WO2021119916A1 - 一种振膜及扬声器 - Google Patents
一种振膜及扬声器 Download PDFInfo
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- WO2021119916A1 WO2021119916A1 PCT/CN2019/125637 CN2019125637W WO2021119916A1 WO 2021119916 A1 WO2021119916 A1 WO 2021119916A1 CN 2019125637 W CN2019125637 W CN 2019125637W WO 2021119916 A1 WO2021119916 A1 WO 2021119916A1
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- wall
- thickness
- ring
- axis side
- folding
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Classifications
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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
- H04R7/12—Non-planar diaphragms or cones
Definitions
- the utility model belongs to the technical field of electroacoustics, and particularly relates to a diaphragm and a loudspeaker.
- the diaphragm of the speaker has the same thickness at different positions, but the structural strength of the diaphragm of the same thickness is different at different positions, which cannot meet the strength required by the actual product at a specific position.
- the inner side of the diaphragm is easy to vibrate up and down. There is a discount, and it is easy to swing, resulting in poor performance.
- the purpose of the utility model is to provide a diaphragm and a loudspeaker, aiming to improve the structural strength at different positions of the vibrating membrane, meet the different strength requirements of different positions of the vibrating membrane, and improve the performance of the loudspeaker.
- a diaphragm which includes a dome at the center, a folding ring part surrounding the outer side of the dome, and a connecting part surrounding the outer side of the folding ring part.
- the folded ring portion includes two oppositely arranged long axis sides, two oppositely arranged short axis sides, and a rounded portion connecting the adjacent long axis side and the short axis side.
- the folded ring portion includes The inner wall of the fold ring of the dome, the outer wall of the fold ring opposite to the inner wall of the fold ring and connected to the connecting portion, and the top wall connecting the inner wall of the fold ring and the outer wall of the fold ring are located at the corners
- the thickness of the outer wall of the folding ring is less than the thickness of the inner wall of the folding ring at the rounded portion, and the thickness of the outer wall of the folding ring at the minor axis side is smaller than the thickness of the inner wall of the folding ring at the minor axis side thickness of.
- the thickness of the outer wall of the folding ring located on the long axis side is the same as the thickness of the inner wall of the folding ring located on the long axis side.
- the thickness of the inner wall of the folded ring at the rounded portion is the same as the thickness of the inner wall of the folded ring at the long axis side, and the thickness of the outer wall of the folded ring at the rounded portion is less than The thickness of the outer wall of the folded ring on the long axis side; and/or the thickness of the inner wall of the folded ring on the minor axis side is the same as the thickness of the inner wall of the folded ring on the long axis side, located The thickness of the outer wall of the folded ring on the minor axis side is smaller than the thickness of the outer wall of the folded ring on the major axis side.
- the thickness of the inner wall of the folded ring at the rounded portion is greater than the thickness of the inner wall of the folded ring at the long axis side, and the thickness of the outer wall of the folded ring at the rounded portion is greater than the thickness of the outer wall of the folded ring at the rounded portion.
- the thickness of the outer wall of the folded ring on the major axis side is the same; and/or the thickness of the inner wall of the folded ring on the minor axis side is greater than the thickness of the inner wall of the folded ring on the major axis side.
- the thickness of the outer wall of the folded ring on the minor axis side is the same as the thickness of the outer wall of the folded ring on the major axis side.
- the inner wall of the folding ring and the top wall are smoothly transitionally connected, the outer wall of the folding ring and the top wall are smoothly transitionally connected, and the thickness of the top wall at the rounded portion is self-connecting to the folding ring
- the end of the inner wall gradually decreases to the end connecting the outer wall of the folding ring, and the thickness of the top wall at the side of the short axis gradually decreases from the end connecting the inner wall of the folding ring to the end connecting the outer wall of the folding ring.
- folding ring part and the dome are an integral structure.
- the diaphragm further includes a fixing part located on the side of the folding ring part close to the dome and connected to the folding ring part, the fixing part is provided with an opening, and the dome covers the opening And fixedly connected with the fixing part.
- the diaphragm material is a polymer material.
- the diaphragm material is silica gel, rubber, PEEK (Polyetheretherketone, polyether ether ketone) material, or TPU (Thermoplastic polyurethanes, thermoplastic polyurethane elastomer rubber) material.
- a speaker including a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system, the vibration system comprising a diaphragm fixed on the top of the basin frame, the diaphragm being any one of the above Kind of the diaphragm.
- the beneficial effect of the utility model is that: the utility model designs the thickness of the fold ring at the corners of the diaphragm and the side of the short axis to be thin outside and thick inside, which can significantly improve the stiffness of the diaphragm at the position of the round corners and the side of the short axis.
- the structural strength of the rounded corners and the inner side of the short axis improves the problem that the inner side of the diaphragm is easy to be broken when the diaphragm vibrates up and down, and simultaneously improves the balance and stability of the vibration system, balances the insufficient strength of the short axis of the folding ring, and improves the pure tone of the product ; And because the thickness of the diaphragm fold ring is only partially changed, the overall weight of the diaphragm will not be excessively changed to ensure that the resonance frequency, sound pressure level and other performance changes are small; not only that, it can also increase the lower amplitude of the product and suppress the upper amplitude, Synchronously optimize the problem of asymmetry of the left and right deviation of the highest point of the upper and lower amplitude, improve product swing and reduce distortion.
- Figure 1 is a schematic diagram of the overall structure of a diaphragm provided by an embodiment of the present invention
- FIG. 2 is a schematic diagram of a top view structure of a speaker provided by an embodiment of the present invention.
- Fig. 3 is a schematic diagram of an exploded structure of a speaker provided by an embodiment of the present invention.
- Fig. 4 is a schematic cross-sectional view taken along the B-B direction of Fig. 2;
- Fig. 5 is a schematic cross-sectional view taken along the A-A direction of Fig. 2;
- Fig. 6 is a schematic diagram of an enlarged structure of part E in Fig. 5;
- Fig. 7 is a schematic cross-sectional view taken along the C-C direction of Fig. 2;
- FIG. 8 is a schematic diagram of an enlarged structure of part D in FIG. 7.
- the diaphragm 21 includes a dome 212 located in the center, a folding ring portion 211 arranged around the outer side of the dome 212, and a ring portion 211 arranged around the fold.
- the connecting portion 213 outside the ring portion 211, the folded ring portion 211 includes two opposite long axis sides 2111, two opposite short axis sides 2112, and rounded corners connecting adjacent long axis sides 2111 and short axis sides 2112 ⁇ 2113.
- the folding ring portion 211 includes a folding ring inner wall 2115 close to the dome 212, a folding ring outer wall 2114 opposite to the folding ring inner wall 2115 and connected to the connecting portion 213, and a connecting folding ring inner wall 2115 and the folding ring
- the top wall 2116 of the outer wall 2114, the thickness of the folded ring outer wall 2114 (H1 shown in Figure 8) on the rounded corner 2113 is smaller than the thickness of the folded ring inner wall 2115 on the rounded corner 2113 (H2 shown in Figure 8 ), the thickness of the outer wall 2114 of the folding ring on the short axis side 2112 (H4 shown in FIG.
- the thickness of the folding ring 211 at the position of the rounded portion 2113 and the position of the short axis side 2112 is designed to be thin on the outside and thicker inside, which can significantly increase the rigidity of the diaphragm 21 at the rounded portion 2113 and the short axis side 2112, and improve the roundness.
- the structural strength of the inner side of the corner 2113 and the short axis side 2112 can improve the problem that the inner side of the diaphragm 21 is easy to be folded when the diaphragm 21 vibrates up and down, and simultaneously improve the balance and stability of the vibration system 20.
- the short axis side 2112 of the balance folding ring 211 is not strong enough To improve the product pure tone. Moreover, since the thickness of the folded ring portion 211 is only partially changed, the overall weight of the diaphragm 21 will not be excessively changed to ensure that the resonance frequency, sound pressure level and other performance changes are small; not only that, it can also increase the lower amplitude of the product and suppress the upper amplitude , Synchronously optimize the problem of asymmetrical deviation of the highest point of the upper and lower amplitude, improve product swing and reduce distortion.
- the thickness of the outer wall 2114 of the folding ring located on the long axis side 2111 is the same as the thickness of the inner wall 2115 of the folding ring located on the long axis side 2111.
- the thickness of the folded ring portion 211 at the rounded portion 2113 and the short-axis side 2112 is changed, and the thickness on the long-axis side 2111 remains unchanged. Therefore, the overall weight of the diaphragm 21, the resonance frequency, and the sound are not changed excessively. Performance changes such as pressure level are small.
- the outer wall of the folded ring 2114 at the rounded portion 2113 can be thinned relative to the outer wall 2114 of the long axis side 2111.
- the thickness is smaller than the thickness of the folded ring outer wall 2114 of the major axis side 2111, and the thickness of the folded ring inner wall 2115 at the rounded corner portion 2113 is the same as the thickness of the folded ring inner wall 2115 at the major axis side 2111.
- the outer wall 2114 of the folding ring at the minor axis side 2112 can be thinned so that its thickness is smaller than the thickness of the outer wall 2114 of the folding ring at the major axis side 2111, and the thickness of the inner wall 2115 of the folding ring at the minor axis side 2112 is equal to the thickness of the inner wall 2115 at the minor axis 2112.
- the thickness of the inner wall 2115 of the folded ring of the long axis side 2111 is the same.
- the inner wall 2115 of the folded ring located at the rounded portion 2113 is thickened so that its thickness is greater than the thickness of the inner wall 2115 of the folded ring located at the long axis side 2111, and the thickness of the outer wall 2114 of the folded ring located at the rounded portion 2113
- the thickness of the outer wall 2114 of the folded ring located on the long axis side 2111 is the same.
- the rounded portion 2113 and the short-axis side 2112 are respectively thinned by the outer wall of the folding ring 2114 or thickened by the inner wall of the folding ring 2115 to realize that the thickness of the inner wall of the folding ring 2115 is greater than the thickness of the outer wall of the folding ring 2114 can be selected according to actual requirements.
- the inner wall 2115 of the folded ring is smoothly connected to the top wall 2116, and the outer wall 2114 of the folded ring is smoothly connected to the top wall 2116.
- the thickness of the top wall 2116 at the rounded portion 2113 is from The end of the inner wall 2115 of the connecting fold ring gradually decreases to the end of the outer wall 2114 of the connecting fold ring.
- the thickness of the top wall 2116 (H6 shown in FIG. 6) located on the short axis side 2112 is from the end of the inner wall 2115 of the connecting fold ring to the connecting fold One end of the ring outer wall 2114 gradually decreases.
- the thickness of the outer wall 2114 of the folded ring on the rounded portion 2113 and the inner wall 2115 on the rounded portion 2113 transition in a gradual manner through the top wall 2116 on the rounded portion 2113, and the folded ring of the short axis side 2112
- the thickness of the outer wall 2114 and the thickness of the folding ring inner wall 2115 of the short axis side 2112 transition in a gradual manner through the top wall 2116 on the short axis side 2112, and the specific thickness range and the starting point position are not limited, and can be changed according to Actual demand adjustment.
- the diaphragm 21 of this embodiment further includes a fixing part 214 located on the side of the folding ring part 211 close to the dome 212 and connected to the folding ring part 211.
- the fixing part 214 is provided with an opening 2141.
- the dome 212 covers the opening 2141 and is connected to the fixing part. 214 fixed connection.
- the folding ring portion 211 and the dome 212 may also be an integral structure.
- the material of the diaphragm 21 in this embodiment is a polymer material, specifically, it may be silica gel, rubber, PEEK material or TPU material.
- the embodiment of the present invention also provides a speaker.
- the speaker includes a basin frame 10, a vibration system 20 fixed to the basin frame 10, and a magnetic circuit system 30.
- the vibration system 20 includes a frame fixed to the basin frame.
- the diaphragm 21 on the top of 10, the diaphragm 21 is the diaphragm 21 in the above technical solution.
- the vibration system 20 also includes a voice coil 22 connected to one side of the diaphragm 21 and driving the diaphragm 21 to vibrate, an elastic member 23 connected to the end of the voice coil 22 away from the diaphragm 21, and two lower sound diaphragms corresponding to the diaphragm 21 24.
- the basin frame 10 and the diaphragm 21 are fixed by glue.
- the elastic member 23 is a flexible circuit board, and the voice coil 22 is electrically connected to the elastic member 23.
- the voice coil 22 can be used to provide support for the voice coil 22, and on the other hand, it can introduce external electrical signals to the voice coil 22 to avoid the use of wires.
- the voice coil 22 is easily broken when the external electrical signal is introduced, which improves its reliability.
- the speaker of this embodiment is provided with two opposite elastic members 23.
- the symmetrical structure of the dual elastic members 23 makes the support effect of the voice coil 22 more stable, better prevents the lateral swing of the voice coil 22, and improves the vibration performance of the vibration system 20. reliability.
- the magnetic circuit system 30 includes a main magnet 31, auxiliary magnets 32 located on opposite sides of the main magnet 31, and pole cores 33 attached to the main magnet 31.
- the auxiliary magnets 32 are spaced apart from the main magnet. 31, and form a magnetic gap with the main magnet 31, the voice coil 22 is fixedly arranged in the magnetic gap
- the magnetic circuit system 30 also includes a yoke 35 for fixing the main magnet 31 and the auxiliary magnet 32, and the magnetic The magnetic conductive plate 36 opposite to the yoke 35 is embedded and fixed on the basin frame 10.
- the main magnet 31 and the pole core 33, the main magnet 31 and the yoke 35, the auxiliary magnet 32 and the yoke 35, and the auxiliary magnet 32 and the magnetic conductive plate 36 are fixed by glue.
- the pole core 33 and the magnetic conductive plate 36 attached to the surface of the main magnet 31 and the auxiliary magnet 32 can conduct magnetism, converge the magnetic field, and make the magnetic field lines of the magnetic circuit system 30 be cut by the voice coil 22 as much as possible. Form a greater driving force.
- the thickness of the folded ring portion 211 at the position of the rounded portion 2113 and the position of the short axis side 2112 is designed to be thin on the outside and thick on the inside, which can significantly increase the rounded portion 2113 and the short
- the rigidity of the diaphragm 21 at the shaft side 2112 improves the structural strength of the rounded portion 2113 and the inner side of the short shaft side 2112, improves the problem that the inner side of the diaphragm 21 is easily buckled when the diaphragm 21 vibrates up and down, and simultaneously improves the balance and stability of the vibration system 20 , Balance the problem of insufficient strength of the short axis side 2112 of the folding ring portion 211, and improve the pure tone of the product.
- the overall weight of the diaphragm 21 will not be excessively changed to ensure that the resonance frequency, sound pressure level and other performance changes are small; not only that, it can also increase the lower amplitude of the product and suppress the upper amplitude , Synchronously optimize the problem of asymmetrical deviation of the highest point of the upper and lower amplitude, improve product swing and reduce distortion.
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Abstract
本实用新型提供了一种振膜及扬声器，振膜包括位于中央位置的球顶、环绕设置在球顶外侧的折环部以及环绕设置在折环部外侧的连接部，折环部包括相对设置的两个长轴边、相对设置的两个短轴边以及连接相邻的长轴边和短轴边的圆角部，折环部包括靠近球顶的折环内壁、与折环内壁相对且与连接部连接的折环外壁以及连接折环内壁与折环外壁的顶壁，位于圆角部上的折环外壁的厚度小于位于圆角部上的折环内壁的厚度，位于短轴边上的折环外壁的厚度小于位于短轴边上的折环内壁的厚度。本实用新型将振膜圆角处和短轴边处折环的厚度设计为外薄内厚，能够提升圆角和短轴边内侧的结构强度，改善振膜上下振动时内侧容易打折的问题，提高声学性能。
Description
本实用新型属于电声技术领域，尤其涉及一种振膜及扬声器。
随着科技的快速发展，音频设备也不断快速发展，人们对音频设备的功能性要求越来越高，对于扬声器，越来越多人对其音频性能提出了较高的要求。相关技术中，扬声器的振膜在不同位置处厚度相同，而同样厚度的振膜在不同位置处的结构强度并不同，满足不了实际产品在特定位置处所需要的强度，振膜上下振动时内侧容易出现打折，且容易摇摆，导致其性能出现不良。
本实用新型的目的在于提供一种振膜及扬声器，旨在改善振膜不同位置处的结构强度，满足振膜不同位置不同的强度需求，提升扬声器的产品性能。
本实用新型的技术方案如下：一种振膜，其包括位于中央位置的球顶、环绕设置在所述球顶外侧的折环部以及环绕设置在所述折环部外侧的连接部，所述折环部包括相对设置的两个长轴边、相对设置的两个短轴边以及连接相邻的所述长轴边和所述短轴边的圆角部，所述折环部包括靠近所述球顶的折环内壁、与所述折环内壁相对且与所述连接部连接的折环外壁以及连接所述折环内壁与所述折环外壁的顶壁，位于所述圆角部的所述折环外壁的厚度小于位于所述圆角部的所述折环内壁的厚度,位于所述短轴边的所述折环外壁的厚度小于位于所述短轴边的所述折环内壁的厚度。
进一步地，位于所述长轴边的所述折环外壁的厚度与位于所述长轴边的所述折环内壁的厚度相同。
进一步地，位于所述圆角部的所述折环内壁的厚度与位于所述长轴边的所述折环内壁的厚度相同，位于所述圆角部的所述折环外壁的厚度小于位于所述长轴边的所述折环外壁的厚度；和/或，位于所述短轴边的所述折环内壁的厚度与位于所述长轴边的所述折环内壁的厚度相同，位于所述短轴边的所述折环外壁的厚度小于位于所述长轴边的所述折环外壁的厚度。
进一步地，位于所述圆角部的所述折环内壁的厚度大于位于所述长轴边的所述折环内壁的厚度，位于所述圆角部的所述折环外壁的厚度与位于所述长轴边的所述折环外壁的厚度相同；和/或，位于所述短轴边的所述折环内壁的厚度大于位于所述长轴边的所述折环内壁的厚度，位于所述短轴边的所述折环外壁的厚度与位于所述长轴边的所述折环外壁的厚度相同。
进一步地，所述折环内壁与所述顶壁平滑过渡连接，所述折环外壁与所述顶壁平滑过渡连接，位于所述圆角部的所述顶壁的厚度自连接所述折环内壁的一端到连接所述折环外壁的一端逐渐减小，位于所述短轴边的所述顶壁的厚度自连接所述折环内壁的一端到连接所述折环外壁的一端逐渐减小。
进一步地，所述折环部和所述球顶为一体结构。
进一步地，所述振膜还包括位于所述折环部靠近所述球顶一侧并与所述折环部连接的固定部，所述固定部设有开口，所述球顶覆盖所述开口并与所述固定部固定连接。
进一步地，所述振膜材料为高分子材料。
进一步地，所述振膜材料为硅胶、橡胶、PEEK（Polyetheretherketone，聚醚醚酮）材料或TPU（Thermoplastic polyurethanes，热塑性聚氨酯弹性体橡胶）材料。
进一步地，提供一种扬声器，包括盆架、固定于所述盆架的振动系统和磁路系统，所述振动系统包括固定于所述盆架顶部的振膜，所述振膜为如上任意一种所述的振膜。
本实用新型的有益效果在于：本实用新型将振膜圆角处以及短轴边处折环的厚度设计为外薄内厚，能够显著提高圆角位置和短轴边位置振膜的刚度，提升圆角和短轴边内侧的结构强度，改善振膜上下振动时内侧容易打折的问题，并同步改善振动系统的平衡性及稳定性，平衡折环部短轴边强度不够的问题，改善产品纯音；并且由于只是局部改变振膜折环的厚度，不会过分改变振膜整体重量，保证共振频率、声压级等性能变化较小；不仅如此，还能抬高产品下振幅，抑制上振幅，同步优化上下振幅最高点左右偏移不对称的问题，改善产品摇摆，降低失真。
图1是本实用新型实施例提供的振膜的整体结构示意图；
图2是本实用新型实施例提供的扬声器的俯视结构示意图；
图3是本实用新型实施例提供的扬声器的分解结构示意图；
图4是图2的B-B方向剖切示意图；
图5是图2的A-A方向剖切示意图；
图6是图5中E部分的放大结构示意图；
图7是图2的C-C方向剖切示意图；
图8是图7中D部分的放大结构示意图。
下面结合附图和实施方式对本实用新型作进一步说明。
如图1所示，是本实用新型实施例提供的一种振膜21，该振膜21包括位于中央位置的球顶212、环绕设置在球顶212外侧的折环部211以及环绕设置在折环部211外侧的连接部213，折环部211包括相对设置的两个长轴边2111、相对设置的两个短轴边2112以及连接相邻的长轴边2111和短轴边2112的圆角部2113。
请进一步参阅图5至图8，折环部211包括靠近球顶212的折环内壁2115、与折环内壁2115相对且与连接部213连接的折环外壁2114以及连接折环内壁2115与折环外壁2114的顶壁2116，位于圆角部2113上的折环外壁2114的厚度（图8中示出的H1）小于位于圆角部2113的折环内壁2115的厚度（图8中示出的H2），位于短轴边2112上的折环外壁2114的厚度（图6中示出的H4）小于位于短轴边2112的折环内壁2115的厚度（图6中示出的H5）。也就是说，位于圆角部2113位置以及短轴边2112位置的折环部211厚度设计为外薄内厚，能够显著提高圆角部2113以及短轴边2112处振膜21的刚度，提升圆角部2113和短轴边2112内侧的结构强度，改善振膜21上下振动时内侧容易打折的问题，并同步改善振动系统20的平衡性及稳定性，平衡折环部211短轴边2112强度不够的问题，改善产品纯音。并且由于只是局部改变折环部211的厚度，不会过分改变振膜21整体的重量，保证共振频率、声压级等性能变化较小；不仅如此，还能抬高产品下振幅，抑制上振幅，同步优化上下振幅最高点左右偏移不对称的问题，改善产品摇摆，降低失真。
请进一步参阅图4，位于长轴边2111上的折环外壁2114的厚度与位于长轴边2111的折环内壁2115的厚度相同。本实施例只改变了折环部211位于圆角部2113以及短轴边2112处的厚度，长轴边2111上的厚度不变，因此不会过分改变振膜21整体的重量，共振频率、声压级等性能变化较小。
为了实现圆角部2113位置以及短轴边2112位置的折环部211厚度为外薄内厚，可以将位于圆角部2113的折环外壁2114相对长轴边2111的折环外壁2114减薄，使得其厚度小于长轴边2111的折环外壁2114的厚度，而位于圆角部2113的折环内壁2115的厚度与位于长轴边2111的折环内壁2115的厚度相同。同样地，可以将位于短轴边2112的折环外壁2114减薄，使得其厚度小于位于长轴边2111的折环外壁2114的厚度，而位于短轴边2112的折环内壁2115的厚度与位于长轴边2111的折环内壁2115的厚度相同。在本实施方式中，将位于圆角部2113的折环内壁2115加厚，使得其厚度大于位于长轴边2111的折环内壁2115的厚度，而位于圆角部2113的折环外壁2114的厚度与位于长轴边2111的折环外壁2114的厚度相同。同样地，将位于短轴边2112的折环内壁2115加厚，使得其厚度大于位于长轴边2111的折环内壁2115的厚度，而位于短轴边2112的折环外壁2114的厚度与位于长轴边2111的折环外壁2114的厚度相同。圆角部2113和短轴边2112分别通过折环外壁2114减薄或者折环内壁2115加厚实现折环内壁2115厚度比折环外壁2114厚度大的方式可以根据实际的需求进行选择。本实施例中，折环内壁2115与顶壁2116平滑过渡连接，折环外壁2114与顶壁2116平滑过渡连接，位于圆角部2113的顶壁2116的厚度（图8中示出的H3）自连接折环内壁2115的一端到连接折环外壁2114的一端逐渐减小，位于短轴边2112的顶壁2116的厚度（图6中示出的H6）自连接折环内壁2115的一端到连接折环外壁2114的一端逐渐减小。也就是说，圆角部2113上的折环外壁2114与圆角部2113上的折环内壁2115的厚度通过圆角部2113上的顶壁2116以渐变的方式过渡，短轴边2112的折环外壁2114的厚度与短轴边2112的折环内壁2115的厚度通过短轴边2112上的顶壁2116以渐变的方式过渡，而具体厚度尺寸的变化范围以及起始点位置等不做限定，可根据实际需求调整。
本实施例的振膜21还包括位于折环部211靠近球顶212一侧并与折环部211连接的固定部214，固定部214设有开口2141，球顶212覆盖开口2141并与固定部214固定连接。在其他实施方式中，折环部211和球顶212也可以是一体结构。本实施例的振膜21材料为高分子材料，具体的，可以为硅胶、橡胶、PEEK材料或TPU材料。
本实用新型实施例还提供一种扬声器，如图2和图3所示，该扬声器包括盆架10、固定于盆架10的振动系统20和磁路系统30，振动系统20包括固定于盆架10顶部的振膜21，振膜21为上述技术方案中的振膜21。振动系统20还包括连接于振膜21一侧并驱动振膜21振动的音圈22、连接在音圈22远离振膜21一端的弹性件23以及与振膜21相对应的两个下音膜24，盆架10与振膜21之间通过粘胶固定。具体的，弹性件23为柔性线路板，音圈22与弹性件23电连接，一方面可用于提供对音圈22的支撑，另一方面为音圈22引入外部电信号，避免了通过引线为音圈22引入外部电信号时容易断线的问题，提高其可靠性。本实施例的扬声器设有相对的两个弹性件23，双弹性件23的对称结构使得对音圈22的支撑效果更稳定，更好的防止音圈22的横向摆动，提高振动系统20振动的可靠性。
另外，磁路系统30则包括主磁钢31、位于主磁钢31相对两侧的副磁钢32以及贴设在主磁钢31上的极芯33，副磁钢32间隔设置在主磁钢31两侧，并与主磁钢31形成磁间隙，音圈22固定设置在磁间隙中，磁路系统30还包括用于固设主磁钢31和副磁钢32的磁轭35以及与磁轭35相对的导磁板36，导磁板36嵌设固定于盆架10上。主磁钢31与极芯33之间、主磁钢31与磁轭35之间、副磁钢32与磁轭35之间以及副磁钢32与导磁板36之间通过粘胶固定。贴附在主磁钢31和副磁钢32表面的极芯33以及导磁板36能够起到导磁作用，汇聚磁场，使磁路系统30的磁力线尽可能多的被音圈22切割，以形成更大的驱动力。
综上所述，本实用新型实施例的振膜21，其位于圆角部2113位置以及短轴边2112位置的折环部211厚度设计为外薄内厚，能够显著提高圆角部2113以及短轴边2112处振膜21的刚度，提升圆角部2113和短轴边2112内侧的结构强度，改善振膜21上下振动时内侧容易打折的问题，并同步改善振动系统20的平衡性及稳定性，平衡折环部211短轴边2112强度不够的问题，改善产品纯音。并且由于只是局部改变折环部211的厚度，不会过分改变振膜21整体的重量，保证共振频率、声压级等性能变化较小；不仅如此，还能抬高产品下振幅，抑制上振幅，同步优化上下振幅最高点左右偏移不对称的问题，改善产品摇摆，降低失真。
以上所述的仅是本实用新型的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本实用新型创造构思的前提下，还可以做出改进，但这些均属于本实用新型的保护范围。
Claims (10)
- 一种振膜，包括位于中央位置的球顶、环绕设置在所述球顶外侧的折环部以及环绕设置在所述折环部外侧的连接部，所述折环部包括相对设置的两个长轴边、相对设置的两个短轴边以及连接相邻的所述长轴边和所述短轴边的圆角部，其特征在于，所述折环部包括靠近所述球顶的折环内壁、与所述折环内壁相对且与所述连接部连接的折环外壁以及连接所述折环内壁与所述折环外壁的顶壁，位于所述圆角部的所述折环外壁的厚度小于位于所述圆角部的所述折环内壁的厚度,位于所述短轴边的所述折环外壁的厚度小于位于所述短轴边的所述折环内壁的厚度。
- 根据权利要求1所述的振膜，其特征在于，位于所述长轴边的所述折环外壁的厚度与位于所述长轴边的所述折环内壁的厚度相同。
- 根据权利要求2所述的振膜，其特征在于，位于所述圆角部的所述折环内壁的厚度与位于所述长轴边的所述折环内壁的厚度相同，位于所述圆角部的所述折环外壁的厚度小于位于所述长轴边的所述折环外壁的厚度；和/或，位于所述短轴边的所述折环内壁的厚度与位于所述长轴边的所述折环内壁的厚度相同，位于所述短轴边的所述折环外壁的厚度小于位于所述长轴边的所述折环外壁的厚度。
- 根据权利要求2所述的振膜，其特征在于，位于所述圆角部的所述折环内壁的厚度大于位于所述长轴边的所述折环内壁的厚度，位于所述圆角部的所述折环外壁的厚度与位于所述长轴边的所述折环外壁的厚度相同；和/或，位于所述短轴边的所述折环内壁的厚度大于位于所述长轴边的所述折环内壁的厚度，位于所述短轴边的所述折环外壁的厚度与位于所述长轴边的所述折环外壁的厚度相同。
- 根据权利要求1所述的振膜，其特征在于，所述折环内壁与所述顶壁平滑过渡连接，所述折环外壁与所述顶壁平滑过渡连接，位于所述圆角部的所述顶壁的厚度自连接所述折环内壁的一端到连接所述折环外壁的一端逐渐减小，位于所述短轴边的所述顶壁的厚度自连接所述折环内壁的一端到连接所述折环外壁的一端逐渐减小。
- 根据权利要求1所述的振膜，其特征在于，所述折环部和所述球顶为一体结构。
- 根据权利要求1所述的振膜，其特征在于，所述振膜还包括位于所述折环部靠近所述球顶一侧并与所述折环部连接的固定部，所述固定部设有开口，所述球顶覆盖所述开口并与所述固定部固定连接。
- 根据权利要求1所述的振膜，其特征在于，所述振膜材料为高分子材料。
- 根据权利要求8所述的振膜，其特征在于，所述振膜材料为硅胶、橡胶、PEEK材料或TPU材料。
- 一种扬声器，包括盆架、固定于所述盆架的振动系统和磁路系统，所述振动系统包括固定于所述盆架顶部的振膜，其特征在于，所述振膜为如权利要求1-9中任意一项所述的振膜。
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