WO2021134189A1 - 振膜及发声器件 - Google Patents

振膜及发声器件 Download PDF

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Publication number
WO2021134189A1
WO2021134189A1 PCT/CN2019/129872 CN2019129872W WO2021134189A1 WO 2021134189 A1 WO2021134189 A1 WO 2021134189A1 CN 2019129872 W CN2019129872 W CN 2019129872W WO 2021134189 A1 WO2021134189 A1 WO 2021134189A1
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WO
WIPO (PCT)
Prior art keywords
folding ring
diaphragm
ring
pattern
mold portion
Prior art date
Application number
PCT/CN2019/129872
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
Priority to PCT/CN2019/129872 priority Critical patent/WO2021134189A1/zh
Publication of WO2021134189A1 publication Critical patent/WO2021134189A1/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
    • 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
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Definitions

  • the utility model relates to the field of electro-acoustic conversion, in particular to a diaphragm and a sound device using the diaphragm.
  • a related art sounding device includes a basin frame, a diaphragm supported on the basin frame, and a voice coil that drives the diaphragm to vibrate.
  • the diaphragm includes a central part and a folding ring part extending from the central part and surrounding the central part.
  • the cross section of the folded ring portion is in an arc structure, and the upper and lower surfaces of the folded ring portion are both smooth surface structures.
  • This structure prevents the acoustic performance of the diaphragm from being further improved. When the diaphragm vibrates, it may swing, which may cause noise or even distortion, and cause the acoustic performance of the sound emitting device to be limited.
  • the purpose of the utility model is to overcome the above technical problems and provide a diaphragm and sound device with good stability and better acoustic performance.
  • the utility model provides a diaphragm, which includes a central part and a folding ring part extending from the central part and surrounding the central part.
  • the folding ring part includes an upper surface of the folding ring and an upper surface of the folding ring.
  • the diaphragm further includes an upper pattern mold portion formed by the protrusion or depression of the upper surface of the folding ring and a lower pattern mold portion formed by the protrusion or depression of the lower surface of the folding ring, so
  • the upper pattern mold portion includes a plurality of upper characteristic patterns arranged at intervals along the circumferential direction of the folded ring portion
  • the lower pattern mold portion includes a plurality of lower characteristic patterns arranged at intervals along the circumferential direction of the folded ring portion, so
  • the shape of the above characteristic pattern is the same as the shape of the lower characteristic pattern, and the plurality of upper characteristic patterns are respectively arranged to cross the plurality of lower characteristic patterns along the surrounding direction of the folded ring portion.
  • both the upper characteristic pattern and the lower characteristic pattern are striped patterns; both ends of the stripes of the upper characteristic pattern are projected along the thickness direction of the ring portion, and one end is projected to the opposite one of the One end of the stripe of the lower characteristic pattern is overlapped, and the other end is projected to overlap with one end of the stripe of the lower characteristic pattern which is arranged opposite and adjacent to each other.
  • the folding ring portion has a rounded rectangular structure
  • the upper pattern mold portion includes four and each is located at the four rounded positions of the folding ring portion
  • the lower pattern mold portion includes four and each is located The positions of the four rounded corners of the folded ring portion.
  • the upper pattern mold portion is formed by recessing the upper surface of the folding ring toward the lower surface of the folding ring; the lower pattern mold portion is convex from the lower surface of the folding ring in a direction away from the upper surface of the folding ring. Out of formation.
  • the upper pattern mold portion is formed by protruding from the upper surface of the folding ring in a direction away from the lower surface of the folding ring; the lower pattern mold portion faces the upper surface of the folding ring from the lower surface of the folding ring The depression is formed.
  • the upper pattern mold portion is formed by the upper surface of the folding ring protruding away from the lower surface of the folding ring; the lower pattern mold portion is formed by the lower surface of the folding ring away from the upper surface of the folding ring The direction is convex.
  • the upper pattern mold portion is formed by recessing the upper surface of the folding ring toward the lower surface of the folding ring; the lower pattern mold portion is formed by recessing the lower surface of the folding ring toward the upper surface of the folding ring. .
  • the upper characteristic pattern has a strip-shaped structure and spans the folded ring portion; the lower characteristic pattern has a strip-shaped structure and spans the folded ring portion.
  • the diaphragm is made of any one material or multiple composite materials among silica gel, rubber, PEEK, and TPU.
  • the utility model also provides a sound generating device, which includes a basin frame, a diaphragm fixedly supported on the basin frame, and a voice coil for driving the diaphragm to vibrate.
  • the diaphragm is the aforementioned diaphragm provided by the utility model.
  • the diaphragm provided by the present utility model is provided with a convex or concave upper pattern forming part on the upper surface of the folding ring of the folding ring and a convex or concave forming part on the lower surface of the folding ring.
  • the lower pattern mold section wherein the upper pattern mold section includes a plurality of upper characteristic patterns, and the lower pattern mold section includes a plurality of lower characteristic patterns.
  • the upper characteristic patterns and the lower characteristic patterns have the same shape.
  • the surrounding directions are respectively arranged to cross a plurality of lower characteristic graphics.
  • the diaphragm can be adjusted according to needs to increase the structural strength of the diaphragm, and improve the R when the diaphragm vibrates up and down.
  • the corner is easy to be discounted.
  • the diaphragm When the diaphragm is used in a sounding device, it effectively improves the balance and stability of the vibration of the diaphragm, improves the pure tone, distortion and swing of the sounding device, and makes the acoustic performance of the sounding device better .
  • Figure 1 is a schematic structural diagram of the first embodiment of the diaphragm of the present invention.
  • Figure 2 is a sectional view taken along the line A-A in Figure 1;
  • Figure 3 is an enlarged view of the part shown by AA in Figure 2;
  • Figure 4 is a schematic structural diagram of the second embodiment of the diaphragm of the present invention.
  • Figure 5 is a sectional view taken along line B-B in Figure 4.
  • Fig. 6 is an enlarged view of the part shown in BB in Fig. 5;
  • Figure 7 is a schematic structural diagram of the third embodiment of the diaphragm of the present invention.
  • Figure 8 is a cross-sectional view taken along line C-C in Figure 7;
  • Fig. 9 is an enlarged view of the part shown by CC in Fig. 8;
  • Figure 10 is a schematic structural diagram of the fourth embodiment of the diaphragm of the present invention.
  • Figure 11 is a cross-sectional view taken along the line D-D in Figure 10;
  • Figure 12 is an enlarged view of the part shown by DD in Figure 11;
  • Figure 13 is an exploded schematic diagram of a part of the structure of the sound generating device of the present invention.
  • the present invention provides a diaphragm 10, which includes a central portion 1 and a folding ring portion 2 extending from the central portion 1 and surrounding the central portion 1.
  • the central portion 1 is used for vibrating and sounding, and the folded ring portion 2 is used for providing elastic supporting force for the central portion 1 to achieve the required amplitude of the central portion 1 when it vibrates.
  • the folding ring portion 2 includes a folding ring upper surface 21 and a folding ring lower surface 22 opposite to the folding ring upper surface 21.
  • the diaphragm 10 further includes an upper pattern mold formed by the convex or concave surface 21 of the folding ring. Portion 23 and a lower pattern mold portion 24 formed by protruding or recessing the lower surface 22 of the folding ring.
  • the folded ring portion 2 has a rounded rectangular structure
  • the upper pattern mold portion 23 includes four and is located at the four rounded corners of the folded ring portion 2
  • the lower pattern mold portion 24 includes four rounded corners. And are respectively located at the four rounded corners of the folded ring portion 2.
  • the location of the structure effectively improves the problem that the rounded corners (R angles) of the diaphragm 10 are easily broken when the diaphragm 10 vibrates up and down, thereby further improving the vibration balance and stability, and improving the pure tone, distortion and swing performance of the diaphragm 10.
  • the upper pattern mold portion 23 and the lower pattern mold portion 24 have the same structure, specifically:
  • the upper pattern mold portion 23 includes a plurality of upper characteristic patterns 231 arranged at intervals along the circumferential direction of the folding ring portion 2, and the upper characteristic patterns 231 are in a strip-shaped structure and straddle the folding ring portion 2.
  • the lower pattern mold portion 24 includes a plurality of lower characteristic patterns 241 arranged at intervals along the circumferential direction of the folding ring portion 2, and the lower characteristic patterns 241 are in a strip-shaped structure and straddle the folding ring portion 2.
  • the upper characteristic pattern 231 and the lower characteristic pattern 241 facing each other have the same shape.
  • the specific shape and structure of the upper characteristic pattern 231 and the lower characteristic pattern 241 are only an example, but not limited to the above examples, as long as the shape of the upper characteristic pattern 231 and the lower characteristic pattern 241 are the same. To achieve the purpose of the utility model.
  • the plurality of upper characteristic patterns 231 are arranged to cross the plurality of lower characteristic patterns 241 along the circumferential direction of the folded ring portion 2, that is, the upper characteristic patterns facing each other 231 and the lower characteristic graphic 241 are arranged in an intersection.
  • both the upper characteristic pattern 231 and the lower characteristic pattern 241 are striped patterns.
  • the two ends of the stripe of the upper characteristic pattern 231 are projected along the thickness direction of the ring portion 2, one end of which is projected to overlap with one end of the stripe of the lower characteristic pattern 241 arranged opposite, and the other end is projected to be opposite to One end of the stripe of the adjacent lower feature pattern 241 overlaps.
  • the plurality of upper characteristic patterns 231 and the plurality of lower characteristic patterns 241 are sequentially connected in series to form a coil shape surrounding the folding ring portion 2 through their respective ends.
  • the above structure does not change the overall weight of the diaphragm 10 too much, and has no significant impact on its resonance frequency F0, sound pressure level SPL and other performance.
  • the above-mentioned double-sided design of the diaphragm 10 makes the upper surface 21 of the folding ring and the lower surface 22 of the folding ring portion 2 form the same type of graphic structure and are arranged to cross each other.
  • the design methods are flexible and diverse, and the vibration can be adjusted according to the needs.
  • the structural strength of the diaphragm effectively improves the problem of easy discounting at the R angle when the diaphragm 10 vibrates up and down, effectively improves the balance and stability of the vibration of the diaphragm 10, improves its pure tone, distortion and swing problems, and has better acoustic performance.
  • the diaphragm 10 is made of any one material or multiple composite materials among silica gel, rubber, PEEK, and TPU. More preferably, the diaphragm 10 is an integrally formed structure.
  • the formation of the upper pattern mold portion 23 and the lower pattern mold portion 24 includes but is not limited to the following four embodiments:
  • FIG. 1(a), FIG. 2 and FIG. 3 is the front surface of the diaphragm 10, which corresponds to the upper surface 21 of the folding ring.
  • the upper pattern mold portion 23 is formed by recessing the upper surface 21 of the folding ring toward the lower surface 22 of the folding ring, that is, the upper pattern mold portion 23 has a groove-shaped structure.
  • FIG. 1(b), FIG. 2 and FIG. 3 is the back surface of the diaphragm 10, which corresponds to the lower surface 22 of the folding ring.
  • the lower pattern mold portion 24 is formed by protruding the lower surface 22 of the folding ring in a direction away from the upper surface 21 of the folding ring, that is, the lower pattern mold portion 24 has a corrugated structure.
  • FIG. 4(a), FIG. 5 and FIG. 6 is the front surface of the diaphragm 210, which corresponds to the upper surface 221 of the folding ring.
  • the upper pattern mold portion 223 is formed by protruding from the upper surface 221 of the folding ring in a direction away from the lower surface 222 of the folding ring, that is, the upper pattern mold portion 223 has a convex corrugated structure.
  • FIG. 4( b ), FIG. 5 and FIG. 6 at the same time, which is the back surface of the diaphragm 210, which corresponds to the lower surface 222 of the folding ring.
  • the lower pattern mold portion 224 is formed by recessing the lower surface 222 of the folding ring toward the upper surface 221 of the folding ring, that is, the lower pattern mold portion 224 has a groove-shaped structure.
  • FIG. 7(a), FIG. 8 and FIG. 9 is the front surface of the diaphragm 310, which corresponds to the upper surface 321 of the folding ring.
  • the upper pattern mold portion 323 is formed by protruding from the upper surface 321 of the folding ring in a direction away from the lower surface 322 of the folding ring, that is, the upper pattern mold portion 323 has a convex corrugated structure.
  • FIG. 7(b), FIG. 8 and FIG. 9 is the back surface of the diaphragm 310, which corresponds to the lower surface 322 of the folding ring.
  • the lower pattern mold portion 324 is formed by the lower surface 322 of the folding ring protruding away from the upper surface 321 of the folding ring, that is, the lower pattern mold portion 324 has a convex corrugated structure.
  • FIG. 10(a), FIG. 11 and FIG. 12 is the front surface of the diaphragm 410, which corresponds to the upper surface 421 of the folding ring.
  • the upper pattern mold portion 423 is formed by recessing the upper surface 421 of the folding ring toward the lower surface 422 of the folding ring, that is, the upper pattern mold portion 423 has a groove-shaped structure.
  • FIG. 10( b ), FIG. 11 and FIG. 12 at the same time, which is the back surface of the diaphragm 410, which corresponds to the lower surface 422 of the folding ring.
  • the lower pattern mold portion 424 is formed by recessing the lower surface 422 of the folding ring toward the upper surface 421 of the folding ring, that is, the lower pattern mold portion 424 has a groove-shaped structure.
  • the present invention provides a sound emitting device 100, and the sound emitting device 100 includes the above-mentioned diaphragm 10.
  • the sound emitting device 100 includes a basin frame 20, the diaphragm 10 fixedly supported on the basin frame 20, a voice coil 30 that drives the diaphragm 10 to vibrate and produce sound, and a magnetic frame fixed to the basin frame 20.
  • Road system 40 the sound emitting device 100 includes a basin frame 20, the diaphragm 10 fixedly supported on the basin frame 20, a voice coil 30 that drives the diaphragm 10 to vibrate and produce sound, and a magnetic frame fixed to the basin frame 20.
  • Road system 40 the sound emitting device 100 includes a basin frame 20, the diaphragm 10 fixedly supported on the basin frame 20, a voice coil 30 that drives the diaphragm 10 to vibrate and produce sound.
  • the basin frame 20 is used to fix and support the diaphragm 10 and the magnetic circuit system 40.
  • the voice coil 30 is fixed to the diaphragm 10, the electric field generated by the voice coil 30 and the magnetic field generated by the magnetic circuit system 40 work together to form an electromagnetic field, so that the voice coil 30 moves up and down repeatedly, and then passes through the The voice coil 30 drives the diaphragm 10 to vibrate and produce sound.
  • the diaphragm provided by the present utility model is provided with a convex or concave upper pattern forming part on the upper surface of the folding ring of the folding ring and a convex or concave forming part on the lower surface of the folding ring.
  • the lower pattern mold section wherein the upper pattern mold section includes a plurality of upper characteristic patterns, the lower pattern mold section includes a plurality of lower characteristic patterns, and the characteristic patterns have the same shape as the lower characteristic patterns, and the plurality of upper characteristic patterns surround the loop part
  • the directions are arranged crosswise with a plurality of lower characteristic graphics respectively.
  • This structure makes the upper surface of the folding ring and the lower surface of the folding ring form the same type of pattern structure and the two patterns are arranged in a cross. It can be adjusted according to needs to increase the structural strength of the diaphragm, and improve the R when the diaphragm vibrates up and down. The corner is easy to be discounted.
  • the diaphragm When the diaphragm is used in a sounding device, it effectively improves the balance and stability of the vibration of the diaphragm, improves the pure tone, distortion and swing of the sounding device, and makes the acoustic performance of the sounding device better .

Abstract

本实用新型公开一种振膜，其包括中心部和折环部，折环部包括折环上表面和与折环上表面相对的折环下表面，振膜还包括由折环上表面凸出或凹陷形成的上图形模部以及由折环下表面凸出或凹陷形成的下图形模部，上图形模部包括沿折环部的环绕方向间隔设置的多个上特征图形，下图形模部包括沿折环部的环绕方向间隔设置的多个下特征图形，上特征图形与下特征图形的形状相同，多个上特征图形沿折环部的环绕方向分别与多个下特征图形交叉排布。本实用新型还提供一种运用该振膜的发声器件。与相关技术相比，本实用新型的振膜及发声器件稳定性好且声学性能更优。

Description

振膜及发声器件 技术领域
本实用新型涉及电声转换领域，尤其涉及一种振膜和运用该振膜的发声器件。
 背景技术
在移动电话等便携设备快速发展的过程中，人们对产品的功能性要求越来越强，对于移动电话等 电子设备的音乐欣赏这一功能，为了使娱乐效果更强，出现了音乐带振动的模式，由此，发声器件的发展也相应加快。
相关技术的发声器件包括盆架、支撑于所述盆架的振膜和驱动所述振膜振动的音圈。所述振膜包括中心部和由所述中心部延伸并环绕所述中心部设置的折环部。
 技术问题
然而，相关技术的发声器件中，所述折环部的横截面呈弧形结构且折环部的上表面和下表面均为光滑面结构，该结构使得所述振膜的声学性能无法进一步提升，振膜振动时可能产生摇摆，进而导致杂音甚至失真，造成所述发声器件的声学性能受限。
因此，有必要提供一种新的振膜及发声器件解决上述技术问题。
 技术解决方案
本实用新型的目的是克服上述技术问题，提供一种稳定性好且声学性能更优的振膜及发声器件。
本实用新型提供一种振膜，其包括中心部和由所述中心部延伸并环绕所述中心部设置的折环部，所述折环部包括折环上表面和与所述折环上表面相对的折环下表面，所述振膜还包括由所述折环上表面凸出或凹陷形成的上图形模部以及由所述折环下表面凸出或凹陷形成的下图形模部，所述上图形模部包括沿所述折环部的环绕方向间隔设置的多个上特征图形，所述下图形模部包括沿所述折环部的环绕方向间隔设置的多个下特征图形，所述上特征图形与所述下特征图形的形状相同，多个所述上特征图形沿所述折环部的环绕方向分别与多个所述下特征图形交叉排布。
优选的，所述上特征图形与所述下特征图形的均为条纹花纹；所述上特征图形的条纹两端沿所述折环部厚度方向的投影，其中一端投影与相对设置的一条所述下特征图形的条纹一端的重叠，其另一端投影与相对设置且相邻一条所述下特征图形的条纹一端的重叠。
优选的，所述折环部呈圆角矩形结构，所述上图形模部包括四个且分别位于所述折环部的四个圆角位置；所述下图形模部包括四个且分别位于所述折环部的四个圆角的位置。
优选的，所述上图形模部由所述折环上表面向所述折环下表面方向凹陷形成；所述下图形模部由所述折环下表面向远离所述折环上表面方向凸出形成。
优选的，所述上图形模部由所述折环上表面向远离所述折环下表面方向凸出形成；所述下图形模部由所述折环下表面向所述折环上表面方向凹陷形成。
优选的，所述上图形模部由所述折环上表面向远离所述折环下表面方向凸出形成；所述下图形模部由所述折环下表面向远离所述折环上表面方向凸出形成。
优选的，所述上图形模部由所述折环上表面向所述折环下表面方向凹陷形成；所述下图形模部由所述折环下表面向所述折环上表面方向凹陷形成。
优选的，所述上特征图形呈条形结构且横跨所述折环部；所述下特征图形呈条形结构且横跨所述折环部。
优选的，所述振膜为硅胶、橡胶、PEEK、TPU中的任意一种材料或多种复合材料制成。
本实用新型还提供一种发声器件，包括盆架、固定支撑于所述盆架的振膜和驱动所述振膜振动的音圈，所述振膜为本实用新型提供的上述振膜。
 有益效果
与现有技术相比，本实用新型提供的振膜在其折环部的折环上表面设置凸出或凹陷形成的上图形模部以及在所述折环下表面设置凸出或凹陷形成的下图形模部，其中，上图形模部包括多个上特征图形，下图形模部包括多个下特征图形，上特征图形与下特征图形的形状相同，多个上特征图形沿折环部的环绕方向分别与多个下特征图形交叉排布。该结构使得折环部的折环上表面和折环下表面形成相同类型图形结构且两个图形呈交叉设置，能够按需针对性的调整提高振膜的结构强度，改善振膜上下振动时R角处容易打折的问题，当该振膜运用于发声器件中时，有效提高了振膜振动的平衡性及稳定性，改善了发声器件的纯音、失真及摇摆，使得发声器件的声学性能更优。
 附图说明
为了更清楚地说明本实用新型实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本实用新型的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1为本实用新型的振膜实施例一的结构示意图；
图2为沿图1中A-A线的剖示图；
图3为图2中AA所示部分的放大图；
图4为本实用新型的振膜实施例二的结构示意图；
图5为沿图4中B-B线的剖示图；
图6为图5中BB所示部分的放大图；
图7为本实用新型的振膜实施例三的结构示意图；
图8为沿图7中C-C线的剖示图；
图9为图8中CC所示部分的放大图；
图10为本实用新型的振膜实施例四的结构示意图；
图11为沿图10中D-D线的剖示图；
图12为图11中DD所示部分的放大图；
图13为本实用新型的发声器件的部分结构分解示意图。
 本发明的实施方式
下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型的一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本实用新型保护的范围。
请参阅图1，本实用新型提供一种振膜10，其包括中心部1和由所述中心部1延伸并环绕所述中心部1设置的折环部2。
所述中心部1用于振动发声，所述折环部2用于为所述中心部1振动时提供弹性支撑力以实现中心部1所需的振幅。
所述折环部2包括折环上表面21和与所述折环上表面21相对的折环下表面22。
为了调节改善振膜10的纯音、失真、稳定性、振动平衡性等声学性能，本实施方式中，所述振膜10还包括由所述折环上表面21凸出或凹陷形成的上图形模部23以及由所述折环下表面22凸出或凹陷形成的下图形模部24。
具体的，所述折环部2呈圆角矩形结构，所述上图形模部23包括四个且分别位于所述折环部2的四个圆角位置；所述下图形模部24包括四个且分别位于所述折环部2的四个圆角的位置。该结构位置的设置，有效改善了振膜10上下振动时圆角（R角）处容易打折的问题，从而进一步改善振动平衡性及稳定性，改善振膜10的纯音、失真及摇摆性能。
本实施方式中，所述上图形模部23和所述下图形模部24结构相同，具体的：
所述上图形模部23包括沿所述折环部2的环绕方向间隔设置的多个上特征图形231，所述上特征图形231呈条形结构且横跨所述折环部2。
所述下图形模部24包括沿所述折环部2的环绕方向间隔设置的多个下特征图形241，所述下特征图形241呈条形结构且横跨所述折环部2。
在本实施方式中，相互正对的所述上特征图形231与所述下特征图形241的形状相同。当然，所述上特征图形231与所述下特征图形241的具体形状结构仅为一种举例，但并不限于上述举例，只要满足所述上特征图形231与所述下特征图形241形状相同即实现本实用新型的目的。
在本实施方式中，多个所述上特征图形231沿所述折环部2的环绕方向分别与多个所述下特征图形241交叉排布也就是说，相互正对的所述上特征图形231与所述下特征图形241呈交叉设置。所述上图形模部23与所述下图形模部24分别沿所述中心部1的振动方向向所述中心部1所在的平面的正投影相互交叉，即该两个正投影只有部分重合。
在本实施方式中，所述上特征图形231与所述下特征图形241的均为条纹花纹。所述上特征图形231的条纹两端沿所述折环部2厚度方向的投影，其中一端投影与相对设置的一条所述下特征图形241的条纹一端的重叠，其另一端投影与相对设置且相邻一条所述下特征图形241的条纹一端的重叠。也就是说，多个所述上特征图形231与多个所述下特征图形241通过各自两端依次串联成绕设所述折环部2的线圈形状。
上述结构不会过多改变振膜10的整体重量，对其谐振频率F0、声压级SPL等性能无明显影响。而振膜10的上述双面设计使得折环部2的折环上表面21和折环下表面22形成相同类型图形结构且相互交叉设置，设计方式灵活多样，能够按需针对性的调整提高振膜的结构强度，有效改善振膜10上下振动时R角处容易打折的问题，有效提高了振膜10振动的平衡性及稳定性，改善了其纯音、失真及摇摆问题，声学性能更优。
本实施方式中，所述振膜10为硅胶、橡胶、PEEK、TPU中的任意一种材料或多种复合材料制成。更优的，所述振膜10为一体成型结构。
本实用新型中，上图形模部23和下图形模部24的形成提供包括但不限于如下四种实施方式：
实施方式一
请同时参考图1（a）、图2和图3，为振膜10的正面，其与折环上表面21对应。所述上图形模部23由所述折环上表面21向所述折环下表面22方向凹陷形成，即上图形模部23呈槽状结构。
请同时参考图1（b）、图2和图3，为振膜10的背面，其与折环下表面22对应。所述下图形模部24由所述折环下表面22向远离所述折环上表面21方向凸出形成，即下图形模部24呈凸楞结构。
实施方式二
请同时参考图4（a）、图5和图6，为振膜210的正面，其与折环上表面221对应。所述上图形模部223由所述折环上表面221向远离所述折环下表面222方向凸出形成，即上图形模部223呈凸楞结构。
请同时参考图4（b）、图5和图6，为振膜210的背面，其与折环下表面222对应。所述下图形模部224由所述折环下表面222向所述折环上表面221方向凹陷形成，即下图形模部224呈槽状结构。
实施方式三
请同时参考图7（a）、图8和图9，为振膜310的正面，其与折环上表面321对应。所述上图形模部323由所述折环上表面321向远离所述折环下表面322方向凸出形成，即上图形模部323呈凸楞结构。
请同时参考图7（b）、图8和图9，为振膜310的背面，其与折环下表面322对应。所述下图形模部324由所述折环下表面322向远离所述折环上表面321方向凸出形成，即下图形模部324呈凸楞结构。
实施方式四
请同时参考图10（a）、图11和图12，为振膜410的正面，其与折环上表面421对应。所述上图形模部423由所述折环上表面421向所述折环下表面422方向凹陷形成，即上图形模部423呈槽状结构。
请同时参考图10（b）、图11和图12，为振膜410的背面，其与折环下表面422对应。所述下图形模部424由所述折环下表面422向所述折环上表面421方向凹陷形成，即下图形模部424呈槽状结构。
请结合参阅图13，本实用新型提供一种发声器件100，所述发声器件100包括上述振膜10。
具体的，所述发声器件100包括盆架20、固定支撑于所述盆架20的所述振膜10、驱动所述振膜10振动发声的音圈30和固定于所述盆架20的磁路系统40。
所述盆架20用于固定支撑所述振膜10和所述磁路系统40。
所述音圈30固定于所述振膜10，所述音圈30通电产生电场与所述磁路系统40产生磁场共同作用形成电磁场，从而使所述音圈30上下反复运动，进而通过所述音圈30驱动所述振膜10振动发声。
与现有技术相比，本实用新型提供的振膜在其折环部的折环上表面设置凸出或凹陷形成的上图形模部以及在所述折环下表面设置凸出或凹陷形成的下图形模部，其中，上图形模部包括多个上特征图形，下图形模部包括多个下特征图形，特征图形与下特征图形的形状相同，多个上特征图形沿折环部的环绕方向分别与多个下特征图形交叉排布。该结构使得折环部的折环上表面和折环下表面形成相同类型图形结构且两个图形呈交叉设置，能够按需针对性的调整提高振膜的结构强度，改善振膜上下振动时R角处容易打折的问题，当该振膜运用于发声器件中时，有效提高了振膜振动的平衡性及稳定性，改善了发声器件的纯音、失真及摇摆，使得发声器件的声学性能更优。
以上所述仅为本实用新型的实施例，并非因此限制本实用新型的专利范围，凡是利用本实用新型说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其它相关的技术领域，均同理包括在本实用新型的专利保护范围内。

Claims (10)

  1. 一种振膜，其包括中心部和由所述中心部延伸并环绕所述中心部设置的折环部，所述折环部包括折环上表面和与所述折环上表面相对的折环下表面，其特征在于，所述振膜还包括由所述折环上表面凸出或凹陷形成的上图形模部以及由所述折环下表面凸出或凹陷形成的下图形模部，所述上图形模部包括沿所述折环部的环绕方向间隔设置的多个上特征图形，所述下图形模部包括沿所述折环部的环绕方向间隔设置的多个下特征图形，所述上特征图形与所述下特征图形的形状相同，多个所述上特征图形沿所述折环部的环绕方向分别与多个所述下特征图形交叉排布。
  2. 根据权利要求1所述的振膜，其特征在于，所述上特征图形与所述下特征图形的均为条纹花纹；所述上特征图形的条纹两端沿所述折环部厚度方向的投影，其中一端投影与相对设置的一条所述下特征图形的条纹一端的重叠，其另一端投影与相对设置且相邻一条所述下特征图形的条纹一端的重叠。
  3. 根据权利要求2所述的振膜，其特征在于，所述折环部呈圆角矩形结构，所述上图形模部包括四个且分别位于所述折环部的四个圆角位置；所述下图形模部包括四个且分别位于所述折环部的四个圆角的位置。
  4. 根据权利要求3所述的振膜，其特征在于，所述上图形模部由所述折环上表面向所述折环下表面方向凹陷形成；所述下图形模部由所述折环下表面向远离所述折环上表面方向凸出形成。
  5. 根据权利要求3所述的振膜，其特征在于，所述上图形模部由所述折环上表面向远离所述折环下表面方向凸出形成；所述下图形模部由所述折环下表面向所述折环上表面方向凹陷形成。
  6. 根据权利要求3所述的振膜，其特征在于，所述上图形模部由所述折环上表面向远离所述折环下表面方向凸出形成；所述下图形模部由所述折环下表面向远离所述折环上表面方向凸出形成。
  7. 根据权利要求3所述的振膜，其特征在于，所述上图形模部由所述折环上表面向所述折环下表面方向凹陷形成；所述下图形模部由所述折环下表面向所述折环上表面方向凹陷形成。
  8. 根据权利要求4-7任意一项所述的振膜，其特征在于，所述上特征图形呈条形结构且横跨所述折环部；所述下特征图形呈条形结构且横跨所述折环部。
  9. 根据权利要求8所述的振膜，其特征在于，所述振膜为硅胶、橡胶、PEEK、TPU中的任意一种材料或多种复合材料制成。
  10. 一种发声器件，包括盆架、固定支撑于所述盆架的振膜和驱动所述振膜振动的音圈，其特征在于，所述振膜为权利要求1~9任意一项所述的振膜。
PCT/CN2019/129872 2019-12-30 2019-12-30 振膜及发声器件 WO2021134189A1 (zh)

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CN106231508A (zh) * 2016-08-30 2016-12-14 歌尔股份有限公司 一种振膜
CN206923019U (zh) * 2017-06-20 2018-01-23 瑞声科技(新加坡)有限公司 振膜、发声器件及电子设备
CN108900955A (zh) * 2018-06-27 2018-11-27 歌尔股份有限公司 振膜和扬声器
US20180367907A1 (en) * 2017-06-20 2018-12-20 Aac Technologies Pte, Ltd. Vibration Diaphragm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106231508A (zh) * 2016-08-30 2016-12-14 歌尔股份有限公司 一种振膜
CN206923019U (zh) * 2017-06-20 2018-01-23 瑞声科技(新加坡)有限公司 振膜、发声器件及电子设备
US20180367907A1 (en) * 2017-06-20 2018-12-20 Aac Technologies Pte, Ltd. Vibration Diaphragm
CN108900955A (zh) * 2018-06-27 2018-11-27 歌尔股份有限公司 振膜和扬声器

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