic steel 142 and the pole core 144 may be stacked, and the magnetic steel 142 and the pole core 144 are at least partially arranged.
  • the magnetic yoke 146 Located in the receiving cavity surrounded by the inner ring of the frame 122, the magnetic yoke 146 supports the magnetic steel 142 and the pole core 144 and is located on the side of the basin frame 12 away from the diaphragm 120.
  • the yoke 146 also supports one end of the basin frame 16 away from the diaphragm 120 .
  • the magnetic steel 142 may be located between the pole core 144 and the magnetic yoke 146 , and the magnetic yoke 146 may further include a concave portion formed toward the side away from the vibration system 12 .
  • the ring portion 128a of the diaphragm 128 can be accommodated in the portion.
  • the diaphragm 120 includes a folded ring portion 120a and at least one reinforcement ring 120b connected to the inner and/or outer peripheries of the folded ring portion 120a, because the thickness of the reinforcement ring 120b is greater than that of all the reinforcement rings 120b.
  • the thickness of the folded ring portion 120a can be easily positioned by the reinforcing ring 120b and the basin frame 16 and other components, so as to ensure assembly accuracy, concentricity and consistency.
  • the size of the reinforcing ring 120b does not need to be larger than the actual size, and furthermore, it is not necessary to increase the laser cutting step, and it will not cause Increased resource investment and waste of diaphragm raw materials and other issues.
  • reinforcing ring 120b and the folding ring portion 120a are integrally formed. It can be understood that the reinforcing ring 120b and the folded ring portion 120a of the integrally formed structure are easier to assemble than the separately formed structure, and do not need to consider the problem of assembling and positioning.
  • the reinforcing ring 120b is formed by air explosion, compression molding or injection molding. It can be understood that the above-mentioned integrated molding technology is relatively mature, so that the molding quality of the reinforcing ring 120b can be guaranteed.
  • the material of the reinforcing ring 120b is the same as that of the folded ring portion 120a; the material of the reinforcing ring 120b includes at least one of silica gel, rubber, polyetheretherketone, and thermoplastic polyurethane elastomer rubber. Understandably, it can be understood that when the reinforcing ring 120b and the folded ring portion 120a are made of the same material, the manufacture of the reinforcing ring 120b and the folded ring portion 120a can be facilitated. control. In addition, the above-mentioned materials are also relatively common and have good characteristics, which are beneficial to the vibration and sound of the diaphragm 120 .
  • the reinforcing ring 120b is connected to the outer periphery of the folded ring portion 120a, the basin frame 16 includes a first end surface 162a adjacent to the diaphragm 120, and the reinforcing ring 120b is disposed on the first end surface 162a. It can be understood that the reinforcing ring 120b is disposed on the first end surface 162a. Since the thickness of the reinforcing ring 120b is greater than the thickness of the folded ring portion 120a, it is convenient to make the reinforcing ring 120b and the first end face 162a. One end face 162a performs tooling positioning to ensure assembly accuracy, concentricity and consistency.
  • the size of the reinforcing ring 120b does not need to be larger than the actual size, and furthermore, it is not necessary to increase the laser cutting step, and it will not cause Increased resource investment and waste of diaphragm raw materials and other issues.
  • the reinforcing ring 120b includes a first surface 120c adjacent to the basin frame 16, a second surface 120d disposed opposite to the first surface 120c, and connecting the first surface 120c and the second surface
  • the outer surface 120e of 120d, the portion of the outer side surface 162b of the basin frame 16 connecting the first end surface 162a is flush with the outer surface 120e of the reinforcing ring 120b; the first surface 120c and the second
  • the size of the surface 120d is consistent with the size of the first end face 162a.
  • the portion of the outer side surface 162b connected to the first end surface 262a is flush with the outer surface 120e of the reinforcing ring 120b, that is, the size of the reinforcing ring 120b does not need to be larger than the actual size, and therefore does not need to be increased.
  • the laser cutting step will not lead to problems such as increased resource investment and waste of diaphragm raw materials.
  • the dimensions of the first surface 120c and the second surface 120d are the same as the dimensions of the first end surface 162a, which can achieve the effect of the basin frame 16 supporting the diaphragm 120 stably.
  • the diaphragm 120 further includes a connecting portion 120f with an opening 120g or a reinforcing ring 120b connected to the inner peripheral edge of the folded ring portion 120a, and the dome 121 is disposed on the connecting portion corresponding to the opening 120g 120f or the side of the reinforcing ring 120b away from the basin frame 16, and the surface of the connecting portion 120f or the reinforcing ring 120b away from the dome 121 is the same as the second surface 120d of the other reinforcing ring 120b on flat surface.
  • the dome 121 and the two reinforcing rings 120b can improve the acoustic performance of the speaker 10, and the surface of the connecting portion 120f or the reinforcing ring 120b away from the dome 121 and the other surface
  • the second surface of the reinforcing ring 120b is on the same plane, which can also make the overall structural balance of the diaphragm 120 and the dome 121 assembled after being better, and further ensure the acoustic performance of the speaker 10 .
  • the speaker 10 further includes another diaphragm 128, which can further improve the acoustic performance of the speaker 10; and the voice coil 124 is sleeved on the periphery of the skeleton 122, and the circuit board 126 One end is electrically connected to the voice coil 124 through the skeleton 122, and the other end is used to electrically connect external components, so that the two diaphragms 120, 128, the voice coil 124 and the circuit board 126 are fixed on the one hand through the skeleton 122, and also Therefore, the voice coil 124 can be electrically connected to the circuit board 126 through the skeleton 122, which can ensure the transmission of electrical signals while ensuring the fixed strength.
  • the magnetic steel 142 and the pole core 144 are at least partially located in the receiving cavity enclosed by the skeleton 122, so that the magnetic circuit system 12 and the vibration system 14 are combined stably, and have good performance. compactness and acoustic performance.

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

Abstract

本申请提供了一种振膜及扬声器。所述振膜包括折环部及连接所述折环部的内周缘及/或外周缘的至少一增强环，所述增强环的厚度大于所述折环部的厚度。本申请的振膜及扬声器可以方便工装定位，保证装配精度、同心度与一致性，也可以改善增加资源投入与浪费振膜原材料等问题。

Description

振膜及扬声器 技术领域
本申请涉及声电技术领域，尤其涉及一种振膜及扬声器。
 背景技术
随着移动互联网时代的到来，智能移动终端的数量不断上升。而在众多智能移动终端之中，穿戴类设备及手机无疑是最常见、最便携的移动终端。目前，穿戴类设备及手机的功能极其多样，其中之一便是高品质的音乐功能，因此，用于播放声音的扬声器被大量应用到现在的智能移动终端之中。
扬声器包括磁式扬声器、静电扬声器、压电扬声器等多种类型。其中，磁式扬声器被广泛应用在现在的智能移动终端中组件。其中，磁式扬声器可以包括具有音圈和振膜的振声***及具有磁路的磁路***，所述振声***包括音圈和振膜，所述音圈通过软性电路板连接外部电路以接收电信号并产生第一磁场，所述磁路***产生第二磁场，所述第一磁场与所述第二磁场相互作用使得所述振膜振动而发出声音。
然而，现有技术的扬声器的振膜周缘的成型尺寸通常较实际尺寸偏大，并可朝向盆架伸出定位边，以便与盆架进行工装辅助定位。然而，振膜的定位边成型后尺寸精度不高，装配同心度与一致性差，还需要增加激光切除非胶合面区域，导致增加资源投入与浪费振膜原材料。
因此，有必要提供一种可改善上述至少一个技术问题的振膜及扬声器。
 技术问题
本申请的目的在于提供一种可改善上述至少一个技术问题的振膜及扬声器。
 技术解决方案
本申请的技术方案如下：一种振膜，其包括折环部及连接所述折环部的内周缘及/或外周缘的至少一增强环，所述增强环的厚度大于所述折环部的厚度。
优选地，所述增强环与所述折环部为一体成型结构。
优选地，所述增强环采用气爆、模压成型或注塑成型工艺形成。
优选地，所述增强环与所述折环部材料相同；所述增强环的材料包括硅胶、橡胶、聚醚醚酮、热塑性聚氨酯弹性体橡胶中的至少一种。
优选地，所述扬声器包括振动***、配合所述振动***发声的磁路***、及固定所述振动***与所述磁路***的盆架，所述振动***包括根据上述任意一项所述的振膜。
优选地，所述增强环连接在所述折环部的外周缘，所述盆架包括邻近所述振膜的第一端面，所述增强环设置于所述第一端面上。
优选地，所述增强环包括邻近所述盆架的第一表面、与所述第一表面相背设置的第二表面及连接所述第一表面与所述第二表面的外表面，所述盆架还包括连接所述第一端面的外侧面，所述外侧面连接所述第一端面的部分与所述增强环的外表面平齐，所述第一表面及所述第二表面的尺寸与所述第一端面的尺寸一致。
优选地，所述振膜还包括连接在所述折环部的内周缘的具有开口的连接部或另一增强环，所述扬声器还包括设置于所述连接部或另一增强环上的球顶；所述球顶设置于所述连接部或另一增强环远离所述盆架的一侧，且所述连接部或另一增强环远离所述球顶一侧的表面与所述增强环的第二表面在同一平面上，其中，所述另一增强环的厚度大于所述折环部的厚度。
优选地，所述盆架包括环形侧壁及连接所述环形侧壁且朝向内侧延伸的延伸部，所述延伸部具有通孔；所述振动***还包括骨架、音圈、电路板及另一振膜，所述音圈套设于所述骨架***，所述骨架及所述音圈还穿过所述通孔，所述另一振膜套设于所述骨架外且位于所述盆架远离所述振膜的一侧，所述电路板的一端通过所述骨架电连接所述音圈，另一端用于电连接外部元件。
优选地，所述磁路***包括磁钢、极芯及磁轭，所述磁钢与所述极芯层叠设置，且所述磁钢与所述极芯且至少部分位于所述骨架围成的收容腔，所述磁轭支撑所述磁钢与所述极芯且位于所述盆架远离所述振膜的一侧。
 有益效果
本申请的有益效果在于：所述振膜包括折环部及连接所述折环部的内周缘及/或外周缘的至少一增强环，由于所述增强环的厚度大于所述折环部的厚度，因此可以较为方便通过所述增强环与盆架等元件进行工装定位，保证装配精度、同心度与一致性。而且，在工装定位方便、装配精度、同心度与一致性较佳的基础上，所述增强环的尺寸也可以不需要较实际尺寸大，进而也不需要增加激光切除步骤，也不会导致增加资源投入与浪费振膜原材料等问题。
进一步地，所述增强环与所述折环部为一体成型结构。可以理解，一体成型结构的所述增强环与所述折环部较分体成型的结构组装方便、且不需要考虑组装定位问题。
进一步地，所述增强环采用气爆、模压成型或注塑成型工艺形成。可以理解，上述一体成型技术也较为成熟，使得所述增强环的成型品质可以得到保证。
进一步地，所述增强环与所述折环部材料相同；所述增强环的材料包括硅胶、橡胶、聚醚醚酮、热塑性聚氨酯弹性体橡胶中的至少一种。可以理解，可以理解，所述增强环与所述折环部材料相同时，可以方便所述增强环与所述折环部的制造，如可以采用一体成型技术成型，有利于成本的控制。此外，上述材料也较为常见且具有较好的特性，有利于振膜的振动发声。
优选地，所述增强环连接在所述折环部的外周缘，所述盆架包括邻近所述振膜的第一端面，所述增强环设置于所述第一端面上。可以理解，所述增强环设置于所述第一端面上，由于所述增强环的厚度大于所述折环部的厚度，因此可以较为方便使得所述增强环与所述第一端面进行工装定位，保证装配精度、同心度与一致性。而且，在工装定位方便、装配精度、同心度与一致性较佳的基础上，所述增强环的尺寸也可以不需要较实际尺寸大，进而也不需要增加激光切除步骤，也不会导致增加资源投入与浪费振膜原材料等问题。
进一步地，所述增强环包括邻近所述盆架的第一表面、与所述第一表面相背设置的第二表面及连接所述第一表面与所述第二表面的外表面，所述盆架还包括连接所述第一端面的外侧面，所述外侧面连接所述第一端面的部分与所述增强环的外表面平齐；所述第一表面及所述第二表面的尺寸与所述第一端面的尺寸一致。可以理解，所述外侧面连接所述第一端面的部分与所述增强环的外表面平齐，即所述增强环的尺寸不需要较实际尺寸大，进而也不需要增加激光切除步骤，也不会导致增加资源投入与浪费振膜原材料等问题。所述第一表面及所述第二表面的尺寸与所述第一端面的尺寸一致，可以达到盆架对所述振膜稳靠支撑的效果。
进一步地，所述振膜还包括连接在所述折环部的内周缘的具有开口的连接部或另一增强环，所述扬声器还包括设置于所述连接部或另一增强环上的球顶；具体地，所述球顶可以设置于所述连接部或另一增强环远离所述盆架的一侧，且所述连接部或另一增强环远离所述球顶一侧的表面与所述增强环的第二表面在同一平面上。可以理解，所述球顶及所述另一增强环可以提升所述扬声器的声学性能，并且，所述连接部或另一增强环远离所述球顶一侧的表面与所述增强环的第二表面在同一平面上，也可以使得所述振膜及所述球顶组装后的整体结构平衡性较佳，进一步保证所述扬声器的声学性能。
优选地，所述盆架包括环形侧壁及连接所述环形侧壁且朝向内侧延伸的延伸部，所述延伸部具有通孔；所述振动***还包括骨架、音圈、电路板及另一振膜，所述音圈套设于所述骨架***，所述骨架及所述音圈还穿过所述通孔，所述另一振膜套设于所述骨架外且位于所述盆架远离所述振膜的一侧，所述电路板的一端通过所述骨架电连接所述音圈，另一端用于电连接外部元件。可以理解，所述扬声器还包括另一振膜，可进一步提升所述扬声器的声学性能；并且所述音圈套设于所述骨架***，所述电路板的一端通过所述骨架电连接所述音圈，另一端用于电连接外部元件，使得通过所述骨架一方面固定两个振膜、音圈及电路板等，还使得所述音圈可通过所述骨架电连接所述电路板，在保证固定强度的同时，也可保证电性信号传输。
进一步地，所述磁路***包括磁钢、极芯及磁轭，所述磁钢与所述极芯层叠设置，且所述磁钢与所述极芯且至少部分位于所述骨架围成的收容腔，所述磁轭支撑所述磁钢与所述极芯且位于所述盆架远离所述振膜的一侧。 可以理解，所述磁钢与所述极芯且至少部分位于所述骨架围成的收容腔，也使得所述磁路***与所述振动***稳靠结合，并且具有较好的紧凑性及声学性能。
 附图说明
图1为本申请一种实施例的扬声器的立体图；
图2为图1所示扬声器的立体分解示意图；
图3是图1所示扬声器沿线III-III的剖面示意图；
图4是本申请另一种实施例的扬声器的剖面示意图；
图5是本申请又一种实施例的扬声器的剖面示意图。
主要元件符号说明：扬声器10；振动***12；磁路***14；盆架16；环形侧壁162；延伸部164；通孔164a；第一端面162a；外侧面162b；振膜120；球顶121；骨架122；音圈124；电路板126；另一振膜128；折环部120a；增强环120b；第一表面120c；第二表面120d；外表面120e；开口120g；连接部120f；胶体129；磁钢142；极芯144；磁轭146。
 本发明的实施方式
下面结合附图和实施方式对本申请作进一步说明。
需要说明的是，本申请的说明书和权利要求书及上述附图中的术语“第一”、“第二”和“第三”等是用于区别不同对象，而非用于描述特定顺序。此外，术语“包括”以及它们任何变形，意图在于覆盖不排他的包含。例如包含了一系列步骤或单元的过程、方法、***、产品或设备没有限定于已列出的步骤或单元，而是可选地还包括没有列出的步骤或单元，或可选地还包括对于这些过程、方法、产品或设备固有的其它步骤或单元。
本申请实施例中所有方向性指示(诸如上、下、左、右、前、后、内、外、顶部、底部……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。当元件被称为“固定于”或“设置于”另一个元件上时，该元件可以直接在另一个元件上或者可能同时存在居中元件。当一个元件被称为“连接”另一个元件，它可以是直接连接另一个元件或者可能同时存在居中元件。
请参阅图1至图5，图1为本申请实施例提供的扬声器10的立体图； 图2为图1所示扬声器10的立体分解示意图；图3-5是本申请几种实施例提供扬声器10的剖面示意图，所述扬声器10包括振动***12、配合所述振动***12发声的磁路***14、及固定所述振动***12与所述磁路***14的盆架16。
所述盆架16包括环形侧壁162及连接所述环形侧壁162且朝向内侧延伸的延伸部164，所述延伸部164具有通孔164a。所述环形侧壁162包括位于远离所述磁路***14一侧的第一端面162a及连接所述第一端面162a的外侧面162b。
所述振动***12还包括振膜120、球顶121、骨架122、音圈124、电路板126及另一振膜128。
所述振膜120设置于所述盆架16远离所述磁路***14的一侧，可以作为所述振动***12的上振膜。
所述振膜120可以包括折环部120a及连接所述折环部120a的内周缘及/或外周缘的至少一增强环120b，所述增强环120b的厚度大于所述折环部120a的厚度。所述折环部120朝向远离所述磁路***14的一侧凸起，所述增强环120b可以为平面环状。
具体地，在一些实施例中，如图3所示，所述增强环120b的数量包括一个，且所述增强环120b可以连接于所述折环部120a的外周缘。然而，可以理解，在另一些实施例中，如图4及图5所示，所述增强环120b也可以连接于所述折环部120a的内周缘。其中，如图4所示，所述增强环120b的数量包括两个，所述两个增强环120b分别连接于所述折环部120a的内周缘与外周缘。如图5所示，所述增强环120b的数量包括一个，且所述增强环120b可以连接于所述折环部120a的内周缘，且所述折环部120a的外周缘连接一支撑环120h，所述支撑环120h用于设置在所述盆架16上，所述支撑环120h的厚度可以与所述折环部120a的厚度一致。
具体地，所述增强环120b采用气爆、模压成型或注塑成型工艺形成。所述增强环120b与所述折环部120a为一体成型结构，所述增强环120b与所述折环部120a材料相同，故，所述增强环120b与所述折环部120b可以采用气爆、模压成型或注塑成型工艺一体成型。其中，所述增强环120b的材料包括硅胶、橡胶、聚醚醚酮PEEK、热塑性聚氨酯弹性体橡胶TPU及其他高分子材料中的至少一种。
如图3及图4所示，对于连接在所述折环部120b的外周缘的所述增强环120b来说，其设置于所述第一端面162a上，具体地，所述增强环120b可以包括邻近所述盆架16的第一表面120c、与所述第一表面120c相背设置的第二表面120d及连接所述第一表面120c与所述第二表面120d的外表面120e，所述盆架16的外侧面162b连接所述第一端面162a的部分可以与所述增强环120b的外表面120e平齐；所述第一表面120c及所述第二表面120d的尺寸可以与所述第一端面162a的尺寸一致。
进一步地，如图3所示，所述振膜120还包括连接在所述折环部120a的内周缘的具有开口120g的连接部120f，所述球顶121对应所述开口120g设置于所述连接部120f远离所述盆架16的一侧，且所述连接部120f远离所述球顶121一侧的表面与所述增强环120b的第二表面120d在同一平面上。然而，如图4所示，连接在所述折环部120a的内周缘的为具有开口120g的增强环120b，此时，连接在所述折环部120a的内周缘的所述增强环120b可以支撑所述球顶121，即所述球顶121对应所述开口120g设置于连接在所述折环部120a的内周缘的所述增强环120b远离所述盆架16的一侧。另外，所述两个增强环120b厚度可以均大于所述折环部120a的厚度，具体地，所述两个增强环120b的厚度可以相同，且所述两个增强环120b邻近所述盆架16一侧的表面可以在同一平面上。
进一步地，如图5所示的实施例中，所述增强环120b可以与图4所示的连接在所述折环部120a的内周缘的所述增强环120b结构基本一致，用于支撑所述球顶121，即所述球顶121对应所述开口120g设置于所述增强环120b远离所述盆架16的一侧。另外，所述支撑环120h与所述增强环120b邻近所述盆架16的表面可以在同一平面上。
所述音圈124套设于所述骨架122***，所述骨架122及所述音圈124还穿过所述通孔164a，所述另一振膜128套设于所述骨架122外且位于所述盆架16远离所述振膜120的一侧，所述电路板126的一端通过所述骨架122电连接所述音圈124，另一端用于电连接外部元件。
如图2至图5所示，所述骨架122及所述音圈124可以均为圆柱环状，材料可以为金属，所述音圈124的内径与所述骨架122的外径大致相同，使得所述音圈124可以刚好套设固定于所述骨架122***并与所述骨架122电连接，所述电路板126可以固定在所述骨架122***并与所述骨架122电连接，进而所述电路板126可以通过所述骨架122与所述音圈124电连接。具体地，所述电路板126可以通过胶体129粘接固定在所述骨架122上，所述胶体129也可以是导电胶体。此外，所述振膜128的折环部128a可以朝向所述磁路***14所在的一侧凸起，所述振膜128也可以套设在所述骨架122上并与所述电路板126及所述骨架122通过所述胶体129粘接固定。
所述磁路***14可以包括磁钢142、极芯144及磁轭146，所述磁钢142与所述极芯144可以层叠设置，且所述磁钢142与所述极芯144且至少部分位于所述骨架122内环围成的收容腔，所述磁轭146支撑所述磁钢142与所述极芯144且位于所述盆架12远离所述振膜120的一侧，所述磁轭146还支撑所述盆架16远离所述振膜120的一端。具体地，所述磁钢142可以位于所述极芯144与所述磁轭146之间，所述磁轭146还可以包括朝向远离所述振动***12一侧凹陷形成的凹陷部，所述凹陷部可以***述振膜128的折环部128a。
本申请的有益效果在于：所述振膜120包括折环部120a及连接所述折环部120a的内周缘及/或外周缘的至少一增强环120b，由于所述增强环120b的厚度大于所述折环部120a的厚度，因此可以较为方便通过所述增强环120b与盆架16等元件进行工装定位，保证装配精度、同心度与一致性。而且，在工装定位方便、装配精度、同心度与一致性较佳的基础上，所述增强环120b的尺寸也可以不需要较实际尺寸大，进而也不需要增加激光切除步骤，也不会导致增加资源投入与浪费振膜原材料等问题。
进一步地，所述增强环120b与所述折环部120a为一体成型结构。可以理解，一体成型结构的所述增强环120b与所述折环部120a较分体成型的结构组装方便、且不需要考虑组装定位问题。
进一步地，所述增强环120b采用气爆、模压成型或注塑成型工艺形成。可以理解，上述一体成型技术也较为成熟，使得所述增强环120b的成型品质可以得到保证。
进一步地，所述增强环120b与所述折环部120a材料相同；所述增强环120b的材料包括硅胶、橡胶、聚醚醚酮、热塑性聚氨酯弹性体橡胶中的至少一种。可以理解，可以理解，所述增强环120b与所述折环部120a材料相同时，可以方便所述增强环120b与所述折环部120a的制造，如可以采用一体成型技术成型，有利于成本的控制。此外，上述材料也较为常见且具有较好的特性，有利于振膜120的振动发声。
优选地，所述增强环120b连接在所述折环部120a的外周缘，所述盆架16包括邻近所述振膜120的第一端面162a，所述增强环120b设置于所述第一端面162a上。可以理解，所述增强环120b设置于所述第一端面162a上，由于所述增强环120b的厚度大于所述折环部120a的厚度，因此可以较为方便使得所述增强环120b与所述第一端面162a进行工装定位，保证装配精度、同心度与一致性。而且，在工装定位方便、装配精度、同心度与一致性较佳的基础上，所述增强环120b的尺寸也可以不需要较实际尺寸大，进而也不需要增加激光切除步骤，也不会导致增加资源投入与浪费振膜原材料等问题。
进一步地，所述增强环120b包括邻近所述盆架16的第一表面120c、与所述第一表面120c相背设置的第二表面120d及连接所述第一表面120c与所述第二表面120d的外表面120e，所述盆架16的所述外侧面162b连接所述第一端面162a的部分与所述增强环120b的外表面120e平齐；所述第一表面120c及所述第二表面120d的尺寸与所述第一端面162a的尺寸一致。可以理解，所述外侧面162b连接所述第一端面262a的部分与所述增强环120b的外表面120e平齐，即所述增强环120b的尺寸不需要较实际尺寸大，进而也不需要增加激光切除步骤，也不会导致增加资源投入与浪费振膜原材料等问题。所述第一表面120c及所述第二表面120d的尺寸与所述第一端面162a的尺寸一致，可以达到盆架16对所述振膜120稳靠支撑的效果。
进一步地，所述振膜120还包括连接在所述折环部120a的内周缘的具有开口120g的连接部120f或增强环120b，所述球顶121对应所述开口120g设置于所述连接部120f或增强环120b远离所述盆架16的一侧，且所述连接部120f或增强环120b远离所述球顶121一侧的表面与另一所述增强环120b的第二表面120d在同一平面上。可以理解，所述球顶121及两个增强环120b可以提升所述扬声器10的声学性能，并且，所述连接部120f或增强环120b远离所述球顶121一侧的表面与另一所述增强环120b的第二表面在同一平面上，也可以使得所述振膜120及所述球顶121组装后的整体结构平衡性较佳，进一步保证所述扬声器10的声学性能。
进一步地，可以理解，所述扬声器10还包括另一振膜128，可进一步提升所述扬声器10的声学性能；并且所述音圈124套设于所述骨架122***，所述电路板126的一端通过所述骨架122电连接所述音圈124，另一端用于电连接外部元件，使得通过所述骨架122一方面固定两个振膜120、128、音圈124及电路板126等，还使得所述音圈124可通过所述骨架122电连接所述电路板126，在保证固定强度的同时，也可保证电性信号传输。
进一步地，所述磁钢142与所述极芯144且至少部分位于所述骨架122围成的收容腔，也使得所述磁路***12与所述振动***14稳靠结合，并且具有较好的紧凑性及声学性能。
以上所述的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (10)

1、一种振膜，其特征在于，所述振膜包括折环部及连接所述折环部的内周缘及/或外周缘的至少一增强环，所述增强环的厚度大于所述折环部的厚度。
2、根据权利要求1所述的振膜，其特征在于：所述增强环与所述折环部为一体成型结构。
3、根据权利要求1所述的振膜，其特征在于：所述增强环采用气爆、模压成型或注塑成型工艺形成。
4、根据权利要求1所述的振膜，其特征在于：所述增强环与所述折环部材料相同；所述增强环的材料包括硅胶、橡胶、聚醚醚酮、热塑性聚氨酯弹性体橡胶中的至少一种。
5、一种扬声器，其特征在于，所述扬声器包括振动***、配合所述振动***发声的磁路***、及固定所述振动***与所述磁路***的盆架，所述振动***包括根据权利要求1-4项任意一项所述的振膜。
6、根据权利要求5所述的扬声器，其特征在于：所述增强环连接在所述折环部的外周缘，所述盆架包括邻近所述振膜的第一端面，所述增强环设置于所述第一端面上。
7、根据权利要求6所述的扬声器，其特征在于：所述增强环包括邻近所述盆架的第一表面、与所述第一表面相背设置的第二表面及连接所述第一表面与所述第二表面的外表面，所述盆架还包括连接所述第一端面的外侧面，所述外侧面连接所述第一端面的部分与所述增强环的外表面平齐；所述第一表面及所述第二表面的尺寸与所述第一端面的尺寸一致。
8、根据权利要求7所述的扬声器，其特征在于：所述振膜还包括连接在所述折环部的内周缘的具有开口的连接部或另一增强环，所述扬声器还包括设置于所述连接部或另一增强环上的球顶；所述球顶设置于所述连接部远离所述盆架的一侧，且所述连接部或另一增强环远离所述球顶一侧的表面与所述增强环的第二表面在同一平面上，其中，所述另一增强环的厚度大于所述折环部的厚度。
9、根据权利要求6所述的扬声器，其特征在于：所述盆架包括环形侧壁及连接所述环形侧壁且朝向内侧延伸的延伸部，所述延伸部具有通孔；所述振动***还包括骨架、音圈、电路板及另一振膜，
所述音圈套设于所述骨架***，所述骨架及所述音圈还穿过所述通孔，所述另一振膜套设于所述骨架外且位于所述盆架远离所述振膜的一侧，所述电路板的一端通过所述骨架电连接所述音圈，另一端用于电连接外部元件。
10、根据权利要求9所述的扬声器，其特征在于：所述磁路***包括磁钢、极芯及磁轭，所述磁钢与所述极芯层叠设置，且所述磁钢与所述极芯且至少部分位于所述骨架围成的收容腔，所述磁轭支撑所述磁钢与所述极芯且位于所述盆架远离所述振膜的一侧。
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