CN100551133C - Bending wave acoustic radiator - Google Patents

Bending wave acoustic radiator Download PDF

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Publication number
CN100551133C
CN100551133C CN 02806868 CN02806868A CN100551133C CN 100551133 C CN100551133 C CN 100551133C CN 02806868 CN02806868 CN 02806868 CN 02806868 A CN02806868 A CN 02806868A CN 100551133 C CN100551133 C CN 100551133C
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China
Prior art keywords
sheet
sound
stiffening element
plate
bending wave
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CN 02806868
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Chinese (zh)
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CN1625918A (en
Inventor
亨利·阿齐马
朱利安·福德汉姆
查尔斯·布里姆
格雷厄姆·班克
马丁·科洛姆斯
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新型转换器有限公司
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Priority to GB0107314A priority Critical patent/GB0107314D0/en
Priority to GB0107314.7 priority
Priority to GB0130469.0 priority
Priority to GB0130469A priority patent/GB0130469D0/en
Application filed by 新型转换器有限公司 filed Critical 新型转换器有限公司
Publication of CN1625918A publication Critical patent/CN1625918A/en
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Publication of CN100551133C publication Critical patent/CN100551133C/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00Diaphragms for electromechanical transducers; Cones
    • H04R7/02Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04Plane diaphragms
    • H04R7/045Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/029Diaphragms comprising fibres

Abstract

一种弯曲波平板形声音辐射器,其由薄片材料形成,以限定一个声音主动区域,并包括至少一个皱折形式的整体的硬化元件,该硬化元件延伸到薄片的平面之外,并至少局部跨过辐射器的声音主动区域,该硬化元件基本为U形横截面。 Of bending a plate-shaped sound wave radiator, which is formed from sheet material to define a sound active region, and includes at least one crease in the form of integral stiffening element, the stiffening element extends out of the plane of the sheet, and at least partially across the active region of the sound radiator, the stiffening element is substantially U-shaped cross-section. 一种制造弯曲波平板形声音辐射器的方法,包括将薄片形成为面板,该面板具有至少一个整体的皱折元件,该皱折元件延伸到薄片的平面之外,并且至少局部跨过薄片,且大致为U形横截面,以便将薄片硬化成具有可以支撑和传播弯曲波的理想能力。 A method of bending wave radiator plate-shaped sound manufacture, comprising a sheet formed into a panel having at least one integral element corrugations, the corrugations element extending out of the plane of the sheet, and at least partially across the sheet, and a substantially U-shaped cross-section, in order to harden into a sheet having a support and able to spread over the bending waves.

Description

弯曲波声音辐射器 Sound bending wave radiator

技术领域 FIELD

本发明涉及一种弯曲波声音辐射器,该声音辐射器例如用在新转换器 The present invention relates to a bending wave sound radiator, for example radiator of the sound transducer in a new

有P艮公司(New Transducers Limited)的申请WO97/09842中所描述的那种扬声器中。 P-Gen Company (New Transducers Limited) speaker in that application WO97 / 09842 as described in.

背景技术 Background technique

公知的是平面薄片或板可以例如通过使该薄片皱軒或通过将一图案模制或压入薄片或板中来得以加强,见S. R Carrington的GB2336566A,该专利表明包含两个或多个概念轴(conceptual axes)的复杂皱折可以增大薄片的弯曲硬度。 Is well known that planar sheet or plate for example, by making the sheet by a wrinkle or a pattern Hin molded or pressed into the sheet or plate to be enhanced, see S. R Carrington in GB2336566A, the patent indicates that comprises two or more complex corrugations concept shaft (conceptual axes) may increase the bending stiffness of the sheet.

目前,弯曲波平板形声音辐射器通常由如下的复合材料制成,该复合材料包括夹在表面层之间的芯部,尽管这种辐射器可以是例如塑料、金属或纸板的整体块状结构。 At present, plate-shaped sound bending wave radiators is typically made of composite material as the composite material comprises a core portion sandwiched between the surface layer, though this may be a radiation block structure, for example, the entire plastic, metal or cardboard .

另外,从新转换器有P艮公司的WOOO/15000可以得知硬化平板形声音辐射器,以便它的弯曲硬度在其区域上有所变化。 Further, the new converter with a P-Gen Company WOOO / 15000 may be that the sound radiation hardened flat plate shape so that it varies the bending stiffness in its area.

从新转换器有P艮公司的WO00/65869中也可以得知,使扬声器的弯曲波面板中的位于移动线圈振动转换器的音圈的接触环之内的部分成碟形, 该移动线圈振动转换器安装在面板上,以便为面板提供局部硬度,从而控制孔隙共振(aperture resonance)。 New converter has the P Gen's WO00 / 65869 may be that the portion of the disk into contact with the inner ring bending wave panel speaker at the moving coil vibration transducer voice coil of the moving coil vibration transducer is mounted on the panel, the panel in order to provide local stiffness to control the resonance apertures (aperture resonance).

发明内容 SUMMARY

本发明的目的是提供一种简单并相对廉价的弯曲波平板形声音辐射器。 Object of the present invention is to provide a simple and relatively cheap bending wave radiator plate-shaped sound.

从一个方面,本发明为一种弯曲波平板形声音辐射器,该声音辐射器由薄片材料形成,以限定一个声音主动区域,并包括至少一个皱折形式的整体的硬化元件,该硬化元件延伸到薄片的平面之外,并至少局部跨过辐射器的声音主动区域,该硬化元件基本为U形横截面。 Viewed from one aspect, the present invention is a bending wave radiator plate-shaped sound, the sound radiated from the sheet material formed to define a sound active region, and includes at least one crease in the form of integral stiffening element, the stiffening element extending out of the plane of the sheet, and at least partially across the active area of ​​the sound radiator, the stiffening element is substantially U-shaped cross-section.

5薄片在声音主动区域上基本是均匀厚度,该厚度在整体形成硬化元件所施加的限制之内。 5 sheet acoustically active area is substantially uniform thickness, the thickness of the stiffening element is formed within the constraints imposed on the overall.

弯曲波平板形声音辐射器可以包括布置成在跨过声音主动区域的多个方向上延伸的硬化元件。 Plate-shaped sound bending wave radiator may comprise stiffening element arranged to extend in a direction across a plurality of active regions sounds.

弯曲波平板形声音辐射器可以包括布置成平行阵列的硬化元件。 Plate-shaped sound bending wave radiator may comprise stiffening element arranged in parallel array.

硬化元件可以基本完全跨过声音主动区域延伸。 Stiffening element may be substantially fully across the active region extends sound.

声音主动区域可以基本上填充以紧密间隔的硬化元件。 Sound active region may be substantially filled with hardened closely spaced elements.

硬化元件可以是直线形的。 Stiffening element may be rectilinear.

硬化元件可以大致设置成径向阵列,该径向阵列从声音主动区域上要定位振动激励器的位置处延伸。 Stiffening element array may be arranged substantially radially extending from the array at a location radially acoustically active area to target the vibration exciter. 薄片的声音主动区域中的大致平面的部分可以限定在基本沿径向的硬化元件之间。 A substantially planar sheet portion sound active region may be defined between a substantially radial stiffening element.

硬化元件在其长度上可以为基本均匀的横截面。 Stiffening element over its length may be a substantially uniform cross-section.

声音主动区域可以大致是矩形,并且硬化元件可以与声音主动区域的边缘成角度地延伸。 Sound active region may be generally rectangular, and the stiffening element may extend to the edge region of the active sound angularly.

硬化元件可以是环形的,或者可以是离散的。 Stiffening element may be annular, or may be discrete. 硬化元件可以包括它们的长度在不同方向上延伸的各部分。 Hardening element may comprise portions of their length extending in different directions. 硬化元件可以成形为横截面倒圆,以避免锋利的边缘。 Hardening element may be shaped as a rounded cross section to avoid sharp edges. 薄片材料可以为可塑性变形的材料。 The sheet material may be a plastically deformable material.

薄片可以包括至少局部围绕声音主动区域的终端区域。 Sheet may include a terminal region of at least partially surrounds the active region of the sound.

声音辐射器可以由薄片构成。 Sound radiator may be constituted by a sheet. 弯曲波平板形声音辐射器可以由多个皱折的薄片构成。 Plate-shaped sound bending wave radiator sheet may be constituted by a plurality of corrugations. 多个薄片可以面对面地结合。 Binding a plurality of sheets face to face. 在一个薄片上的皱折可以相对于在相邻薄片上的相邻铍折成角度。 Creases on a sheet can be folded into an angle with respect to an adjacent beryllium in the adjacent sheet.

该硬化元件或每个硬化元件在其长度上高度可以基本均匀一致。 The stiffening element, or each stiffening element may coincide substantially uniform height over its length.

从另一方面,本发明是一种扬声器,该扬声器包括弯曲波平板形声音辐射器和偶合到面板的声音主动区域上的振动转换器。 From another aspect, the present invention is a loudspeaker, the loudspeaker comprising a bending wave radiator and the plate-shaped sound vibration transducer coupled to the sound panel active area.

面板可以为热成形的塑料。 Panel may be thermoformed plastic. 振动转换器可以安装到面板的一侧上,塑料在该侧上移动,以便形成硬化元件。 Vibration transducer may be mounted to the side of the panel, which side moves in the plastic, to form a stiffening element.

从再一方面,本发明是一种制造弯曲波平板形声音辐射器的方法,其 From another aspect, the present invention is a method of plate-shaped sound radiator producing bending waves which

包括:将薄片形成为面板,该面板具有至少一个整体的皱折元件,该皱折元件延伸到薄片的平面之外,并且至少局部跨过薄片,且大致为U形横截面,以便将薄片硬化成具有可以支撑和传播弯曲波的理想能力。 Comprising: a sheet is formed into a panel having at least one integral element corrugations, the corrugations element extending out of the plane of the sheet, and at least partially across the sheet, and a generally U-shaped cross-section, so as to harden the sheet to have the ability to support and spread over the bending waves.

6该方法可以包括布置至少一个硬化元件,以便硬化薄片,来支持在面板中驻波的理想频率分布。 6 The method may comprise arranging at least one stiffening element, to harden the sheet, the ideal frequency to support the standing wave distribution in the panel.

该方法可以包括将薄片形成为具有一个或多个边缘或其他部分,用来将声音辐射器连接到或支持在框架或其他支撑装置上。 The method may include forming a sheet to one or more edges or other portions having, for connecting the radiator to the sound or support frame or other support means.

该方法可以包括形成边缘或其他连接部分,以提供弹性悬挂。 The method may include forming an edge or other connecting portion to provide a resilient suspension.

该方法可以包括形成边缘或其他部分,以提供如下的装置,通过该装置可以基本上约束薄片的声音主动区域。 The method may include forming an edge or other portion to provide the following apparatus, the apparatus may be substantially constrained by the active region of the sheet of sound.

该方法可以包括选择硬化元件的布置方式,以便减小或限定在薄片的 The method may include selecting a stiffening element arrangement, in order to reduce or restrict the sheet

声音主动区域内的弯曲弱化的线(line of bending weakness)的平均自由行程。 Curved line of weakness in the region of the active voice (line of bending weakness) mean free path.

这方面开展的程度取决于所获得的面板的所需特性以及诸如所需的频率范 Desired characteristics of the panel depends on the degree undertaken in this area as well as obtained the required frequency range

围之类的各方面。 All aspects surrounding the like.

该方法可以包括结合叠置的一对皱折薄片。 The method may include a combination of one pair of stacked sheet corrugations. 叠置的薄片可以通过焊接结合。 The stacked sheets may be bonded by welding. 焊接可以包括向薄片上待焊接的表面涂覆热塑性材料,该热塑性材料具有低于薄片的材料的熔点;将薄片面对面形成接触,并加热薄片,以熔化涂层,以便将薄片熔接到一起。 The welding may include a thermoplastic material is applied to a surface to be welded on the sheet, the thermoplastic material having a melting point lower than the material of the sheet; the sheet forming the contact face, and the sheet is heated to melt the coating to the sheet to fusing together.

该方法可以包括将该对薄片中的一个上的皱折布置成相对于该对薄片中另一个上的铍^f成角度。 The method may include the pair of creases on a sheet is arranged on the other of the pair of sheet beryllium ^ f is angled with respect to.

该方法可以包括制造由薄片或多个,即,两个或更多薄片构成的声音辐射器。 The method for producing a sheet or may comprise a plurality of, i.e., two or more sound radiators sheet configuration.

从而,通过热成形或任何其他适当的工艺,薄片材料可以转变为具有有益的质量硬度比的弯曲波平板声音辐射器。 Thus, by thermoforming or any other suitable process, it can be converted into sheet material having a flexural wave sound radiator plate useful mass ratio of hardness. 这种面板可以支持弯曲波共鸣,并可以用于包括扬声器在内的分布模式不同的各种音响装置。 This panel may support bending wave resonance, and may be used for different distribution modes including various acoustic devices including loudspeakers.

将薄片形成为面板可以包括平面的边缘部分、衬垫或带条,以便于例如通过弹性短柱安装到入框架的接地结构上,或者用来粘性连接到接地结 The sheet is formed as a panel may include a planar edge portion, the gasket or strip, for mounting to the ground through resilient studs into the frame structure of, for example, connected to ground or to tack junction

构上。 The configuration. 遵循对于在音响面板中弯曲波共鸣模式的有益分布的分布模式教导, 由硬化元件的给定形式带来的弯曲硬度具有多重方向特性,它们可以在相对对齐和大小方面加以调整,以便达到所选择的模态频率分布(modal frequency distribution)。 For advantageous distribution pattern follows the profile of the panel in bending wave acoustic resonance mode teachings, having multiple directional characteristics caused by a given form of bending stiffness of the stiffening element, which can be adjusted in relative alignment and size, so as to achieve the selected modal frequency distribution (modal frequency distribution).

可以在宏观元上进行计算机分析,来检验整个面板的特性,例如,在匹配面板纵横比方面,同时,微观建模可以检验硬化元件图案的从属部分, 以便探索局部硬度和适当的驱动点与面板的振动转换器的关系。 May be performed on macro-element computer analysis to examine the characteristics of the entire panel, for example, in terms of matching the aspect ratio of the panel, at the same time, microscopic inspection modeling may partially hardened slave device pattern, and appropriate hardness in order to explore the local driving point to the panel relationship between the vibration transducer. 对于给定的面板尺寸,可以按比例缩放或者确定给定硬化元件图案的尺寸。 For a given panel size, or may be scaled to the size of the element pattern determines a given hardening. 以便改变面板的特性。 In order to change the characteristics of the panel. 例如,面板的纵的图象可以缩放,或另外可以在其应用到可成形或可才莫制的薄片方面降低。 For example, a vertical panel image can be scaled, or otherwise may be reduced in terms of its application to a sheet formed or Mo was made. 在相关的上下文中,硬化元件可以基于分形图形,该图形与有限截断或其他无限循环序列类似。 In a related context, the stiffening element may be based on fractal pattern that truncation, or other finite infinite loop sequence similarity. 不同的分形算法为平均路径长度和方向硬度的变化提供了有益的设计。 Different fractal algorithm is designed to provide a useful average path length and hardness changes direction. 另夕卜, 硬化元件图案的组合可以分布在面板区域上,以提供广泛的或局部化的弯曲硬度。 Another Bu Xi, the combination pattern of the stiffening element may be distributed on the panel region to provide a range of bending stiffness or localized. 这个有价值的特性可以用来平衡或均衡频率范围和频率响应,以对于沿选定轴的方向性会改变的不同区域改变声音功率与频率的关系。 This value can be used to balance or equalization characteristic frequency range and frequency response to the directional change for different regions along the selected axis to change the relationship of sound power with frequency. and also

可以混合或平滑在临界频率处产生的声音伪缺陷(artefacts),在临界频率处, 面板中的波速是空气中声音速度的一倍或多倍。 Smooth or may be mixed at the critical frequency generated sound false defects (Artefacts), the critical frequency, the panel velocity is one or a multiple of the speed of sound in air.

从一个观点,硬化元件图案可以被看作与公知的弯曲波面板的连续性相比更离散的弹簧和质量序列。 From a point of view, the stiffening element pattern may be considered as a spring and mass compared with the continuity of the sequence more discrete known bending wave panels. 在设计弯曲波面板构造的离散特性过程中, 使其能经受弯曲中的复杂面板特性的微观结构的考验,给设计者提供微调各个区域的性能以及所需特性的组合的自由度。 In the discrete nature of the process of designing the wave flex panel configuration so that it can withstand the test of the complex microstructure of the curved panel characteristics, the designer provides the performance of each trimming area and the desired degree of freedom in the combination of characteristics. 在一方面,弯曲波面板由密度足够大的可定义的指定元件合成,使得该面板大致等效于均匀面板结构。 In one aspect, the bending wave panel synthesized density sufficiently definable specified element, so that the panel is substantially equivalent to a uniform panel structure. 该面板本身承受简单或复杂的弯曲,并且可以包括整体的音响负载。 The panel itself is subjected to simple bending or complex, and may include integral audio load.

无论材料是透明的与否,硬化元件图案也可以装饰性地用作例如一紋理,或者提供所选择的半透明。 Whether or not the material is transparent, the stiffening element may be a decorative pattern, for example, be used as a texture, or to provide a translucent selected. 即使在半透明状态下,整体的光透射率可以较高。 Even in the semi-transparent state, the entire light transmittance may be high. 从而,本发明的面板可以适用于结合声光系统的光漫射器,在这种情况下,音响面板也是漫射器。 Thus, the panel of the present invention can be applied to the acousto-optical system in conjunction with a light diffuser, in this case, the acoustic panels are also diffuser. 声音上导向的硬化元件图案可以与菲涅耳透镜相结合,该菲涅耳透镜等效构图,以便与声音面板的工作相结合附加地给出受引导的照明。 Guide the stiffening element sound pattern may be combined with the Fresnel lens, the Fresnel lens equivalent patterned to work in combination with the sound panel gives additional illumination guided.

在由通常为U性横截面所赋予的约束中,硬化元件皱折的侧壁可以近似为竖直或倾斜的,或者被赋予所需形状,例如正弦曲线形状,以便改变平面区域或平台区域以及侧壁部分之间的应力应变关系。 In constrained by the cross-section of generally U imparted, the corrugations of the side wall stiffening element may be approximately vertical or inclined, or is given the desired shape, such as sinusoidal shape, in order to change or platform region and a planar region stress-strain relationship between the side wall portion. 有可能在面板的区域上和/或在硬化元件的长度上,深度和侧壁轮廓发生变化。 Possible / or stiffening element over the length, depth and sidewall profile varies over the area of ​​the panel and.

硬化元件图案范围可以为螺旋、环形的同心环对角偏移的组或阵列, 或者环形的正交子集(rectangularsubset),或平行的直线。 Stiffening element may be a spiral pattern range, group or array of annular concentric rings diagonally offset or annular orthogonal subset (rectangularsubset), or parallel straight lines. 对薄片中间平面的规则图案可以由对薄片中间平面的另一侧偏移的图案改变,从而打破相对于面板的横向弯曲轴的轴对称。 The median plane of the sheet in a regular pattern may be a pattern of changing the offset by the other sheet side of the intermediate plane, thus breaking the shaft relative to the transverse bending axis of symmetry of the panel. 可以应用各种数学重复函数,包括针对硬化元件的分形形式。 Repetition may be applied mathematical functions, including fractal form for hardening element.

8由于设计过程的多样化,可以用不寻常或不可预料的形状,例如,为了装饰扬声器的鱼、鸟、动物或工艺品的自然形式,形成对有益的分布模式工作,例如近似接近最佳分布模式的教导。 8 because of the diversification of the design process, it may be unusual or unpredictable shape, e.g., natural form for fish, birds, animals, or decorative arts and crafts speaker forming operation beneficial distribution pattern, for example, approximately near optimum distribution pattern teachings.

附图说明 BRIEF DESCRIPTION

借助示例,本发明在附图中示意性示出,图中: By way of example, the present invention is schematically shown in the drawings, the drawings:

图l是平板形弯曲波扬声器的平面图; Figure l is a plan view of a plate-shaped bending wave loudspeaker;

图2是在图1的线AA上的局部横截面图; FIG 2 is a partial cross-sectional view on the line AA of Figure 1;

图3是在图1的线BB上的局部横截面图; FIG. 3 is a partial cross-sectional view on the line BB of Figure 1;

图4是在图1的线CC上的局部横截面图; FIG 4 is a partial cross-sectional view on line CC of Figure 1;

图5是图l到4所示种类的扬声器的频率响应曲线; FIG 5 is a diagram of the kind shown in FIG l to 4 frequency response curve of the loudspeaker;

图6是音响隔膜的另一实施例的平面图; FIG 6 is a plan view of another embodiment of the acoustic diaphragm;

图7是利用图6的音响隔膜的扬声器的频率相应曲线; FIG 7 FIG. 6 using the acoustic diaphragm loudspeaker frequency response curve;

图8到ll是音响隔膜的再一实施例的平面图; 8 to ll is a plan view of another embodiment of the acoustic diaphragm;

图12是音响隔膜的再一实施例的透视图; 12 is a perspective view of another embodiment of the acoustic diaphragm;

图13是音响隔膜的又一实施例的平面图; FIG 13 is a plan view of yet another embodiment of the acoustic diaphragm;

图14是在图13的线X - X上的局部横截面图; FIG 14 is a diagram of 13 X - is a partial cross-sectional view on X-;

图15是类似于图4的穿过弯曲波平板形扬声器的另一实施例的横截面 FIG 15 is a cross section of another 4 through bending wave plate type speaker embodiment similar to FIG.

图; Figure;

图16是示出工程模拟的音响隔膜的平面图; FIG 16 is a diagram illustrating an analog sound engineering a plan view of the separator;

图17是音响隔膜再一实施例的平面图; FIG 17 is a plan view of another embodiment of the acoustic diaphragm to an embodiment;

图18是在图17的线EE上的局部横截面图; FIG 18 is a partial cross-sectional view on line EE of FIG 17;

图19是音响隔膜的另一实施例的平面图; FIG 19 is a plan view of another embodiment of the acoustic diaphragm;

图20是在图19的箭头A方向取得的图19的隔膜的侧视图; FIG 20 is a side view of the separator taken in a direction of arrow A of FIG 19 FIG 19;

图21是在图19的箭头B方向上取得的图19的隔膜的侧视图; FIG 21 is a side view of the separator taken in the direction of arrow B in FIG. 19, FIG. 19;

图22a、 b和c是对应于图21的侧视图,并示出图19中的隔膜的各层固定到一起的各种不同形式;以及 FIG. 22a, b and c is a side view corresponding to FIG. 21, and shows the various forms of membrane layers 19 secured together; and

图23是采用如图19所示的隔膜的扬声器的声音功率输出相对于频率的曲线。 FIG 23 is a sound power output of the speaker diaphragm shown in FIG. 19 versus frequency.

具体实施方式 Detailed ways

9在附图的图l到5中,示出了扬声器l,其具有矩形弯曲波平板形声音辐射器或隔膜2,隔膜2在其周边5安装到中密度纤维板(MDF)的环绕矩形框架3中。 Around the rectangular frame 9 of the drawings in FIG. L to 5, there is shown a speaker l, having a rectangular plate-shaped bending wave or sound radiator diaphragm 2, the diaphragm 2 is mounted to medium density fiberboard (MDF) at its periphery 3 of 5 in. 如图4所示,隔膜的周边4通过双面胶带5固定到框架上, 从而限定了一个由固定部分5围绕的声音主动区域13。 4, the periphery of the diaphragm 4 by a double-sided adhesive tape 5 is fixed to the frame, thereby defining a sound active region surrounded by the fixed portion 513. 内部移动线圏弯曲波激励器6经由耦合器环8、例如在粘结剂装置的辅助下在隔膜的大致中心位置7耦合到隔膜上。 Inner rings of wire bending wave moving actuator 6 via the coupling ring 8, for example, is coupled to the diaphragm 7 at a substantially central position of the diaphragm with the aid of an adhesive means. 从而在电信号施加到激励器上时,激励器可以将弯曲波能量施加到隔膜上而导致隔膜振动,例如,如在WO97/09842中所教导的,由此隔膜作为分布模式装置共振。 Whereby when an electrical signal is applied to the actuator, the actuator may be bending wave energy is applied to the diaphragm caused by vibration of the diaphragm, e.g., as in WO97 / 09842 as taught, whereby the diaphragm resonance apparatus as a distribution pattern.

隔膜由平面的塑料薄片热成形,从而具有一列大致U形横截面的直线形皱折9,该皱折9从大致中心激励器位置辐射到隔膜的周边4。 A diaphragm molded from a plastic sheet of the thermal plane, so as to have a substantially U-shaped peripheral cross section 4 rectilinear corrugations 9, the corrugations 9 radiating from the substantially central position of the diaphragm actuator. 每个皱折的深度和轮廓在其长度上恒定。 Each corrugation depth and a constant profile over its length. 如图所示,具有十六个铍折,它们从激励器位置以22.5。 As shown, having sixteen fold beryllium, 22.5 to them from the excitation location. 的相互角度布置。 Arranged at an angle to each other. 铍折9的径向阵列在它们之间限定了隔膜的大致平面的三角形区域10。 Beryllium off in a radial array 9 define between them a substantially triangular region 10 of the diaphragm plane.

应指出的是,皱折9的内端11 (这是皱折处于耦合器环内侧的部分) 延伸并连接,而形成一个紧密间隔的皱折9平行阵列12,从而为隔膜在耦合器环8内侧的部分提供附加硬度。 It should be noted that the inner end 11 of the corrugations 9 (in the crease portion which is inside the ring coupler) extended and connected to form creases in a closely spaced parallel array 12 9, whereby a diaphragm coupler ring 8 the inner portion to provide additional stiffness. 耦合器环以在复合面板芯部上的表层的方式有效地起作用,并在X和Y方向上局部硬化面板。 Coupler rings on the surface of the composite panel core way function effectively, and the X and Y directions locally stiffened panel. 这导致低硬度的面板在驱动位置处呈现出较高的弯曲硬度,这在由小面板尺寸实现良好的低频和高频输出上是有益的。 This results in a low hardness at the panel driving position presented a higher bending stiffness, which is good on low and high frequency output is advantageous in achieving a small-size panel.

图5是根据图1到4的扬声器的声压等级相对于频率的曲线,该扬声器带有一隔膜,该隔膜具有120mmx80mm尺寸的主动区域,并且整个薄片尺寸为130mmx90mm。 FIG 5 is a graph of relative frequency, the loudspeaker having a sound pressure level of the speaker diaphragm according to Figure 1 to 4, the membrane has an active area 120mmx80mm size, and the size of the entire sheet 130mmx90mm. 该测量是在后部开启、无遮挡条件下的自由空间中、在轴上0.5m处85dB/W下进行的。 The measurement is open at the rear, an unobstructed free space under the condition, at the lower 85dB / W carried on the shaft 0.5m. 隔膜由400nm厚度的黑色聚丙烯共聚物薄片真空形成。 A separator formed of a black polypropylene copolymers sheet thickness 400nm in vacuo. 该框架具有150mmx llOmm的整体尺寸,限定了120mm x80mm的孔隙。 The frame has overall dimensions 150mmx llOmm defining pores of 120mm x80mm. 面板朝向框架的终端由围绕整个框架的5mm宽的双面压敏胶带提供。 Panels toward the frame provided by a terminal strip 5mm wide double-sided pressure around the entire frame. 激励器向隔膜上的粘结是借助于丙烯腈粘结剂,并且它在隔膜上的位置是在九分之四Lx、七分之三Ly位置处,如在W097/09842中所教导的。 The actuator on the diaphragm by means of adhesive binders of acrylonitrile, and its location on the membrane is ninety-four Lx of points, the three sevenths Ly position, as described in W097 / 09842 are taught.

在图6中,示出了例如用于平板形弯曲波扬声器的音响隔膜22的另一形式,该隔膜与图1到4所示的隔膜22为大致相同类型。 In FIG. 6, shows another form of a plate-shaped acoustic diaphragm e.g. bending wave loudspeaker 22, the diaphragm of the diaphragm shown in FIGS. 1-4 and 22 is substantially the same type. 如图6所示,隔膜22是一薄片,其用正弦曲线横截面的倾斜直线形皱折24的平行阵列23硬化,这极大地增加了隔膜在垂至于皱折的方向上的弯曲硬度,并且隔膜 6, the diaphragm 22 is a thin sheet, the cross section of the inclined rectilinear parallel corrugations 24 of the array 23 with sinusoidal hardened, which greatly increases the bending stiffness of the diaphragm in the vertical direction as to wrinkle, and septum

由边缘或周边部分4围绕。 A peripheral portion around the edge or 4.

作为图6的实施例的示例,制造200mmx60mm的面板。 As an example of the embodiment of FIG. 6, panel manufacturing 200mmx60mm. 该面板由400jim厚的聚丙烯共聚物薄膜真空成形而制造。 The panel is composed of a polypropylene copolymer film thickness 400jim vacuum molding manufacturing. 在这种情况下,皱折图案由具有正弦横截面的直的皱折构成。 In this case, a pattern of straight corrugations have a sinusoidal cross section corrugations. 这些皱折相对于面板的Lx轴定向于10°,以实现对于面板纵橫比的近乎最佳模态填充(modal fill)。 These corrugations axis Lx with respect to the panel is oriented 10 °, to achieve a near optimal modality for the aspect ratio of the filler panel (modal fill). 隔膜利用传统真空成形技术由一件工具制造。 Diaphragm using conventional technology manufactured by a vacuum forming tool.

根据在WO 97/09842中的教导,音响性能通过将4欧姆25mm直径的电^f兹驱动马达或激励器(Tianle0998-04)粘结剂粘结在一位置(89mmLx, 85ramLy)处来确定。 In accordance with the teachings of WO 97/09842, the electric acoustic performance 25mm diameter by 4 ohms ^ f hereby drive motor or actuator (Tianle0998-04) to determine the adhesive bonding in a position (89mmLx, 85ramLy) at. 面板利用压敏粘结剂安装到刚性的、背面开口的画框(245mmx lOOmm)上,以便提供一个约束边缘的终端,且没有单独的悬挂。 Panel using pressure sensitive adhesive attached to the rigid frame (245mmx lOOmm) on the back surface of the opening so as to provide a binding edge of the terminal, and no separate suspension. 扬声器的音响性能(在轴上0.5m处、驱动电压2.83V情况下测量)示于图7中,这个图表明可以以较小的面板区域实现良好的低频和高频延展, 且具有良好的模态填充。 Acoustic performance of the loudspeaker (0.5m in the shaft, the case of measuring a driving voltage of 2.83V) is shown in FIG. 7, this figure shows possible to achieve good low and high frequency extension with a smaller panel area, and have good mold filled state. 在这种情况下,以120cn^的面板面积实现180Hz 到18kHz的带宽(指定在-6dB截至点处的带宽)。 In this case, the panel area to achieve 120cn ^ 180Hz to 18kHz bandwidth (the bandwidth at a specified point as at the -6dB). 这也表明用这种类型的面板可以实现良好的声音输出,而不需要单独的柔性悬挂(compliant suspension)。 This also shows that this type of panel with good sound output can be achieved without the need for a separate flexible suspension (compliant suspension).

图8到11示出根据本发明制造的在音响隔膜上的皱折的另一种可能的图案。 8 through 11 illustrate another possible pattern according to the present invention for producing corrugations on the acoustic diaphragm. 图8示出具有离散皱折32图案的音响隔膜或辐射器31,该皱折大致倾斜地跨过辐射器延伸,每个皱折由一组互联的平行正弦曲线构成。 Figure 8 shows the acoustic diaphragm or radiator 32 having a discrete pattern of corrugations 31, the corrugations substantially extend diagonally across the radiators, each sinusoidal corrugations constituted by a set of parallel interconnected. 图9 到11示出具有另一种皱折图案的音响隔膜或辐射器(分别为41、 52、 61), 它们由从辐射器一端延伸到另一端的正弦曲线构成。 9 to 11 shows a membrane or acoustic radiator having another pattern of corrugations (respectively 41, 52, 61), which extends from the radiator constituting one end to the other end by a sine curve.

图12是音响隔膜71的另一实施例的透视图,该隔膜大致与图6中的类似,但是其中缺折72平行于矩形薄片的短边缘,并且紧密间隔,从一个长边到另一长边完全跨过薄片延伸。 12 is a perspective view of another embodiment of the acoustic diaphragm 71 of the embodiment, the membrane is substantially similar to those in FIG. 6, but where the missing fold 72 parallel to the short edges of the rectangular sheet, and closely spaced from one long side to the other long edges extending fully across the sheet. 皱折的横截面大致为方形。 Corrugations substantially square cross section.

图13是另一可能的音响隔膜81的平面图,该音响隔膜具有为Z字形形式并为大致方形横截面的皱折82图案,如图14所示。 FIG 13 is a plan view of another possible acoustic diaphragm 81, the acoustic diaphragm having a Z-shaped cross-section in the form of corrugations and substantially square pattern 82, as shown in FIG. 图13示出皱折在薄片上的两种可能布置方式,即,平行于薄片的长边延伸或相对于薄片的 13 illustrates creases on the sheet in two possible arrangements, i.e., parallel to the longitudinal extension of the sheet relative to the sheet or

长边成角度e。 The longitudinal angled e.

图15是穿过大致为图4所示类型的弯曲波平板形扬声器90的横截面图,该扬声器形成有皱折92,且其中形成音响隔膜91的热成形薄片设置有边缘部分93,该边缘部分形成弹性悬挂,由此隔膜91被支撑在框架94上。 FIG 15 is a cross-sectional view through substantially the type shown in FIG bending wave plate type speaker 90, the speaker 92 is formed with a crease, and wherein the acoustic diaphragm 91 is formed thermally molded sheet 93 is provided with an edge portion, the edge elastic suspension part is formed, whereby the diaphragm 91 is supported on the frame 94. 在这种情况下,隔膜与背板95 —起形成封闭的空腔96。 In this case, the diaphragm and the backplate 95-- 96 is formed from a closed cavity.

图16是用于弯曲波平板形声音辐射器的薄片101的视图,该图中一部分102被放大,以示出薄片的离散区域,例如宏观或微观区域是如何可以通过将这些区域认为是形成为一系列由弹簧104连接的质量103来加以分析的。 FIG 16 is a view of a sheet 101 for bending wave radiator plate-shaped sound, the drawing portion 102 is enlarged to show the discrete areas of the sheet, for example, microscopic or macroscopic regions of how these areas can be considered to be formed connected by a series of spring 104 of the mass 103 to be analyzed. 振动激励器位置由105标识。 Vibration actuator 105 identified by the location.

参照图17和18,图中示出了用于例如图4所示类型的扬声器的平板形弯曲波音响隔膜或辐射器122,并且其中该辐射器由两个重叠的热成形皱折的薄片123、 124构成,该薄片例如是图6和图8到14中所示的类型,两个薄片例如借助于粘结剂或通过焊接面对面粘结到一起。 Referring to FIGS. 17 and 18, there is shown a plate-shaped, for example, the type shown in FIG bending wave speaker sound radiator or diaphragm 122, and wherein the heat radiator is composed of two overlapping sheets forming corrugations 123 , 124 constituting the sheet, for example of the type shown in FIGS. 6 and 8 to 14, two sheets face to face, for example by means of adhesive or by welding, bonded together. 在薄片是聚丙烯的情况下,要连接的面涂覆有比薄片的聚丙烯熔点低的热塑性材料,从而该涂层可以熔化而将两个薄片结合,而不会熔化薄片本身。 In the case of a polypropylene sheet, the surface to be coated is connected with a lower melting point than polypropylene sheet of thermoplastic material, whereby the coating may be melted to bind the two sheets, without melting the sheet itself.

如图所示,在两个薄片123、 124上的皱折为直线形的,并大致为方形横截面,倾斜地跨过薄片延伸。 As shown, the two sheets 123, the corrugations 124 is rectilinear and substantially square cross-section, extending diagonally across the sheet. 皱折在薄片上的角度设置成有所不同,并且在所示的示例中,皱折的间距也不同。 Wrinkles on the sheet to be disposed at an angle different, and in the example shown, the pitch of corrugations is different.

在图19到23中,示出了大致为图17和18所示类型的弯曲波音响隔膜131的实施例,也就是说,该音响隔膜131包括多个板层或层,在本实施例中为两个大致矩形的热成形的皱折薄片或层132、 133,这两个层彼此相同,除了一层132沿着薄片以皱折平行于薄片的长边起皱,而另一层或薄片133以皱折平行于薄片的短边跨过薄片起皱。 In FIGS. 19 to 23, an embodiment is shown generally as shown in FIGS. 17 and 18 types of bending wave acoustic diaphragm 131, i.e., the acoustic diaphragm 131 comprises a plurality of plies or layers, the present embodiment sheet or layer of corrugations two substantially rectangular shaped thermally 132, 133, identical to each other two layers, one layer in addition to the sheet 132 along the corrugations parallel to the long side of the sheet wrinkling, while the other layer or sheet 133 corrugations parallel to the short side of the sheet across the sheet wrinkling. 从而,在两个薄片132、 133上的铍^i"成直角延伸,如图19中的箭头C和D所示,这包括为90°的角度e在内。在两个薄片上的皴折为大致方形横截面,并且高度和间距相同。 Thus, two sheets 132, the beryllium 133 ^ i "extends at right angles, as shown in arrows C and D in FIG. 19, which includes an angle of 90 °, including e. Cracked off on two sheets a substantially rectangular cross section, and the height and the same pitch.

两个层或薄片可以例如通过图22a、 b和c中所示的任一种方法结合。 Two layers or sheets can be, any of the methods b and c shown in, for example, by a combination of FIG. 22a. 在图22a中,薄片132、 133通过插入的粘结剂薄膜134结合,该粘结剂通过加热来活化,以便将薄片固定到一起而形成一个隔膜。 In Figure 22a, the sheet 132, 133 joined by inserting adhesive film 134, the adhesive activated by heat, so that the sheet is fixed together to form a membrane. 在图22b中,薄片通过热熔接而连接。 In Figure 22b, the sheet is connected by thermal fusion. 这可以通过如下方式实现,即,用热塑性材料(未示出)涂覆薄片的面对的表面中的一个或两个,该热塑性材料具有低于薄片的熔点,从而在加热时,该层可以熔化,或者至少软化,从而在薄片形成接触时导致各层熔接到一起。 This may be achieved as follows, i.e., thermoplastic material (not shown) one or both surfaces coated sheet facing in, the material having a lower melting point than the thermoplastic sheet, so that upon heating, the layer may the layers were fused together to cause melting, or at least soften, thereby forming a contact sheet. 另外,薄片本身可以直接软化,即,没有插入的涂层,软化到足以导致薄片在形成相互接触时固定到一起的程度。 Further, the sheet itself can be directly soften, i.e., with no intervening coating softens enough to cause sheet formation upon contact with each other to the extent secured together. 在图22c中,两个薄片的面对表面中的一个或两个例如通过丝网印刷印刷有粘结剂图案135,从而薄片在它们形成接触时连接到一起。 In Figure 22c, one or both facing surfaces of the two sheets with an adhesive in the pattern 135, for example, by screen-printing, so that the sheet joined together when they come into contact.

作为图19的实施例的示例,扬声器形成为具有尺寸为190mmx 125MM 的平面隔膜,且每层由250jim厚的丙烯酸薄膜的薄片形成。 As an example of the embodiment of FIG. 19, the speaker is formed with a size 190mmx 125MM planar diaphragm, and each film from 250jim thick acrylic sheet is formed. 各层利用Sarna-XiroPuroH热熔粘结剂层叠到一起,该粘结剂在真空成形薄片以形成皱折的各层之前以每平方米25gms的比率涂覆在各层上。 Before using Sarna-XiroPuroH layers were laminated together with a hot melt adhesive, the adhesive is vacuum formed sheet layers to form corrugations 25gms per square meter coated on the ratio of the respective layers. 层叠条件为在公称压力下80。 Nominal conditions in the laminate 80. C持续5分钟。 C for 5 minutes.

面板通过由5mm宽泡沫塑料(Miers M101A)带条构成的悬挂固定到总体尺寸为210mmx 145mm的矩形木制画框上,该木制画框后面开口,并且该悬挂围绕面板的所有边缘延伸。 A panel configured by 5mm wide foam tape (Miers M101A) secured to the suspension bar for the overall size of the 210mmx 145mm rectangular wooden frame, the wooden frame behind the opening, and extends all around the edge of the panel is suspended. 一个19mm的4欧姆Tianle内部移动线圏振动激励器用Loctite 406丙烯腈粘结剂固定到面板上。 4 ohms Tianle line moves inside rings of a vibration excitation 19mm acrylonitrile Used Loctite 406 adhesive onto the panel. 图23是在0.5m 处测量的2.83V驱动电压的扬声器的离轴功率响应曲线。 FIG 23 is off-axis power measured at the driving voltage of 2.83V at 0.5m loudspeaker response curves.

本发明可以被示为产生平面共鸣之外的复杂模态分布的方法,这满足电声规范的需求。 Complex Modal Distribution of the present invention can be shown to produce planar resonance outside, we need electroacoustic specification. 最终的目标函数可以包括考虑隔膜的尺寸、音响条件(例如局部边界和障碍的类型)、理想的频率响应、对薄片材料的有可能的限制的步骤,如果需要的话,加上对激励的位置和激励方法的相关特性的考虑。 The final objective function can include consideration of the diaphragm size, the acoustic conditions (e.g., type of local boundaries and obstacles), the ideal frequency response, the step of limiting possible sheet material, if required, together with the position of the excitation and consider the relevant characteristics of the excitation method.

复杂的分布可以通过以相对中等数量(少到三个)的可定义元件开始分析的步骤,并然后提取并将分析结构扩展,以增加元件的数量,从而模式密度达到令人满意的程度。 Complex distribution can be defined by a step at a relatively moderate number of elements (at least three) of the start of the analysis, and then extracted and analyzed extended structure, to increase the number of elements, so as to achieve a satisfactory degree of pattern density.

工业应用性 Industrial Applicability

过去,在制造分布模式扬声器(DML)时,存在两种主要的面板选择, 即:整体的或夹合型面板。 In the past, when manufacturing distribution pattern speaker (DML), there are two main selection panel, namely: overall or sandwich-type panel. 根据现有技术,这些面板的基频与面板硬度、 尺寸和重量相关。 According to the prior art, the fundamental frequency of the panels and the panel stiffness, dimensions and weight associated. 面板的基频通过增大面板的尺寸和面密度,并通过减小面板硬度来降低。 Panel fundamental frequency by size and increased surface density of the panel, and the panel is reduced by decreasing the hardness.

高频扩展由面板硬度、芯鞘模数(在夹合型面板情况下)和电磁激励器的耦合器环直径确定。 Extended high frequency (in the case of sandwich-type panels) and an electromagnetic actuator coupling ring diameter is determined by the hardness of the panel, a core-sheath modulus. 在这种情况下,高频性能通过增大面板硬度和芯鞘模数并通过减小耦合器环直径来提高。 In this case, to improve the high frequency performance by increasing panel stiffness and modulus of the sheath and the core by reducing the diameter of the ring coupler.

对于良好的低频性能的低面板硬度和对于良好高频扩展的高硬度的需求在制造小面板(比A4小)时会造成带宽限制。 Demand for low good low stiffness panel for a good high frequency performance and extended in the manufacture of small high hardness panel will cause a bandwidth limit (smaller than A4).

通过增加面板的高频性能的皱折,皱折的轮廓、形状和取向可以用来控制面板的弯曲硬度。 By increasing the high frequency performance of the panel corrugations, wrinkles of the contour, shape and orientation can be used to control the bending stiffness of the panel. 这使得面板特性可以定制,使得可以针对大范围的面板纵横比实现良好的模式性能。 This makes the panel characteristics can be customized, making it possible for a wide range of panel aspect ratio mode to achieve good performance. 皱折轮廓也可以是均匀一致的,或包含 Wrinkle profile may be uniform, or comprising

13变化的振幅和/或波长。 Amplitude and / or wavelength change of 13.

皱折的面板可以由多种材料制造,该材料包括但不局限于聚合物、化合物、纸、金属和陶瓷。 The corrugations may be manufactured from a variety of panel material, the polymer material including, but not limited to, compounds, paper, metal and ceramic. 这些材料可以为实心单体、泡沫、多层的层压制品或它们结合的形式。 These materials may be solid monomer, a foam, or a multi-layered laminate form of a combination thereof. 基底材料的厚度取决于最终的面板尺寸,但可能在 The thickness of the substrate material depends on the final size of the panel, but may

100jim和2mm之间。 100jim and between 2mm. 皱折的面板可以利用多种制造工艺形成,该制造工艺包括但不局限于振动成形、压模、注模、挤压成形、机加工和铸造。 Corrugations using a variety of manufacturing processes panel may be formed, the manufacturing process including but not limited to vibration molding, compression molding, injection molding, extrusion molding, machining and casting.

在制造工艺利用一个作为部件的"复制品"的工具(例如真空成形、 注模、压模和铸造)的情况下,面板悬挂可以结合到面板结构中,例如如图15所示。 In a manufacturing process using a "copy" of the tool as a component (e.g., vacuum forming, injection molding, and die casting) in the case, the panel may be bonded to the panel hanging structure, as shown in FIG 15. 由于这种结成的悬挂的轮廓、形状和形式控制其柔顺性,因此有可能设计如下的悬挂,使得面板刚性地安装到壳体或框架上,例如,如图l到4所示。 Due to this suspension to form a contour, shape and form of controlled flexibility, and therefore it is possible to design the following suspension, such that the panel is rigidly mounted to the housing or frame, for example, l to 4 shown in FIG. 这就消除了需要单独悬挂的需求,并防止面板的自由边缘共振,消除了潜在的着色(coloration)源。 This eliminates the need for a separate suspension needs, and to prevent the free edge of panel resonance, it eliminates potential coloring (coloration) source.

替换的方法可以是为声音主动区域和面板悬挂分别形成不同特性的不同薄片材料,不同的部分以任何方便的方式连接,例如通过粘结剂,或在共同成形它们时基本连接。 Alternatively the method may be a different sheet materials and sound active region formed suspension panel respectively different properties, different parts connected in any convenient manner, for example by adhesive, or substantially at a common connection molding thereof.

使用专用工具也可以实现附加的特征,如辅助装配的夹具点、驱动马达和质量定位器环。 Use special tools may be implemented additional features, such as a clip point of the sub-mount, the drive motor and the mass retainer ring. 这些特征可以用来简化部件组装和/或提高面板的美观。 These features may be used to simplify assembly of components and / or enhance the aesthetic panel.

从而,这些美观特征例如可以包括表面紋理、工艺品、商标和产品标识。 Thus, the appearance of these features may comprise, for example, surface texture, handicrafts, trademarks and product identity.

在通过真空成形制造皱折的面板时,工艺特性对面板的设计施加了多个限制。 Producing wrinkle during molding by a vacuum panel, the panel process design characteristics of a plurality of restrictions applied. 尤其重要的是,聚合物薄膜由于其遵循工具的轮廓而减薄。 It is particularly important that the polymer film follows the contour of the tool due to its thinned. 通常, 并不推荐超过75%的拉伸比,由于这会促使薄膜的过分减薄。 In general, we do not recommend more than 75% of the draw ratio, as this will lead to excessive thinning of the film. 在DML用途中由于抗疲劳性随着薄膜厚度降低而降低,因此特别重要。 In DML uses the fatigue resistance decreases as the film thickness decreases due, is particularly important.

对于拉伸比的这个限制对可以实现的最大硬度具有很大影响,并因此对铍折的结构具有很大影响。 For this restriction of the stretch ratio has a great influence on the maximum hardness can be achieved, and thus has a great influence on the structure of beryllium off. 为了使面板硬度加倍,平行于皱折方向Dy的皱折的深度和宽度需要加倍,以保持75%的拉伸比。 To doubled the hardness of the panel, parallel to the direction of corrugations of Dy corrugations need depth and width is doubled, in order to maintain 75% draw ratio. 然而,由于皱折深度不影响横跨铍折的硬度Dx,因此,面板的各向异性也加倍。 However, since the depth of the wrinkles across does not affect break hardness beryllium Dx, therefore, anisotropy of the panel is also doubled.

在成形工艺过程中聚合物薄膜的减薄也影响面板的声音响应。 In the forming process of the polymer film thinning also affects the sound panel response. 将激励器安装到面板的薄侧导致高频输出减弱。 The actuator is mounted to the thin side of the panel results in reduced high-frequency output. 为了实现最佳的高频性能,激励器可以安装到与工具不接触的表面上。 To achieve the best high frequency performance, the exciter may be mounted on the surface not in contact with the tool.

本发明的弯曲波平板形声音辐射器的优点包括:1. 在通过适当的成形工艺的模制/成形过程中,面板上的激励器区域可 Bending advantage radiator plate-shaped sound waves according to the present invention comprises: a forming process by a suitable molding / forming process, the excitation region on the panel

以在没有额外成本的情况下针对更加的HF性能而硬化; In the absence of additional costs to the hardened case for more HF performance;

2. 石更度的中心同样可以在无额外成本情况下轻易偏移,由此可以改善在几何上非优化激励器位置处的模态; 2. Stone center more easily offset the same degree in the case where no additional costs, thereby improving the non-optimized mode at a position on the actuator geometry;

3. 面板的弯曲波特性可以通过硬化元件形式和深度加以控制; 3. The panel bending wave characteristics can be controlled by the form and depth of the stiffening element;

4. 由于它的质量/硬度比可以很低,可以毫不费力并在无额外成本的情况下实现更高的声音效率; 4. Because of its mass / stiffness ratio can be low, and no difficulty to achieve higher efficiency in the voice situation without additional costs;

5. 硬化元件的随机构图可以潜在地使面板在实际中获得更高的振动随机程度; The cured composition random element of the panel can potentially achieve a higher degree of randomness in practice vibration;

6. 由于容易操纵硬度轮廓的能力,WO 98/39947中描述的那种类型的DML可以在实际中更容易实现,该DML是具有调节高频性能和总的音调平衡能力并与鼓膜范围整合的中心驱动的、动态平衡驱动器; 6. Since the capacity of the hardness profile is easy to handle, of the type in WO 98/39947 DML description can be more easily achieved in practice, is the DML regulate high frequency performance and the overall tone balance and integration range eardrum central drive, the drive homeostasis;

7. 通过以相同材料形成惯用的"辊围绕,,或类似的悬挂特性,可以在没有额外成本情况下对框架实现真正的传统上接受的低扭曲接口; 7. By forming the material with the same conventional "roll around ,, suspension characteristic or the like, may be implemented on a real acceptable conventional low distortion interface frame without additional costs in the case;

8. 利用同心/螺旋图案的硬化元件,可以针对频率实现具有受控辐射表面积的鼓膜辐射器; 8. The use of a concentric stiffening element / spiral pattern, can be realized eardrum radiator has a surface area of ​​controlled radiation for the frequency;

9. 声音辐射器面板整个由薄片材料制成的事实,在实际中的公差仅由单个材料的公差支配,这在制造中提供了相当大的优点; 9. The fact that the entire sound radiating panel made of sheet material, in practice only a tolerance dictated by the tolerance of a single material, which provides a considerable advantage in manufacturing;

10. 出于同样原因,诸如面板阻尼的材料特性可以通过选择原材料和/ 或阻尼层来直接加以控制; 10. For the same reason, a material such as damping characteristics of the panel can be directly controlled by selection of raw materials and / or damping layer;

11. 材料不局限于合成塑料材料,并可以是浆状或装蛋箱(egg-crate)材料,该材料成本很低,并且可适用于一定的用途中。 11. The material is not limited to the synthetic plastics material, and may be a slurry or egg crate (egg-crate) material, the material cost is low, and is applicable to certain uses. 薄片材料的材料特性可以通过适当的过滤器,例如纳米过滤器来改进,以提供优良的硬度-重量比。 Material properties of the sheet material by a suitable filter, such as nano-filters modified to provide good stiffness - weight ratio.

15 15

Claims (32)

1.一种弯曲波平板形声音辐射器,其由平面薄片形式的材料制成,以限定一个声音主动区域,并包括至少一个皱折形式的整体硬化元件,该硬化元件延伸到薄片的平面之外,并至少局部跨过辐射器的声音主动区域,使得该薄片的平面部分保持,该硬化元件基本为U形横截面;并且该声音辐射器由一个皱折的薄片或由多个皱折的薄片构成。 A plate-shaped sound bending wave radiator, which is made of a planar sheet material in the form to define the active region of a sound, and comprises at least one crease in the form of integral stiffening element, the stiffening element extends into the plane of the sheet outside, and at least partially across the active area of ​​the sound radiator, such that the planar portion of the holding sheet, the stiffening element is substantially U-shaped cross-section; and the sound radiator consists of a sheet or a plurality of corrugations the corrugations sheet constituted.
2. 如权利要求1所述的弯曲波平板形声音辐射器,其中,所述薄片在声音主动区域上基本为均匀的厚度,该区域在由硬化元件的整体成形而施加的限制之内。 Plate-shaped sound bending wave radiator as claimed in claim 1, wherein, in said acoustically active area of ​​the sheet substantially uniform thickness, within the limits of integrally molded in the region of the stiffening element applied to it.
3. 如权利要求1或2所述的弯曲波平板形声音辐射器,其特征在于, 包括布置成在多个方向上跨过声音主动区域延伸的硬化元件。 Bending wave radiators or plate-shaped sound according to claim 12, wherein the stiffening element comprises a sound arranged across the active region extending in multiple directions.
4. 如权利要求1或2所述的弯曲波平板形声音辐射器,其特征在于, 包括布置成平行阵列的硬化元件。 Bending wave radiators or plate-shaped sound according as claimed in claim 12, wherein the stiffening element comprises arranged in parallel array.
5. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件完全跨过声音主动区域延伸。 5. A bending wave radiators or plate-shaped sound according to claim 1, wherein the stiffening element extends fully across the active region sound.
6. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件是直线形的。 6. The plate-shaped sound bending wave radiator of claim 1 or claim 2, wherein the stiffening element is rectilinear.
7. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件基本设置成径向阵列,从声音主动区域上要定位振动激励器的位置处延伸,薄片声音主动区域的大致平面的部分在基本上径向的硬化元件之间限定。 As claimed in claim 1 or the plate-shaped sound bending wave radiator, wherein the stiffening element arranged substantially in a radial array, the sound from the active region to be located at a position extending in the vibration exciter, the active region of the sheet sound a generally planar portion defined between the stiffening element is substantially radial.
8. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件在其长度上基本为均匀的横截面。 Bending wave radiators or plate-shaped sound according as claimed in claim 12, wherein the stiffening element over its length a substantially uniform cross-section.
9. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,声音主动区域大致为矩形,并且硬化元件相对声音主动区域的边缘成角度地延伸。 9. A bending wave radiators or plate-shaped sound according to claim 1, wherein the active region is substantially rectangular sound, and extends at an angle relative to the hardened surface region of the active sound element.
10. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件是环形的。 10. The plate-like sound bending wave radiator of claim 1 or claim 2, wherein the stiffening element is annular.
11. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件包括沿不同长度方向延伸的各部分。 11. The plate-like sound bending wave radiator of claim 1 or claim 2, wherein the stiffening element includes portions extending in different longitudinal directions.
12. 如权利要求1或2所述的弯曲波平板形声音辐射器,其中,硬化元件是离散的。 12. The plate-like sound bending wave radiator of claim 1 or claim 2, wherein the stiffening element is discrete.
13. 如权利要求12所述的弯曲波平板形声音辐射器,其中,硬化元件成形为在横截面中倒圆,以避免锋利的边缘。 Shaped bending wave plate 13. Sound radiator according to claim 12, wherein the stiffening element shaped as rounded in cross section to avoid sharp edges.
14. 如权利要求1所述的弯曲波平板形声音辐射器,其中,薄片材料是可塑性变形材料。 The bending wave shaped plate 14. Sound radiator according to claim 1, wherein the sheet material is a plastically deformable material.
15. 如权利要求l所述的弯曲波平板形声音辐射器,其中,薄片包括至少局部围绕声音主动区域的终端区域。 Shaped bending wave plate 15. Sound radiator according to claim l, wherein the sheet comprises a terminal region at least partially surrounds the active region of the sound.
16. 如权利要求l所迷的弯曲波平板形声音辐射器,其中,硬化元件在其长度上高度基本均匀一致。 16. A fan as claimed in claim l bending wave radiator plate-shaped sound, wherein the stiffening element over its length substantially uniform height.
17. 如权利要求1所述的弯曲波平板形声音辐射器,其中,多个薄片面对面结合。 Shaped bending wave plate 17. Sound radiator according to claim 1, wherein the plurality of binding sheets face to face.
18. 如权利要求17所述的弯曲波平板形声音辐射器,其中,在一个薄片上的皱折相对于相邻薄片上的相邻皴折成角度。 Shaped bending wave plate 18. Sound radiator according to claim 17, wherein, corrugations in a sheet relative to adjacent the folded sheet adjacent cracked angle.
19. 一种扬声器,包括根据上述权利要求1所述的弯曲波平板形声音辐射器,以及偶合到面板的声音主动区域上的振动转换器。 19. A loudspeaker comprising a bending wave radiator plate-shaped sound according to claim 1, and a vibration transducer coupled to the sound panel active area.
20. 如权利要求19所述的扬声器,其中,面板是热成形的塑料。 20. A loudspeaker according to claim 19, wherein the panel is a thermoformed plastic.
21. 如权利要求20所述的扬声器,其中,振动转换器安装到面板的一侧上,塑料从该侧移动而形成硬化元件。 21. A loudspeaker according to claim 20, wherein the vibration transducer is mounted on the side of the panel, is moved from the side of the plastic stiffening element is formed.
22. —种制造弯曲波平板形声音辐射器的方法,包括将平面的薄片形成为面板,该面板具有至少一个整体的皱折元件,该皱折元件延伸到平面的薄片之外,并且至少局部跨过薄片,且大致为U形横截面,使得该薄片的平面部分保持,以便将薄片硬化成具有可以支撑和传播弯曲波的理想能力; 并且该声音辐射器由一个皱折的薄片或由多个皱折的薄片构成。 22. The - method of manufacturing a plate-shaped sound bending wave radiator, comprising a plane sheet is formed as a panel having at least one integral element corrugations, the corrugations element extending out of the plane of the sheet, and at least partially across the sheet, and a generally U-shaped cross-section, such that the planar portion of the holding sheet, so as to harden into a sheet having a support and able to spread over the bending wave; and the sound radiator consists of a sheet or a plurality of corrugations It constitutes a sheet corrugations.
23. 如权利要求22所述的方法,其特征在于,包括布置至少一个硬化元件,以便硬化薄片,来支持驻波在面板内的理想频率分布。 23. The method according to claim 22, characterized in that the arrangement comprises at least one stiffening element, to harden the sheet, over a frequency to support the standing wave distribution within the panel.
24. 如权利要求22或23所述的方法,其特征在于,包括将薄片形成为具有一个或多个边缘或其他部分,用于将声音辐射器连接或支撑到框架或其他支撑装置上。 24. The method of claim 22 or claim 23, wherein the sheet is formed comprises one or more other edges or portions having, for connecting the radiator to the sound or the support frame or other support means.
25. 如权利要求24所述的方法,其特征在于,包括形成边缘或其他连接部分,以提供弹性悬挂。 25. The method according to claim 24, further comprising forming an edge or other connecting portion to provide a resilient suspension.
26. 如权利要求26所述的方法,其特征在于,包括形成边缘或其他部分,以提供如下的装置,通过该装置可以基本上约束薄片的声音主动区域。 26. The method according to claim 26, further comprising forming an edge or other portion to provide the following apparatus, the apparatus may be substantially constrained by the active region of the sheet of sound.
27. 如权利要求22或23所述的方法,其特征在于,包括选择硬化元件的布置方式,以便减小或限定在薄片的声音主动区域内的弯曲弱化的线的平均自由行程。 27. The method of claim 22 or claim 23, wherein the stiffening element comprises selecting arrangement, in order to reduce or limit the mean free path of the sheet in the region of the active voice weakened bending lines.
28. 如权利要求22所述的方法,其特征在于,包括将坡折薄片的叠置对结合。 28. The method according to claim 22, characterized in that the slope break comprising a sheet stacked on the binding.
29. 如权利要求28所述的方法,其中,叠置的薄片通过焊接结合。 29. The method according to claim 28, wherein the stacked sheets by welding.
30. 如权利要求29所述的方法,其特征在于,包括向薄片上要焊接到一起的表面涂覆热塑性材料,该热塑性材料的熔点低于薄片材料的熔点, 将薄片形成为面对面接触并加热薄片以便熔化涂层,从而将薄片熔接到一起。 30. The method according to claim 29, characterized in that it comprises a sheet to be welded together on the coated surface of the thermoplastic material, the melting point of the thermoplastic material below the melting point of the sheet material, the sheet is heated and formed to face contact sheet to melt the coating, whereby the sheet is welded together.
31. 如权利要求28到30中任一项所述的方法,其特征在于,包括将该对薄片中一个上的皱折布置成相对于在该对薄片的另一个上的皱折成角度。 The method of any one of 28 to 30 according to claim 31, wherein the sheet comprises a crease on the upper corrugations are arranged at an angle with respect to the other of the sheet in the pair.
32. 如权利要求24所述的方法,其特征在于,包括制造由所述薄片或多个薄片构成的声音辐射器。 32. The method according to claim 24, characterized in that it comprises producing the acoustic emission constituted by the sheet or plurality of sheets.
CN 02806868 2001-03-23 2002-03-13 Bending wave acoustic radiator CN100551133C (en)

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WO2002078391A3 (en) 2007-10-25
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GB2386790A (en) 2003-09-24
HK1055655A1 (en) 2005-01-14

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