WO2022000917A1 - 发声器件及电子设备 - Google Patents
发声器件及电子设备 Download PDFInfo
- Publication number
- WO2022000917A1 WO2022000917A1 PCT/CN2020/127144 CN2020127144W WO2022000917A1 WO 2022000917 A1 WO2022000917 A1 WO 2022000917A1 CN 2020127144 W CN2020127144 W CN 2020127144W WO 2022000917 A1 WO2022000917 A1 WO 2022000917A1
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- WIPO (PCT)
- Prior art keywords
- dome
- diaphragm
- rubber
- sound
- voice coil
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/022—Cooling arrangements
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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
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
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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
- H04R2307/025—Diaphragms comprising polymeric materials
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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
- H04R2307/027—Diaphragms comprising metallic materials
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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
- H04R2307/029—Diaphragms comprising fibres
Definitions
- the invention relates to the technical field of electro-acoustics, in particular to a sound-generating device and electronic equipment.
- the diaphragm of a loudspeaker is generally made of polymer materials, and the current development trend is to use a rubber diaphragm as the diaphragm. If glue is used to bond the rubber membrane and the dome, the rubber membrane and the voice coil components in the traditional way, the rubber membrane and the dome need to be bonded to the diaphragm by double-sided tape or glue, and then set on the other side of the dome. The glue is then bonded with the voice coil assembly to form a vibration system.
- the main purpose of the present invention is to provide a sound-emitting device, which aims to ensure the connection effect between the diaphragm and the dome, improve the reliability of the loudspeaker, and ensure the quality of the loudspeaker.
- the sound-emitting device proposed by the present invention includes a vibration system and a magnetic circuit system, the magnetic circuit system is provided with a magnetic gap, and the vibration system includes:
- the material of the diaphragm is rubber
- the center of the diaphragm is integrally formed with at least part of the composite layer
- the voice coil assembly is connected to the side of the composite layer away from the diaphragm, and the voice coil assembly is movably arranged in the magnetic gap.
- the composite layer includes a first spherical top and a second spherical top that are attached to each other, the voice coil assembly is connected to the first spherical top, and the center of the diaphragm is connected to the first spherical top.
- the second dome is integrally formed, and the center of the first dome and the center of the second dome are concentrically arranged;
- the composite layer includes a first dome and a second dome protruding from the surface of the first dome, the first dome and the second dome are integral structures, and the diaphragm is injection-molded / thermocompression bonded to the top and side surfaces of the second dome.
- the area of the first dome is larger than the area of the second dome, the voice coil assembly is projected on the first dome to form a first projection area, and the first The outer contour of the projection area includes the outer contour of the second dome;
- the first spherical top and the second spherical top are bonded and fixed.
- the diaphragm is liquid silicone rubber or liquid nitrile rubber, and the diaphragm and the second dome are integrally formed by injection molding.
- the diaphragm is solid rubber
- the material of the rubber is solid silicone rubber, ethylene acrylate rubber, acrylate rubber, hydrogenated nitrile rubber, solid nitrile rubber or EPDM One of rubbers; or, the rubber is a mixture of at least two rubbers in solid silicone rubber, ethylene acrylate rubber, acrylate rubber, hydrogenated nitrile rubber, solid nitrile rubber or EPDM rubber;
- the vibrating membrane is integrated with the second spherical top by thermocompression.
- the diaphragm includes a center portion located in a middle position, a ring portion located outside the center portion, and a fixing portion connected to the ring portion, and the center portion is connected to the second ring portion.
- the dome is integrally formed;
- the diaphragm has a vibration direction, and at least part of the ring portion is projected on the first spherical top along the vibration direction to form a second projection area, and at least part of the outer contour of the second projection area is in line with the first sphere. Top overlap.
- the ring portion is projected on a horizontal plane perpendicular to the vibration direction to form a third projection area
- the diaphragm is projected on a horizontal plane perpendicular to the vibration direction to form a fourth projection area
- the relationship between the area S3 of the third projection area and the area S4 of the fourth projection area is: 0.7 ⁇ S3/S4 ⁇ 0.9.
- the value range of the width w of the folding ring portion is: 1mm ⁇ w ⁇ 2mm;
- the value range of the height h of the folding ring portion is: 0.9mm ⁇ h ⁇ 1.3mm.
- the central portion is a plate-like structure
- the first dome and/or the second dome is a plate-like structure.
- the central portion is provided with an extension section, and the extension section extends from the central portion to the first dome and is connected to the side surface of the second dome.
- the extension section is arranged around the periphery of the second spherical top; the bottom surface of the first spherical top is integrated with the second spherical top.
- the height of the fixing portion in the vibration direction is lower than the height of the central portion.
- the fixing portion includes a fixing body and a fixing groove provided on the fixing body, the fixing body is connected with the ring portion, and the fixing groove is used for fixing the diaphragm .
- the fixing portion further includes a limiting segment, one side of the limiting segment is connected to the groove wall of the fixing slot, and the other side extends toward the notch of the fixing slot.
- the material of the first dome and the second dome includes a rigid material; the rigid material includes at least one of carbon fiber material, metal material or foamed metal.
- the present invention also provides an electronic device, including a sound-emitting device, the sound-emitting device includes a vibration system and a magnetic circuit system, the magnetic circuit system is provided with a magnetic gap, and the vibration system includes:
- the material of the diaphragm is rubber
- the center of the diaphragm is integrally formed with at least part of the composite layer
- the voice coil assembly is connected to the side of the composite layer away from the diaphragm, and the voice coil assembly is movably arranged in the magnetic gap.
- the sound-emitting device of the present invention is provided with a vibration system and a magnetic circuit system, and a magnetic gap is set in the magnetic circuit system, and then a vibrating membrane made of rubber is set in the vibration system, and the center of the vibrating membrane is integrally formed with at least a part of the composite layer. , and then connect the voice coil assembly on the side of the composite layer away from the diaphragm, so that the voice coil assembly can move in the magnetic gap. Since the rubber diaphragm and the composite layer are integrally formed, the injection molding method can be used as a whole, so that the produced rubber diaphragm and the composite layer are integrated as a whole, and there is no need to set glue or other technical means to ensure the rubber diaphragm and the composite layer.
- connection effect can ensure that the two are well fixed. And, by connecting the voice coil assembly on the side of the composite layer away from the vibrating membrane, the vibration can be transmitted through the composite layer to ensure the structural strength of the rubber vibrating membrane. And because rubber has the advantages of good waterproof performance and good elasticity, the diaphragm made of rubber film has good resilience, strong water pressure resistance, no permanent deformation, and can better support the air tightness of mobile smart devices such as mobile phones. And waterproof requirements, and to ensure the sound effect of the sound device. In this way, the technical solution of the present invention can ensure the connection effect between the diaphragm and the dome, improve the reliability of the speaker, and ensure the quality of the speaker.
- FIG. 1 is a schematic structural diagram of an embodiment of a sound-emitting device of the present invention
- FIG. 2 is a cross-sectional view of an embodiment of the arrangement of the connecting section of the sound-emitting device facing the magnetic circuit system according to the present invention
- FIG. 3 is a cross-sectional view of an embodiment where the connecting section of the sound-emitting device of the present invention extends along the vibration direction;
- FIG. 4 is a schematic structural diagram of an embodiment of the vibrating membrane of the sound-emitting device of the present invention.
- the terms "connected”, “fixed” and the like should be understood in a broad sense, for example, “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
- “fixed” may be a fixed connection, a detachable connection, or an integrated; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two elements or an interaction relationship between the two elements, unless otherwise explicitly defined.
- the present invention provides a sound-generating device 100. Please refer to FIGS. 1 to 4.
- the sound-generating device 100 includes a vibration system 10 and a magnetic circuit system 20.
- the magnetic circuit system 20 is provided with With a magnetic gap 21, the vibration system 10 includes:
- the vibrating membrane 11, the material of the vibrating membrane 11 is rubber
- the center of the diaphragm 11 is integrally formed with at least part of the composite layer 12;
- the voice coil assembly 13 is connected to the side of the composite layer 12 away from the diaphragm 11 , and the voice coil assembly 13 is movably disposed in the magnetic gap 21 .
- the position of the vibrating membrane 11 of the sound-emitting device 100 when it is placed upward is taken as a reference to define the upper and lower sides, that is, the side of the vibrating membrane 11 facing away from the magnetic circuit system 20 is up, and the vibrating membrane 11 faces the magnetic One side of the road system 20 is down.
- the vibration direction is the up-down direction.
- the general structure and principle of the vibration system 10 can refer to the existing form. Specifically, the voice coil assembly 13 extends into the magnetic gap 21, and the voice coil body 132 of the voice coil assembly 13 is usually formed by winding metal wires. After the component 13 is connected to the electrical signal, it vibrates up and down under the action of the ampere force in the magnetic field. The movement of the voice coil component 13 drives the diaphragm 11 to vibrate.
- the energy conversion method is electrical energy-mechanical energy-sound energy.
- the vibration system 10 may also include counterweights.
- the form of the magnetic circuit system 20 can also refer to the existing structure.
- the magnetic gap 21 can be formed between the central magnetic steel 22 and the side magnetic steel, or between the central magnetic steel 22 and the side wall of the magnetic conductive basin frame 23. between.
- the plan view shape of the center magnet 22 may be either a circle or a rounded rectangle or the like.
- the central magnetic steel 22 can also be provided with a washer 24 , thereby improving the distribution of magnetic induction lines and improving the motion effect of the voice coil assembly 13 .
- the sound-generating device 100 further includes a casing for accommodating the vibration system 10 and the magnetic circuit system 20 .
- the casing is provided with a sound outlet for sound output at a position corresponding to the vibration system 10 .
- the diaphragm 11 can generate sound in the human auditory sound range, for example, the frequency range is 20-20000 Hz, so that the user can directly receive sound information from the sound-emitting device 100 . It can be understood that, in other embodiments, the diaphragm 11 can also be used to generate sounds in other frequency ranges, for example, the “voice password” in the corresponding range of human hearing, and this sound can be decoded by a machine to realize a corresponding signal transmission.
- the voice coil assembly 13 includes a skeleton 131 and a voice coil body 132 , the voice coil body 132 is wound around the outer side of the skeleton 131 , and the pad is arranged on the voice coil body 132 Outside, the voice coil body 132 is configured to be able to pass electrical signals, the voice coil body 132 is provided with lead wires, the lead wires are overlapped with the pads, the skeleton 131 is connected to the first dome 121 connections.
- the lead can be an enameled wire or a bare wire.
- a certain metal can be exposed on the surface of the enameled wire, and the exposed metal can be bonded to the pad; when fixed by welding, a bare wire can be used for easy fixing.
- Providing the skeleton 131 can facilitate the fixing of the voice coil body 132 and ensure the working stability of the voice coil assembly 13 .
- the sound-emitting device 100 of the present invention is provided with a vibration system 10 and a magnetic circuit system 20, and a magnetic gap 21 is set in the magnetic circuit system 20, and then a vibration membrane 11 made of rubber is set in the vibration system 10, and the center of the vibration membrane 11 is connected to the At least a part of the composite layer 12 is integrally formed and connected, and then the voice coil assembly 13 is connected to the side of the composite layer 12 away from the diaphragm 11 so that the voice coil assembly 13 can move in the magnetic gap 21 .
- the rubber diaphragm 11 and the composite layer 12 are integrally formed, specifically, an integral injection molding method can be used, so that the produced rubber diaphragm 11 and the composite layer 12 are connected as a whole, and there is no need to provide glue or other technical means to ensure the rubber vibration.
- the connection effect of the film 11 and the composite layer 12 can ensure that the two are well fixed.
- the voice coil assembly 13 on the side of the composite layer 12 away from the diaphragm 11, the vibration can be transmitted through the composite layer 12, and the structural strength of the rubber diaphragm 11 can be ensured.
- the diaphragm 11 made of rubber film has good recovery force, strong water pressure resistance, no permanent deformation, and can better support the airtightness of mobile smart devices such as mobile phones. It meets the requirements of safety and water resistance, and ensures the sound-emitting effect of the sound-emitting device 100 .
- the technical solution of the present invention can ensure the connection effect between the diaphragm 11 and the dome, improve the reliability of the speaker, and ensure the quality of the speaker.
- the composite layer 12 includes a first dome 121 and a second dome 122 that are attached to each other, and the voice coil assembly 13 is connected to the first dome 121 .
- the spherical top 121 is integrally formed with the second spherical top 122 at the center of the diaphragm 11 .
- the dome is the DOME
- the sounding device 100 at this time can be understood as the dome-type sounding device 100.
- the dome speaker is one of the most widely used electric speakers in the sound box, and its biggest advantage is medium and high. Excellent frequency response and wide directivity. In addition, it also has the advantages of good transient characteristics, low distortion and better sound quality.
- the first dome 121 and the second dome 122 can be made of rigid materials, specifically materials with relatively high rigidity. In this way, on the one hand, the connection stability of the first dome 121 and the second dome 122 after being connected to the voice coil assembly 13 can be ensured. On the other hand, the vibration effect of the passively radiated diaphragm 11 is guaranteed to be better, and the vibration effect is improved.
- the material of the first dome 121 and the second dome 122 may be a material with a higher specific modulus, such as aluminum composite material, aluminum, aluminum-magnesium alloy, magnesium-lithium alloy material, carbon fiber, PEN (polynaphthalene dicarboxylic acid) Ethylene glycol ester), LCP (Liquid Crystal Polymer), foam, foam metal, etc.
- PEN polynaphthalene dicarboxylic acid
- LCP Liquid Crystal Polymer
- the material of the first dome 121 and the second dome 122 is a rigid material. Please refer to the above for details. Due to the different properties of the rubber materials, the first dome 121 and the second dome 122 can be well bonded and fixed. . By arranging the mutually bonded first dome 121 and the second dome 122, the composite layer 12 can have higher structural strength and higher specific modulus. Specifically, it can be fixed by glue or adhesive tape. Therefore, the vibration energy between the voice coil assembly 13 and the diaphragm 11 can be effectively transmitted, and the sensitivity of the sound generating device 100 can be improved.
- the entire second dome 122 and the rubber diaphragm 11 are integrally formed, on the one hand, it is convenient to ensure the bonding area of the integral molding, thereby ensuring the bonding and fixing effect, and on the other hand, the injection mold can be set according to the size of the second dome 122. , effectively ensuring the processing efficiency.
- the voice coil assembly 13 is connected to the first dome 121 , so that the force of the composite layer 12 is uniform, and the structural stability of the vibration system 10 is improved. It can be understood that, in an embodiment, the area of the first dome 121 is smaller than that of the second dome 122, and at this time, the composite layer 12 is roughly formed into a trapezoidal structure with a large upper width and a smaller lower width.
- the voice coil assembly 13 can be connected to the side surface of the first dome 121 and the bottom surface of the second dome 122, thereby ensuring the structural strength of the skeleton 131 in the voice coil assembly 13 and suppressing resonance.
- the composite layer 12 includes a first spherical top 121 and a second spherical top 122 protruding from the surface of the first spherical top 121 , the first spherical top 121 and the first spherical top 121
- the two spherical tops 122 are integrally formed, and the diaphragm is injection-molded/hot-pressed to the top surface and the side surface of the second spherical top 122 . That is, the composite layer 12 is configured as a boss structure, and the diaphragm 11 is injection-molded/hot-pressed to the top surface and the side surface of the boss.
- the composite layer 12 in this embodiment is generally arranged in a "convex" shape, and the diaphragm 11 is combined with the upper half of the "convex” shape by injection molding or hot pressing at this time, which is the second dome. top and sides.
- This arrangement enables the manufactured rubber diaphragm 11 and the composite layer 12 to be integrated as a whole, and there is no need to provide glue or other technical means to ensure the connection effect between the rubber diaphragm 11 and the composite layer 12, and the two can be well fixed.
- the combination with the top surface and the side surface of the second spherical top ensures the combined area of the diaphragm 11 and the composite layer 12 of the boss structure, and ensures the combined effect.
- the first dome 121 and/or the second dome 122 is a flat plate-like structure, and the first dome 121/second dome 122 of the flat plate-like structure can facilitate the realization of sound Miniaturization of the device 100 .
- the area of the first dome 121 is larger than that of the second dome 122 , and the voice coil assembly 13 is projected on the first dome 121 forms a first projection area, and the outer contour of the first projection area includes the outer contour of the second dome 122 .
- the area of the first dome 121 is set to be larger than that of the second dome 122, so that the setting area of the voice coil assembly 13 is larger, so that the voice coil body 132 is used for cutting the magnetic field lines. The area is larger, and the quality of the sound-emitting device 100 is improved.
- the first dome 121 is further provided with a connecting section 14 extending along the vibration direction, and the voice coil assembly 13 is fixed to the connecting section 14 .
- the connecting section 14 is provided so that the voice coil assembly 13 can be attached to the connecting section 14 , which increases the structural strength of the voice coil assembly 13 and suppresses the resonance of the voice coil assembly 13 .
- the connecting section 14 and the dome form a certain angle, specifically, 90 degrees, so as to ensure the combined area of the connecting section 14 and the voice coil assembly 13 to the greatest extent.
- the connecting section 14 extends toward the magnetic circuit system 20 ; the configuration is such that after the voice coil assembly 13 is combined with the connecting section 14 , it can be placed deeper in the magnetic gap 21 Therefore, the number of magnetic induction lines cut by the voice coil assembly 13 is increased, the sensitivity of the sound generating device 100 is improved, and the structural strength of the voice coil assembly 13 can be improved through the connecting section 14 to suppress resonance.
- the connecting section 14 extends in a direction away from the magnetic circuit system 20 . In this way, after the voice coil assembly 13 is combined with the connecting section 14 , the height of the vibration system 10 in the up-down direction is smaller, which is conducive to the formation of a smaller sounding device 100 , and the structure of the voice coil assembly 13 can be improved through the connecting section 14 . strength, suppressing resonance.
- the diaphragm 11 is liquid silicone rubber or liquid nitrile rubber, and the diaphragm 11 and the second dome 122 are integrally formed by injection molding.
- liquid rubber is used to manufacture the vibrating membrane 11 integrally formed with the second dome 122 , which is specifically manufactured by an injection molding process.
- the second dome 122 and the part that needs to be connected to the shell are put into the mold, and then liquid silicone rubber and liquid nitrile rubber are injected, and the rubber diaphragm 11 is formed after solidification. It has the advantages of good reading, good elasticity, good resilience, strong water pressure resistance, no permanent deformation, and can support the air tightness and waterproof requirements of sound-emitting devices.
- the diaphragm 11 is solid rubber, and the material of the rubber is solid silicone rubber, ethylene acrylate rubber, acrylate rubber, hydrogenated nitrile rubber, solid nitrile rubber, or ternary ethylene rubber.
- described rubber is the mixture of at least two kinds of rubber in solid silicone rubber, ethylene acrylate rubber, acrylate rubber, hydrogenated nitrile rubber, solid nitrile rubber or EPDM rubber;
- the diaphragm 11 is integrated with the second dome 122 by thermocompression.
- the rubber material is formed and bonded to the surface of the second dome 122 through a hot pressing process, and no other technical means are required to ensure the connection effect between the diaphragm 11 and the second dome 122, and can achieve good sealing and Waterproof, while improving the assembly efficiency of the diaphragm 11 and the second dome 122 .
- the second dome 122 is arranged in the middle of the first dome 121. Specifically, the center of the first dome 121 and the center of the second dome 122 are concentrically arranged. It should be noted that , when the outer contours of the first spherical top 121 and the second spherical top 122 are both regular figures, the geometric centers of the two are coincident, thereby ensuring the uniformity of vibration transmission.
- the relationship between the area S1 of the first dome 121 and the area S2 of the second dome 122 is: S1/S2 ⁇ 3, when the area difference between the first dome 121 and the second dome 122 is When the value is too large, the strength of the first dome 121 is easily reduced, which affects the energy transfer between the voice coil assembly 13 and the diaphragm 11 .
- the area of the first dome 121 can be set to 23 mm 2
- the area of the second dome 122 can be set to 10 mm 2 , which can ensure the structural strength of the composite layer 12 and facilitate the connection between the rubber diaphragm 11 and the second dome. 122 has sufficient molding area.
- the diaphragm 11 includes a center portion 111 located in a middle position, a ring portion 112 located outside the center portion 111 , and a fixing portion 113 connected to the ring portion 112 .
- the part 111 is integrally formed with the second dome 122;
- the diaphragm 11 has a vibration direction, at least part of the ring portion 112 is projected on the first dome 121 along the vibration direction to form a second projection area, and at least part of the outer contour of the second projection area is the same as the The first domes 121 overlap.
- At least part of the ring portion 112 is projected on the first dome 121 along the vibration direction to form a second projection area, and at least part of the second projection area overlaps with the first dome 121, including several implementation scenarios.
- the total area of the diaphragm 11 is changed.
- the area of the central portion 111 connected to the dome remains unchanged, the area of the ring portion 112 increases, and at least part of the first projection area overlaps with the dome, increasing the vibration.
- the linear region of the membrane 11 reduces distortion.
- the width and extension area of the folded ring portion 112 are increased, the linear area of the diaphragm 11 is improved, and the nonlinear distortion is reduced.
- the center portion 111 is a plate-like structure; setting the center portion 111 as a plate-like structure can save the space for installing the diaphragm 11 in the height direction, and facilitate the miniaturization of the sound-emitting device 100 .
- the first dome 121 is provided with a vent hole 1211 , and the first dome 121 and the voice coil assembly 13 are enclosed to form a movement space 40 ,
- the ventilation hole 1211 communicates with the movement space 40, and the ventilation hole 1211 is located in the second projection area. It can be understood that the ventilation hole 1211 is a through hole, and the ventilation hole 1211 is a hole type completely formed by the first dome 121 (it is not necessary to set the ventilation hole 1211 as a notch type, and then the first dome 121 and the first dome 121 are not used.
- the voice coil assembly 13 is connected, and the gap is blocked by the voice coil assembly 13 to form a vent hole 1211 ), in this way, the bonding area between the first dome 121 and the voice coil assembly 13 can be ensured to be larger and the fixing effect can be improved.
- the vent hole 1211 By setting the vent hole 1211, the air flow resistance generated by the first dome 121 when the voice coil assembly 13 moves is relieved by the vent hole 1211, and part of the air can flow out of the motion space 40 from the vent hole 1211, thereby increasing the gas in the motion space 40. Liquidity, reduce product distortion.
- the quality of the first dome 121 is reduced, the energy transfer loss between the voice coil and the diaphragm 11 can be reduced, and the sensitivity of the speaker can be improved. Also, the airflow created by the movement of the voice coil can be used to cool the voice coil assembly 13, allowing the loudspeaker to work better at higher power levels and longer operating ranges.
- the ring portion 112 is projected on a horizontal plane perpendicular to the vibration direction to form a third projection area
- the diaphragm 11 is projected on a horizontal plane perpendicular to the vibration direction to form a fourth projection area
- the relationship between the area S3 of the third projection area and the area S4 of the fourth projection area is: 0.7 ⁇ S3/S4 ⁇ 0.9.
- the ring portion 112 is set to occupy a larger area of the diaphragm 11 , when the ratio of the area S3 of the third projection area formed by the ring portion 112 to the area S4 of the fourth projection area formed by the diaphragm 11 When S3/S4 is less than 0.7, the area of the ring portion 112 will be small, so that the linear area of the diaphragm 11 is small, which is not conducive to reducing speaker distortion.
- the ratio S3/S4 of the area S4 of the fourth projection area formed by the film 11 is greater than 0.9, the area of the ring portion 112 will be too large, so that the diaphragm 11 is used for the fixed part (including the central portion 111 and the fixed portion 113113)
- the setting area is small, which is not conducive to fixing.
- the ratio S3/S4 of the area S3 of the third projection area formed by the ring portion 112 to the area S4 of the fourth projection area formed by the diaphragm 11 is in the range of 0.7 to 0.9, on the one hand, the distortion can be reduced, and on the other hand The combination effect of the diaphragm 11 with other components can also be effectively guaranteed.
- the value range of the width w of the ring portion 112 is: 1mm ⁇ w ⁇ 2mm; it is defined that the diaphragm 11 has a length direction and a width direction that are perpendicular to each other, The length direction and the width direction are both perpendicular to the vibration direction, and the value range of the width value w of the ring portion 112 in the width direction is: 1 mm ⁇ w ⁇ 2mm.
- the shape of the diaphragm 11 can be a circle, an ellipse, a racetrack shape or a polygon.
- the ring portion 112 When the diaphragm is circular, the ring portion 112 is generally arranged in an annular shape, and the length value obtained in the length direction is the same as the one obtained.
- the width values obtained in the width direction are the same.
- the diaphragm 11 has a long strip-shaped structure such as an ellipse, a racetrack, or a rectangle, at this time, the width direction is the direction with the shorter side length. That is, the value of the ring portion 112 at the short side length is greater than 1 mm.
- the value is smaller than this value, the area of the linear region is likely to be small, and the nonlinear distortion cannot be effectively reduced.
- the value range of w is: 1mm ⁇ w ⁇ 2mm, on the one hand, it is convenient to ensure the area of the linear region and reduce the nonlinear distortion, and on the other hand, it is convenient for the miniaturization of the product.
- the value of w is: 1.1mm, 1.3mm, 1.5mm, 1.7mm, 1.9mm, etc., on the one hand, it is convenient to ensure the area of the linear region and reduce the nonlinear distortion, and on the other hand, it is convenient for the product miniaturization. Since the center part of the existing diaphragm is attached to the entire surface of the dome, under the condition that the total area of the diaphragm remains unchanged, the setting width of the ring portion 112 is relatively small, generally less than 1 mm. setting.
- the value range of the height h of the folding ring portion 112 is: 0.9mm ⁇ h ⁇ 1.3mm. It can be understood that the height is the height of the ring portion 112 in the vibration direction. When the height of the ring portion 112 is less than 0.9 mm, the linear region formed by the ring portion 112 is also smaller, which cannot effectively reduce nonlinear distortion. . When the height is greater than 1.3 mm, the height of the folding ring portion 112 is relatively large, which is not conducive to the miniaturization of the sound-emitting device.
- the central portion 111 is provided with an extension section, and the extension section extends from the central portion 111 to the first dome 121 and is connected with the The sides of the second dome 122 are connected.
- the extension section is provided to increase the bonding area between the rubber diaphragm 11 and the second dome 122 , thereby improving the bonding effect of the rubber diaphragm 11 and the second dome 122 . It can be understood that, in this embodiment, a certain interval is formed between the injection cavity formed by the mold and the second dome 122, so that the injection-molded rubber can flow to the edge of the second dome 122 to form an extended section to maximize The bonding area between the rubber and the second dome 122 is greatly improved.
- the injection molding will form a plurality of discontinuous extension segments. It is guaranteed to increase the bonding area between the second dome 122 and the rubber diaphragm 11 to a certain extent to improve the connection effect. On the other hand, it can reduce the quality of the rubber diaphragm 11 and ensure the energy transfer loss between the voice coil assembly 13 and the diaphragm 11. lower, the sensitivity of the sound-emitting device 100 is improved.
- the extending section is disposed around the periphery of the second spherical top 122 ; the bottom surface of the first spherical top 121 is integrated with the second spherical top 122 .
- the voice coil assembly 13 can be uniformly combined with the extension section, thereby improving the stability of the voice coil assembly 13 .
- the surrounding arrangement can increase the area of the extension section, and after the voice coil assembly 13 is combined, the structural strength of the voice coil assembly 13 can be effectively improved, and resonance can be suppressed.
- the height of the fixing portion 113 in the vibration direction is lower than the height of the central portion 111 .
- the height means that the vertical axis is the vertical axis, and the fixing portion 113 is located below the position of the center portion 111 on the vertical axis.
- This arrangement enables the ring portion 112 of the diaphragm 11 to have a larger surface area, which is beneficial to increase the area of the linear region of the diaphragm 11 , thereby reducing the nonlinear distortion of the sound-emitting device 100 .
- the fixing portion 113 includes a fixing body 1131 and a fixing groove 1132 provided in the fixing body 1131 , the fixing body 1131 and the ring portion 112 connection, the fixing groove 1132 is used for fixing the diaphragm 11 .
- the fixing groove 1132 is clamped on the casing, so as to fix the diaphragm 11 .
- the diaphragm 11 can be integrally injection-molded with the housing. Alternatively, a recessed portion may be provided in the housing, and the fixing portion 113 may be combined with the housing by means of injection molding or hot pressing. That is, the diaphragm 11 is combined with the housing at the same time of molding.
- the diaphragm 11 and the casing are combined by injection molding or hot pressing, which can reduce the fixing steps of the diaphragm 11 and the casing and improve the processing efficiency.
- the fixing portion 113 further includes a limiting segment 1133 , one side of the limiting segment 1133 is connected to the groove wall of the fixing slot 1132 , and the other side faces the fixing slot 1132 notch extension.
- the limiting section 1133 By arranging the limiting section 1133 , the bonding area between the fixing portion 113 and the housing is increased, thereby improving the fixing effect of the diaphragm 11 .
- the specific implementation manner is similar to the manner of forming the extension segment, which will not be repeated here.
- the present invention also provides an electronic device, the electronic device includes a vibration system 10 and a magnetic circuit system 20, the magnetic circuit system 20 is provided with a magnetic gap 21, and the vibration system 10 includes: a vibration film 11, the vibration film 11 The material is rubber; the composite layer 12, the center of the diaphragm 11 is integrally formed with at least part of the composite layer 12; and the voice coil assembly 13, the voice coil assembly 13 is connected to the composite layer 12 away from the On one side of the diaphragm 11, the voice coil assembly 13 is movably arranged in the magnetic gap 21. Since the electronic device adopts all the technical solutions of the above-mentioned embodiments, it has at least the technical solutions of the above-mentioned embodiments. All the beneficial effects brought about will not be repeated here.
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Abstract
本发明公开一种发声器件和电子设备,该发声器件包括振动系统和磁路系统,所述磁路系统设有磁间隙,所述振动系统包括:振膜,所述振膜的材质为橡胶;复合层,所述振膜的中心处与至少部分所述复合层一体成型设置;以及音圈组件,所述音圈组件连接于所述复合层背离所述振膜的一侧,所述音圈组件可活动地设于所述磁间隙内。本发明的技术方案旨在保证振膜与球顶的连接效果,提高扬声器的可靠性,保证扬声器的品质。
Description
本发明涉及电声技术领域,特别涉及一种发声器件及电子设备。
在手机、平板等移动智能设备中,扬声器得到了广泛的应用,随着移动智能设备的发展,其对扬声器在语音和音乐品质、可靠性、重量、尺寸等方面均有越来较高的要求。扬声器的振膜一般采用高分子材料制成,目前的发展趋势是采用橡胶膜作为振膜。若采用传统方式使用胶水粘接橡胶膜与球顶、橡胶膜与音圈组件,则需将橡胶膜与球顶通过双面胶或者涂胶粘接于振膜,再在球顶的另一面设置胶水,进而与音圈组件粘接成振动系统。但是目前没有既有利于扬声器声学性能,又有较强粘性的,用于粘接橡胶膜与其它部件的胶水,以及由于橡胶材质的表面惰性,使得两种材料之间呈化学惰性,且橡胶制品表面析出的微量硅油可能导致粘结变得十分困难,橡胶和待粘表面的溶度参数相差太大,范德华力不足以将二者粘附在一起,以及橡胶与待粘表面的接触面积太小,物理相容性差,使得橡胶不易粘连。如此,无法保证振膜与球顶的连接效果,影响了扬声器的可靠性,降低了扬声器的品质。
发明内容
本发明的主要目的是提供一种发声器件,旨在保证振膜与球顶的连接效果,提高扬声器的可靠性,保证扬声器的品质。
为实现上述目的,本发明提出的发声器件,包括振动系统和磁路系统,所述磁路系统设有磁间隙,所述振动系统包括:
振膜,所述振膜的材质为橡胶;
复合层,所述振膜的中心处与至少部分所述复合层一体成型设置;以及
音圈组件,所述音圈组件连接于所述复合层背离所述振膜的一侧,所述音圈组件可活动地设于所述磁间隙内。
在本发明的一些实施例中,所述复合层包括相互贴合的第一球顶和第二球顶,所述音圈组件连接于所述第一球顶,所述振膜的中心处与所述第二球顶一体成型设置,所述第一球顶的中心和所述第二球顶的中心同心设置;
或者,所述复合层包括第一球顶和凸设于所述第一球顶表面的第二球顶,所述第一球顶和所述第二球顶为一体结构,所述振膜注塑/热压结合于所述第二球顶的顶面和的侧面。
在本发明的一些实施例中,所述第一球顶的面积大于所述第二球顶的面积,所述音圈组件投影于所述第一球顶形成第一投影区域,所述第一投影区域的外轮廓包含所述第二球顶的外轮廓;
且/或,所述第一球顶和所述第二球顶粘结固定。
在本发明的一些实施例中,所述振膜为液态硅橡胶或者液态丁腈橡胶,所述振膜与所述第二球顶注塑结合为一体。
在本发明的一些实施例中,所述振膜为固态橡胶,所述橡胶的材质为固态硅橡胶、乙烯丙烯酸酯橡胶、丙烯酸酯橡胶、氢化丁腈橡胶、固态丁腈橡胶或者三元乙丙橡胶中的一种;或者,所述橡胶为固态硅橡胶、乙烯丙烯酸酯橡胶、丙烯酸酯橡胶、氢化丁腈橡胶、固态丁腈橡胶或者三元乙丙橡胶中的至少两种橡胶的混合物;所述振膜与所述第二球顶热压结合为一体。
在本发明的一些实施例中,所述振膜包括位于中间位置的中心部、位于中心部外侧的折环部以及与所述折环部连接的固定部,所述中心部与所述第二球顶一体成型设置;
定义所述振膜具有振动方向,至少部分所述折环部沿振动方向投影于所述第一球顶形成第二投影区域,至少部分所述第二投影区域的外轮廓与所述第一球顶重合。
在本发明的一些实施例中,所述折环部投影于垂直所述振动方向的水平 面形成第三投影区域,所述振膜投影于垂直所述振动方向的水平面形成第四投影区域,所述第三投影区域的面积S3与所述第四投影区域的面积S4的关系为:0.7≤S3/S4≤0.9。
在本发明的一些实施例中,所述折环部的宽度w的取值范围为:1mm≤w≤2mm;
且/或,所述折环部的高度h的取值范围为:0.9mm≤h≤1.3mm。
在本发明的一些实施例中,所述中心部为平板状结构;
且/或,所述第一球顶和/或所述第二球顶为平板状结构。
在本发明的一些实施例中,所述中心部设有延伸段,所述延伸段自所述中心部向所述第一球顶延伸,并与所述第二球顶的侧面连接。
在本发明的一些实施例中,所述延伸段环绕所述第二球顶的周缘设置;第一球顶的底面与所述第二球顶结合为一体。
在本发明的一些实施例中,所述固定部在所述振动方向的高度低于所述中心部的高度。
在本发明的一些实施例中,所述固定部包括固定本体和设于所述固定本体的固定槽,所述固定本体与所述折环部连接,所述固定槽用于固定所述振膜。
在本发明的一些实施例中,所述固定部还包括限位段,所述限位段的一侧与所述固定槽的槽壁连接,另一侧向所述固定槽的槽口延伸。
在本发明的一些实施例中,所述第一球顶和所述第二球顶的材质包括刚性材料;所述刚性材料包括碳纤维材料、金属材料或者发泡金属中的至少一 种。
本发明还提出一种电子设备,包括发声器件,所述发声器件包括振动系统和磁路系统,所述磁路系统设有磁间隙,所述振动系统包括:
振膜,所述振膜的材质为橡胶;
复合层,所述振膜的中心处与至少部分所述复合层一体成型设置;以及
音圈组件,所述音圈组件连接于所述复合层背离所述振膜的一侧,所述音圈组件可活动地设于所述磁间隙内。
本发明发声器件通过设置振动系统和磁路系统,并且在磁路系统设置磁间隙,进而在振动系统设置材质为橡胶的振膜,并将振膜的中心处与至少一部分的复合层一体成型连接,再将音圈组件连接在复合层背离振膜的一侧,并使得音圈组件能在磁间隙内运动。由于将橡胶振膜与复合层采用一体成型设置,具体可以为一体注塑成型方式,使得制作出来的橡胶振膜与复合层联结为一体,无需再设置胶水或其他技术手段保证橡胶振膜与复合层的连接效果,就能保证二者很好的固定。以及,将音圈组件连接在复合层背离振膜的一侧,可以通过复合层对振动进行传递,保证橡胶振膜的结构强度。并且橡胶由于具有防水性能好、弹性好的优点,采用橡胶膜制作的振膜具有较好的回复力,耐水压能力强,无永久形变,能够更好地支持手机等移动智能设备对气密性和防水性的要求,并保证发声器件的发声效果。如此,本发明的技术方案可以保证振膜与球顶的连接效果,提高扬声器的可靠性,保证扬声器的品质。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图示出的结构获得其他的附图。
图1为本发明发声器件一实施例的结构示意图;
图2为本发明发声器件的连接段朝向磁路系统设置一实施例的截面图;
图3为本发明发声器件的连接段沿振动方向延伸一实施例的截面图;
图4为本发明发声器件的振膜一实施例的结构示意图。
附图标号说明:
标号 | 名称 | 标号 | 名称 |
100 | 发声器件 | 122 | 第二球顶 |
10 | 振动系统 | 13 | 音圈组件 |
11 | 振膜 | 131 | 骨架 |
111 | 中心部 | 132 | 音圈本体 |
112 | 折环部 | 14 | 连接段 |
113 | 固定部 | 20 | 磁路系统 |
1131 | 固定本体 | 21 | 磁间隙 |
1132 | 固定槽 | 22 | 中心磁钢 |
1133 | 限位段 | 23 | 导磁盆架 |
12 | 复合层 | 24 | 华司 |
121 | 第一球顶 | 40 | 运动空间 |
1211 | 通气孔 |
本发明目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明的一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
需要说明,本发明实施例中所有方向性指示(诸如上、下、左、右、前、后……)仅用于解释在某一特定姿态(如附图所示)下各部件之间的相对位置关系、运动情况等,如果该特定姿态发生改变时,则该方向性指示也相应 地随之改变。
另外,在本发明中涉及“第一”、“第二”等的描述仅用于描述目的,而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外,各个实施例之间的技术方案可以相互结合,但是必须是以本领域普通技术人员能够实现为基础,当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在,也不在本发明要求的保护范围之内。
在本发明中,除非另有明确的规定和限定,术语“连接”、“固定”等应做广义理解,例如,“固定”可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系,除非另有明确的限定。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
本发明提出一种发声器件100,请参照图1至图4所示,在本发明的一些实施例中,该发声器件100,包括振动系统10和磁路系统20,所述磁路系统20设有磁间隙21,所述振动系统10包括:
振膜11,所述振膜11的材质为橡胶;
复合层12,所述振膜11的中心处与至少部分所述复合层12一体成型设置;以及
音圈组件13,所述音圈组件13连接于所述复合层12背离所述振膜11的一侧,所述音圈组件13可活动地设于所述磁间隙21内。
在本实施例中,为了简化描述,将发声器件100的振膜11朝上放置时的位置为参考界定上下,即振膜11背向磁路系统20的一侧为上,振膜11朝向磁路系统20的一侧为下。此时,该振动方向即为上下方向。
振动系统10的大致结构和原理可以参考现有的形式,具体的,音圈组件13伸入磁间隙21,音圈组件13的音圈本体132通常是由金属线缠绕而成的,当音圈组件13接通电信号之后,在磁场中受安培力的作用上下振动,音圈组件13运动带动振膜11振动,其能量变换方式是电能—机械能—声能。为了 调整振动的频率特性,振动系统10还可包括配重块。
磁路系统20的形式也可以参考现有的结构,例如磁间隙21既可以形成在中心磁钢22与边磁钢之间,也可以形成中心磁钢22与导磁盆架23的侧壁之间。中心磁钢22的俯视形状既可以为圆形也可以为圆角矩形等。该中心磁钢22上还可以设置华司24,从而可以改善磁感线的分布,提高音圈组件13的运动效果。
为了方便安装振动系统10及磁路系统20,发声器件100还包括外壳,外壳用于收容振动系统10及磁路系统20。外壳对应振动系统10的位置设有供声音出射的出声孔。
本发明的一些实施例中,振膜11可产生位于人的听觉响音范围声音,例如,频率范围在20~20000HZ,如此,用户可以从发声器件100直接接收声音信息。可以理解的是,在其他实施例中,振膜11还可用于产生其他频率范围的声音,例如人耳听觉相应范围为的“声音密码”,这种声音可以被机器解码,以实现相应的信号传输。
在本发明的一些实施例中,所述音圈组件13包括骨架131和音圈本体132,所述音圈本体132绕设于所述骨架131外侧,所述焊盘设于所述音圈本体132的外侧,所述音圈本体132被配置为能够通入电信号,所述音圈本体132设有引线,所述引线搭接于所述焊盘,所述骨架131与所述第一球顶121连接。该引线可以为漆包线或者为裸线,当采用粘结固定时可以在漆包线的表面显露一定的金属,将显露出的金属粘结于焊盘;当采用焊接固定时可以用裸线,便于固定。设置骨架131可以便于对音圈本体132固定,保证音圈组件13工作的稳定性。
本发明发声器件100通过设置振动系统10和磁路系统20,并且在磁路系统20设置磁间隙21,进而在振动系统10设置材质为橡胶的振膜11,并将振膜11的中心处与至少一部分的复合层12一体成型连接,再将音圈组件13连接在复合层12背离振膜11的一侧,并使得音圈组件13能在磁间隙21内运动。由于将橡胶振膜11与复合层12采用一体成型设置,具体可以为一体注塑成型方式,使得制作出来的橡胶振膜11与复合层12联结为一体,无需再设置胶水或其他技术手段保证橡胶振膜11与复合层12的连接效果,就能保证二者很好的固定。以及,将音圈组件13连接在复合层12背离振膜11的一 侧,可以通过复合层12对振动进行传递,保证橡胶振膜11的结构强度。并且橡胶由于具有防水性能好、弹性好的优点,采用橡胶膜制作的振膜11具有较好的回复力,耐水压能力强,无永久形变,能够更好地支持手机等移动智能设备对气密性和防水性的要求,并保证发声器件100的发声效果。如此,本发明的技术方案可以保证振膜11与球顶的连接效果,提高扬声器的可靠性,保证扬声器的品质。
参照图1至图3,在本发明的一些实施例中,所述复合层12包括相互贴合的第一球顶121和第二球顶122,所述音圈组件13连接于所述第一球顶121,所述振膜11的中心处与所述第二球顶122一体成型设置。可以理解的是,球顶即为DOME,此时的发声器件100可以理解为球顶型发声器件100,介绍球顶形扬声器是音箱中使用最广泛的电动式扬声器之一,它最大优点是中高频响应优异和指向性较宽。此外,它还具有瞬态特性好、失真小和音质较好等优点。
本发明一些实施例中的第一球顶121和第二球顶122可以采用刚性材料,具体为刚度较高的材料,如此,一方面可以保证其与音圈组件13连接后的连接稳定性,另一方面保证被动辐射的振膜11的振动效果更优,改善振动效果。具体的,第一球顶121和第二球顶122的材质可以采用比模量高的材质,例如,铝复合材质,铝,铝镁合金,镁锂合金材质,碳纤维,PEN(聚萘二甲酸乙二醇酯),LCP(Liquid Crystal Polymer液晶聚合物),发泡体,发泡金属等。
本实施例中,第一球顶121和第二球顶122的材质为刚性材料,具体参照前述,由于橡胶材料的属性不同,第一球顶121和第二球顶122可以良好地粘结固定。通过设置相互粘结的第一球顶121和第二球顶122可以使得复合层12的结构强度较高,比模量较大,具体的,可以通过胶水粘结固定或者通过胶带粘结固定,从而可以有效对音圈组件13与振膜11之间的振动能量进行传递,提高发声器件100的灵敏度。并且,由于将整个第二球顶122与橡胶振膜11一体成型,一方面便于保证一体成型的结合面积,进而保证结合固定效果,另一方面使得注塑模具可以根据第二球顶122的大小设置,有效地保证了加工效率。以及,将音圈组件13连接在第一球顶121,使得复合层12的受力均匀,提高振动系统10的结构稳定性。可以理解的是,在一实施例 中,第一球顶121的面积小于第二球顶122的面积,此时,复合层12大致合成上侧宽度大,下侧宽度小的梯形结构。音圈组件13可以连接在第一球顶121的侧面与第二球顶122的底面,从而保证音圈组件13中骨架131的结构强度,抑制谐振。
在本发明的一些实施例中,所述复合层12包括第一球顶121和凸设于所述第一球顶121表面的第二球顶122,所述第一球顶121和所述第二球顶122为一体结构,所述振膜注塑/热压结合于所述第二球顶122的顶面和的侧面。也即,所述复合层12设置为凸台结构,所述振膜11注塑/热压结合于所述凸台的顶面和的侧面。可以理解的是,本实施例中的复合层12大致呈“凸”字形设置,振膜11此时采用注塑或热压的方式结合于“凸”字形上半部分,即为该第二球顶的顶面和侧面。如此设置使得制作出来的橡胶振膜11与复合层12联结为一体,无需再设置胶水或其他技术手段保证橡胶振膜11与复合层12的连接效果,就能保证二者很好的固定。同时与第二球顶(凸台)的顶面和侧面结合保证了振膜11与凸台结构的复合层12结合面积,保证了结合的效果。
在本发明的一些实施例中,所述第一球顶121和/或所述第二球顶122为平板状结构,平板状结构的第一球顶121/第二球顶122可以便于实现发声器件100的小型化。
参照图1至图3,在本发明的一些实施例中,所述第一球顶121的面积大于所述第二球顶122的面积,所述音圈组件13投影于所述第一球顶121形成第一投影区域,所述第一投影区域的外轮廓包含所述第二球顶122的外轮廓。本实施例中,将第一球顶121的面积设置为大于第二球顶122的面积,如此设置,使得音圈组件13的设置区域较大,从而音圈本体132用于切割磁感线的面积更大,提高发声器件100的品质。
并且,在本发明的一些实施例中,所述第一球顶121还设有沿所述振动方向延伸的连接段14,所述音圈组件13固定于所述连接段14。本实施例中通过设置连接段14,使得音圈组件13可以附接于该连接段14,增加了音圈组件13的结构强度,抑制音圈组件13的谐振。可以理解的是,该连接段14与球顶形成一定的夹角,具体可以为90度,从而最大限度地保证连接段14与音圈组件13的结合面积。
参照图2,在本发明的一些实施例中,所述连接段14朝向所述磁路系统20延伸;如此设置,使得音圈组件13与连接段14结合后,可以更深地安置在磁间隙21内,从而提高音圈组件13切割的磁感线数目,提高发声器件100的灵敏度,并且便于通过连接段14可以提高音圈组件13的结构强度,抑制谐振。
在本发明的一些实施例中,所述连接段14朝向背离所述磁路系统20的方向延伸。如此设置,使得音圈组件13与连接段14结合后,振动系统10在上下方向的高度更小,利于形成体积较小的发声器件100,并且便于通过连接段14可以提高音圈组件13的结构强度,抑制谐振。
在本发明的一些实施例中,所述振膜11为液态硅橡胶或者液态丁腈橡胶,所述振膜11与所述第二球顶122注塑结合为一体。本实施例中采用液态的橡胶采用制作与第二球顶122一体成型的振膜11,具体通过注塑成型的工艺制作。将第二球顶122和外壳需要连接的部分放入模具中,继而注塑液态硅橡胶和液态丁腈橡胶,待凝固后形成橡胶振膜11,通过高分子材料制作的橡胶振膜11具有防水心念好,弹性好的优点,并且具有较好的回复力,耐水压能力强,无永久形变,能够支持发声器件对气密性和防水性的要求。
在本发明的一些实施例中,所述振膜11为固态橡胶,所述橡胶的材质为固态硅橡胶、乙烯丙烯酸酯橡胶、丙烯酸酯橡胶、氢化丁腈橡胶、固态丁腈橡胶或者三元乙丙橡胶中的一种;或者,所述橡胶为固态硅橡胶、乙烯丙烯酸酯橡胶、丙烯酸酯橡胶、氢化丁腈橡胶、固态丁腈橡胶或者三元乙丙橡胶中的至少两种橡胶的混合物;所述振膜11与所述第二球顶122热压结合为一体。橡胶材料通过热压工艺成型并结合于所述第二球顶122的表面,无需再经过其他技术手段来保证振膜11与第二球顶122的连接效果,并且能达到很好的密封性和防水性,同时提高了振膜11与第二球顶122的装配效率。
在本发明的一些实施例中,第二球顶122设于第一球顶121的中部,具体的,第一球顶121的中心和第二球顶122的中心呈同心设置,需要说明的是,当第一球顶121和第二球顶122的外轮廓均为规则图形时,二者的几何中心重合,进而保证振动传递的均与性。在一实施例中,第一球顶121的面积S1与第二球顶122的面积S2之间的关系为:S1/S2≤3,当第一球顶121与第二球顶122的面积差值过大时,容易导致第一球顶121的强度降低,影 响音圈组件13与振膜11之间的能量传递。具体的第一球顶121的面积可以设置为23mm
2,第二球顶122的面积可以设置为10mm
2,如此可以保证复合层12的结构强度,并且便于使橡胶振膜11与第二球顶122具有足够的成型面积。
在本发明的一些实施例中,所述振膜11包括位于中间位置的中心部111、位于中心部111外侧的折环部112以及与所述折环部112连接的固定部113,所述中心部111与所述第二球顶122一体成型设置;
定义所述振膜11具有振动方向,至少部分所述折环部112沿振动方向投影于所述第一球顶121形成第二投影区域,至少部分所述第二投影区域的外轮廓与所述第一球顶121重合。
需要说明的是,至少部分折环部112沿振动方向投影于所述第一球顶121形成第二投影区域,并且至少部分的第二投影区域与第一球顶121重合包括几种实施场景,在一实施场景中,保持振膜11的总面积不变,此时中心部111连接于第一球顶121的面积减小,折环部112的面积增加,使得至少部分的第二投影区域与球顶重合,由于采用中心部111与第二球顶122一体成型的固定方式,振膜11与复合层12具有良好的连接效果,即使在减小中心部111的面积的情况下,也可以实现良好的固定。在一实施场景中,改变振膜11的总面积,此时中心部111连接于球顶的面积不变,折环部112的面积增加,至少部分的第一投影区域与球顶重合,增加振膜11的线性区域,降低失真。本发明实施例中,由于折环部112的部分与球顶是重合的,也即增加了折环部112的设置宽度和延伸区域,提高了振膜11的线性区域,进而降低非线性失真。
在本发明的一些实施例中,所述中心部111为平板状结构;将中心部111设置为平板状结构可以节省振膜11在高度方向的设置空间,便于实现发声器件100的小型化。
参照图2、图3,在本发明的一些实施例中,所述第一球顶121设有通气孔1211,所述第一球顶121与所述音圈组件13围合形成运动空间40,所述通气孔1211连通于所述运动空间40,且所述通气孔1211位于所述第二投影区域内。可以理解的是,该通气孔1211为贯穿孔,且该通气孔1211为完全由第一球顶121形成的孔型(不采用将通气孔1211设置为缺口型,再将第一 球顶121与音圈组件13连接,缺口处由音圈组件13封堵形成通气孔1211的形式),如此,可以保证第一球顶121与音圈组件13的结合面积较大,提高固定效果。通过设置通气孔1211,使得音圈组件13运动时由第一球顶121产生的空气气流阻力,由通气孔1211泄压,部分空气可以从通气孔1211流出运动空间40,提高运动空间40的气体流通性,降低产品失真。进一步地,由于设置通气孔1211,降低了第一球顶121的质量,可以保证音圈与振膜11之间的能量传递损耗降低,提高扬声器灵敏度。以及,通过音圈运动产生的气流可以用于冷却音圈组件13,从而允许扬声器在较高的功率级和较长的工作区间下较好地工作。
在本发明的一些实施例中,所述折环部112投影于垂直所述振动方向的水平面形成第三投影区域,所述振膜11投影于垂直所述振动方向的水平面形成第四投影区域,所述第三投影区域的面积S3与所述第四投影区域的面积S4的关系为:0.7≤S3/S4≤0.9。本实施例中,将折环部112设置为占振膜11较大的面积,当折环部112形成的第三投影区域的面积S3与振膜11形成的第四投影区域的面积S4的比值S3/S4小于0.7时,会使折环部112的面积较小,从而振膜11的线性区域较小,不利于降低扬声器失真,当折环部112形成的第三投影区域的面积S3与振膜11形成的第四投影区域的面积S4的比值S3/S4大于0.9时,会使折环部112的面积过大,这样振膜11用于固定的部分(包括中心部111和固定部113113)的设置区域较小,不利于固定。当折环部112形成的第三投影区域的面积S3与振膜11形成的第四投影区域的面积S4的比值S3/S4取值范围在0.7至0.9时,一方面可以降低失真,另一方面还可以有效保证振膜11的与其他部件的结合效果。可以理解的是,当S3/S4取值为0.71、0.75、0.79、0.8、0.81、0.85、0.89时,均可一方面可以降低失真,另一方面还可以有效保证振膜11的与其他部件的结合效果。
参照图1,在本发明的一些实施例中,所述折环部112的宽度w的取值范围为:1mm≤w≤2mm;定义所述振膜11具有相互垂直的长度方向和宽度方向,所述长度方向和所述宽度方向均垂直于所述振动方向,所述折环部112在所述宽度方向的宽度值w的取值范围为:1mm≤w≤2mm。可以理解的是,振膜11的形状可以为圆形、椭圆形、跑道型或者多边形,当振膜为圆形时,折环部112大致呈圆环状设置,在长度方向取得的长度值与在宽度方向取得 的宽度值相等,当振膜11呈椭圆形、跑道型或者矩形等长条形结构时,此时,宽度方向即为边长取值较短的方向。也即,折环部112在边长较短处的取值要大于1mm,当小于这个取值时,容易使得线性区域的面积较小,不能有效降低非线性失真。当大于2mm时,振膜的面积较大,不利于发声器件的小型化。当w的取值范围为:1mm≤w≤2mm,一方面便于保证线性区域的面积,降低非线性失真,另一方面便于产品的小型化。可以理解的是,当w的取值为:1.1mm、1.3mm、1.5mm、1.7mm、1.9mm等,均可一方面便于保证线性区域的面积,降低非线性失真,另一方面便于产品的小型化。现有的振膜由于其中心部是贴合在球顶的整个表面上的,在振膜的总面积不变的情况下,因此,折环部112的设置宽度较小,一般均为小于1mm的设置。
参照图1,在本发明的一些实施例中,所述折环部112的高度h的取值范围为:0.9mm≤h≤1.3mm。可以理解的是,该高度即为折环部112在振动方向的高度,当折环部112的高度小于0.9mm时,同样使得折环部112形成的线性区域较小,不能有效低非线性失真。当高度大于1.3mm时,折环部112的高度较大,不利于发声器件的小型化。当h的取值范围为:0.9mm≤h≤1.3mm,一方面便于保证线性区域的面积,降低非线性失真,另一方面便于产品的小型化。可以理解的是,当w的取值为:1mm、1.1mm、1.2mm等,均可一方面便于保证线性区域的大小,降低非线性失真,另一方面便于产品的小型化。现有的振膜由于其中心部是贴合在球顶的整个表面上的,在振膜的总面积不变的情况下,因此,折环部112的设置高度受到限制,一般均为小于0.9mm的设置。以及,折环部112的高度较小的情况下,增加了振膜的制作难度,成本提高,生产效率低。
参照图1至图3,在本发明的一些实施例中,所述中心部111设有延伸段,所述延伸段自所述中心部111向所述第一球顶121延伸,并与所述第二球顶122的侧面连接。本实施例通过设置延伸段,增加橡胶振膜11与第二球顶122的结合面积,从而提高橡胶振膜11与第二球顶122的结合效果。可以理解的是,本实施例中,模具形成的注塑腔体与第二球顶122之间形成一定的间隔,从而注塑的橡胶可以流至第二球顶122的边缘,形成延伸段,最大限度地提高橡胶与第二球顶122的结合面积。当然,可以理解的是,如果部分注塑腔体与第二球顶122接触,另一部分注塑腔体与第二球顶122形成间隙,则注 塑形成不连续的多个延伸段,设置,一方面可以保证在一定程度增加第二球顶122与橡胶振膜11的结合面积,提高连接效果,另一方面可以减轻橡胶振膜11的质量,保证音圈组件13与振膜11之间的能量传递损耗较低,提高发声器件100的灵敏度。
在本发明的一些实施例中,所述延伸段环绕所述第二球顶122的周缘设置;第一球顶121的底面与所述第二球顶122结合为一体。通过设置环绕的延伸段,使得音圈组件13可以均匀结合于延伸段,提高音圈组件13的稳定性。并且环绕设置的方式可以提高延伸段的面积,在结合音圈组件13后,可以有效提高音圈组件13的结构强度,抑制谐振。
参照图,在本发明的一些实施例中,所述固定部113在所述振动方向的高度低于所述中心部111的高度。需要说明的是,高度即为以上下方向为纵轴,固定部113位于中心部111在纵轴的位置下方。如此设置使得振膜11的折环部112具有更大的表面积设置,有利于提高振膜11线性区域的面积,进而减小发声器件100的非线性失真。
参照图1至图3,在本发明的一些实施例中,所述固定部113包括固定本体1131和设于所述固定本体1131的固定槽1132,所述固定本体1131与所述折环部112连接,所述固定槽1132用于固定所述振膜11。可以理解的是,该固定槽1132卡接于外壳上,从而对振膜11进行固定。该振膜11可以与外壳一体注塑成型。或者,可以在外壳设置凹陷部,通过注塑或者热压的方式,将固定部113与外壳结合。也即,振膜11是在成型的同时与外壳相结合。振膜11与外壳通过注塑或热压的方式结合,可以减少振膜11与外壳的固定步骤,提高加工效率。
在本发明的一些实施例中,所述固定部113还包括限位段1133,所述限位段1133的一侧与所述固定槽1132的槽壁连接,另一侧向所述固定槽1132的槽口延伸。通过设置限位段1133,提高固定部113与外壳的结合面积,从而提高振膜11的固定效果。具体的实现方式与形成延伸段的方式类似,在此不做赘述。
本发明还提出一种电子设备,该电子设备包括振动系统10和磁路系统20,所述磁路系统20设有磁间隙21,所述振动系统10包括:振膜11,所述振膜 11的材质为橡胶;复合层12,所述振膜11的中心处与至少部分所述复合层12一体成型设置;以及音圈组件13,所述音圈组件13连接于所述复合层12背离所述振膜11的一侧,所述音圈组件13可活动地设于所述磁间隙21内,由于本电子设备采用了上述所有实施例的全部技术方案,因此至少具有上述实施例的技术方案所带来的所有有益效果,在此不再一一赘述。
以上所述仅为本发明的优选实施例,并非因此限制本发明的专利范围,凡是在本发明的构思下,利用本发明说明书及附图内容所作的等效结构变换,或直接/间接运用在其他相关的技术领域均包括在本发明的专利保护范围内。
Claims (15)
- 一种发声器件,其特征在于,包括振动系统和磁路系统,所述磁路系统设有磁间隙,所述振动系统包括:振膜,所述振膜的材质为橡胶;复合层,所述振膜的中心处与至少部分所述复合层一体成型设置;以及音圈组件,所述音圈组件连接于所述复合层背离所述振膜的一侧,所述音圈组件可活动地设于所述磁间隙内。
- 如权利要求1所述的发声器件,其特征在于,所述复合层包括相互贴合的第一球顶和第二球顶,所述音圈组件连接于所述第一球顶,所述振膜的中心处与所述第二球顶一体成型设置,所述第一球顶的中心和所述第二球顶的中心同心设置;或者,所述复合层包括第一球顶和凸设于所述第一球顶表面的第二球顶,所述第一球顶和所述第二球顶为一体结构,所述振膜注塑/热压结合于所述第二球顶的顶面和的侧面。
- 如权利要求2所述的发声器件,其特征在于,所述第一球顶的面积大于所述第二球顶的面积,所述音圈组件投影于所述第一球顶形成第一投影区域,所述第一投影区域的外轮廓包含所述第二球顶的外轮廓;且/或,所述第一球顶和所述第二球顶粘结固定。
- 如权利要求2所述的发声器件,其特征在于,所述振膜为液态硅橡胶或者液态丁腈橡胶,所述振膜与所述第二球顶注塑结合为一体。
- 如权利要求2所述的发声器件,其特征在于,所述振膜为固态橡胶,所述橡胶的材质为固态硅橡胶、乙烯丙烯酸酯橡胶、丙烯酸酯橡胶、氢化丁腈橡胶、固态丁腈橡胶或者三元乙丙橡胶中的一种;或者,所述橡胶为固态硅橡胶、乙烯丙烯酸酯橡胶、丙烯酸酯橡胶、氢化丁腈橡胶、固态丁腈橡胶或者三元乙丙橡胶中的至少两种橡胶的混合物;所述振膜与所述第二球顶热 压结合为一体。
- 如权利要求2所述的发声器件,其特征在于,所述振膜包括位于中间位置的中心部、位于中心部外侧的折环部以及与所述折环部连接的固定部,所述中心部与所述第二球顶一体成型设置;定义所述振膜具有振动方向,至少部分所述折环部沿振动方向投影于所述第一球顶形成第二投影区域,至少部分所述第二投影区域的外轮廓与所述第一球顶重合。
- 如权利要求6所述的发声器件,其特征在于,所述折环部投影于垂直所述振动方向的水平面形成第三投影区域,所述振膜投影于垂直所述振动方向的水平面形成第四投影区域,所述第三投影区域的面积S3与所述第四投影区域的面积S4的关系为:0.7≤S3/S4≤0.9。
- 如权利要求6所述的发声器件,其特征在于,所述折环部的宽度w的取值范围为:1mm≤w≤2mm;且/或,所述折环部的高度h的取值范围为:0.9mm≤h≤1.3mm。
- 如权利要求6所述的发声器件,其特征在于,所述中心部为平板状结构;且/或,所述第一球顶和/或所述第二球顶为平板状结构。
- 如权利要求6所述的发声器件,其特征在于,所述中心部设有延伸段,所述延伸段自所述中心部向所述第一球顶延伸,并与所述第二球顶的侧面连接;所述延伸段环绕所述第二球顶的周缘设置。
- 如权利要求6所述的发声器件,其特征在于,所述固定部在所述振动方向的高度低于所述中心部的高度。
- 如权利要求6所述的发声器件,其特征在于,所述固定部包括固定 本体和设于所述固定本体的固定槽,所述固定本体与所述折环部连接,所述固定槽用于固定所述振膜。
- 如权利要求12所述的发声器件,其特征在于,所述固定部还包括限位段,所述限位段的一侧与所述固定槽的槽壁连接,另一侧向所述固定槽的槽口延伸。
- 如权利要求2至13中任一项所述的发声器件,其特征在于,所述第一球顶和所述第二球顶的材质包括刚性材料;所述刚性材料包括碳纤维材料、金属材料或者发泡金属中的至少一种。
- 一种电子设备,其特征在于,包括如权利要求1至14任一项所述发声器件。
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CN112637745B (zh) * | 2020-12-30 | 2022-09-20 | 歌尔股份有限公司 | 定心支片、定心支片的加工工艺、扬声器及电子终端 |
CN112770229B (zh) * | 2020-12-30 | 2023-01-24 | 歌尔股份有限公司 | 扬声器、扬声器的振动板结构的制备方法及电子终端 |
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