CN111711891B - Dome, loudspeaker monomer and sound generating mechanism - Google Patents
Dome, loudspeaker monomer and sound generating mechanism Download PDFInfo
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- CN111711891B CN111711891B CN202010600342.2A CN202010600342A CN111711891B CN 111711891 B CN111711891 B CN 111711891B CN 202010600342 A CN202010600342 A CN 202010600342A CN 111711891 B CN111711891 B CN 111711891B
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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
- H04R7/122—Non-planar diaphragms or cones comprising a plurality of sections or layers
- H04R7/125—Non-planar diaphragms or cones comprising a plurality of sections or layers comprising a plurality of superposed layers in contact
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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
- H04R7/127—Non-planar diaphragms or cones dome-shaped
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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
- H04R9/025—Magnetic circuit
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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
- H04R9/04—Construction, mounting, or centering of coil
- H04R9/045—Mounting
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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
- H04R2307/00—Details 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
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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
- H04R2307/00—Details 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
- H04R2307/025—Diaphragms comprising polymeric materials
Abstract
The invention discloses a dome, a loudspeaker monomer and a sound generating device, wherein the dome is arranged on a vibrating diaphragm of a loudspeaker, the dome comprises a sapphire layer and a base material layer, the sapphire layer and the base material layer are mutually stacked, one of the sapphire layer and the base material layer is used for being combined with one side of the vibrating diaphragm, and at least one through hole is formed in the sapphire layer. The dome of the invention can improve the acoustic performance and quality of the loudspeaker.
Description
Technical Field
The invention relates to the technical field of acoustics, in particular to a dome, a loudspeaker single body and a sound generating device.
Background
With the advent of the 5G mobile phone era, higher requirements are put on the material performance of mobile terminals, such as mobile phones. Due to the high frequency of the 5G mobile phone, the terminal antenna is sensitive to peripheral metal and carbide materials, and particularly, the metal material has serious interference on 5G signals. The dielectric constant of the material around the 5G mobile phone antenna affects the bandwidth of the antenna, generally, the higher the dielectric constant is, the stronger the constraint on the electromagnetic field is, and the bandwidth is correspondingly narrowed, so the lower the dielectric constant of the medium around the antenna is, the better the bandwidth is.
In the traditional design, the ball top of the sound generating device is usually made of metal materials, and the metal materials easily interfere with 5G signals due to the fact that the distance between the sound generating device and an antenna in a mobile phone is very short.
The above is only for the purpose of assisting understanding of the technical solutions of the present invention, and does not represent an admission that the above is the prior art.
Disclosure of Invention
The invention mainly aims to provide a dome, and aims to solve the problem that the conventional sound generating device generates interference on an antenna of a 5G mobile terminal.
In order to achieve the above object, the present invention provides a diaphragm mounted on a dome of a speaker, wherein the dome includes a sapphire layer and a substrate layer, the sapphire layer and the substrate layer are stacked on each other, one of the sapphire layer and the substrate layer is used for being combined with one side of the diaphragm, and at least one through hole is formed in the sapphire layer.
In one embodiment, the dome comprises at least two sapphire layers, the through holes are formed in the sapphire layers, and the base material layer is arranged between two adjacent sapphire layers to cover the through holes in the sapphire layers.
In one embodiment, the dome comprises at least two substrate layers, a sapphire layer is arranged between two adjacent substrate layers, and the substrate layers on two sides of the sapphire layer are made of the same or different materials.
In one embodiment, the dome includes a single sapphire layer and a single substrate layer stacked on each other, and the sapphire layer side or the substrate layer side is disposed near the diaphragm.
In one embodiment, a ratio of an open area of the through hole to an area of the sapphire layer is less than or equal to 0.5.
In one embodiment, the sapphire layer is perforated in a manner including laser, die or abrasive perforation to form the through-holes; the shape of the through hole comprises a circle, an ellipse, a polygon or a line.
In one embodiment, the sapphire layer and the substrate layer are bonded to each other.
In one embodiment, the shape and size of the substrate layer are adapted to the shape and size of the sapphire layer.
In one embodiment, the sapphire layer has a thickness greater than or equal to 0.02mm and less than or equal to 0.5 mm; and/or the thickness of the base material layer is greater than or equal to 0.02mm and less than or equal to 0.5 mm.
In one embodiment, the substrate layer is an aluminum foil, engineering plastic or thermoplastic elastomer;
the engineering plastic comprises one or more of polyether-ether-ketone, polyethylene naphthalate, polyethylene terephthalate, polyetherimide, polyimide, polymethacrylimide and aluminum foil;
the thermoplastic elastomer comprises one or more of polyurethane elastomer, polyester elastomer, polyamide elastomer, dynamic vulcanization thermoplastic elastomer, organic silicon elastomer, olefin elastomer and styrene elastomer.
The invention also provides a loudspeaker monomer, which comprises a vibration system, wherein the vibration system comprises a vibrating diaphragm and a ball top, and the ball top is arranged on the vibrating diaphragm;
the dome includes sapphire layer and substrate layer, the sapphire layer with the substrate layer is range upon range of the setting each other, the sapphire layer with one of them of substrate layer be used for with one side of vibrating diaphragm combines, at least one through-hole has been seted up on the sapphire layer.
The invention also provides a sound production device, which comprises a shell and a loudspeaker single body, wherein the loudspeaker single body comprises a vibration system, the vibration system comprises a vibration diaphragm and a ball top, and the ball top is arranged on the vibration diaphragm;
the dome comprises a sapphire layer and a substrate layer, the sapphire layer and the substrate layer are mutually stacked, one of the sapphire layer and the substrate layer is used for being combined with one side of the vibrating diaphragm, and at least one through hole is formed in the sapphire layer;
the loudspeaker unit is accommodated in the shell, the top of the loudspeaker unit and the shell enclose to form a front sound cavity, and the sound generating device is further provided with a sound outlet channel communicated with the front sound cavity and the outside.
According to the invention, the ball top comprises the sapphire layer and the substrate layer which are arranged in a laminated manner, so that at least one through hole is formed in the sapphire layer. The sapphire layer has the advantages of high strength, high hardness, high temperature resistance, stable chemical property and the like, and can eliminate the interference on the antenna of a terminal such as a 5G mobile phone and the like when being used as a part of a loudspeaker compared with the traditional metal material. Meanwhile, the high modulus of the sapphire layer is beneficial to improving the high-frequency performance of the loudspeaker, so that the quality of the loudspeaker is better. And set up the through-hole on the sapphire layer, can reduce the area density under the condition that does not influence sapphire layer intensity, reduce the vibration quality, improve the sensitivity and the frequency response of vibration subassembly. Simultaneously, make substrate layer 3 and sapphire layer range upon range of each other and shelter from the through-hole, compare in sheltering from the through-hole through two-layer sapphire layer range upon range of each other, can alleviate whole weight, and make the pliability of dome better to improve the well low frequency performance of speaker, and then make the acoustics quality of speaker more excellent. In addition, the cost of the whole loudspeaker can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of a dome of the present invention;
FIG. 2 is a schematic diagram of another embodiment of a dome and a diaphragm according to the present invention;
FIG. 3 is a schematic structural diagram of a speaker unit according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a sound generating device according to an embodiment of the present invention;
fig. 5 is an exploded view of the sound generator of fig. 4.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture, and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The invention provides a dome, which is applied to a loudspeaker.
In the embodiment of the present invention, as shown in fig. 1 to 3, the dome 110 is mounted on a diaphragm 120 of a speaker, wherein the dome 110 includes a sapphire layer 111 and a substrate layer 113, the sapphire layer 111 and the substrate layer 113 are stacked on each other, one of the sapphire layer 111 and the substrate layer 113 is used for being combined with one side of the diaphragm 120, and the sapphire layer 111 is provided with at least one through hole 112.
In this embodiment, the domeThe shape of 110 may be circular, oval, rectangular, racetrack, etc. The dome 110 may be attached to the diaphragm 120 of the speaker by means of bonding. Specifically, the sapphire layer 111 may be connected to the diaphragm 120, or the substrate layer 113 may be connected to the diaphragm 120. The dome 110 is required to be rigid and light in weight for better tuning of acoustic performance. The sapphire layer 111 is made of single crystal alumina and has a molecular formula of Al2O3Formed by combining three oxygen atoms and two aluminum atoms in a covalent bond form, the crystal structure of the sapphire substrate is a hexagonal lattice structure, and the density of the sapphire layer 111 is 3.95-4.1g/cm3The Young's modulus was 380GPa, the mode hardness was 9, the melting point was 2045 ℃, the boiling point was 3000 ℃ and the dielectric constant was 11.5 (/ c),9.3 (. DELTA.c). Specifically, the sapphire layer 111 is a pure alumina crystal layer (crystal is transparent and colorless), an alumina crystal layer containing titanium ions and iron ions (crystal is blue), an alumina crystal layer containing chromium ions (crystal is red), or an alumina crystal layer containing nickel ions (crystal is yellow). Thus, different sapphire layers 111 can be selected according to the use requirements on the premise of not influencing the use of the loudspeaker.
The sapphire layer 111 has the advantages of high strength, high hardness, high temperature resistance, stable chemical properties and the like, and can eliminate the interference on the antenna of a terminal such as a 5G mobile phone and the like when being used as a part of a loudspeaker compared with the traditional metal material. The sapphire layer 111 has a low dielectric constant, weak field constraint, a relatively wide bandwidth, and little or no influence on the antenna. While the high modulus of the sapphire layer 111 helps to improve the high frequency performance of the speaker. Due to the characteristics of the sapphire material, the sapphire layer 111 of the dome 110 can be thinner and harder than other metals, so that the quality of the speaker is better.
The substrate layer 113 may be engineering plastic, and the material selected from the engineering plastic may be: at least one of polyether ether ketone (PEEK), polyethylene naphthalate (PEN), polyethylene terephthalate (PET), Polyetherimide (PEI), Polyimide (PI), and Polymethacrylimide (PMI). The substrate layer 113 may also be an elastomer, optionally a thermoplastic elastomer, which may be one or more of a polyurethane elastomer, a polyester elastomer, a polyamide elastomer, a dynamically vulcanized thermoplastic elastomer, a silicone elastomer, an olefinic elastomer, and a styrenic elastomer. The base layer 113 may be an aluminum foil or the like.
Actually, the sapphire layer 111 and the substrate layer 113 may be bonded by glue. For example, the connection is made by ultraviolet light curing glue (UV glue), so the connection mode is simple, stable and reliable. It is understood that the sapphire layer 111 and the base material layer 113 are laminated to each other means laminated in the thickness direction thereof. The axial direction of the through-hole 112 coincides with the thickness direction of the sapphire layer 111. The number of vias 112 on sapphire layer 111 may be one, two, three, four, five, multiple, etc. When the number of the through holes 112 on the sapphire layer 111 is small, it is preferable to open the through holes 112 at a position near the edge of the sapphire layer 111. Since the diaphragm 120 vibrates with a large central vibration amplitude and a small edge vibration amplitude, the dome 110 is usually attached to the central portion 121 of the diaphragm 120, so that the through hole 112 is opened near the edge of the sapphire layer 111 in order to reduce the influence of the through hole 112 on the diaphragm 120. The sizes and the numbers of the through holes 112 are inversely proportional, that is, the larger the number of the through holes 112 is, the smaller the size of the through holes 112 is, and the smaller the number of the through holes 112 is, the larger the size of the through holes 112 can be designed, and the sizes of the through holes 112 may be the same or different. The number and size of the through holes 112 can be selected and designed according to actual requirements, and are not limited in detail.
The sapphire layer 111 is provided with a through hole 112, and the through hole 112 may be formed by performing a punching process such as laser punching, die punching, or grinding. Specifically, the shape of the through-hole 112 (i.e., the through-hole) may be a polygon such as a triangle, a rectangle, etc., a circle, an ellipse, a racetrack shape, or a linear shape (i.e., a bar shape), etc. The plurality of through holes 112 may be identical in shape or different in shape. In general, in order to facilitate processing, the stress of the sapphire layer 111 is reduced so that the shape of the via hole 112 is circular. Through set up through-hole 112 on sapphire layer 111, can reduce the area density under the condition that does not influence sapphire layer 111 intensity, reduce the vibration quality, improve the sensitivity and the frequency response of vibration subassembly, and then promote speaker acoustic properties and quality. Make substrate layer 113 and sapphire layer 111 range upon range of setting, then substrate layer 113 can shelter from the through-hole 112 on the sapphire layer 111, avoids appearing the gas leakage phenomenon. And the base material layer 113 and the sapphire layer 111 are mutually stacked to shield the through hole 112, compared with the mode that the through hole 112 is mutually stacked and shielded by two sapphire layers 111, the whole weight can be reduced, the flexibility of the dome 110 is better, the middle-low frequency performance of the loudspeaker is improved, and the acoustic quality of the loudspeaker is better. In addition, the cost of the whole loudspeaker can be reduced.
According to the invention, the dome 110 comprises the sapphire layer 111 and the base material layer 113 which are stacked, so that at least one through hole 112 is formed in the sapphire layer 111. The sapphire layer 111 has the advantages of high strength, high hardness, high temperature resistance, stable chemical properties and the like, and can eliminate the interference on the antenna of a terminal such as a 5G mobile phone and the like when being used as a part of a loudspeaker compared with the traditional metal material. Meanwhile, the high modulus of the sapphire layer 111 is beneficial to improving the high-frequency performance of the loudspeaker, so that the quality of the loudspeaker is better. And set up through-hole 112 on sapphire layer 111, can reduce the area density under the condition that does not influence sapphire layer 111 intensity, reduce the vibration quality, improve the sensitivity and the frequency response of vibration subassembly. Meanwhile, the base material layer 113 and the sapphire layer 111 are mutually stacked to shield the through hole 112, compared with the mode that the through hole 112 is mutually stacked and shielded by the two sapphire layers 111, the whole weight can be reduced, the flexibility of the dome 110 is better, the middle-low frequency performance of the loudspeaker is improved, and the acoustic quality of the loudspeaker is better. In addition, the cost of the whole loudspeaker can be reduced.
In one embodiment, as shown in fig. 1 to 3, the dome 110 includes at least two sapphire layers 111, at least two sapphire layers 111 have through holes 112, and a base material layer 113 is disposed between two adjacent sapphire layers 111 to cover the through holes 112 on the sapphire layers 111.
In this embodiment, by clamping the substrate layer 113 between the two sapphire layers 111, the through holes 112 on the two sapphire layers 111 can be shielded only by one substrate layer 113, so that the number of the through holes 112 on the single sapphire layer 111 can be increased, and the overall weight is lighter. Two sapphire layers 111 are arranged in a laminated mode, and a plurality of through holes 112 are formed in the single sapphire layer 111, so that the rigidity of the dome 110 can be effectively enhanced under the condition that the overall mass of the dome 110 is light, the high-frequency performance of the loudspeaker is further improved, and the acoustic quality of the loudspeaker is better. In other embodiments, the dome 110 may further include at least two substrate layers 113, a sapphire layer 111 is sandwiched between two adjacent substrate layers 113, and the materials of the substrate layers 113 on two sides of the sapphire layer 111 may be the same or different. The effect of covering the through-hole 112 on the sapphire layer 111 with the base material layer 113 is better.
In another embodiment, the dome 110 includes a single sapphire layer 111 and a single substrate layer 113 stacked on each other, and the sapphire layer 111 side or the substrate layer 113 side is disposed near the diaphragm 120. Thus, the through-holes in the sapphire layer 111 can be blocked only by providing the single-layer base material layer 113. And the structure of individual layer substrate layer 113 plus individual layer sapphire layer 111 is simpler, when can eliminating the interference to the antenna at terminals such as 5G cell-phones, compare in the structure that two-layer sapphire layer 111 sheltered from each other, can improve the high frequency performance and the well low frequency performance of speaker simultaneously, and the quality of whole dome is lighter, further improves the sensitivity and the frequency response of vibration subassembly, and then promotes speaker acoustic properties and quality.
In one embodiment, the ratio of the open area of the via 112 to the area of the sapphire layer 111 is less than or equal to 0.5. Specifically, the ratio of the area of the via hole 112 to the area of the sapphire layer 111 may be 0.1, 0.2, 0.25, 0.3, 0.45, 0.5, or the like. When the ratio of the area of the through hole 112 to the area of the sapphire layer 111 is greater than 0.5, the aperture area of the entire sapphire layer 111 is made too large, which may affect the rigidity of the sapphire layer 111 and thus the acoustic performance of the speaker. By making the ratio of the area of the through hole 112 to the area of the sapphire layer 111 less than or equal to 0.5, the mass of the sapphire layer 111 is reduced as much as possible while the rigidity of the sapphire layer 111 is not affected, so that the entire dome 110 is lighter in mass and has a better effect of improving the acoustic quality of the speaker.
Specifically, as shown in fig. 1 to 3, the shape and size of the base material layer 113 are adapted to those of the sapphire layer 111. So for substrate layer 113 can cover sapphire layer 111 completely, and then makes the sealed effect of whole speaker better, and acoustic performance is better.
In one embodiment, the thickness of the sapphire layer 111 is greater than or equal to 0.02mm and less than or equal to 0.5 mm; and/or the thickness of the substrate layer 113 is greater than or equal to 0.02mm and less than or equal to 0.5 mm.
In this embodiment, when the thickness of the sapphire layer 111 is less than 0.02mm, the thickness of the sapphire layer 111 is too thin, so that the processing process is more difficult and the processing cost is high. When the thickness of the sapphire layer 111 is greater than 0.5mm, the thickness of the sapphire layer 111 is too thick, which wastes material on one hand, and on the other hand, the mass of the sapphire layer 111 is heavy, thereby affecting the acoustic performance of the speaker. By enabling the thickness of the sapphire layer 111 to be larger than or equal to 0.02mm and smaller than or equal to 0.5mm, the rigidity of the sapphire layer 111 meets the requirement and the acoustic quality of the loudspeaker can be optimally improved under the conditions of simple processing technology and low cost. If the thickness of the substrate layer 113 is smaller than 0.02mm, the thickness of the substrate layer 113 is too small, so that when the diaphragm 120 vibrates, the portion of the substrate layer 113 covering the through hole 112 also vibrates, and the sound quality of the speaker is affected. If the thickness of the substrate layer 113 is larger than 0.5mm, the thickness of the substrate layer 113 is too thick, which wastes materials on one hand, and on the other hand, causes the substrate layer 113 to have a heavy mass, thereby affecting the acoustic performance of the speaker. Through making the thickness of substrate layer 113 be greater than or equal to 0.02mm, and be less than or equal to 0.5mm, then when can effectively seal through-hole 112, alleviate whole quality, and can not influence the sound quality, and then effectively promote the acoustic performance of speaker product.
In one embodiment, the material of the substrate layer 113 includes one or more of polyetheretherketone, polyethylene naphthalate, polyethylene terephthalate, polyetherimide, polyimide, polymethacrylimide, and aluminum foil. Through making the material of substrate layer 113 be engineering plastics and aluminium foil, then compare in the elastomer for substrate layer 113's hardness is higher, thereby substrate layer 113 is when the through-hole 112 that covers sapphire layer 111, and resonance can not take place for the part of corresponding through-hole 112, and then can improve the sound quality, guarantees the whole acoustic performance of speaker product.
Referring to fig. 3 and 5, the speaker unit 100 further includes a vibration system, the vibration system includes a diaphragm 120 and a dome 110, and the specific structure of the dome 110 refers to the above embodiments, and since the speaker unit 100 adopts all technical solutions of all the above embodiments, the speaker unit at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
Wherein, this speaker monomer 100 includes auxiliary system, vibration system and magnetic circuit, and auxiliary system is including being used for acceping fixed vibration system and magnetic circuit's shell, and auxiliary system still includes the magnetic yoke, and the magnetic yoke is fixed in the shell and deviates from one side of vibrating diaphragm 120, and vibration system includes vibrating diaphragm 120, dome 110 and fixes the voice coil loudspeaker voice coil in vibrating diaphragm 120 one side, and magnetic circuit includes magnet, and one side that magnet is close to vibrating diaphragm 120 is provided with the magnetic conduction board. The magnetic circuit system has a magnetic gap, the voice coil is disposed in the magnetic gap, and the voice coil reciprocates up and down in the magnetic field after being supplied with the alternating current, so as to drive the diaphragm 120 to vibrate and sound. In some embodiments, no auxiliary system may be provided. The material of the diaphragm 120 is selected to be a flexible diaphragm 120, which can improve the low frequency performance, and because of its light weight and small motion inertia, the sound clarity and detail processing are very good, the diaphragm 120 may be composed of one or more of polyetherimide, polyurethane, polyvinyl chloride, a polyether-ether-ketone and polyurethane thermal composite film, polyether-ether-ketone, and silica gel, or other high polymer material diaphragms 120 or biological diaphragms 120 may be selected.
Specifically, the diaphragm 120 includes a central portion 121 and a corrugated portion 122 connected to an outer periphery of the central portion 121, and the dome 110 is adhered to the central portion 121. The central portion 121 of the diaphragm 120 may be provided with a material, that is, the middle portion of the central portion 121 of the diaphragm 120 is hollowed out, and only an edge portion is left to be connected with the loop portion 122, so that the dome 110 is covered and bonded on the edge portion of the central portion 121 at this time. The sapphire layer 111 or the substrate layer 113 may be bonded to the body of the diaphragm 120 by glue. Therefore, the mass of the vibration system can be reduced, the overall sensitivity and frequency response are improved, and the acoustic performance of the whole loudspeaker product is further improved. The bending ring portion 122 is a concave or convex structure, and the diaphragm 120 is further provided with a fixing portion fixed with the housing at the periphery of the bending ring portion 122.
As shown in fig. 4 and 5, the sound generating apparatus of the present invention further includes a housing 200 and a speaker unit 100, the speaker unit 100 is accommodated in the housing 200, the dome 110 of the speaker unit 100 and the housing 200 enclose a front sound cavity 210, and the sound generating apparatus further includes a sound outlet channel 220 communicating the front sound cavity 210 with the outside. Since the sound generating device adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
The housing 200 may be made of plastic, and the injection molding method is used to directly inject the plastic into a desired shape in a mold, such that the housing 200 has low cost, high efficiency and simple process, and the housing 200 may also be made of other materials, which is not limited in this embodiment. The speaker unit 100 is fixed in the housing 200, the speaker unit 100 includes a diaphragm 120, the diaphragm 120 divides a cavity of the sound generating apparatus into a front sound cavity 210 and a rear sound cavity, and the front sound cavity 210 is communicated with the outside of the sound generating apparatus through a sound outlet channel 220. The vibrating diaphragm 120 vibrates to drive the air in the front acoustic cavity 210 to vibrate, and the sound waves are transmitted to the outside of the acoustic device through the sound outlet channel 220, and the rear acoustic cavity is a closed structure and is only communicated with the outside through a damping hole.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. The dome is characterized by comprising a sapphire layer and a substrate layer, wherein the sapphire layer and the substrate layer are mutually stacked and are used for being combined with one side of the diaphragm, and at least one through hole is formed in the sapphire layer;
the thickness of the sapphire layer is greater than or equal to 0.02mm and less than or equal to 0.5 mm; and the number of the first and second electrodes,
the ratio of the area of the opening of the through hole to the area of the sapphire layer is less than or equal to 0.5, and the through hole in the sapphire layer is shielded by the base material layer.
2. The dome of claim 1 wherein said dome comprises at least two of said sapphire layers, said through holes being defined in said at least two sapphire layers, and a layer of said substrate material being disposed intermediate two adjacent sapphire layers to cover said through holes in said sapphire layers.
3. The dome of claim 1 wherein said dome comprises at least two said substrate layers, a sapphire layer disposed between two adjacent said substrate layers, said sapphire layers being of the same or different materials on either side of said substrate layers.
4. The dome of claim 1, wherein the dome comprises a single layer of the sapphire layer and a single layer of the substrate layer which are laminated to each other, and the sapphire layer side or the substrate layer side is provided near the diaphragm.
5. The dome of claim 1 wherein the sapphire layer is perforated to form the through-holes by means including laser, die or abrasive perforation; the shape of the through hole comprises a circle, an ellipse, a polygon or a line.
6. The dome of any one of claims 1-5 wherein the sapphire layer is adhesively bonded to the substrate layer by a glue layer.
7. The dome of claim 1 wherein the shape and size of the substrate layer is adapted to the shape and size of the sapphire layer.
8. The dome of claim 1 wherein the thickness of the substrate layer is greater than or equal to 0.02mm and less than or equal to 0.5 mm.
9. The dome of claim 1 wherein the substrate layer is aluminum foil, engineering plastic, or thermoplastic elastomer;
the engineering plastic comprises one or more of polyether-ether-ketone, polyethylene naphthalate, polyethylene terephthalate, polyetherimide, polyimide, polymethacrylimide and aluminum foil;
the thermoplastic elastomer comprises one or more of polyurethane elastomer, polyester elastomer, polyamide elastomer, dynamic vulcanization thermoplastic elastomer, organic silicon elastomer, olefin elastomer and styrene elastomer.
10. A loudspeaker unit comprising a vibration system, the vibration system comprising a diaphragm and a dome as claimed in any one of claims 1 to 9, the dome being mounted to the diaphragm.
11. The speaker cell as claimed in claim 10, wherein the diaphragm includes a central portion and a folded portion connecting an outer periphery of the central portion, and the dome is bonded to the central portion.
12. A sound generating device, comprising a housing and the single speaker unit as claimed in claim 10 or 11, wherein the single speaker unit is accommodated in the housing, a dome of the single speaker unit and the housing enclose a front sound cavity, and the sound generating device is further provided with a sound outlet channel for communicating the front sound cavity and the outside.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010600342.2A CN111711891B (en) | 2020-06-24 | 2020-06-24 | Dome, loudspeaker monomer and sound generating mechanism |
| PCT/CN2020/127319 WO2021258607A1 (en) | 2020-06-24 | 2020-11-07 | Dome, loudspeaker unit, and sound generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010600342.2A CN111711891B (en) | 2020-06-24 | 2020-06-24 | Dome, loudspeaker monomer and sound generating mechanism |
Publications (2)
| Publication Number | Publication Date |
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| CN111711891A CN111711891A (en) | 2020-09-25 |
| CN111711891B true CN111711891B (en) | 2022-06-07 |
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| CN202010600342.2A Active CN111711891B (en) | 2020-06-24 | 2020-06-24 | Dome, loudspeaker monomer and sound generating mechanism |
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| Country | Link |
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| CN (1) | CN111711891B (en) |
| WO (1) | WO2021258607A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711891B (en) * | 2020-06-24 | 2022-06-07 | 歌尔股份有限公司 | Dome, loudspeaker monomer and sound generating mechanism |
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|---|---|---|---|---|
| WO2007043837A1 (en) * | 2005-10-14 | 2007-04-19 | Kh Chemicals Co., Ltd. | Acoustic diaphragm and speakers having the same |
| CN101238754A (en) * | 2005-10-18 | 2008-08-06 | 株式会社日立制作所 | Ultrasonic transducer, ultrasonic probe and ultrasonic imaging device |
| CN107889034A (en) * | 2017-10-30 | 2018-04-06 | 比特联创(控股)有限公司 | Loudspeaker and the shaking assembly suitable for loudspeaker |
| CN207321533U (en) * | 2017-02-20 | 2018-05-04 | 歌尔科技有限公司 | Binder course for the diaphragm of loudspeaker and the diaphragm of loudspeaker comprising the binder course |
| CN207968945U (en) * | 2018-02-11 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | Carbon fiber top dome and loud speaker |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100767260B1 (en) * | 2005-10-31 | 2007-10-17 | (주)케이에이치 케미컬 | Acoustic Diaphragm And Speaker Having The Same |
| CN103067829A (en) * | 2012-12-25 | 2013-04-24 | 苏州恒听电子有限公司 | Vibrating diaphragm applied to medium-high frequency sound production unit and preparation method thereof |
| CN203027470U (en) * | 2012-12-25 | 2013-06-26 | 苏州恒听电子有限公司 | Vibrating diaphragm applicable to medium-high frequency sound production unit |
| JP5865408B2 (en) * | 2014-02-26 | 2016-02-17 | 京セラ株式会社 | Electronics |
| CN210183376U (en) * | 2019-09-17 | 2020-03-24 | 歌尔科技有限公司 | Acoustic device and electronic apparatus |
| CN111711891B (en) * | 2020-06-24 | 2022-06-07 | 歌尔股份有限公司 | Dome, loudspeaker monomer and sound generating mechanism |
-
2020
- 2020-06-24 CN CN202010600342.2A patent/CN111711891B/en active Active
- 2020-11-07 WO PCT/CN2020/127319 patent/WO2021258607A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007043837A1 (en) * | 2005-10-14 | 2007-04-19 | Kh Chemicals Co., Ltd. | Acoustic diaphragm and speakers having the same |
| CN101238754A (en) * | 2005-10-18 | 2008-08-06 | 株式会社日立制作所 | Ultrasonic transducer, ultrasonic probe and ultrasonic imaging device |
| CN207321533U (en) * | 2017-02-20 | 2018-05-04 | 歌尔科技有限公司 | Binder course for the diaphragm of loudspeaker and the diaphragm of loudspeaker comprising the binder course |
| CN107889034A (en) * | 2017-10-30 | 2018-04-06 | 比特联创(控股)有限公司 | Loudspeaker and the shaking assembly suitable for loudspeaker |
| CN207968945U (en) * | 2018-02-11 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | Carbon fiber top dome and loud speaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111711891A (en) | 2020-09-25 |
| WO2021258607A1 (en) | 2021-12-30 |
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