WO2022036955A1 - 一种带音梁及音隧的全频段高音质平面谐振扬声器 - Google Patents

一种带音梁及音隧的全频段高音质平面谐振扬声器 Download PDF

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WO2022036955A1
WO2022036955A1 PCT/CN2020/136577 CN2020136577W WO2022036955A1 WO 2022036955 A1 WO2022036955 A1 WO 2022036955A1 CN 2020136577 W CN2020136577 W CN 2020136577W WO 2022036955 A1 WO2022036955 A1 WO 2022036955A1
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diaphragm
groove
sound
sound beam
region
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PCT/CN2020/136577
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English (en)
French (fr)
Inventor
金海鸥
吴念博
何新喜
朱信智
李碧英
杨萍
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苏州礼乐乐器股份有限公司
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Priority to EP20950156.8A priority Critical patent/EP4203503A1/en
Priority to US18/026,278 priority patent/US20230370779A1/en
Publication of WO2022036955A1 publication Critical patent/WO2022036955A1/zh

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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges
    • 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
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to a plane resonance loudspeaker, in particular to a full-frequency high-quality plane resonance loudspeaker with a sound beam and a sound tunnel.
  • a resonant speaker is a special speaker used in electronic products (such as smart speakers). It is usually used in conjunction with other speakers in the audio system. It can be assembled on the peripheral side of the main speaker to play an auxiliary role. Enhancement and enhancement help restore the original sound and improve sound fidelity.
  • the diaphragm 1 of the conventional planar resonant speaker is connected to the outer frame 3 of the speaker through elastic connecting members 2 (a rubber ring can be selected) around the diaphragm 1 . When the speaker is working, the vibration of the diaphragm 1 pushes the air to produce sound.
  • the common problem of traditional planar resonant speakers is that the speaker has an inherent resonant frequency when it produces sound. When it exceeds a certain range of the resonant frequency region, the high-pitched region cannot be bright, and the low-pitched region is not rich and round enough to achieve high-quality sound in the full frequency range.
  • the main reason is that the current loudspeaker diaphragm cannot satisfy the good broadband vibration from the treble region to the bass region, that is, it cannot simultaneously adapt to the resonance and vibration of wide frequency changes in the treble region, mid-range region and bass region.
  • the structural design of the traditional planar resonant loudspeaker is unreasonable, which is not conducive to the good sound wave vibration of the diaphragm from the treble region to the bass region.
  • the purpose of the present invention is to provide a full-frequency high-quality planar resonant speaker with sound beam and sound tunnel.
  • the technical scheme adopted in the present invention is:
  • a full-frequency high-quality plane resonant speaker with sound beam and sound tunnel comprising a vibrating membrane, the vibrating membrane is in the shape of a plane, the outer edge of the vibrating membrane is combined with the outer frame of the loudspeaker through an elastic connecting piece, and the middle part of the vibrating membrane is arranged corresponding to the sound source ;
  • a first groove and a second groove are arranged on at least one surface of the diaphragm, the first groove and the second groove are crossed on the surface of the diaphragm and pass through each other, and the intersection is located on the surface of the diaphragm. Center, and then divide the surface of the diaphragm into four resonance areas equally; the diaphragm is also provided with a sound beam assembly in the center of the same side surface where the first groove and the second groove are provided, and the sound beam assembly includes multiple A strip-shaped sound beam member, the strip-shaped sound beam members are arranged in pairs on both sides of the first groove and on both sides of the second groove; the first groove and the second groove are respectively in vibration Sound tunnels are formed on the surface of the membrane.
  • the "first groove and the second groove cross and penetrate each other on the surface of the diaphragm", which helps to pass the vibration of the sound source through the cross-shaped sound tunnel formed by the two grooves ( That is, the sound tunnel) is rapidly transmitted to the surrounding of the diaphragm.
  • the intersection of the first groove and the second groove is located in the center of the diaphragm, whereby the design can improve the sound quality and tone of the diaphragm.
  • a connecting beam is arranged between two adjacent strip-shaped sound beam members, and the connecting beam spans the top of the first groove and the second groove to form the sound beam.
  • the beam components are in a well-shaped shape; and each of the connecting beams is located in the central area of the surface of the diaphragm. With this design, the central area of the diaphragm can be reinforced.
  • the diaphragm is divided into the high-pitched area of the periphery, the mid-range area of the middle section and the low-frequency area of the center from the pronunciation frequency band; wherein, the wall thickness of the diaphragm is gradually thickened from the outside to the inside, forming the bass area
  • the wall thickness of the sound beam is greater than that of the mid-range area, and the wall thickness of the mid-range area is greater than the wall thickness of the treble area; the sound beam assembly is located in the low-frequency area.
  • the treble area is set away from the center, which can make the high-frequency vibration with higher frequency and smaller amplitude emit a more transparent and bright treble in the treble area of the diaphragm, thereby making the timbre, The sound quality has been effectively improved.
  • the thickness of the inner end of the strip-shaped sound beam member is larger than the thickness of the outer end.
  • the central area of the diaphragm can be reinforced.
  • the first groove and the second groove are arc-shaped grooves, which can minimize the sudden change in thickness of the diaphragm and avoid affecting the resonance and vibration of the diaphragm.
  • the lengths of the first groove and the second groove are both smaller than the horizontal width of the diaphragm, and the outer ends of the first groove and the second groove are connected to the diaphragm. There are smooth transition surfaces between the surfaces.
  • the present invention is a full-band high-quality plane resonant loudspeaker with sound beams and sound tunnels, which includes a vibrating membrane, which is in the shape of a plane, the outer edge of which is combined with the outer frame of the loudspeaker through an elastic connecting piece, and the middle of the loudspeaker is set corresponding to the sound source; There are first and second grooves on one surface, and the two grooves are crossed and penetrate each other, dividing the surface of the diaphragm into four resonance areas; the diaphragm is also provided with two grooves in the center of the same side surface.
  • the sound beam assembly includes a plurality of strip-shaped sound beam members, and the strip-shaped sound beam members are arranged in pairs on both sides of the first groove and on both sides of the second groove; the two grooves respectively form sound on the surface of the diaphragm tunnel.
  • the present invention designs the diaphragms in the existing planar resonant speakers, especially the planar resonant speakers. Improvements have been made. It is embodied in the following aspects: first, a sound beam assembly is erected on the surface of the diaphragm; second, a cross-shaped groove is formed on the surface of the diaphragm, thereby forming a cross-shaped sound tunnel on the surface of the diaphragm.
  • the invention deeply discusses and studies the design and sounding mechanism of the plane resonant loudspeaker, and finds out the high-pitched region and the sounding mechanism of the existing plane resonant loudspeaker.
  • the main reason for the poor sound in the bass region is due to the unreasonable design of the diaphragm. Accordingly, the inventor broke the constraints of the composition design of the previous planar resonant speaker, and boldly proposed an improved design scheme of the present invention.
  • This improved design scheme changes the diaphragm from the previous free vibration mode to the current standard vibration mode, from vibration
  • the angle of resonance and sound generation solves the problem that the high-pitched area of the plane resonant loudspeaker cannot be bright, and the low-pitched area is not thick and round enough.
  • Practice has proved that the improved design scheme has outstanding substantive characteristics and significant technical progress, and has obtained obvious technical Effect.
  • the present invention has the following advantages and effects compared with the existing planar resonant speakers:
  • the present invention sets the sound beam assembly on the surface of the vibrating membrane. Because the bass is relatively high in amplitude and low in frequency, the bass resonance is concentrated in the central area of the vibrating membrane, and the high-pitched resonance is concentrated in the surrounding edge area of the vibrating membrane, strengthening the center of the vibrating membrane. The intensity of the area plays an important role in improving the tone and sound quality of the bass area. Since the thickness of the diaphragm is thick in the central area and thin in the surrounding area, the thickness of the diaphragm is strengthened, and the strength of the central area of the diaphragm is strengthened. Relatively speaking, it also changes the thickness difference between the central area of the diaphragm and the surrounding edge area, which is also conducive to improving the tone and sound quality of the high-pitched area. can have a beneficial effect.
  • a cross-shaped groove is set on the surface of the vibrating film, and the cross-shaped groove actually forms a cross-shaped sound tunnel on the surface of the vibrating film. Tunnel) is rapidly transmitted to the surrounding edges of the diaphragm, which plays a key role in improving the timbre and sound quality of the treble region.
  • the vibration of the external sound source is first transmitted to the central area of the diaphragm, and then transmitted to each resonance area through the sound tunnel, and resonance and vibration are generated, so as to amplify the vibration of the external sound source into the resonance sound of the diaphragm .
  • Each resonance zone can generate one sound wave volume, plus one original sound wave volume, for a total of five sound wave volumes.
  • the volume of sound waves is the number of sound waves, and the volume of sound waves directly affects the timbre, penetration and volume of the diaphragm. Therefore, the design of the present invention can obviously improve the timbre of the high-pitched and low-pitched regions, and increase the penetration and volume of the high-pitched and low-pitched regions.
  • the sound beam assembly and the groove of the present invention can be arranged on the upper surface of the diaphragm, also can be arranged on the lower surface of the diaphragm, and can also be arranged on the upper and lower surfaces of the diaphragm at the same time.
  • FIG. 5 is a schematic diagram of the sound beam assembly according to the embodiment of the present invention when it is arranged on the upper surface of the diaphragm (without connecting beams);
  • FIG. 6 is a schematic diagram of the embodiment of the present invention when the sound beam assembly is simultaneously arranged on the upper and lower surfaces of the diaphragm (without connecting beams);
  • FIG. 9 is a schematic diagram (with connecting beams) when the sound beam assembly according to the embodiment of the present invention is arranged on the upper surface of the diaphragm;
  • FIG. 10 is a schematic diagram (with connecting beams) when the sound beam components are simultaneously arranged on the upper and lower surfaces of the diaphragm according to the embodiment of the present invention.
  • connecting may refer to two or more components or devices in direct physical contact with each other, or in indirect physical contact with each other, and may also refer to two or more components or devices interacting with each other or action.
  • a full-band high-quality planar resonant loudspeaker with sound beams and sound tunnels includes a vibrating membrane 4, the vibrating membrane 4 is in the shape of a plane, and its outer edge is combined with the loudspeaker through an elastic connecting piece 2
  • the outer frame 3, the middle of the diaphragm 4 is set corresponding to the sound source (such as the main speaker).
  • the lower surface of the diaphragm 4 is provided with a first groove 5 and a second groove 6 , and the two grooves respectively form a transverse sound tunnel and a longitudinal sound tunnel on the lower surface of the diaphragm 4 .
  • the first groove 5 and the second groove 6 cross each other on the lower surface of the diaphragm 4 and pass through each other.
  • the cross-shaped sound tunnel (that is, the sound tunnel) formed by , 6 is rapidly transmitted to the surrounding of the diaphragm 4 .
  • the intersection of the first groove 5 and the second groove 6 is located at the center of the diaphragm 4 , and the surface of the diaphragm 4 is equally divided into four resonance regions 7 .
  • the cross-shaped groove By opening a cross-shaped groove on the lower surface of the diaphragm 4, the cross-shaped groove actually forms a cross-shaped sound tunnel on the lower surface of the diaphragm 4, and the area close to the center collects the vibration of the external sound source, and then passes The cross-shaped sound tunnel is rapidly transmitted to the surrounding edges of the diaphragm 4, which plays a key role in improving the timbre and sound quality of the treble area.
  • the vibration can be transmitted to the four resonance regions 7 through the sound tunnel, and resonance is generated, which can significantly improve the timbre of the treble region and the bass region.
  • the center of the lower surface of the diaphragm 4 is further provided with a sound beam assembly 8,
  • the sound beam assembly 8 includes a plurality of strip-shaped sound beam members 8a, and the strip-shaped sound beam members 8a are arranged in pairs in the first groove 5 and both sides of the second groove 6 .
  • the bass resonance is concentrated in the central area of the diaphragm 4 and the treble resonance is concentrated in the surrounding edge area of the diaphragm 4 due to the large amplitude and low frequency of the bass relative to the treble, and the vibration is strengthened.
  • the strength of the central area of membrane 4 plays an important role in improving the tone and sound quality of the bass region.
  • the thickness of the diaphragm 4 is a thickness gradient structure in which the central area is thick and the surrounding area is thin (ie, the design is thin on the outside and thick on the inside), the strength of the central area of the diaphragm 4 is strengthened, and the central area and the surrounding edges of the diaphragm 4 are relatively changed.
  • the difference in the thickness of the area can also play a beneficial role in improving the tone and sound quality of the high-pitched area.
  • a connecting beam 8b is provided between two adjacent strip-shaped sound beam members 8a, and the connecting beam 8b spans the first groove 2, the second groove 2 and the second groove.
  • the sound beam assembly 8 is formed in a well-shaped shape; and each of the connecting beams 8 b is located in the central area of the surface of the diaphragm 4 .
  • a "mouth"-shaped reinforcing structure is formed by four connecting beams 8b, which can further strengthen the bass region in the center of the diaphragm 4, so as to further improve the sound quality of the bass region of the diaphragm 4.
  • the diaphragm 4 is divided into a peripheral high-pitched region, a mid-range mid-range and a central low-pitched region from the sound frequency band; wherein, the wall thickness of the diaphragm 4 is gradually increased from the outside to the inside, forming the low-pitched region.
  • the wall thickness is larger than that of the mid-range area, and the wall thickness of the mid-range area is larger than that of the treble area; by this design, by arranging the thicker bass area near the center, the frequency can be lower and the amplitude can be larger
  • the low-frequency vibration of the diaphragm 4 emits a thicker and rounder bass in the bass region of the diaphragm 4; by setting the thinner treble region away from the center, the high-frequency vibration with higher frequency and smaller amplitude can be made in the diaphragm 4.
  • the high-pitched range of the radiator produces clearer, brighter highs.
  • the sound beam assembly 8 is located in the bass region, which can further increase the load in the middle region of the diaphragm 4 .
  • the thickness of the inner end of the strip-shaped sound beam member 8a is greater than the thickness of the outer end.
  • the central region of the diaphragm 4 can be reinforced.
  • the first groove 5 and the second groove 6 are arc-shaped grooves, which can minimize the sudden change in thickness of the diaphragm 4 and avoid affecting the resonance and vibration of the diaphragm 4 .
  • the lengths of the first groove 5 and the second groove 6 are both smaller than the horizontal width of the diaphragm 4 , and the outer ends of the first groove 5 and the second groove 6 are the same as the diaphragm 4 .
  • a smooth transition surface is provided between the surfaces, so that the vibration can be transmitted to the periphery of the diaphragm 4 more evenly.
  • the resonant loudspeaker shown in the figure is only used for illustration, and its structure is not used to limit the protection scope of the present invention. If other resonant loudspeakers with similar structures adopt the technical features of the present invention, they should be covered in the present invention. within the scope of protection of the invention.
  • the number of the sound beam components 8 is not limited to one group, and can also be multiple groups of parallel or other designs that help to strengthen the load in the middle of the diaphragm 4, which is easily understood by those skilled in the art. and accepted.
  • the sound beam assembly 8 and the two grooves 5 and 6 can be located on the lower surface of the diaphragm 4 (as shown in FIGS. 4 and 8 ), or on the upper surface of the diaphragm 4 ( As shown in Figures 5 and 9), it can also be disposed on the upper and lower surfaces of the diaphragm 4 at the same time (as shown in Figures 6 and 10).
  • the strip-shaped sound beam members 8a can be straight strips as shown in the figure, two by two in a 90-degree combination, and arranged in pairs on both sides of the first groove 2 and the second groove. Both sides of slot 3.
  • the strip-shaped sound beam member 8a may also have an arc and include two straight sides, and the straight sides of the two adjacent sound beam members 8a may be paired in the first groove 2 and the second groove 3 on both sides.
  • both the first groove 5 and the second groove 6 are arc grooves.
  • the present invention is not limited to this, and the grooves can be designed into other shapes, such as concave structures such as V-shape, U-shape, and W-shape. This is easily understood and accepted by those skilled in the art.
  • the material of the diaphragm 4 can be metal material, carbon fiber material, paper and the like.
  • the present invention designs the diaphragms in the existing planar resonant speakers, especially the planar resonant speakers. Improvements have been made. It is embodied in the following aspects: first, a sound beam assembly is erected on the surface of the diaphragm; second, a cross-shaped groove is formed on the surface of the diaphragm, thereby forming a cross-shaped sound tunnel on the surface of the diaphragm.
  • the invention deeply discusses and studies the design and sounding mechanism of the plane resonant loudspeaker, and finds out the high-pitched region and the sounding mechanism of the existing plane resonant loudspeaker.
  • the main reason for the poor sound in the bass region is due to the unreasonable design of the diaphragm. Accordingly, the inventor broke the constraints of the composition design of the previous planar resonant speaker, and boldly proposed an improved design scheme of the present invention.
  • This improved design scheme changes the diaphragm from the previous free vibration mode to the current standard vibration mode, from vibration
  • the angle of resonance and sound generation solves the problem that the high-pitched area of the plane resonant loudspeaker cannot be bright, and the low-frequency area is not thick and round enough, and improves the fidelity of the sound in each frequency band.
  • Practice has proved that the improved design scheme has outstanding substantive characteristics and significant technological progress has been achieved, and significant technical effects have been achieved.

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Abstract

一种带音梁及音隧的全频段高音质平面谐振扬声器，包括振膜，呈平面状，其外缘通过弹性连接件结合于扬声器的外框，其中部对应声源设置；振膜的至少一表面上设有第一、第二沟槽，两沟槽呈十字交叉并且相互贯通，将振膜表面等分成四块共振区；振膜于设有两沟槽的同侧表面中央还设有音梁组件，包括多根条状音梁构件，条状音梁构件成对设置于第一沟槽的两侧以及第二沟槽的两侧；两沟槽分别在振膜的表面上形成音隧。本发明将振膜由以往的自由振动模式改变为现在的规范振动模式，从振动、共鸣、发声的角度解决了平面谐振扬声器高音区亮不出来，而低音区浑厚圆润不够的问题。实践证明该改进设计方案具有突出的实质性特点和显著的技术进步。

Description

一种带音梁及音隧的全频段高音质平面谐振扬声器 技术领域
本发明涉及平面谐振扬声器，具体涉及一种带音梁及音隧的全频段高音质平面谐振扬声器。
背景技术
谐振扬声器是一种应用于电子产品(如智能音箱)中的特殊扬声器，通常与音响中的其它扬声器配合使用，可装配于主扬声器的周侧部，起到辅助的作用，用于对音质进行加强和提升，有助于还原原声，提高声音保真度。如图1、2所述，传统的平面谐振扬声器的振膜1通过振膜1周边的弹性连接件2(可选用橡皮圈)连设于扬声器的外框3。扬声器在工作时，由振膜1的震动推动空气，从而发出声音。
传统的平面谐振扬声器普遍存在的问题是：扬声器发音时有一个固有的谐振频率，超出谐振频率区域的一定范围后，高音区亮不出来，低音区浑厚圆润不够，无法实现全频段的优质音色。究其原因主要是目前的扬声器振膜无法满足从高音区到低音区之间良好的宽频振动，即不能同时适应高音区、中音区和低音区较宽频率变化共鸣和振动。总结，传统的平面谐振扬声器其结构设计不合理，不利于振膜发挥从高音区到低音区之间良好声波振动。
因此，如何解决上述现有技术存在的不足，便成为本发明所要研究解决的课题。
发明内容
本发明的目的是提供一种带音梁及音隧的全频段高音质平面谐振扬声器。
为达到上述目的，本发明采用的技术方案是：
一种带音梁及音隧的全频段高音质平面谐振扬声器，包括振膜，所述振膜呈平面状，其外缘通过一弹性连接件结合于扬声器的外框，振膜的中部对应一声源设置；
所述振膜的至少一侧表面上设有第一沟槽和第二沟槽，第一沟槽与第二沟槽在振膜的表面上呈十字交叉且相互贯通，交叉点位于振膜的中心，进而将振膜的表面等分成四块共振区；所述振膜于设有第一沟槽和第二沟槽的同侧表面中央还设有音梁组件，所述音梁组件包括多根条状音梁构件，所述条状音梁构件成对设置于第一沟槽的两侧以及第二沟槽的两侧；所述第一沟槽与所述第二沟槽分别在振膜的表面上形成音隧。
上述技术方案中的有关内容解释如下：
1.上述方案中，所述“第一沟槽与第二沟槽在振膜的表面呈十字交叉并且相互贯通”，有助于将声源的振动通过两沟槽形成的十字形音隧(即声音的隧道)迅速向振膜的四周传递。
2.上述方案中，第一沟槽与第二沟槽的交叉点位于振膜的中心，借此设计可提升振 膜的音质、音色。
3.上述方案中，相邻两所述条状音梁构件之间设有连接梁，所述连接梁横跨于所述第一沟槽、所述第二沟槽的上方，构成所述音梁组件呈井字形；且各所述连接梁均位于所述振膜表面的中心区域。借此设计，可实现对振膜的中央区域进行加强。
4.上述方案中，所述振膜从发音频段区分为外围的高音区、中段的中音区以及中心的低音区；其中，所述振膜壁厚由外至内逐渐增厚，构成低音区的壁厚大于中音区的壁厚，中音区的壁厚大于高音区的壁厚；所述音梁组件位于所述低音区。
借此设计，通过将较厚的低音区设置于接近中心的位置，可使得频率较低、振幅较大的低频振动在振膜的低音区发出更为浑厚、圆润的低音；通过将较薄的高音区设置于远离中心的位置，可使得频率较高、振幅较小的高频振动在振膜的高音区发出更为通透、明亮的高音，进而令平面谐振扬声器在全频段产生的音色、音质均得到有效提升。
5.上述方案中，所述条状音梁构件的内端厚度均大于外端厚度。借此设计，可实现对振膜的中央区域进行加强。
6.上述方案中，所述第一沟槽和所述第二沟槽均为弧形槽，可以使得振膜在厚度上尽量减少厚薄突变，避免影响振膜的共鸣和振动。
7.上述方案中，所述第一沟槽及所述第二沟槽的长度均小于所述振膜的水平宽度，所述第一沟槽和所述第二沟槽的外端与振膜的表面之间均设置有圆滑过渡面。
本发明的工作原理及优点如下：
本发明一种带音梁及音隧的全频段高音质平面谐振扬声器，包括振膜，呈平面状，其外缘通过弹性连接件结合于扬声器的外框，其中部对应声源设置；振膜的至少一表面上设有第一、第二沟槽，两沟槽呈十字交叉并且相互贯通，将振膜表面等分成四块共振区；振膜于设有两沟槽的同侧表面中央还设有音梁组件，包括多根条状音梁构件，条状音梁构件成对设置于第一沟槽的两侧以及第二沟槽的两侧；两沟槽分别在振膜的表面上形成音隧。
相比现有技术而言，为了解决现有平面谐振扬声器无法兼顾高、中、低音区同时具备良好共鸣音色的问题，本发明对现有平面谐振扬声器，特别是平面谐振扬声器内的振膜设计进行了改进。具体体现在以下几个方面：第一，在振膜的表面上架设音梁组件；第二，在振膜的表面上设十字形沟槽，从而在振膜的表面上形成十字形音隧。
本发明针对现有平面谐振扬声器高音区亮不出来，而低音区浑厚圆润不够的问题，对平面谐振扬声器的设计及发声机理进行了深入探讨和研究，找出了现有平面谐振扬声器高音区和低音区的音色不佳的主要原因是由于振膜设计不合理所致。据此，发明人打破了以往平面谐振扬声器组成设计的束缚，大胆提出了本发明的改进设计方案，这种改进设计方案将振膜由以往的自由振动模式改变为现在的规范振动模式，从振动、共鸣、发声的角 度解决了平面谐振扬声器高音区亮不出来，而低音区浑厚圆润不够的问题，实践证明该改进设计方案具有突出的实质性特点和显著的技术进步，并且获得了明显的技术效果。
由于上述技术方案的运用，本发明与现有平面谐振扬声器相比具有以下优点和效果：
1.本发明在振膜的表面上设置音梁组件，由于低音相对高音振幅大、频率低，低音共鸣集中在振膜的中央区域，高音共鸣集中在振膜的四周边缘区域，加强振膜中央区域强度，对改善低音区音色和音质起到了重要作用。由于振膜的厚度为中央区域厚而四周薄的厚度渐变构造，加强了振膜中央区域强度，相对而言也改变了振膜中央区域与四周边缘区域厚薄差，对改善高音区音色和音质也可起到有益作用。
2.本发明在振膜表面上设十字形沟槽，该十字形沟槽在振膜的表面上实际形成十字形音隧，振动由振膜中心收集，并通过十字形音隧(即声音的隧道)迅速向振膜的四周边缘传递，这对改善高音区的音色和音质起到了关键作用。
3.本发明通过音梁组件及十字形沟槽的设计，在振膜上等分出四块共振区。当平面谐振扬声器工作时外部声源的振动先传递到振膜中心区域，然后通过音隧传递至各共振区，并产生共鸣和振动，以此将外部声源的振动放大为振膜的共鸣声。每个共振区可产生一个声波量，加上一个原声波量，共计五个声波量。声波量即声波的数量，声波量直接影响振膜的音色、穿透力和音量。因此本发明设计能够明显改善高音区和低音区的音色，增加高音区和低音区的穿透力和音量。
4.本发明的音梁组件以及沟槽可设于振膜的上表面，也可设于振膜的下表面，还可同时设置于振膜的上、下两表面。
附图说明
附图1为现有平面谐振扬声器的结构示意图；
附图2为现有平面谐振扬声器的剖面示意图；
附图3为本发明的结构示意图(无连接梁)；
附图4为图3中A-A向的剖面示意图；
附图5为本发明实施例音梁组件设于振膜上表面时的示意图(无连接梁)；
附图6为本发明实施例音梁组件同时设于振膜上下表面时的示意图(无连接梁)；
附图7为本发明的结构示意图(有连接梁)；
附图8为图7中A-A向的剖面示意图；
附图9为本发明实施例音梁组件设于振膜上表面时的示意图(有连接梁)；
附图10为本发明实施例音梁组件同时设于振膜上下表面时的示意图(有连接梁)。
以上附图中：1.振膜；2.弹性连接件；3.外框；4.振膜；5.第一沟槽；6.第二沟槽；7.共振区；8.音梁组件；8a.条状音梁构件；8b.连接梁。
具体实施方式
下面结合附图及实施例对本发明作进一步描述：
实施例：以下将以图式及详细叙述对本案进行清楚说明，任何本领域技术人员在了解本案的实施例后，当可由本案所教示的技术，加以改变及修饰，其并不脱离本案的精神与范围。
本文的用语只为描述特定实施例，而无意为本案的限制。单数形式如“一”、“这”、“此”、“本”以及“该”，如本文所用，同样也包含复数形式。
关于本文中所使用的“第一”、“第二”等，并非特别指称次序或顺位的意思，亦非用以限定本案，其仅为了区别以相同技术用语描述的组件或操作。
关于本文中所使用的“连接”或“定位”，均可指二或多个组件或装置相互直接作实体接触，或是相互间接作实体接触，亦可指二或多个组件或装置相互操作或动作。
关于本文中所使用的“包含”、“包括”、“具有”等，均为开放性的用语，即意指包含但不限于。
关于本文中所使用的用词(terms)，除有特别注明外，通常具有每个用词使用在此领域中、在本案内容中与特殊内容中的平常意义。某些用以描述本案的用词将于下或在此说明书的别处讨论，以提供本领域技术人员在有关本案描述上额外的引导。
关于本文中所使用的“上”、“下”为方向性用词，在本案中仅为说明各结构之间位置关系，并非用以限定本案保护方案及实际实施时的具体方向。
参见附图3、4所示，一种带音梁及音隧的全频段高音质平面谐振扬声器，包括振膜4，所述振膜4呈平面状，其外缘通过一弹性连接件2结合于扬声器的外框3，振膜4的中部对应一声源(如主扬声器)设置。
所述振膜4的下表面上设有第一沟槽5和第二沟槽6，两沟槽分别在振膜4的下表面上形成横向音隧和纵向音隧。
其中，第一沟槽5与第二沟槽6在振膜4的下表面上呈十字交叉并且相互贯通，交叉点位于振膜4的中心，有助于将声源的振动通过两沟槽5、6形成的十字形音隧(即声音的隧道)迅速向振膜4的四周传递。所述第一沟槽5与所述第二沟槽6的交叉点位于振膜4的中心，将振膜4表面等分成四块共振区7。
通过在振膜4下表面上开设有十字形沟槽，该十字形沟槽在振膜4的下表面实际形成十字形音隧，且接近中心的区域对外界声源的振动进行汇集，再通过十字形音隧迅速向振膜4的四周边缘传递，这对改善高音区的音色和音质起到了关键作用。同时通过在振膜4上等分出四块共振区7，振动可通过音隧传递至这四个共振区7，并产生谐振，可明显改善高音区和低音区的音色。
所述振膜4的下表面中央还设有音梁组件8，所述音梁组件8包括多根条状音梁构 件8a，所述条状音梁构件8a成对设置于第一沟槽5的两侧以及第二沟槽6的两侧。
通过在振膜4的下表面上设置音梁组件8，由于低音相对高音振幅大、频率低，低音共鸣集中在振膜4的中央区域，高音共鸣集中在振膜4的四周边缘区域，加强振膜4中央区域强度，对改善低音区音色和音质起到了重要作用。由于振膜4的厚度为中央区域厚而四周薄的厚度渐变构造(即外薄内厚的设计)，加强了振膜4中央区域强度，相对而言也改变了振膜4中央区域与四周边缘区域厚薄差，对改善高音区音色和音质也可起到有益作用。
优选的，如图7、8所示，相邻两所述条状音梁构件8a之间设有连接梁8b，所述连接梁8b横跨于所述第一沟槽2、所述第二沟槽3的上方，构成所述音梁组件8呈井字形；且各所述连接梁8b均位于所述振膜4表面的中心区域。通过四根连接梁8b构成一“口”字形加强结构，可对振膜4中心的低音区进一步加强，以达到对振膜4低音区音质的进一步提升。
优选的，所述振膜4从发音频段区分为外围的高音区、中段的中音区以及中心的低音区；其中，所述振膜4壁厚由外至内逐渐增厚，构成低音区的壁厚大于中音区的壁厚，中音区的壁厚大于高音区的壁厚；借此设计，通过将较厚的低音区设置于接近中心的位置，可使得频率较低、振幅较大的低频振动在振膜4的低音区发出更为浑厚、圆润的低音；通过将较薄的高音区设置于远离中心的位置，可使得频率较高、振幅较小的高频振动在振膜4的高音区发出更为通透、明亮的高音。所述音梁组件8位于所述低音区，可进一步提升振膜4的中部区域载荷。
优选的，所述条状音梁构件8a的内端厚度大于外端厚度。借此设计，可实现对振膜4的中央区域进行加强。
优选的，所述第一沟槽5和所述第二沟槽6均为弧形槽，可以使得振膜4在厚度上尽量减少厚薄突变，避免影响振膜4的共鸣和振动。
其中，所述第一沟槽5及所述第二沟槽6的长度均小于所述振膜4的水平宽度，且第一沟槽5和第二沟槽6的外端与振膜4的表面之间均设置有圆滑过渡面，以便振动更为均匀地传递至振膜4的周部。
下面针对本发明的其他实施情况以及结构变化作如下说明：
1.以上实施例中，图示的谐振扬声器仅作为举例说明之用，其结构并非用以限定本发明的保护范围，其它类似结构的谐振扬声器若采用了本发明的技术特征都应涵盖在本发明的保护范围之内。
2.以上实施例中，所述音梁组件8的数量并不局限于一组，也可以是多组并列或其他有助于加强振膜4中部载荷的设计，这是本领域技术人员容易理解和接受的。
3.以上实施例中，所述音梁组件8以及两所述沟槽5、6可位于振膜4的下表面(如图4、8所示)，也可位于振膜4的上表面(如图5、9所示)，还可同时设置于振膜4的上、下两表面(如图6、10所示)。
4.以上实施例中，所述条状音梁构件8a可以如图中所示是直条状，两两呈90度组合，并成对设置于第一沟槽2的两侧以及第二沟槽3的两侧。
或者，所述条状音梁构件8a也可以具有一弧度并包括两条直边，通过相邻两条状音梁构件8a的直边成对设置于第一沟槽2、第二沟槽3的两侧。
5.以上实施例中，所述第一沟槽5和所述第二沟槽6均为弧形槽。但本发明不局限于此，可以将沟槽设计成其它形状，比如V形、U形、W形等凹形结构。这是本领域技术人员容易理解和接受的。
6.以上实施例中，所述振膜4的材质可以如金属材质、碳纤维材质、纸质等。
相比现有技术而言，为了解决现有平面谐振扬声器无法兼顾高、中、低音区同时具备良好共鸣音色的问题，本发明对现有平面谐振扬声器，特别是平面谐振扬声器内的振膜设计进行了改进。具体体现在以下几个方面：第一，在振膜的表面上架设音梁组件；第二，在振膜的表面上设十字形沟槽，从而在振膜的表面上形成十字形音隧。
本发明针对现有平面谐振扬声器高音区亮不出来，而低音区浑厚圆润不够的问题，对平面谐振扬声器的设计及发声机理进行了深入探讨和研究，找出了现有平面谐振扬声器高音区和低音区的音色不佳的主要原因是由于振膜设计不合理所致。据此，发明人打破了以往平面谐振扬声器组成设计的束缚，大胆提出了本发明的改进设计方案，这种改进设计方案将振膜由以往的自由振动模式改变为现在的规范振动模式，从振动、共鸣、发声的角度解决了平面谐振扬声器高音区亮不出来，而低音区浑厚圆润不够的问题，提高了各频段声音的保真度，实践证明该改进设计方案具有突出的实质性特点和显著的技术进步，并且获得了明显的技术效果。
上述实施例只为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (6)

  1. 一种带音梁及音隧的全频段高音质平面谐振扬声器，其特征在于：
    包括振膜(4)，所述振膜(4)呈平面状，其外缘通过一弹性连接件(2)结合于扬声器的外框(3)，振膜(4)的中部对应一声源设置；
    所述振膜(4)的至少一侧表面上设有第一沟槽(5)和第二沟槽(6)，第一沟槽(5)与第二沟槽(6)在振膜(4)的表面上呈十字交叉且相互贯通，交叉点位于振膜(4)的中心，进而将振膜(4)的表面等分成四块共振区(7)；
    所述振膜(4)于设有第一沟槽(5)和第二沟槽(6)的同侧表面中央还设有音梁组件(8)，所述音梁组件(8)包括多根条状音梁构件(8a)，所述条状音梁构件(8a)成对设置于第一沟槽(5)的两侧以及第二沟槽(6)的两侧；
    所述第一沟槽(5)与所述第二沟槽(6)分别在振膜(4)的表面上形成音隧。
  2. 根据权利要求1所述的全频段高音质平面谐振扬声器，其特征在于：相邻两所述条状音梁构件(8a)之间设有连接梁(8b)，所述连接梁(8b)横跨于所述第一沟槽(2)、所述第二沟槽(3)的上方，构成所述音梁组件(8)呈井字形；且各所述连接梁(8b)均位于所述振膜(4)表面的中心区域。
  3. 根据权利要求1所述的全频段高音质平面谐振扬声器，其特征在于：所述振膜(4)从发音频段区分为外围的高音区、中段的中音区以及中心的低音区；
    其中，所述振膜(4)壁厚由外至内逐渐增厚，构成低音区的壁厚大于中音区的壁厚，中音区的壁厚大于高音区的壁厚；
    所述音梁组件(8)位于所述低音区。
  4. 根据权利要求1所述的全频段高音质平面谐振扬声器，其特征在于：所述条状音梁构件(8a)的内端厚度大于外端厚度。
  5. 根据权利要求1所述的全频段高音质平面谐振扬声器，其特征在于：所述第一沟槽(5)和所述第二沟槽(6)均为弧形槽。
  6. 根据权利要求1所述的全频段高音质平面谐振扬声器，其特征在于：所述第一沟槽(5)及所述第二沟槽(6)的长度均小于所述振膜(4)的水平宽度；所述第一沟槽(5)和所述第二沟槽(6)的外端与振膜(4)的表面之间均设置有圆滑过渡面。
PCT/CN2020/136577 2020-08-19 2020-12-15 一种带音梁及音隧的全频段高音质平面谐振扬声器 WO2022036955A1 (zh)

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