WO2022036958A1 - 一种带音梁及音隧的全频段高音质碗形扬声器 - Google Patents

一种带音梁及音隧的全频段高音质碗形扬声器 Download PDF

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WO2022036958A1
WO2022036958A1 PCT/CN2020/136581 CN2020136581W WO2022036958A1 WO 2022036958 A1 WO2022036958 A1 WO 2022036958A1 CN 2020136581 W CN2020136581 W CN 2020136581W WO 2022036958 A1 WO2022036958 A1 WO 2022036958A1
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Prior art keywords
bowl
shaped
bridge
shaped diaphragm
sound
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PCT/CN2020/136581
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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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Publication of WO2022036958A1 publication Critical patent/WO2022036958A1/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
    • 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • 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
    • 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

Definitions

  • the invention relates to a bowl-shaped loudspeaker (concave spherical surface), in particular to a full-frequency high-quality bowl-shaped loudspeaker with a sound beam and a sound tunnel.
  • a loudspeaker is a device that converts an electrical signal into an acoustic signal.
  • the bowl-shaped loudspeaker is often used in high-power equipment such as vehicle audio, and is characterized by a prominent bass effect.
  • a traditional bowl-shaped speaker is usually composed of a bowl-shaped diaphragm 1, a voice coil 2, a magnet and a magnetic conductive structure (not shown in the figure).
  • the material of the bowl-shaped diaphragm 1 is relatively hard. Metal materials are often used.
  • the current output by the amplifier of different sizes is converted into sound waves through frequency waves, and the output energy is increased by the promotion of power, and the voice coil 2 is moved under the action of the magnetic field, and the voice coil 2 is connected at the same time.
  • the bowl-shaped vibrating membrane 1 is placed on and drives the bowl-shaped vibrating membrane 1 to vibrate, and then the vibration of the bowl-shaped vibrating membrane 1 pushes the air to produce sound.
  • the common problem of traditional bowl-shaped speakers is that the bowl-shaped speakers have an inherent resonance frequency when they sound, and beyond a certain range of the resonance frequency region, the high-pitched region cannot be bright, and the low-pitched region is not rich and round enough, especially in the middle and high-pitched regions.
  • the sound quality is poor. Bass must be achieved through a dedicated bass bowl speaker, and treble must be achieved through a dedicated tweeter bowl speaker, that is, the timbre is proportional to the number of speakers, and it is impossible to achieve high-quality timbre across the entire frequency range through a single bowl speaker.
  • the current bowl-shaped speaker 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 bowl-shaped 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-range high-quality bowl-shaped loudspeaker with sound beam and sound tunnel.
  • the technical scheme adopted in the present invention is:
  • a full-band high-quality bowl-shaped speaker with sound beam and sound tunnel comprising a voice coil and a bowl-shaped diaphragm; the upper end of the bowl-shaped diaphragm is in the shape of an outwardly expanded opening, and the bottom of the lower end is in contact with the upper end of the voice coil. connection positioning;
  • At least one side surface of the bowl-shaped diaphragm is provided with a bridge-type sound beam, and the bridge-type sound beam is annular and has a distance from the top of the voice coil in the horizontal direction of the bowl-shaped speaker;
  • the bowl-shaped diaphragm is also provided with at least two grooves on the same surface with the bridge sound beam, and each of the grooves is radially arranged based on the center of the horizontal direction of the speaker, and then the grooves located in the The surface of the bowl-shaped diaphragm on the outside of the bridge-shaped sound beam is equally divided into multiple resonance areas; each groove traverses the bridge-shaped sound beam in the horizontal direction of the bowl-shaped speaker, and is perpendicular to the bridge-shaped sound beam in the length direction of the groove. ;
  • the groove is recessed on the surface of the bowl-shaped diaphragm to form a sound tunnel.
  • the bridge-type sound beam is erected on at least one side surface of the bowl-shaped diaphragm, and has a distance from the top of the voice coil in the horizontal direction, whereby the sound vibration of the voice coil can be designed. Convergence at said "distance" on the bowl diaphragm.
  • each of the grooves is radially and uniformly arranged based on the center of the horizontal direction of the bowl-shaped speaker, which is helpful for quickly passing the vibration of the voice coil through the radial sound tunnel (that is, the sound tunnel) formed by the groove. transmitted around the diaphragm.
  • the bowl-shaped diaphragm is divided into the treble area of the outer section, the mid-range area of the middle section and the low-frequency area of the inner section from the pronunciation frequency range; wherein, the wall thickness of the bowl-shaped diaphragm is gradually from the mouth to the inside. Thickening, the wall thickness of the bass region is larger than the wall thickness of the middle sound region, and the wall thickness of the middle sound region is larger than the wall thickness of the high sound region; the bridge sound beam is located in the bass region.
  • the thicker bass region close to the voice coil, the low-frequency vibration with lower frequency and larger amplitude can emit a thicker and more rounded bass in the bass region of the bowl-shaped diaphragm;
  • the thinner treble area is set away from the voice coil, so that the high-frequency vibration with higher frequency and smaller amplitude can emit more transparent and bright treble in the treble area of the bowl-shaped diaphragm, thereby making the bowl-shaped speaker in the high-frequency range.
  • the timbre and sound quality produced by all frequency bands have been effectively improved.
  • a bridge hole is provided at the bottom of the bridge sound beam, the bridge hole is arranged in the width direction of the bridge sound beam, and the opening below the bridge hole corresponds to the groove.
  • arranging the sound beam on the sound tunnel is more conducive to transmitting vibrations through the sound tunnel, which is more conducive to improving the vibration response rate of the bowl-shaped diaphragm.
  • each of the grooves is an arc-shaped groove, which can minimize the sudden change in thickness of the bowl-shaped diaphragm and avoid affecting the resonance and vibration of the diaphragm.
  • the length of the groove is smaller than the width of the bowl-shaped diaphragm, and smooth transition surfaces are provided between the two outer ends of the groove and the surface of the bowl-shaped diaphragm.
  • the present invention is a full-frequency high-quality bowl-shaped speaker with sound beam and sound tunnel, which includes a voice coil and a bowl-shaped diaphragm; the upper end of the bowl-shaped diaphragm is in the shape of an outwardly expanding opening, and the bottom of the lower end is connected and positioned with the upper end of the voice coil; At least one side surface of the bowl-shaped diaphragm is provided with a bridge-type sound beam, which is annular and has a distance from the top of the voice coil in the horizontal direction; the bowl-shaped diaphragm is arranged on the same surface with the bridge-type sound beam.
  • each groove is radially arranged, dividing the surface of the bowl-shaped diaphragm located on the outside of the bridge-shaped sound beam into a plurality of resonance areas; the grooves traverse the bridge-shaped speaker in the horizontal direction of the bowl-shaped speaker The sound beam is perpendicular to the bridge sound beam with the length direction of the groove; the groove is recessed on the surface of the bowl-shaped diaphragm to form a sound tunnel.
  • the present invention has Membrane design has been improved. It is embodied in the following aspects: first, a bridge-type sound beam is set up on the surface of the bowl-shaped diaphragm; Radial sound tunnels are formed on the surface.
  • the invention deeply discusses and studies the design and sound generation mechanism of the bowl-shaped loudspeaker, and finds out the high-pitched area and the sounding mechanism of the existing bowl-shaped loudspeaker.
  • the main reason for the poor sound in the bass region is due to the unreasonable design of the bowl-shaped diaphragm. Accordingly, the inventor broke the shackles of the previous bowl-shaped speaker design, and boldly proposed an improved design scheme of the present invention.
  • This improved design scheme changes the bowl-shaped diaphragm from the previous free vibration mode to the current standard vibration mode. From the perspective of vibration, resonance and sound production, the problem that the high-pitched region of the bowl-shaped speaker cannot be bright, and the low-pitched region is not rich and round enough is solved. technical effect.
  • the present invention has the following advantages and effects compared with the diaphragm of the existing bowl-shaped loudspeaker:
  • the present invention sets a bridge-type sound beam structure on the surface of the bowl-shaped diaphragm. Because the bass is relatively high in amplitude and low in frequency, the bass resonance is concentrated in the central area of the bowl-shaped diaphragm close to the voice coil, and the high-pitched resonance is concentrated in the bowl-shaped diaphragm. The surrounding edge area of the diaphragm strengthens the strength of the central area of the bowl-shaped diaphragm, which plays an important role in improving the tone and sound quality of the bass region.
  • the thickness of the bowl-shaped diaphragm is thick in the central area and thin in the surrounding area (that is, the thickness is thin on the outside and thick on the inside), the strength of the central area of the bowl-shaped diaphragm is strengthened, and the central area of the bowl-shaped diaphragm and the surrounding area are relatively changed.
  • the difference in thickness of the edge area can also play a beneficial role in improving the tone and sound quality of the treble area.
  • the present invention is provided with radial grooves on the surface of the bowl-shaped diaphragm, the radial grooves actually form a radial sound tunnel on the bowl-shaped diaphragm, and the area close to the voice coil collects the vibration of the voice coil, and then passes the radial grooves.
  • the sound tunnel (that is, the tunnel of sound) is rapidly transmitted to the surrounding edges of the bowl-shaped diaphragm, which plays a key role in improving the timbre and sound quality of the treble region.
  • the sound beam is designed into a bridge-type sound beam structure, especially a bridge hole (a hole) is designed on one side of the sound beam, so that the sound beam is like a bridge arch structure.
  • a bridge hole a hole
  • the sound beam is more conducive to transmit vibration through the sound tunnel, so as to be more conducive to the resonance and rapid vibration response of the bowl-shaped diaphragm.
  • the present invention divides N blocks of resonance regions equal to the number of grooves on the diaphragm through the design of bridge sound beams and radial grooves.
  • the vibration of the voice coil is first transmitted to the central area of the bowl-shaped 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 area can generate one sound wave quantity, plus one original sound wave quantity, for a total of N+1 sound wave quantities.
  • 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 bridge-type sound beam and groove of the present invention can be arranged on the upper surface of the bowl-shaped diaphragm, also can be arranged on the lower surface of the bowl-shaped diaphragm, and can also be arranged on the upper and lower surfaces of the bowl-shaped diaphragm at the same time.
  • FIG. 5 is a schematic diagram of an embodiment of the present invention when the bridge sound beam is arranged on the lower surface of the bowl-shaped diaphragm;
  • FIG. 6 is a schematic diagram of an embodiment of the present invention when the bridge-type sound beam is simultaneously disposed on the upper and lower surfaces of the bowl-shaped diaphragm.
  • 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-range high-quality bowl-shaped loudspeaker with sound beams and sound tunnels includes a voice coil 2 and a bowl-shaped diaphragm 3; the upper end of the bowl-shaped diaphragm 3 is an outwardly expanded opening The bottom of the lower end is connected and positioned with the upper end of the voice coil 2 .
  • the bowl-shaped diaphragm 3 is provided with a bridge-type sound beam 4, the bridge-type sound beam 4 is ring-shaped, erected on the bottom of the upper surface of the bowl-shaped diaphragm 3, and is in the horizontal direction of the bowl-shaped loudspeaker with the said sound beam.
  • the top of the voice coil 2 has a distance.
  • the bass resonance is concentrated in the central area of the bowl-shaped diaphragm 3 close to the voice coil 2, and the treble resonance is concentrated in the bowl
  • the peripheral edge area of the bowl-shaped diaphragm 3 strengthens the strength of the central area of the bowl-shaped diaphragm 3, which plays an important role in improving the tone and sound quality of the bass region.
  • the thickness of the bowl-shaped diaphragm 3 is thick in the central area and thin around the thickness gradient structure (that is, the design is thin on the outside and thick on the inside), the strength of the central area of the bowl-shaped diaphragm 3 is strengthened, and the bowl-shaped diaphragm is relatively changed. 3
  • the thickness difference between the central area and the surrounding edge area can also play a beneficial role in improving the tone and sound quality of the high-pitched area.
  • the bowl-shaped diaphragm 3 is divided into a high-pitched area in the outer section, a mid-range in the middle section, and a low-frequency area in the inner section from the sound frequency band; wherein, the wall thickness of the bowl-shaped diaphragm 3 gradually increases from the mouth to the inside Thickening, the wall thickness of the bass region is larger than the wall thickness of the midrange region, and the wall thickness of the midrange region is greater than the wall thickness of the treble region; the bridge sound beam 4 is located in the bass region, which can further improve the bowl-shaped diaphragm
  • the middle load of 3 improves the bass sound quality and timbre.
  • the upper surface of the bowl-shaped diaphragm 3 is provided with at least two grooves 5, and each of the grooves 5 is radially arranged based on the horizontal center of the bowl-shaped speaker, so that The surface of the bowl-shaped diaphragm 3 on the outside of the beam 4 is equally divided into a plurality of resonance regions 7; The sound beam 4 is vertical.
  • the groove 5 is recessed on the upper surface of the bowl-shaped diaphragm 3 to form a sound tunnel.
  • the radial grooves 5 By opening the radial grooves 5 on the upper surface of the bowl-shaped diaphragm 3, the radial grooves 5 actually form the radial sound tunnel 10 on the inner side of the bowl-shaped diaphragm 3, and the area close to the voice coil 2 has no effect on the voice coil 2.
  • the vibrations are collected and then rapidly transmitted to the surrounding edges of the bowl-shaped diaphragm 3 through the radial sound tunnel 10 (ie, the sound tunnel), which plays a key role in improving the timbre and sound quality of the high-pitched region.
  • 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 bass region and the treble region.
  • the bottom of the bridge sound beam 4 is provided with a bridge hole 6 , the bridge hole 6 is arranged in the width direction of the bridge sound beam 4 , and the lower opening of the bridge hole 6 corresponds to the groove 5 .
  • the sound beam is designed as a bridge-type sound beam 4 structure, especially a bridge hole 6 (a hole) is designed on one side of the sound beam, so that the bridge-type sound beam 4 is like a bridge arch structure.
  • the vertical center line of the bridge sound beam 4 overlaps with the vertical center line of the bowl-shaped diaphragm 3 .
  • Each of the grooves 5 is an arc-shaped groove, which can minimize the sudden change in thickness of the bowl-shaped diaphragm 3 to avoid affecting the resonance and vibration of the bowl-shaped diaphragm 3 .
  • the length of the groove 5 is smaller than the width of the bowl-shaped diaphragm 3 , and smooth transition surfaces are provided between the two outer ends of the groove 5 and the upper surface of the bowl-shaped diaphragm 3 .
  • the bowl-shaped 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. within the protection scope of the present invention.
  • the bridge sound beam 4 is provided with a bridge hole 6, but the present invention is not limited to this, can not set the bridge hole 6, or set other structures similar to the bridge hole 6 that are convenient for vibration to be transmitted through the sound tunnel, this It is easily understood and accepted by those skilled in the art.
  • the number of the bridge-type sound beam 4 is not limited to one, but can also be a plurality of parallel or other designs that help to strengthen the load in the middle of the bowl-shaped diaphragm 3. This is a person skilled in the art. easy to understand and accept.
  • the bridge sound beam 4 and the groove 5 may be located on the upper surface of the bowl-shaped diaphragm 3 (as shown in FIG. 4 ), or may be located on the lower surface of the bowl-shaped diaphragm 3 ( As shown in FIG. 5 ), it can also be disposed on the upper and lower surfaces of the bowl-shaped diaphragm 3 at the same time (as shown in FIG. 6 ).
  • the groove 5 is an arc groove.
  • 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 bowl-shaped diaphragm 3 is not limited to metal material, and can also be other high-strength materials, such as carbon fiber.
  • the present invention has Membrane design has been improved. It is embodied in the following aspects: first, a bridge-type sound beam is set up on the surface of the bowl-shaped diaphragm; Radial sound tunnels are formed on the surface of the membrane.
  • the invention deeply discusses and studies the design and sound generation mechanism of the bowl-shaped loudspeaker, and finds out the high-pitched area and the sounding mechanism of the existing bowl-shaped loudspeaker.
  • the main reason for the poor sound in the bass region is due to the unreasonable design of the bowl-shaped diaphragm. Accordingly, the inventor broke the shackles of the previous bowl-shaped speaker design, and boldly proposed an improved design scheme of the present invention. This improved design scheme changes the bowl-shaped diaphragm from the previous free vibration mode to the current standard vibration mode.

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Abstract

一种带音梁及音隧的全频段高音质碗形扬声器，包括音圈及碗形振膜；碗形振膜的上端呈外扩的敞口状，下端的底部与音圈上端连接定位；碗形振膜的至少一侧表面上设有桥式音梁，呈环状，并在水平方向上与音圈的顶部具有一距离；碗形振膜于设有桥式音梁的同一表面设有至少两条沟槽，且各沟槽呈放射状排布，将位于桥式音梁外侧的碗形振膜表面等分成多块共振区；沟槽在碗形扬声器的水平方向上横穿桥式音梁，并以沟槽的长度方向与桥式音梁垂直；沟槽凹设于碗形振膜的表面形成音隧。本发明将碗形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、发声的角度解决了扬声器高音区亮不出来，而低音区浑厚圆润不够的问题。

Description

一种带音梁及音隧的全频段高音质碗形扬声器 技术领域
本发明涉及碗形扬声器(凹球面)，具体涉及一种带音梁及音隧的全频段高音质碗形扬声器。
背景技术
扬声器是将电信号转换为声信号的一种装置，其中，碗形扬声器常用于诸如车辆音响等大功率器材中，其特点是低音效果突出。如图1、2所述，传统的碗形扬声器通常由碗形振膜1、音圈2、磁体以及导磁结构(图中未绘出)组成，其碗形振膜1的材质较硬，常采用金属材质。碗形扬声器在工作时，由放大器输出大小不等的电流通过频率波转化成声波，通过功率的推动而提高其输出的能量，在磁场的作用下使音圈2移动，同时音圈2连接在碗形振膜1上并带动碗形振膜1震动，再由碗形振膜1的震动推动空气，从而发出声音。
传统的碗形扬声器普遍存在的问题是：碗形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，尤其是中、高音区的音质欠佳。低音必须通过专门的低音碗形扬声器实现，高音则必须通过专门的高音碗形扬声器实现，即音色和扬声器的数量成正比，无法通过单个碗形扬声器实现全频段的优质音色。究其原因主要是目前的碗形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，传统的碗形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碗形扬声器。
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碗形扬声器，包括音圈及碗形振膜；所述碗形振膜的上端呈外扩的敞口状，下端的底部与所述音圈的上端连接定位；
所述碗形振膜的至少一侧表面上架设有一桥式音梁，该桥式音梁呈环状，并在碗形扬声器的水平方向与所述音圈的顶部具有一距离；
所述碗形振膜于设有桥式音梁的同一表面上还设有至少两条沟槽，且各所述沟槽以扬声器水平方向的中心为基准呈放射状排布，进而将位于所述桥式音梁外侧的碗形振膜表面等分成多块共振区；各沟槽在碗形扬声器的水平方向上均横穿桥式音梁，并以沟槽的长度方向与桥式音梁垂直；
其中，所述沟槽凹设于所述碗形振膜的表面形成音隧。
上述技术方案中的有关内容解释如下：
1.上述方案中，所述桥式音梁架设于碗形振膜的至少一侧表面，并在水平方向上与所述音圈的顶部具有一距离，借此设计，音圈的发声振动可在碗形振膜上的所述“距离”处汇集。
2.上述方案中，各所述沟槽以碗形扬声器水平方向的中心为基准呈放射状均匀排布，有助于将音圈的振动通过沟槽形成的放射状音隧(即声音的隧道)迅速向振膜的四周传递。
3.上述方案中，所述碗形振膜从发音频段区分为外段的高音区、中段的中音区以及内段的低音区；其中，所述碗形振膜壁厚由口至内逐渐增厚，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；所述桥式音梁位于所述低音区。
借此设计，通过将较厚的低音区设置于接近音圈的位置，可使得频率较低、振幅较大的低频振动在碗形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音圈的位置，可使得频率较高、振幅较小的高频振动在碗形振膜的高音区发出更为通透、明亮的高音，进而令碗形扬声器在全频段产生的音色、音质均得到有效提升。
4.上述方案中，所述桥式音梁的底部设有桥洞，该桥洞在桥式音梁的宽度方向贯穿设置，且桥洞的下方敞口对应所述沟槽。
借此设计，通过将音梁架设在音隧上更有利于通过音隧传递振动，从而更有利于提升碗形振膜的振动响应速率。
5.上述方案中，当所述振膜水平时，所述桥式音梁的上下方向的中心线与碗形振膜的上下方向的中心线重叠，以提升音质、音色。
6.上述方案中，各所述沟槽均为弧形槽，可以使得碗形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，所述沟槽的长度小于所述碗形振膜的宽度，沟槽的两外端与碗形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碗形扬声器，包括音圈及碗形振膜；碗形振膜的上端呈外扩的敞口状，下端的底部与音圈上端连接定位；碗形振膜的至少一侧表面上设有桥式音梁，呈环状，并在水平方向上与音圈的顶部具有一距离；碗形振膜于设有桥式音梁的同一表面设有至少两条沟槽，且各沟槽呈放射状排布，将位于桥式音梁外侧的碗形振膜表面等分成多块共振区；沟槽在碗形扬声器的水平方向上横穿桥式音梁，并以沟槽的长度方向与桥式音梁垂直；沟槽凹设于碗形振膜的表面形成音隧。
相比现有技术而言，为了解决现有碗形扬声器无法兼顾高、中、低音区同时具备良好共鸣音色的问题，本发明对现有碗形扬声器，特别是碗形扬声器内的碗形振膜设计进行了改进。具体体现在以下几个方面：第一，在碗形振膜的表面上架设桥式音梁；第二，在 碗形振膜的表面上开设放射状沟槽，该放射状沟槽在碗形振膜的表面上形成放射状音隧。
本发明针对现有碗形扬声器高音区亮不出来，而低音区浑厚圆润不够的问题，对碗形扬声器的设计及发声机理进行了深入探讨和研究，找出了现有碗形扬声器高音区和低音区的音色不佳的主要原因是由于碗形振膜设计不合理所致。据此，发明人打破了以往碗形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碗形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、发声的角度解决了碗形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，本发明与现有碗形扬声器的振膜相比具有以下优点和效果：
1.本发明在碗形振膜的表面上设置桥式音梁结构，由于低音相对高音振幅大、频率低，低音共鸣集中在碗形振膜靠近音圈的中央区域，高音共鸣集中在碗形振膜的四周边缘区域，加强碗形振膜中央区域强度，对改善低音区音色和音质起到了重要作用。由于碗形振膜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)，加强了碗形振膜中央区域强度，相对而言也改变了碗形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.本发明在碗形振膜表面上开设有放射状沟槽，该放射状沟槽在碗形振膜上实际形成放射状音隧，且接近音圈的区域对音圈的振动进行汇集，再通过放射状音隧(即声音的隧道)迅速向碗形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.本发明将音梁设计成桥式音梁结构，特别是在音梁的一侧设计有桥洞(洞缺)，使音梁象桥拱结构一样。当这样的音梁架设在音隧上更有利于通过音隧传递振动，以更有利于碗形振膜的共鸣和快速振动响应。
4.本发明通过桥式音梁及放射状沟槽的设计，在振膜上等分出与沟槽数量相同的N块共振区。当扬声器工作时音圈的振动先传递到碗形振膜的中心区域，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N+1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。
5.本发明桥式音梁以及沟槽可设于碗形振膜的上表面，也可设于碗形振膜的下表面，还可同时设置于碗形振膜的上、下两表面。
附图说明
附图1为现有的碗形扬声器的俯视图；
附图2为现有的碗形扬声器的剖视图；
附图3为本发明的俯视图；
附图4为图3中A-A向剖视图；
附图5为本发明实施例桥式音梁设于碗形振膜下表面时的示意图；
附图6为本发明实施例桥式音梁同时设于碗形振膜上下表面时的示意图。
以上附图中：1.碗形振膜；2.音圈；3.碗形振膜；4.桥式音梁；5.沟槽；6.桥洞；7.共振区。
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“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碗形扬声器，包括音圈2及碗形振膜3；所述碗形振膜3的上端呈外扩的敞口状，下端的底部与所述音圈2的上端连接定位。
所述碗形振膜3上设有一桥式音梁4，该桥式音梁4呈环状，架设于碗形振膜3的上表面底部，并在碗形扬声器的水平方向上与所述音圈2的顶部具有一距离。
通过在碗形振膜3的上表面上设置桥式音梁4，由于低音相对高音振幅大、频率低，低音共鸣集中在碗形振膜3靠近音圈2的中央区域，高音共鸣集中在碗形振膜3的四周边缘区域，加强碗形振膜3中央区域强度，对改善低音区音色和音质起到了重要作用。由于碗形振膜3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)，加强了碗形振膜3中央区域强度，相对而言也改变了碗形振膜3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，所述碗形振膜3从发音频段区分为外段的高音区、中段的中音区以及内段的低音区；其中，所述碗形振膜3的壁厚由口至内逐渐增厚，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；所述桥式音梁4位于所述低音区，可进一步提升碗形振膜3的中部载荷，提升低音音质及音色。
所述碗形振膜3的上表面上设有至少两条沟槽5，且各所述沟槽5以碗形扬声器水平方向的中心为基准呈放射状排布，进而将位于所述桥式音梁4外侧的碗形振膜3表面等分成多块共振区7；各沟槽5在碗形扬声器的水平方向上均横穿桥式音梁4，并以沟槽5的长度方向与桥式音梁4垂直。
其中，所述沟槽5凹设于所述碗形振膜3的上表面形成音隧。
通过在碗形振膜3上表面上开设有放射状沟槽5，该放射状沟槽5在碗形振膜3的内侧上实际形成放射状音隧10，且接近音圈2的区域对音圈2的振动进行汇集，再通过放射状音隧10(即声音的隧道)迅速向碗形振膜3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。同时通过在碗形振膜3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，可明显改善低音区和高音区的音色。
所述桥式音梁4的底部设有桥洞6，该桥洞6在桥式音梁4的宽度方向贯穿设置，且桥洞6的下方敞口对应所述沟槽5。将音梁设计成桥式音梁4结构，特别是在音梁的一侧设计有桥洞6(洞缺)，使桥式音梁4象桥拱结构一样。当这样的桥式音梁4架设在音隧上更有利于通过音隧传递振动，以更有利于碗形振膜3的共鸣和快速振动响应。
优选的，当所述碗形振膜3水平放置时，所述桥式音梁4的上下方向的中心线与碗形振膜3的上下方向的中心线重叠。
各所述沟槽5均为弧形槽，可以使得碗形振膜3在厚度上尽量减少厚薄突变，避免影响碗形振膜3的共鸣和振动。其中，所述沟槽5的长度小于所述碗形振膜3的宽度，沟槽5的两外端与碗形振膜3的上表面之间均设置有圆滑过渡面。
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，图示的碗形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，其它类似结构的碗形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，在桥式音梁4上设有桥洞6，但本发明不局限于此，可以不设桥洞6，或设置类似桥洞6的其它便于振动通过音隧传递的结构，这是本领域技术人员容易理解和接受的。
3.以上实施例中，所述桥式音梁4的数量并不局限于一个，也可以是多个并列或其他 有助于加强碗形振膜3中部载荷的设计，这是本领域技术人员容易理解和接受的。
4.以上实施例中，所述桥式音梁4以及所述沟槽5可位于碗形振膜3的上表面(如图4所示)，也可位于碗形振膜3的下表面(如图5所示)，还可同时设置于碗形振膜3的上、下两表面(如图6所示)。
5.以上实施例中，所述沟槽5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，所述碗形振膜3的材质并不局限于金属材质，也可以是其它高强度材质，如碳纤维等。
相比现有技术而言，为了解决现有碗形扬声器无法兼顾高、中、低音区同时具备良好共鸣音色的问题，本发明对现有碗形扬声器，特别是碗形扬声器内的碗形振膜设计进行了改进。具体体现在以下几个方面：第一，在碗形振膜的表面上架设桥式音梁；第二，在碗形振膜的表面上开设有放射状沟槽，该放射状沟槽在碗形振膜的表面上形成放射状音隧。
本发明针对现有碗形扬声器高音区亮不出来，而低音区浑厚圆润不够的问题，对碗形扬声器的设计及发声机理进行了深入探讨和研究，找出了现有碗形扬声器高音区和低音区的音色不佳的主要原因是由于碗形振膜设计不合理所致。据此，发明人打破了以往碗形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碗形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、发声的角度解决了碗形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碗形扬声器，其特征在于：
    包括音圈(2)及碗形振膜(3)；所述碗形振膜(3)的上端呈外扩的敞口状，下端的底部与所述音圈(2)的上端连接定位；
    所述碗形振膜(3)的至少一侧表面上架设有一桥式音梁(4)，该桥式音梁(4)呈环状，并在碗形扬声器的水平方向与所述音圈(1)的顶部具有一距离；
    所述碗形振膜(3)于设有桥式音梁(4)的同一表面上还设有至少两条沟槽(5)，且各所述沟槽(5)以扬声器水平方向的中心为基准呈放射状排布，进而将位于所述桥式音梁(4)外侧的碗形振膜(3)表面等分成多块共振区(7)；各沟槽(5)在碗形扬声器的水平方向上均横穿桥式音梁(4)，并以沟槽(5)的长度方向与桥式音梁(4)垂直；
    其中，所述沟槽(5)凹设于所述碗形振膜(3)的表面形成音隧。
  2. 根据权利要求1所述的全频段高音质碗形扬声器，其特征在于：所述碗形振膜(3)从发音频段区分为外段的高音区、中段的中音区以及内段的低音区；
    其中，所述碗形振膜(3)的壁厚由口至内逐渐增厚，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；
    所述桥式音梁(4)位于所述低音区。
  3. 根据权利要求1所述的全频段高音质碗形扬声器，其特征在于：所述桥式音梁(4)的底部设有桥洞(6)，该桥洞(6)在桥式音梁(4)的宽度方向贯穿设置，且桥洞(6)的下方敞口对应所述沟槽(5)。
  4. 根据权利要求1所述的全频段高音质碗形扬声器，其特征在于：当所述碗形振膜(3)水平时，所述桥式音梁(4)的上下方向的中心线与碗形振膜(3)的上下方向的中心线重叠。
  5. 根据权利要求1所述的全频段高音质碗形扬声器，其特征在于：各所述沟槽(5)均为弧形槽。
  6. 根据权利要求1所述的全频段高音质碗形扬声器，其特征在于：所述沟槽(5)的长度小于所述碗形振膜(3)的宽度，沟槽(5)的两外端与碗形振膜(3)的表面之间均设置有圆滑过渡面。
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