CN110418253B - Diaphragm and speaker - Google Patents
Diaphragm and speaker Download PDFInfo
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- CN110418253B CN110418253B CN201810402942.0A CN201810402942A CN110418253B CN 110418253 B CN110418253 B CN 110418253B CN 201810402942 A CN201810402942 A CN 201810402942A CN 110418253 B CN110418253 B CN 110418253B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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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
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Abstract
本发明属于电子产品技术领域，尤其涉及一种振膜及扬声器。振膜包括金属球顶、非金属膜部和柔性悬边；非金属膜部粘接于金属球顶的外周缘，非金属膜部的外周缘朝与金属球顶同向的方向延伸并向远离金属球顶的方向逐渐扩散，柔性悬边粘接于非金属膜部的外周缘。本发明的振膜，其金属球顶、非金属膜部以及柔性悬边三者结合，在增大振膜的整体刚性同时，也能兼顾调整振膜的内部阻尼特性和振膜振动的顺性，更为有效的降低了振膜在高频振动时的分割振动，减少了振膜高频时的谐波失真，使振膜的频宽得以延伸，提升了振膜的整体性能。
The present invention belongs to the technical field of electronic products, and in particular, relates to a diaphragm and a loudspeaker. The diaphragm includes a metal dome, a non-metallic membrane portion, and a flexible suspension edge; the non-metallic membrane portion is bonded to the outer periphery of the metal dome, the outer periphery of the non-metallic membrane portion extends in the same direction as the metal dome and gradually diffuses in the direction away from the metal dome, and the flexible suspension edge is bonded to the outer periphery of the non-metallic membrane portion. The diaphragm of the present invention, which combines the metal dome, the non-metallic membrane portion, and the flexible suspension edge, can increase the overall rigidity of the diaphragm while also adjusting the internal damping characteristics of the diaphragm and the compliance of the diaphragm vibration, more effectively reducing the split vibration of the diaphragm during high-frequency vibration, reducing the harmonic distortion of the diaphragm at high frequencies, extending the bandwidth of the diaphragm, and improving the overall performance of the diaphragm.
Description
Technical Field
The invention belongs to the technical field of electroacoustic products, and particularly relates to a vibrating diaphragm and a loudspeaker.
Background
In recent years, as the requirements of the market on the functional characteristics of a loudspeaker are higher and higher, a vibrating diaphragm is used as one of main components for vibrating and sounding the loudspeaker, and the quality of the vibrating diaphragm determines the effective frequency range, distortion and tone quality of the loudspeaker to a great extent, so that the vibrating diaphragm is a key design for controlling the sound effect of the loudspeaker. The performance of the diaphragm depends on the geometry, materials and the like of the diaphragm, and the traditional diaphragm is mostly composed of single materials such as paper, plastic or aluminum and aluminum alloy, and the diaphragm manufactured and molded by the materials has the defects of insufficient rigidity and damping characteristics or both the rigidity and the damping characteristics, so that the loudspeaker is easy to generate segmentation distortion during high-frequency vibration and the sound effect of the loudspeaker is influenced.
Disclosure of Invention
The invention aims to provide a vibrating diaphragm and a loudspeaker, and aims to solve the technical problem that in the prior art, the loudspeaker is easy to distort due to insufficient rigidity or damping characteristics of the vibrating diaphragm.
In order to achieve the above purpose, the invention adopts the following technical scheme: a vibrating diaphragm comprises a metal ball top, a nonmetallic film part and a flexible suspension edge; the nonmetallic film part is adhered to the outer periphery of the metal dome, the outer periphery of the nonmetallic film part extends towards the direction same as the metal dome and gradually diffuses towards the direction far away from the metal dome, and the flexible suspension edge is adhered to the outer periphery of the nonmetallic film part.
Further, the nonmetallic film part comprises an annular flat section and a horn-shaped cone section, wherein the annular flat section is formed by extending the outer periphery of the metal dome in the horizontal direction, and the horn-shaped cone section is formed by turning the outer periphery of the annular flat section towards the protruding direction of the metal dome and gradually diffusing in the direction away from the metal dome.
Further, the maximum height of the outer periphery of the flare cone section is greater than the maximum height of the metal dome.
Further, the lower surface of the annular flat section facing away from the metal dome is regularly flat and parallel to the horizontal plane.
Further, the cross sections of the metal dome and the nonmetallic film part are W-shaped.
Further, the middle part of the flexible hanging edge forms an arch structure towards the protruding direction of the metal ball top.
Further, the metal dome is made of one or more of the following metals: magnesium, aluminum, beryllium, titanium.
Further, the nonmetallic film part is made of paper, a mixture material of paper and mica, a mixture material of paper and blending substances or a biological diaphragm material.
Further, the flexible hanging edge is made of PU material, silica gel, plastic, resin, silk or cloth.
Further, the thickness of the metal dome is 6 μm to 120 μm.
Further, the metal dome and the nonmetallic film part are bonded through a positive bonding process or a negative bonding process.
The invention has the beneficial effects that: the vibrating diaphragm comprises a metal ball top, a nonmetallic film part and a flexible suspension edge which are made of different materials; the metal ball top is made of a metal material with high rigidity, so that the overall rigidity of the vibrating diaphragm is increased, and the segmentation distortion of the vibrating diaphragm is reduced; the nonmetallic film part is made of a nonmetallic material with lighter texture, so that the overall quality of the vibrating diaphragm is reduced, and the nonmetallic material has better damping characteristics, so that the internal damping of the vibrating diaphragm can be improved and adjusted, and the high frequency of the vibrating diaphragm is effectively expanded; the flexible cantilever edge is made of flexible materials, so that the softness of the flexible materials can effectively improve the compliance of the vibrating diaphragm, normal vibration of the vibrating diaphragm is guaranteed, and meanwhile, the effect of increasing the internal damping of the vibrating diaphragm can be achieved. Therefore, the metal ball top, the nonmetal film part and the flexible overhanging edge are combined, so that the integral rigidity of the vibrating diaphragm is increased, meanwhile, the internal damping characteristic and the vibration compliance of the vibrating diaphragm can be adjusted, the split vibration of the vibrating diaphragm in high-frequency vibration is effectively reduced, the harmonic distortion of the vibrating diaphragm in high-frequency is reduced, the frequency width of the vibrating diaphragm is prolonged, and the integral performance of the vibrating diaphragm is improved.
The other technical scheme of the invention is as follows: a loudspeaker comprises the vibrating diaphragm.
According to the electronic product, due to the adoption of the vibrating diaphragm, the rigidity of the loudspeaker vibrating system is enhanced, the internal damping characteristic is enhanced, the split vibration of the loudspeaker at high frequency is reduced, the bandwidth of the loudspeaker is effectively expanded, the distortion of the loudspeaker is reduced, a full-frequency loudspeaker with moderate damping, wide dynamic range and rich tone is realized, and the hearing experience of a user is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a diaphragm according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic structural diagram of a speaker according to a second embodiment of the present invention;
fig. 4 is an exploded view of a speaker according to a second embodiment of the present invention;
fig. 5 is a sectional view taken along line B-B in fig. 3.
Wherein, each reference sign in the figure:
10-magnetic circuit 11-magnetic member 12-magnet
20-Vibration system 21-vibrating diaphragm 22-voice coil
30-Speaker support 31-U cup 32-basin stand
40 Damping enhancement system 41 first damping member 42 second damping member
50-Circuit board 111-first magnetic gap 121-second magnetic gap
211-Metal ball top 212-nonmetallic film 213-flexible hanging edge
311-Through hole 2121-annular flat section 2122-trumpet-shaped cone section.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 5 are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Embodiment one:
As shown in fig. 1 and 2, the present invention provides a diaphragm 21, wherein the diaphragm 21 includes a metal dome 211, a non-metal film 212 and a flexible hanging edge 213; the non-metal film 212 is adhered to the outer periphery of the metal dome 211, and the outer periphery of the non-metal film 212 extends in the same direction as the metal dome 211 and gradually diffuses in a direction away from the metal dome 211, i.e. the outer periphery of the non-metal film 212 extends in a direction away from the metal dome 211; the flexible hanging edge 213 is adhered to the outer periphery of the nonmetallic film part 212, that is, the flexible hanging edge 213 is connected to the outer periphery of the nonmetallic film part 212, and the outer periphery of the flexible hanging edge 213 extends towards the direction away from the metallic dome 211.
The vibrating diaphragm 21 of the embodiment of the invention comprises a metal dome 211, a nonmetallic film part 212 and a flexible hanging edge 213 which are made of different materials; the metal dome 211 is made of a metal material with high rigidity, so that the overall rigidity of the diaphragm 21 is increased, and the segmentation distortion of the diaphragm 21 is reduced; the nonmetallic film 212 is made of a nonmetallic material with lighter texture, so that the overall mass of the diaphragm 21 is reduced, and the nonmetallic material has better damping characteristics, so that the internal damping of the diaphragm 21 can be improved and adjusted, and the high frequency of the diaphragm 21 is effectively expanded; the flexible overhanging edge 213 is made of flexible material, and the softness of the flexible material can effectively improve the compliance of the diaphragm 21, ensure the normal vibration of the diaphragm 21, and increase the internal damping of the diaphragm 21. Therefore, the combination of the metal dome 211, the non-metal film 212 and the flexible overhanging edge 213 can increase the overall rigidity of the diaphragm 21, and simultaneously can also adjust the internal damping characteristic of the diaphragm 21 and the compliance of the diaphragm 21, so as to more effectively reduce the split vibration of the diaphragm 21 during high-frequency vibration, reduce the split distortion of the diaphragm 21 during high-frequency vibration, extend the bandwidth of the diaphragm 21, improve the overall performance of the diaphragm 21, and enable the diaphragm 21 to achieve full-band (20 hz-20 khz) frequency response.
In this embodiment, as shown in fig. 2, the nonmetallic film 212 includes an annular flat section 2121 and a flared cone section 2122, the annular flat section 2121 is formed by extending the outer periphery of the metal dome 211 in the horizontal direction, and the flared cone section 2122 is formed by folding the outer periphery of the annular flat section 2121 in the protruding direction of the metal dome 211 and gradually diffusing in the direction away from the metal dome 211. That is, the diaphragm 21 of the present embodiment includes a metal dome 211 with a convex middle part in a hemispherical shape, the periphery of the hemispherical metal dome 211 extends in a horizontal direction to form an annular flat section 2121 in a ring shape, and the periphery of the annular flat section 2121 continues to be turned over towards the convex direction of the metal dome 211 and extends away from the metal dome 211 to form a horn-shaped cone section 2122 in a horn shape.
Specifically, due to the hemispherical structure with the metal dome 211 protruding outwards as the center, when the diaphragm 21 vibrates, the metal dome 211 vibrates to generate and apply a first force to the middle annular flat section 2121, which is away from the metal dome 211; meanwhile, since the flared cone 2122 is disposed to protrude toward the metal dome 211, when the diaphragm 21 vibrates, the flared cone 2122 applies a second force to the annular flat 2121 toward the metal dome 211; the first force and the second force act on the annular flat section 2121 at the same time, or the first force is transferred to the horn-shaped cone section 2122 through the annular flat section 2121, the second force is transferred to the metal dome 211 through the annular flat section 2121, and the directions of the first force and the second force are opposite, when the first force and the second force act on the annular flat section 2121 with a flat structure, the first force and the second force can be partially or completely counteracted, so that the force generated when the diaphragm 21 vibrates and deforming the diaphragm 21 can be completely or partially counteracted, the rigidity of the diaphragm 21 is improved, the thickness of the diaphragm 21 is reduced under the condition that the rigidity is fixed, the internal damping characteristic of the diaphragm 21 is increased, and the split distortion of the diaphragm 21 at high frequency is weakened, so that the normal vibration sound production of the diaphragm 21 is ensured.
In this embodiment, as shown in fig. 5, the maximum height of the outer periphery of the flare cone section 2122 of the nonmetallic film portion 212 is greater than the maximum height of the metallic dome 211. Thus, when the diaphragm 21 is fixed on the support of the speaker, the metal dome 211 can vibrate in the vibration space formed by the horn-shaped cone 2122 and the speaker support, so that a larger vibration space is provided for the metal dome 211, and the vibration frequency range of the diaphragm 21 can be effectively expanded.
In this embodiment, as shown in fig. 2 and 5, the upper and lower surfaces of the annular flat section 2121 are regularly flat and parallel to the horizontal plane. When the diaphragm 21 is applied to a loudspeaker and is fixedly connected with the voice coil 22, the voice coil 22 is only required to be adhered to the lower surface of the annular flat section 2121, namely the annular flat section 2121 plays a role of positioning the voice coil 22, so that the connection and fixation between the voice coil 22 and the diaphragm 21 are more convenient and the operation is simpler, and the smooth surface structure of the diaphragm can improve the laminating degree of the voice coil 22 and does not influence the connection stability of the voice coil 22 due to uneven surface; in addition, when the diaphragm 21 is vibrated by force, the annular flat section 2121 is also vibrated by force, so that it is designed into a planar structure with two flat surfaces, and only force in the up-down direction is generated when it vibrates, but force in the horizontal direction is not generated, and for the annular flat section 2121, such force in the horizontal direction is unfavorable for the vibration and sound generation, and it not only affects the normal vibration of the diaphragm 21, but may even cause deformation of the diaphragm 21.
In this embodiment, as shown in fig. 2, the cross sections of the metal dome 211 and the nonmetallic film part 212 are formed together in a W shape, that is, the cross section of the diaphragm 21 is formed in a W shape as a whole. As shown by the broken line in fig. 2, the cross section of the metal dome 211 and the nonmetallic film part 212 together form a W-shaped cross section (the cross section of the diaphragm 21 is W-shaped), which means that the highest point of the horn-shaped cone 2122 on the left side of the metal dome 211, the middle point of the annular flat 2121 on the left side of the metal dome 211, the dome vertex of the metal dome 211, the middle point of the annular flat 2121 on the right side of the metal dome 211, and the highest point of the horn-shaped cone 2122 on the right side of the metal dome 211 are sequentially connected to form the W-shaped cross section of the diaphragm 21 of the embodiment.
In this embodiment, as shown in fig. 2, the middle portion of the flexible hanging edge 213 is arched in the protruding direction of the metal dome 211 to form an arch-shaped structure. The middle part of the flexible suspension edge 213 arches upwards, so that the effective vibration area of the flexible suspension edge 213 is increased, the normal sound production of the vibrating diaphragm 21 is more effectively ensured, and meanwhile, the integral damping characteristic of the vibrating diaphragm 21 is also increased, so that the rigidity of the vibrating diaphragm 21 can be further improved, the harmonic distortion of the vibrating diaphragm 21 in the high frequency process of the embodiment is improved, and the functional characteristic of the vibrating diaphragm 21 is improved.
In this embodiment, the metal dome 211 is preferably made of one or more of the following metals: the magnesium, aluminum, beryllium, titanium, i.e., the metal dome 211 is preferably made of magnesium, aluminum, beryllium, titanium, magnesium alloy, aluminum alloy, beryllium alloy, or titanium alloy. The metal materials have the characteristics of stronger rigidity and lighter texture, and the diaphragm 21 manufactured by using the metal materials can play roles of improving the rigidity of the diaphragm 21, reducing the segmentation distortion of the diaphragm 21 and extending the bandwidth of the diaphragm 21.
In this embodiment, the nonmetallic film 212 is preferably made of paper, a mixture of paper and mica, a mixture of paper and blend, or a bio-diaphragm. Because the non-metal material has good damping characteristics, when the non-metal material is combined with the metal dome 211, the internal damping of the metal dome 211 can be improved, and the functions of improving the overall rigidity of the diaphragm 21, adjusting the internal damping and reducing the distortion of the diaphragm 21 are achieved.
In this embodiment, the flexible hanging edge 213 is preferably made of PU material, silicone, plastic, resin, silk or cloth. When the diaphragm 21 is formed together with the metal dome 211 and the nonmetallic film part 212, the rigidity of the flexible material is weaker than that of the metal material and other nonmetallic materials, the texture of the flexible material is softer and the flexibility is better, so that the flexible material is easier to vibrate, and the diaphragm 21 is easier to vibrate and sound, in addition, the damping characteristic of the flexible material is stronger than that of the metal material and other nonmetallic materials, so that the overall damping characteristic of the diaphragm 21 can be effectively increased, the harmonic distortion of the diaphragm 21 at high frequency is reduced, the bandwidth of the diaphragm 21 is prolonged, and the overall performance of the diaphragm 21 is improved. Specifically, the plastic material may be any one of PET, PEN, PEEK, PEI, PAR and PEI.
In this embodiment, the thickness of the metal dome 211 is preferably 6 μm to 120 μm, and the metal dome 211 with different thickness has different rigidity strength correspondingly, and the rigidity of the metal dome 211 increases synchronously with the increase of the thickness of the metal dome 211, so the thickness of the metal dome 211 can be selected according to the rigidity strength required by the diaphragm 21 when designing the diaphragm 21, and the thickness is not particularly limited here. It may be 6 μm, 10 μm, 30 μm, 50 μm, 40 μm, 60 μm, 80 μm, 100 μm, 120 μm, etc.
In the present embodiment, the metal dome 211 and the nonmetallic film part 212 are preferably bonded by a positive bonding process or a negative bonding process. That is, when the nonmetallic film part 212 is adhesively connected to the outer circumference of the metal dome 211, the lower surface of the nonmetallic film part 212 may be adhered to the upper surface of the metal dome 211; the upper surface of the nonmetallic film 212 may be bonded to the lower surface of the metal dome 211.
Embodiment two:
As shown in fig. 3 to 5, a second embodiment of the present invention provides a speaker, which includes the diaphragm 21 in the first embodiment.
In the speaker of this embodiment, due to the use of the diaphragm 21, the rigidity of the speaker vibration system 20 is enhanced, the internal damping characteristic is enhanced, the split vibration of the speaker at high frequency is reduced, the bandwidth of the speaker is effectively extended, the distortion of the speaker is reduced, a full-frequency speaker with moderate damping, wide dynamic range and rich tone is realized, and the hearing experience of the user is improved.
Specifically, as shown in fig. 3 to 5, the speaker of the present embodiment includes a magnetic circuit system 10, a vibration system 20, and a speaker support 30 for accommodating the magnetic circuit system 10 and the vibration system 20, where the speaker support 30 includes a frame 32 and a U cup 31, the frame 32 and the U cup 31 are fastened together and are enclosed together to form a mounting cavity, the magnetic circuit system 10 and the vibration system 20 are fixed in the mounting cavity, the vibration system 20 includes a diaphragm 21 in the first embodiment, and a periphery of a flexible suspension edge 213 of the diaphragm 21, which is away from the metal dome 211, is fixedly connected with the frame 32.
In this embodiment, as shown in fig. 4 and 5, the magnetic circuit system 10 includes a magnetic member 11 and a magnet 12 sequentially stacked in a U-cup 31, and centers of the U-cup 31, the magnetic member 11 and the magnet 12 are located on the same straight line; the through hole 311 is formed in the center of the inner bottom of the U-cup 31, the magnet 12 and the magnetic member 11 are both in a ring structure, and the diameters of the inner rings of the magnet 12 and the magnetic member 11 are the same as the diameters of the through hole 311, when the magnet 12 and the magnetic member 11 are arranged in the U-cup 31, the inner rings of the magnet 12 and the magnetic member 11 are aligned with the through hole 311 at the bottom of the U-cup respectively, so that the purpose of preparing for positioning is achieved; the magnet 12 and the magnetic member 11 are spaced from the inner side wall of the U-cup 31, a first magnetic gap 111 is formed between the magnet 12 and the inner side wall of the U-cup 31, a second magnetic gap 121 is formed between the magnetic member 11 and the inner side wall of the U-cup 31, and the first magnetic gap 111 and the second magnetic gap 121 are communicated with each other.
Specifically, as shown in fig. 4 and 5, the shape and size of the magnetic member 11 are basically equivalent to those of the magnet 12, the lower surface of the magnet 12 is attached to the inner bottom surface of the U-cup 31, the upper surface of the magnet 12 is attached to the lower surface of the magnetic member 11, and the side edges of the magnet 12 and the side edges of the magnetic member 11 are aligned vertically, so that the area of communication between the first magnetic gap 111 and the second magnetic gap 121 is maximized, the maximum space is provided for the formation of magnetic induction lines, and the sound production efficiency of the speaker of the present embodiment is improved.
In this embodiment, as shown in fig. 5, the vibration system 20 further includes a voice coil 22, wherein a first end of the voice coil 22 is fixedly connected to the lower surface of the annular flat section 2121, and a second end of the voice coil 22 passes through the second magnetic gap 121 and is suspended in the first magnetic gap 111. The voice coil 22 is used as a power source of the speaker of the present embodiment, one end of the voice coil 22 is fixedly connected with the lower surface of the annular flat section 2121 of the nonmetallic film portion 212 of the diaphragm 21, and the other end is suspended in the first magnetic gap 111 through the second magnetic gap 121, when an external audio current signal is transmitted to the voice coil 22, the voice coil 22 cuts magnetic induction lines in the first magnetic gap 111 and the second magnetic gap 121 and generates mechanical vibration, so that the speaker vibrates and sounds.
In this embodiment, as shown in fig. 4 and 5, the speaker further includes a damping enhancement system 40, and the damping enhancement system 40 includes a first damping member 41 capped at the outer bottom of the tub 32 and a second damping member 42 capped at the outer bottom of the U-cup 31. The first damping member 41 and the second damping member 42 are respectively disposed at the outer bottom of the basin frame 32 and the outer bottom of the U-cup 31, so as to enhance the damping characteristic of the diaphragm 21, reduce the vibration reaction force of the diaphragm 21, increase the vibration effect of the diaphragm 21, avoid the sound quality deterioration of the diaphragm 21 caused by the metal ball top 211 made of metal, and improve the sound production effect of the loudspeaker. Specifically, the first damping member 41 and the second damping member 42 of the present embodiment are each made of a damping material that is common in the market and has good damping performance, such as damping paper, damping rubber, damping plastic, and the like, and preferably damping paper that is inexpensive and has good damping characteristics.
In this embodiment, as shown in fig. 4 and 5, the speaker further includes a circuit board 50, the circuit board 50 is fixedly connected to the frame 32, and the circuit board 50 is electrically connected to the voice coil 22. The speaker of the present embodiment realizes the conduction of the internal and external circuits through the circuit board 50, and the audio signal current outside the speaker is transferred to the inside of the speaker through the circuit board 50.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (11)
1. The vibrating diaphragm is characterized by comprising a metal ball top, a nonmetallic film part and a flexible suspension edge; the non-metal film part is adhered to the outer periphery of the metal dome, the outer periphery of the non-metal film part extends towards the direction which is the same as the metal dome and gradually diffuses towards the direction which is far away from the metal dome, and the flexible hanging edge is adhered to the outer periphery of the non-metal film part;
The nonmetal membrane part comprises an annular flat section and a horn-shaped cone section, wherein the annular flat section is formed by extending the outer periphery of the metal dome in the horizontal direction, and the horn-shaped cone section is formed by turning the outer periphery of the annular flat section towards the protruding direction of the metal dome and gradually diffusing in the direction away from the metal dome.
2. The diaphragm of claim 1, wherein the maximum height of the outer periphery of the flared cone section is greater than the maximum height of the metal dome.
3. The diaphragm of claim 1 wherein the upper and lower surfaces of the annular flat section are regularly flat and parallel to a horizontal plane.
4. The diaphragm of claim 1, wherein the cross-sections of the metal dome and the non-metal membrane portion are W-shaped.
5. The diaphragm of claim 1, wherein a middle portion of the flexible hanging edge forms an arch structure toward a convex direction of the metal dome.
6. The diaphragm of any one of claims 1-5 wherein the metal dome is made of one or more of the following materials: magnesium, aluminum, beryllium, titanium.
7. The diaphragm of any one of claims 1 to 5, wherein the nonmetallic film portion is made of a paper, a mixture of paper and mica, a mixture of paper and a blend, or a bio-diaphragm material.
8. The diaphragm of any one of claims 1-5, wherein the flexible suspension edge is made of PU, silicone, plastic, resin, silk, or cloth.
9. The diaphragm of any one of claims 1-5 wherein the metal dome has a thickness of 6 μm to 120 μm.
10. The diaphragm of any of claims 1-5 wherein the metal dome and the non-metal film portion are bonded by a positive bonding process or a negative bonding process.
11. A loudspeaker comprising a diaphragm as claimed in any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402942.0A CN110418253B (en) | 2018-04-28 | 2018-04-28 | Diaphragm and speaker |
| US16/247,356 US10667058B2 (en) | 2018-04-28 | 2019-01-14 | Diaphragm and speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402942.0A CN110418253B (en) | 2018-04-28 | 2018-04-28 | Diaphragm and speaker |
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| Publication Number | Publication Date |
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| CN110418253A CN110418253A (en) | 2019-11-05 |
| CN110418253B true CN110418253B (en) | 2024-11-15 |
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| CN201810402942.0A Active CN110418253B (en) | 2018-04-28 | 2018-04-28 | Diaphragm and speaker |
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| CN112235698B (en) * | 2020-10-27 | 2025-03-11 | 美特科技(苏州)有限公司 | Vibration plate, speaker module and electronic device having the same |
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| CN1306383A (en) * | 2001-01-23 | 2001-08-01 | 朱树同 | Loudspeaker with moving coil array |
| CN101601308A (en) * | 2007-01-12 | 2009-12-09 | 萨姆森科技公司 | Speaker Motors and Speakers |
| CN106899918A (en) * | 2015-12-17 | 2017-06-27 | 安桥株式会社 | Loudspeaker vibration plate and its manufacture method and the loudspeaker including the loudspeaker vibration plate |
| CN208258064U (en) * | 2018-04-28 | 2018-12-18 | 深圳市冠旭电子股份有限公司 | Vibrating diaphragm and loudspeaker |
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