WO2021128330A1 - 发声器件 - Google Patents
发声器件 Download PDFInfo
- Publication number
- WO2021128330A1 WO2021128330A1 PCT/CN2019/129400 CN2019129400W WO2021128330A1 WO 2021128330 A1 WO2021128330 A1 WO 2021128330A1 CN 2019129400 W CN2019129400 W CN 2019129400W WO 2021128330 A1 WO2021128330 A1 WO 2021128330A1
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- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- wall
- frame
- circuit system
- bent
- Prior art date
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Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/12—Non-planar diaphragms or cones
Definitions
- the invention relates to the field of electro-acoustic conversion, in particular to a sound-producing device applied to electronic sound box products.
- the related art sound generating device includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system with a magnetic gap.
- the magnetic circuit system drives the vibration system to vibrate and emit sound.
- the vibration system includes a frame fixed to the basin. The frame is used for vibrating and producing the diaphragm, the dome of the diaphragm is attached to the skeleton on the side close to the magnetic circuit system, and the sound inserted in the magnetic gap and connected with the skeleton to drive the diaphragm to vibrate ring.
- the vibration system and the magnetic circuit system are stacked up and down.
- the structure of the magnetic circuit system is limited, thereby limiting the BL value of the magnetic field;
- the sounding device has only one diaphragm structure, and the effective vibration area (SD) of the diaphragm is small, thereby limiting the loudness of the sounding device.
- the purpose of the present invention is to provide a sounding device with greater loudness and better acoustic performance.
- the present invention provides a sound generating device, which includes a basin frame, a vibration system respectively supported on the basin frame, and a magnetic circuit system that drives the vibration system to vibrate and produce sound, the magnetic circuit system having a magnetic gap ,
- the vibration system includes:
- An upper diaphragm the upper diaphragm is ring-shaped and arranged around the magnetic circuit system, and the upper diaphragm is fixed to the basin frame;
- the lower diaphragm, the lower diaphragm is ring-shaped and is arranged at intervals around the magnetic circuit system, the lower diaphragm is opposed to the upper diaphragm, and the outer peripheral side of the lower diaphragm is fixed to the basin frame ;
- a voice coil the voice coil is inserted in the magnetic gap to drive the upper diaphragm and the lower diaphragm to vibrate and produce sound;
- An upper frame the upper frame is ring-shaped and is arranged at intervals around the magnetic circuit system, and the upper frame is respectively connected with the upper diaphragm and the voice coil;
- the lower frame is ring-shaped and is arranged at intervals around the magnetic circuit system.
- the lower frame is respectively connected with the lower diaphragm and the voice coil, and the voice coil simultaneously drives the upper frame and the The lower frame to drive the upper diaphragm and the lower diaphragm to vibrate simultaneously; and,
- the isolation diaphragm is ring-shaped and is arranged at intervals around the magnetic circuit system.
- the isolation diaphragm is arranged at intervals between the upper diaphragm and the lower diaphragm.
- the outer peripheral side is connected with the basin frame, and the inner peripheral side of the isolation diaphragm is connected with the lower frame.
- the upper frame includes an upper frame body arranged at intervals on the outer peripheral side of the magnetic circuit system, an upper frame extension wall bent from the upper frame body to the magnetic circuit system and extending into the magnetic gap, and An arc-shaped upper frame connecting wall bent and extended by the upper frame extension wall; the upper frame body is connected to the upper diaphragm; the voice coil is in a rectangular structure with rounded corners, and the upper frame is connected The wall is attached to the rounded corners on the outer peripheral side of the voice coil.
- the upper frame body includes two and are respectively arranged on opposite sides of the voice coil at intervals, the opposite ends of each upper frame body are respectively bent to form two upper frame extension walls, each Each of the upper frame extension walls is bent and extended to form the upper frame connecting wall, and the four upper frame connecting walls are respectively arranged at the four round corners of the voice coil.
- the upper skeleton body includes an upper skeleton body wall and an upper reinforcement wall bent and extended from an end of the upper skeleton body wall close to the upper diaphragm in a direction perpendicular to the vibration direction of the upper diaphragm;
- the upper frame extension wall is bent and extended by the upper frame body wall, and the upper reinforcement wall is connected with the upper diaphragm.
- the lower frame includes a ring-shaped lower frame body arranged around the magnetic circuit system at intervals, and a lower frame bracket that is bent from the lower frame body to the magnetic circuit system and extends into the magnetic gap And an arc-shaped lower frame connecting wall extending from the lower frame bracket; the end of the lower frame body close to the upper diaphragm is connected to the side of the isolation diaphragm away from the upper diaphragm, The end of the lower frame body away from the upper diaphragm is connected to the side of the lower diaphragm close to the upper diaphragm, and the lower frame connecting wall is attached to the rounded corners on the outer peripheral side of the voice coil. It is arranged at intervals with the connecting wall of the upper skeleton.
- the lower frame brackets include four, the lower frame connecting walls include four, each of the lower frame brackets is bent and extended to form one of the lower frame connecting walls, and the four lower frame connecting walls They are respectively arranged at the four rounded corners of the voice coil.
- the lower skeleton body includes a lower skeleton body wall, a first lower reinforcement wall bent and extended from an end of the lower skeleton body wall close to the isolation diaphragm in a direction perpendicular to the vibration direction of the upper diaphragm, And a second lower reinforcement wall bent and extended from an end of the lower frame body wall close to the lower diaphragm in a direction perpendicular to the vibration direction, the first lower reinforcement wall and the second lower reinforcement wall are respectively located
- the two different sides of the lower frame body wall the first lower reinforcement wall is connected to the isolation diaphragm; the second lower reinforcement wall is connected to the lower diaphragm; the lower frame support is connected to the lower diaphragm;
- the wall of the lower frame body is bent and extended.
- the upper diaphragm includes a first upper folding ring portion each in a ring shape, a second upper folding ring portion in a ring shape surrounding the first upper folding ring portion and spaced apart from each other, and the The first upper vibrating portion bent and extended from the outer peripheral side of the upper folding ring portion, the first upper fixing portion bent and extended from the inner peripheral side of the first upper folding ring portion, the first upper fixing portion bent and extended by the second upper folding ring portion
- the second upper vibrating part is away from the top of the upper ball on the side of the lower diaphragm, the first upper fixing part is fixed to the magnetic circuit system, and the second upper fixing part is fixed to the basin frame;
- the frame is connected to the first upper vibrating part.
- the top of the upper ball and the isolation diaphragm are arranged directly opposite each other.
- the lower diaphragm includes a ring-shaped lower folded ring portion, a lower vibrating portion bent and extended from the inner peripheral side of the lower folded ring portion, and bent and extended from the outer periphery of the lower folded ring portion.
- the lower fixing portion and the cover are fixed to the ring-shaped lower spherical top on the side of the lower vibrating portion close to the upper diaphragm; the lower spherical top is connected to the lower skeleton, and the lower fixing portion is fixed to The basin frame.
- the isolation diaphragm and the top of the lower sphere are arranged directly opposite each other, and the width of the isolation diaphragm in a vibration direction perpendicular to the upper diaphragm is smaller than the width of the top of the lower sphere.
- the second upper folding ring portion and the lower folding ring portion are arranged directly opposite to each other.
- the second upper folding ring portion has an arc-shaped structure formed by recessing in a direction away from the lower folding ring portion
- the lower folding ring portion has an arc formed by recessing in a direction away from the second upper folding ring portion. ⁇ Shape structure.
- the basin frame includes a bottom wall that fixedly supports the magnetic circuit system, an annular side wall bent and extended from the periphery of the bottom wall, and a side wall extending from the side wall in a direction close to the magnetic circuit system
- the outer peripheral side of the lower diaphragm is fixed to the side wall and the lower diaphragm is spaced from the bottom wall, and the outer peripheral side of the upper diaphragm is fixed to the side One end of the wall away from the bottom wall, and the outer peripheral side of the isolation diaphragm is fixed to the supporting wall.
- the magnetic circuit system includes a yoke supported on the bottom wall, a main magnet fixed to the yoke, and an auxiliary magnet surrounding the main magnet, the auxiliary magnet and the
- the main magnetic steel is spaced to form the magnetic gap;
- the auxiliary magnetic steel is provided with a relief opening, and both the upper frame and the lower frame extend into the magnetic gap through the relief opening and are connected to the voice coil. Connection;
- the first upper fixing portion is fixed to the side of the secondary magnetic steel away from the yoke.
- the auxiliary magnet includes a first auxiliary magnet arranged at intervals on opposite sides of the main magnet and a second auxiliary magnet arranged at intervals on the other opposite sides of the main magnet.
- the first auxiliary magnetic steel and the second auxiliary magnetic steel are spaced apart to form the relief opening.
- the magnetic circuit system further includes a magnetic conductive plate covering the secondary magnetic steel, and the magnetic conductive plate presses the first upper fixing part on the secondary magnetic steel.
- the magnetic conductive plate abuts against the main magnetic steel.
- the end of the secondary magnetic steel away from the yoke is in a chamfered structure
- the first upper folding ring portion is set right at the position of the chamfering structure
- the first upper folding ring portion is facing away from The arc structure formed by the direction depression of the magnetic circuit system.
- the sound device of the present invention designs the vibration system and the magnetic circuit system into a parallel structure from a stacked structure, that is, the vibration system is arranged around the magnetic circuit system, so that the vibration system at the same height
- the magnetic circuit system can effectively utilize the height space of the sound generating device and be designed to be thicker, thereby effectively increasing the magnetic field BL value, making the magnetic circuit system greater driving force, improving the vibration performance of the vibration system, and greatly
- the acoustic performance of the vibration system is greatly improved; at the same time, the high vibration direction of the vibration system is counted as a double-diaphragm structure of the upper and lower diaphragms, so that the upper and lower diaphragms pass through the upper front cavity and the lower front cavity respectively.
- the cavity emits sound and shares the same rear cavity.
- This structure effectively increases the effective vibration area (SD) of the diaphragm of the vibration system by making full use of the height space of the sounding device, and improves the sounding loudness of the sounding device, that is, the vibration of the sounding device.
- SD effective vibration area
- the size of the sound generating device can be made smaller.
- Figure 1 is a schematic diagram of the three-dimensional structure of the sound generating device of the present invention.
- FIG. 2 is an exploded view of a part of the three-dimensional structure of the sound generating device of the present invention
- Figure 3 is a cross-sectional view taken along line A-A in Figure 1;
- Figure 4 is an enlarged view of the part shown in Figure 3 B;
- FIG. 5 is a schematic diagram of the upper skeleton structure of the sound generating device of the present invention.
- FIG. 6 is a schematic diagram of the lower skeleton structure of the sound generating device of the present invention.
- FIG. 7 is a schematic diagram of the assembled three-dimensional structure of the upper frame, the lower frame and the voice coil of the sound generating device of the present invention.
- FIG. 8 is a schematic diagram of the assembled three-dimensional structure of the upper frame, voice coil and upper diaphragm of the sound generating device of the present invention.
- FIG. 9 is a schematic diagram of the assembled three-dimensional structure of the lower frame, voice coil, isolation diaphragm, and lower diaphragm of the sound generating device of the present invention.
- Fig. 10 is a partial structural diagram of the magnetic circuit system of the sound generating device of the present invention.
- the present invention provides a sound generating device 100, which includes a basin frame 1, a vibration system 2 and a magnetic circuit system 3 respectively supported on the basin frame 1, and an upper cover 4, the magnetic
- the circuit system 3 has a magnetic gap 30, and the magnetic circuit system 3 drives the vibration system 2 to vibrate and produce sound.
- the vibration system 2 includes an upper diaphragm 21, a lower diaphragm 22, a voice coil 23, an upper frame 24, a lower frame 25 and an isolation diaphragm 26. Wherein, the upper diaphragm 21, the isolation diaphragm 26, and the lower diaphragm 22 are sequentially spaced from top to bottom.
- the upper diaphragm 21 has a ring shape and is arranged around the magnetic circuit system 3.
- the outer peripheral side of the upper diaphragm 21 is fixed to the side of the basin frame 1 away from the magnetic circuit system 3.
- the inner peripheral side of the upper diaphragm 21 is fixed to the magnetic circuit system 3.
- the upper diaphragm 21 and the basin frame 1 jointly enclose a receiving space 10.
- the side of the upper diaphragm 21 away from the accommodating space 10 communicates with the outside and serves as an upper front cavity 101 where the upper diaphragm 21 emits sound; specifically, the upper cover plate 4 is fixed to the basin
- the side of the frame 1 away from the magnetic circuit system 3, the outer peripheral side of the upper diaphragm 21 is clamped and fixed between the basin frame 1 and the upper cover plate 4, and the upper diaphragm 21,
- the basin frame 1 and the upper cover plate 4 jointly enclose the upper front cavity 101.
- the upper cover plate 4 is provided with a sounding opening 40 penetrating the upper front cavity.
- the sounding opening 40 connects the upper front cavity 101 with Connect with the outside world to achieve sound.
- the upper diaphragm 21 includes a first upper folding ring portion 211 each in a ring shape, and a second upper folding ring portion 212 that surrounds the first upper ring portion 211 and is spaced apart from each other.
- the first upper vibrating portion 213 bent and extended from the outer peripheral side of the first upper folding ring portion 211, the first upper fixing portion 214 bent and extended from the inner peripheral side of the first upper folding ring portion 211,
- the second upper fixing portion 215 bent and extended from the outer peripheral side of the second upper folded ring portion 212, the second upper vibrating portion 216 bent and extended from the inner peripheral side of the second upper folded ring portion 212, and simultaneously
- the cover is fixed to the upper spherical top 217 on the side of the first upper vibrating portion 213 and the second upper vibrating portion 216 away from the lower diaphragm 22.
- the first upper fixing portion 214 is fixed to the magnetic circuit system 3, and the second upper fixing portion 215 is sandwiched and fixed between the basin frame
- the lower diaphragm 22 has a ring shape and is arranged at intervals around the magnetic circuit system 3.
- the lower diaphragm 22 is opposed to the upper diaphragm 21 and is located in the second accommodating space 20.
- the outer peripheral side of the lower diaphragm 22 is fixed to the frame 1 away from the upper diaphragm 21. One side.
- the lower diaphragm 22 includes a ring-shaped lower folded ring portion 221, a lower vibrating portion 222 bent and extended from the inner peripheral side of the lower folded ring portion 221, and a lower portion 222 formed by the lower folded ring portion 221.
- a lower fixing portion 223 extending on the outer periphery and a ring-shaped lower dome 224 covered and fixed on the side of the lower vibrating portion 222 close to the upper diaphragm 21.
- the lower dome 224 is connected to the lower frame 25, and the lower fixing portion 223 is fixed to the side of the basin frame 1 away from the upper diaphragm 21.
- the second upper folding ring portion 212 and the lower folding ring portion 221 are arranged directly opposite to each other. More preferably, the second upper folding ring portion 212 has an arc-shaped structure that is recessed in a direction away from the lower folding ring portion 221, and the lower folding ring portion 221 is facing away from the second upper folding ring portion 212.
- the voice coil 23 is inserted into the magnetic gap 30 to drive the upper diaphragm 21 and the lower diaphragm 22 to vibrate and produce sound.
- the above structure forms a double-diaphragm vibration and sound structure, which effectively increases the effective vibration area (SD) of the vibration system 2 and improves the sounding loudness of the sound emitting device, that is, the effective vibration area of the diaphragm of the sound emitting device 100 ( SD) Under the same conditions, the size of the sound emitting device 100 can be made smaller, which is conducive to the development of miniaturization.
- the upper diaphragm 21 and the lower diaphragm 22 are both arranged around the magnetic circuit system 3, breaking the conventional laminated structure design of the vibration system 2 and the magnetic circuit system 3, so that the magnetic circuit system 3 can be fully utilized
- the height space design of the sound generating device 100 is thicker, which effectively increases the BL value of its magnetic field, thereby improving the driving force to improve the vibration performance of the sound generating device 100 and improve the sound generation performance.
- the upper frame 24 is located in the receiving space 10.
- the upper frame 24 has a ring shape and is arranged at intervals around the magnetic circuit system 3.
- the upper frame 24 is connected to the voice coil 23 and the upper diaphragm 21 respectively, and the voice coil 23 drives the upper frame 24 to drive the upper diaphragm 21 to vibrate.
- the lower frame 25 is located in the receiving space 10.
- the lower frame 25 has a ring shape and is arranged at intervals around the magnetic circuit system 3.
- the lower frame 25 is connected to the lower diaphragm 22, the voice coil 23, and the isolation diaphragm 26, respectively.
- the voice coil 23 simultaneously drives the upper frame 24 and the lower frame 25 to drive the upper diaphragm 21 and the lower diaphragm 22 to vibrate at the same time, so as to realize a double diaphragm vibration and sound structure.
- the isolation diaphragm 26 has a ring shape and is arranged at intervals around the magnetic circuit system 3.
- the isolation diaphragm 26 is arranged at intervals between the upper diaphragm 21 and the lower diaphragm 22, the outer peripheral side of the isolation diaphragm 26 is connected to the frame 1, and the inner portion of the isolation diaphragm 26 The peripheral side is connected to the lower frame 25.
- the upper spherical top 217 and the isolation diaphragm 26 are arranged directly opposite to each other.
- the isolation diaphragm 26 and the lower spherical top 224 are arranged directly opposite each other, and the width of the isolation diaphragm 26 in the vibration direction perpendicular to the upper diaphragm 21 is smaller than that of the lower spherical top 224. The width. This structural arrangement prevents the excessive width of the isolation diaphragm 26 from causing loss of the effective vibration area SD of the lower diaphragm 22 and affecting the acoustic performance.
- the lower diaphragm 22, the lower frame 25, the isolation diaphragm 26, and the basin frame 1 jointly divide the housing space 10 into a lower front cavity 103 for the lower diaphragm 22 to emit sound, and In the rear cavity 102 shared by the upper diaphragm 21 and the lower diaphragm 22.
- the side of the lower diaphragm 22 away from the upper diaphragm 21 communicates with the rear cavity 102 and shares the rear cavity 102 with the upper diaphragm 21.
- the sound hole 120 connects the lower front cavity 103 with the outside to achieve sound.
- the isolation diaphragm 26 isolates the lower front cavity 103 from the receiving space 10 to avoid acoustic short circuit between the rear cavity 102 and the lower front cavity 103.
- the upper frame 24 is connected to the upper diaphragm 21 and the voice coil 23. Specifically, the upper frame 24 is connected to the first upper vibrating part 213.
- the lower frame 25 has a ring shape, and the lower frame 25 is connected to the lower diaphragm 22. Specifically, the lower vibrating portion 222 of the lower diaphragm 22 is connected to the lower frame 25.
- the inner peripheral side of the isolation diaphragm 26 is connected to the lower frame 25.
- the outer peripheral side of the isolation diaphragm 26 is fixed to the basin frame 1.
- the lower diaphragm 22, the lower frame 25, the isolation diaphragm 26, and the basin frame 1 jointly enclose the lower front cavity 103 for the lower diaphragm 22 to emit sound.
- the upper skeleton 24 includes an upper skeleton body 241 arranged at intervals on the outer peripheral side of the magnetic circuit system 3, and the upper skeleton body 241 is bent toward the magnetic circuit system 3 and extends into the magnetic gap 30
- the upper frame body 241 is connected to the upper diaphragm 21. It is worth mentioning that the structure of the voice coil is not limited.
- the voice coil 23 has a rectangular structure with rounded corners, and the upper frame connecting wall 243 is attached to the voice coil. 23 The rounded corners on the outer circumference.
- the upper frame body 241 includes two upper frame bodies 241 which are respectively spaced apart on opposite sides of the voice coil 23.
- the opposite ends of each upper frame body 241 are respectively bent to form two upper frame extension walls 242,
- Each of the upper frame extension walls 242 is bent and extended to form an upper frame connecting wall 243, that is, a total of four upper frame connecting walls 243 are formed, and the four upper frame connecting walls 243 are respectively arranged on the The four rounded corners of the voice coil 23.
- the above structure symmetrically supports the voice coil 23, the support is more stable, and the vibration reliability is better.
- the upper skeleton body 241 includes an upper skeleton body wall 2411, which is bent and extended from an end of the upper skeleton body wall 2411 close to the upper diaphragm 21 in a direction perpendicular to the vibration direction of the upper diaphragm 21.
- the upper frame extension wall 242 is bent and extended from the upper frame body wall 2411.
- the upper reinforcing wall 2412 is connected to the upper diaphragm 21, specifically, the upper reinforcing wall 2412 is connected to the upper vibrating portion 213 of the upper diaphragm 21.
- the upper reinforcing wall 2412 is provided to increase the connection strength between the upper skeleton body 241 and the upper diaphragm 21 by increasing the coupling area, thereby improving the vibration reliability.
- the lower frame 25 includes a ring-shaped lower frame body 251 arranged around the magnetic circuit system 3 at intervals, and a frame that is bent from the lower frame body 251 to the magnetic circuit system 3 and extends into the magnetic gap 30.
- the lower frame bracket 252 and the arc-shaped lower frame connecting wall 253 extending from the lower frame bracket 252 are bent and extended.
- the end of the lower frame body 251 close to the upper diaphragm 21 is connected to the side of the isolation diaphragm 26 away from the upper diaphragm 21; the end of the lower frame body 251 away from the upper diaphragm 21 is connected to The lower diaphragm 22 is connected to a side close to the upper diaphragm 21.
- the lower frame connecting wall 253 is attached to the rounded corners of the outer circumference of the voice coil 23.
- the lower frame connecting wall 253 and the upper frame connecting wall 243 are spaced apart.
- the voice coil 23 drives the lower frame 25 to vibrate
- the lower frame 25 drives the lower diaphragm 22 to vibrate, so that the lower diaphragm 22 vibrates and emits sound at the same time.
- the lower frame supports 252 include four, the lower frame connecting walls 253 include four, and each lower frame support 252 is bent and extended to form a lower frame connecting wall 253.
- the lower frame connecting walls 253 are respectively provided at the four rounded corners of the voice coil 23.
- the lower diaphragm 22, the lower skeleton 25, the isolation diaphragm 26, and the lower basin frame 1 collectively enclose the lower front cavity 103.
- the lower frame body 251 includes a lower frame body wall 2511, and an end of the lower frame body wall 2511 that is close to the isolation diaphragm 26 is bent and extended along a vibration direction perpendicular to the upper diaphragm 21.
- the first lower reinforcement wall 2512 and the second lower reinforcement wall 2513 extending from the end of the lower skeleton body wall 2511 close to the lower diaphragm 22 in a bending direction perpendicular to the vibration direction.
- the lower frame bracket 252 is bent and extended from the lower frame body wall 2511.
- the first lower reinforcement wall 2512 is connected to the isolation diaphragm 26.
- the second lower reinforcement wall 2513 is connected to the lower diaphragm 22.
- the second lower reinforcement wall 2513 is connected to the lower spherical top 224.
- the arrangement of the first lower reinforcing wall 2512 and the second lower reinforcing wall 2513 increases the connection strength of the lower frame body 251 and the isolation diaphragm 26 by increasing the joint area, and the lower frame body 251
- the connection strength with the lower diaphragm 22 further improves the vibration reliability.
- first lower reinforcement wall 2512 and the second lower reinforcement wall 2513 are respectively located on two different sides of the lower skeleton body wall 2511.
- the basin frame 1 includes a bottom wall 11 that fixedly supports the magnetic circuit system 3, a ring-shaped side wall 12 extending from the periphery of the bottom wall 11, and a side wall extending from the side wall 12 to An annular support wall 13 extending in the direction close to the magnetic circuit system 3.
- the outer peripheral side of the lower diaphragm 22 is fixed to the side wall 12, specifically, the lower fixing portion 223 of the lower diaphragm 22 is fixed to the side wall 12, and makes the lower diaphragm 22 and the
- the bottom wall 11 is arranged at intervals to provide a vibration space for the lower diaphragm 22.
- the outer peripheral side of the upper diaphragm 21 is fixed to an end of the side wall 12 away from the bottom wall 11, specifically, the second upper fixing portion 215 of the upper diaphragm 21 is fixed to the side wall 12 One end away from the bottom wall 11.
- the sound hole 120 penetrates the side wall 12 and is located on the side of the supporting wall 13 close to the bottom wall 11.
- the side wall 12 includes a first side wall 121 bent and extended from the periphery of the bottom wall 11 and a second side wall 122 extending from the first side wall 121 in a direction away from the bottom wall 11,
- the supporting wall 13 is bent and extended from the second side wall 122.
- the outer circumferential side of the upper diaphragm 21, that is, the second upper fixing portion 215 is fixed to the end of the second side wall 122 away from the bottom wall 11; the outer circumferential side of the lower diaphragm 22, that is, the lower fixing The portion 223 is sandwiched and fixed between the first side wall 121 and the second side wall 122.
- the sound hole 120 penetrates the second side wall 122 and is located on the side of the supporting wall 13 close to the bottom wall 11.
- the outer peripheral side of the isolation diaphragm 26 is fixed to the supporting wall 13 of the basin frame 1. At this time, the lower diaphragm 22, the lower frame 25, the isolation diaphragm 26, and the second side wall 122 collectively enclose the lower front cavity 103 for the lower diaphragm 22 to emit sound.
- the magnetic circuit system 3 includes a magnetic yoke 31 supported on the bottom wall 11, a main magnetic steel 32 fixed to the magnetic yoke 31 and a secondary magnetic steel 33 surrounding the main magnetic steel 32 respectively.
- the secondary magnet 33 is spaced from the main magnet 32 to form the magnetic gap 30.
- the auxiliary magnet 33 is provided with a relief opening 330, and both the upper frame 24 and the lower frame 25 extend into the magnetic gap 30 through the relief opening 330 and are connected to the voice coil 23. Specifically, the upper frame extension wall 242 of the upper frame 24 extends into the magnetic gap 30 through the relief opening 330; the lower frame support 252 of the lower frame 25 passes through the relief opening 330 330 extends into the magnetic gap 30.
- the first upper fixing portion 214 of the upper diaphragm 21 is fixed to the side of the auxiliary magnetic steel 33 away from the yoke 31.
- the auxiliary magnet 33 includes first auxiliary magnets 331 arranged at intervals on opposite sides of the main magnet 32 and second auxiliary magnets 331 arranged at intervals on the other opposite sides of the main magnet 32. 332.
- the adjacent first secondary magnet 331 and the second secondary magnet 332 are arranged at intervals to form the relief opening 330.
- the magnetic circuit system 3 also includes a magnetic conductive plate 34 covering the secondary magnetic steel 31, and the magnetic conductive plate 34 presses the inner peripheral side of the upper diaphragm 21, that is, the first upper fixing portion 214 On the secondary magnetic steel 31, the fixing strength of the upper diaphragm 21 is strengthened to improve reliability.
- the magnetic conductive plate 34 is arranged in a flat plate shape, and the magnetic conductive plate 34 covers the main magnetic steel 32 and the magnetic gap 30. In this embodiment, the magnetic conductive plate 34 abuts against the main magnet 32.
- the end of the secondary magnetic steel 33 away from the yoke 31 is in a chamfered structure
- the first upper folding ring portion 211 is set right at the position of the chamfering structure
- the first upper folding ring The portion 211 has an arc-shaped structure that is recessed in a direction 3 away from the magnetic circuit system. This structure utilizes the chamfered structure to provide a place for the vibration of the first upper folded ring portion 211, so that the first upper folded ring portion 211 has a larger vibration space and improves the effective vibration amplitude.
- the sound device of the present invention designs the vibration system and the magnetic circuit system into a parallel structure from a stacked structure, that is, the vibration system is arranged around the magnetic circuit system, so that the vibration system at the same height
- the magnetic circuit system can effectively utilize the height space of the sound generating device and be designed to be thicker, thereby effectively increasing the magnetic field BL value, making the magnetic circuit system greater driving force, improving the vibration performance of the vibration system, and greatly
- the acoustic performance of the vibration system is greatly improved; at the same time, the high vibration direction of the vibration system is counted as a double-diaphragm structure of the upper and lower diaphragms, so that the upper and lower diaphragms pass through the upper front cavity and the lower front cavity respectively.
- the cavity emits sound and shares the same rear cavity.
- This structure effectively increases the effective vibration area (SD) of the diaphragm of the vibration system by making full use of the height space of the sounding device, and improves the sounding loudness of the sounding device, that is, the vibration of the sounding device.
- SD effective vibration area
- the size of the sound generating device can be made smaller.
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- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
本发明提供了一种发声器件,其包括盆架、振动***和磁路***,振动***包括呈环状的上振膜、下振膜、音圈、上骨架、下骨架及隔离振膜,上振膜固定于盆架;下振膜环绕磁路***间隔设置,下振膜的外周侧固定于盆架;上骨架分别与上振膜和音圈连接;下骨架分别与下振膜和音圈连接;隔离振膜的外周侧与盆架本体连接,其内周侧与下骨架连接。与相关技术相比,本发明的发声器件声学响度更高,声学性能更好。
Description
本发明涉及电声转换领域,尤其涉及一种运用于电子音箱产品的发声器件。
相关技术的发声器件包括盆架、固定于所述盆架的振动***和具有磁间隙的磁路***,所述磁路***驱动所述振动***振动发声,所述振动***包括固定于所述盆架用于振动发声的振膜,贴合于所述振膜的球顶靠近所述磁路***一侧的骨架以及插设于所述磁间隙并与骨架连接以驱动所述振膜振动的音圈。
然而,相关技术的发声器件中,所述振动***和所述磁路***呈上下堆叠结构,在相同高度的发声器件中则限制了磁路***的结构,从而限制了其磁场的BL值;另外,所述发声器件仅有一个振膜结构,振膜的有效振动面积(SD)较小,从而限制了所述发声器件的响度。
因此,实有必要提供一种新的发声器件解决上述技术问题。
本发明的目的在于提供一种响度大且声学性能更优的发声器件。
为了达到上述目的,本发明提供了一种发声器件,其包括盆架、分别支撑于所述盆架的振动***和驱动所述振动***振动发声的磁路***,所述磁路***具有磁间隙,所述振动***包括:
上振膜,所述上振膜呈环状并环绕所述磁路***设置,所述上振膜固定于所述盆架;
下振膜,所述下振膜呈环状且环绕所述磁路***间隔设置,所述下振膜与所述上振膜间隔相对,所述下振膜的外周侧固定于所述盆架;
音圈,所述音圈插设于所述磁间隙内用以驱动所述上振膜和所述下振膜振动发声;
上骨架,所述上骨架呈环状并环绕所述磁路***间隔设置,所述上骨架分别与所述上振膜和所述音圈连接;
下骨架,所述下骨架呈环状并环绕所述磁路***间隔设置,所述下骨架分别与所述下振膜和所述音圈连接,所述音圈同时驱动所述上骨架和所述下骨架以带动所述上振膜和所述下振膜同时振动;以及,
隔离振膜,所述隔离振膜呈环状并环绕所述磁路***间隔设置,所述隔离振膜间隔设置于所述上振膜和所述下振膜之间,所述隔离振膜的外周侧与所述盆架连接,所述隔离振膜的内周侧与所述下骨架连接。
优选的,所述上骨架包括间隔设置于所述磁路***外周侧的上骨架本体、由所述上骨架本体向所述磁路***弯折延伸至所述磁间隙内的上骨架延伸壁以及由所述上骨架延伸壁弯折延伸的呈弧形的上骨架连接壁;所述上骨架本体连接于所述上振膜;所述音圈呈带圆角的矩形结构,所述上骨架连接壁贴合于所述音圈外周侧的圆角处。
优选的,所述上骨架本体包括两个且分别间隔设于所述音圈的相对两侧,每一所述上骨架本体的相对两端分别弯折形成两个所述上骨架延伸壁,每一所述上骨架延伸壁均弯折延伸形成一所述上骨架连接壁,四个所述上骨架连接壁分别设于所述音圈的四个圆角处。
优选的,所述上骨架本体包括上骨架本体壁和由所述上骨架本体壁靠近所述上振膜的一端沿垂直于所述上振膜的振动方向弯折延伸的上加强壁;所述上骨架延伸壁由所述上骨架本体壁弯折延伸,所述上加强壁与所述上振膜连接。
优选的,所述下骨架包括间隔环绕所述磁路***设置的呈环状的下骨架本体、由所述下骨架本体向所述磁路***弯折延伸至所述磁间隙内的下骨架支架以及由所述下骨架支架弯折延伸的呈弧形的下骨架连接壁;所述下骨架本体靠近所述上振膜的一端与所述隔离振膜远离所述上振膜的一侧连接,所述下骨架本体远离所述上振膜的一端与所述下振膜靠近所述上振膜的一侧连接,所述下骨架连接壁贴合于所述音圈外周侧的圆角处且与所述上骨架连接壁间隔设置。
优选的,所述下骨架支架包括四个,所述下骨架连接壁包括四个,每一所述下骨架支架均弯折延伸形成一所述下骨架连接壁,四个所述下骨架连接壁分别设于所述音圈的四个圆角处。
优选的,所述下骨架本体包括下骨架本体壁、由所述下骨架本体壁靠近所述隔离振膜的一端沿垂直于所述上振膜的振动方向弯折延伸的第一下加强壁、以及由所述下骨架本体壁靠近所述下振膜的一端沿垂直于所述振动方向弯折延伸的第二下加强壁,所述第一下加强壁与所述第二下加强壁分别位于所述下骨架本体壁的相异两侧;所述第一下加强壁与所述隔离振膜连接;所述第二下加强壁与所述下振膜连接;所述下骨架支架由所述下骨架本体壁弯折延伸。
优选的,所述上振膜包括均呈环状的第一上折环部、环绕所述第一上折环部并相互间隔的呈环状的第二上折环部、由所述第一上折环部的外周侧弯折延伸的第一上振动部、由所述第一上折环部的内周侧弯折延伸的第一上固定部、由所述第二上折环部的外周侧弯折延伸的第二上固定部、由所述第二上折环部的内周侧弯折延伸的第二上振动部以及同时盖设固定于所述第一上振动部和所述第二上振动部远离所述下振膜一侧的上球顶部,所述第一上固定部固定于所述磁路***,所述第二上固定部固定于所述盆架;所述上骨架连接于所述第一上振动部。
优选的,所述上球顶部与所述隔离振膜间隔正对设置。
优选的,所述下振膜包括呈环状的下折环部、由所述下折环部的内周侧弯折延伸的下振动部、由所述下折环部的外周则弯折延伸的下固定部以及盖设固定于所述下振动部靠近所述上振膜一侧的呈环状的下球顶部;所述下球顶部与所述下骨架连接,所述下固定部固定于所述盆架。
优选的,所述隔离振膜与所述下球顶部间隔正对设置,且所述隔离振膜沿垂直于所述上振膜的振动方向的宽度小于所述下球顶部的宽度。
优选的,所述第二上折环部与所述下折环部正对设置。
优选的,所述第二上折环部呈向远离所述下折环部方向凹陷形成的弧形结构,所述下折环部呈向远离所述第二上折环部方向凹陷形成的弧形结构。
优选的,所述盆架包括固定支撑所述磁路***的底壁、由所述底壁周缘弯折延伸的呈环状的侧壁以及由所述侧壁向靠近所述磁路***方向延伸的呈环状的支撑壁;所述下振膜的外周侧固定于所述侧壁并使所述下振膜与所述底壁间隔设置,所述上振膜的外周侧固定于所述侧壁远离所述底壁的一端,所述隔离振膜的外周侧固定于所述支撑壁。
优选的,所述磁路***包括支撑于所述底壁的磁轭和分别固定于所述磁轭的主磁钢以及环绕所述主磁钢的副磁钢,所述副磁钢与所述主磁钢间隔形成所述磁间隙;所述副磁钢设有让位口,所述上骨架和所述下骨架均经所述让位口延伸至所述磁间隙内并与所述音圈连接;所述第一上固定部固定于所述副磁钢远离所述磁轭的一侧。
优选的,所述副磁钢包括间隔设置于所述主磁钢相对两侧的第一副磁钢和间隔设置于所述主磁钢另外相对两侧的第二副磁钢,相邻的所述第一副磁钢和所述第二副磁钢间隔形成所述让位口。
优选的,所述磁路***还包括盖设于所述副磁钢的导磁板,所述导磁板将所述第一上固定部压设于所述副磁钢上。
优选的,所述导磁板抵接于所述主磁钢。
优选的,所述副磁钢远离所述磁轭的一端呈倒角结构,所述第一上折环部正对于该倒角结构的位置设置,且所述第一上折环部呈向远离所述磁路***方向凹陷形成的弧形结构。
与相关技术相比,本发明的发声器件将所述振动***与所述磁路***由堆叠结构设计为平行结构,即将所述振动***环绕于所述磁路***设置,从而使得在同样高度的发声器件中,所述磁路***可以有效利用了发声器件的高度空间而设计更厚,从而有效提高磁场BL值,使得磁路***驱动力更大,提高了振动***的振动性能,并极大程度的提高了振动***的声学性能;同时,将振动***设高振动方向计为上振膜和下振膜的双振膜结构,使得上振膜和下振膜分别通过上前腔和下前腔发声并共用同一后腔,该结构在充分利用发声器件的高度空间有效的提高了振动***的振膜有效振动面积(SD),提高了发声器件的发声响度,也即在发声器件的振膜有效振动面积(SD)相同的情况下,可使发声器件尺寸更小。
为了更清楚地说明本发明实施例中的技术方案,下面将对实施例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获得其它的附图,其中:
图1为本发明发声器件的立体结构示意图;
图2为本发明发声器件的部分立体结构分解图;
图3为沿图1中A-A线的剖示图;
图4为图3中B所示部分的放大图;
图5为本发明发声器件的所述上骨架结构示意图;
图6为本发明发声器件的所述下骨架结构示意图;
图7为本发明发声器件的上骨架、下骨架及音圈的组装立体结构示意图;
图8为本发明发声器件的上骨架、音圈及上振膜的组装立体结构示意图;
图9为本发明发声器件的下骨架、音圈、隔离振膜及下振膜的组装立体结构示意图;
图10为本发明发声器件的磁路***的部分结构示意图。
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做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
请同时参阅图1-10,本发明提供了一种发声器件100,其包括盆架1、分别支撑于所述盆架1的振动***2和磁路***3以及上盖板4,所述磁路***3具有磁间隙30,所述磁路***3驱动所述振动***2振动发声。
所述振动***2包括上振膜21、下振膜22、音圈23、上骨架24、下骨架25以及隔离振膜26。其中,所述上振膜21、所述隔离振膜26以及所述下振膜22由上向下依次间隔设置。
所述上振膜21呈环状并环绕所述磁路***3设置。
所述上振膜21的外周侧固定于所述盆架1远离所述磁路***3的一侧。所述上振膜21的内周侧固定于所述磁路***3。所述上振膜21和所述盆架1共同围成收容空间10。
所述上振膜21远离所述收容空间10的一侧与外界连通并充当所述上振膜21发声的上前腔101;具体的,所述上盖板4盖设于固定于所述盆架1远离所述磁路***3的一侧,所述上振膜21的外周侧夹设固定于所述盆架1和所述上盖板4之间,且所述上振膜21、所述盆架1以及所述上盖板4共同围成所述上前腔101,所述上盖板4设有贯穿其上的发声口40,所述发声口40将所述上前腔101与外界连通,实现发声。本实施方式中,所述上振膜21包括均呈环状的第一上折环部211、环绕所述第一上折环部211并相互间隔的呈环状的第二上折环部212、由所述第一上折环部211的外周侧弯折延伸的第一上振动部213、由所述第一上折环部211的内周侧弯折延伸的第一上固定部214、由所述第二上折环部212的外周侧弯折延伸的第二上固定部215、由所述第二上折环部212的内周侧弯折延伸的第二上振动部216以及同时盖设固定于所述第一上振动部213和所述第二上振动部216远离所述下振膜22一侧的上球顶部217。所述第一上固定部214固定于所述磁路***3,所述第二上固定部215夹设固定于所述盆架1和所述上盖板4之间。所述上骨架24连接于所述第一上振动部213。
所述下振膜22呈环状且环绕所述磁路***3间隔设置。
所述下振膜22与所述上振膜21间隔相对并位于所述第二收容空间20内,所述下振膜22的外周侧固定于所述盆架1远离所述上振膜21的一侧。
具体的,所述下振膜22包括呈环状的下折环部221、由所述下折环部221的内周侧弯折延伸的下振动部222和由所述下折环部221的外周则弯折延伸的下固定部223以及盖设固定于所述下振动部222靠近所述上振膜21一侧的呈环状的下球顶部224。所述下球顶部224与所述下骨架25连接,所述下固定部223固定于所述盆架1远离所述上振膜21的一侧。
本实施方式中,所述第二上折环部212与所述下折环部221正对设置。更优的,所述第二上折环部212呈向远离所述下折环部221方向凹陷形成的弧形结构,所述下折环部221呈向远离所述第二上折环部212方向凹陷形成的弧形结构。该结构有效的利用于所述发声器件100的高度空间,使得所述上振膜21和所述下振膜22具有更大的振动空间,振动性能更优。
所述音圈23插设于所述磁间隙30内用以驱动所述上振膜21和所述下振膜22振动发声。上述结构形成双振膜振动发声结构,有效的提高了振动***2的振动有效振动面积(SD),提高了发声器件的发声响度,也即在所述发声器件100的振膜有效振动面积(SD)相同的情况下,可使发声器件100尺寸更小,有利于微型化发展。同时,所述上振膜21和所述下振膜22均环绕所述磁路***3设置,打破了振动***2与磁路***3的常规叠层结构设计,使得磁路***3可充分利用发声器件100的高度空间设计更厚,有效提高其磁场的BL值,进而改善驱动力以提高了发声器件100的振动性能,改善发声性能。
所述上骨架24位于所述收容空间10内。所述上骨架24呈环状并环绕所述磁路***3间隔设置。
所述上骨架24分别与所述音圈23和所述上振膜21连接,所述音圈23驱动所述上骨架24以带动所述上振膜21振动。
所述下骨架25位于所述收容空间10内。所述下骨架25呈环状并环绕所述磁路***3间隔设置。所述下骨架25分别与所述下振膜22、所述音圈23及所述隔离振膜26连接。所述音圈23同时驱动所述上骨架24和所述下骨架25以带动所述上振膜21和所述下振膜22同时振动,实现双振膜振动发声结构。
所述隔离振膜26呈环状并环绕所述磁路***3间隔设置。
所述隔离振膜26间隔设置于所述上振膜21和所述下振膜22之间,所述隔离振膜26的外周侧与所述盆架1连接,所述隔离振膜26的内周侧与所述下骨架25连接。
更优的,所述上球顶部217与所述隔离振膜26间隔正对设置。
更优的,所述隔离振膜26与所述下球顶部224间隔正对设置,且所述隔离振膜26沿垂直于所述上振膜21的振动方向的宽度小于所述下球顶部224的宽度。该结构设置避免所述隔离振膜26宽度过大造成下振膜22的振膜有效振动面积SD损失而影响声学性能。
所述下振膜22、所述下骨架25、所述隔离振膜26以及所述盆架1共同将所述收容空间10分隔成用于所述下振膜22发声的下前腔103以及用于所述上振膜21和所述下振膜22共用的后腔102。具体的,所述下振膜22远离所述上振膜21的一侧与所述后腔102连通并与所述上振膜21共用所述后腔102。所述发声孔120将所述下前腔103与外界连通,实现发声。
也就是说,所述隔离振膜26从所述收容空间10内隔离出所述下前腔103,避免了所述后腔102与所述下前腔103声短路。
所述上骨架24连接所述上振膜21和所述音圈23,具体的,所述上骨架24连接于所述第一上振动部213。
所述下骨架25呈环状,所述下骨架25与所述下振膜22连接,具体的,所述下振膜22的所述下振动部222与所述下骨架25连接。
所述隔离振膜26的内周侧连接于所述下骨架25。所述隔离振膜26的外周侧固定于所述盆架1。此时,所述下振膜22、所述下骨架25、所述隔离振膜26以及所述盆架1共同围成用于所述下振膜22发声的所述下前腔103。
具体的,所述上骨架24包括间隔设置于所述磁路***3外周侧的上骨架本体241、由所述上骨架本体241向所述磁路***3弯折延伸至所述磁间隙30内的上骨架延伸壁242以及由所述上骨架延伸壁242弯折延伸的呈弧形的上骨架连接壁243。
所述上骨架本体241连接于所述上振膜21。值得一提的是,音圈的结构形式是不限,比如,在本实施方式中,所述音圈23呈带圆角的矩形结构,所述上骨架连接壁243贴合于所述音圈23外周侧的圆角处。
所述上骨架本体241包括两个且分别间隔设于所述音圈23的相对两侧,每一所述上骨架本体241的相对两端分别弯折形成两个所述上骨架延伸壁242,每一所述上骨架延伸壁242均弯折延伸形成一所述上骨架连接壁243,即共形成四个所述上骨架连接壁243,四个所述上骨架连接壁243分别设于所述音圈23的四个圆角处。上述结构对称支撑所所述音圈23,支撑更稳定,振动可靠性更好。
更优的,所述上骨架本体241包括上骨架本体壁2411、由所述上骨架本体壁2411靠近所述上振膜21的一端沿垂直于所述上振膜21的振动方向弯折延伸的上加强壁2412。所述上骨架延伸壁242由所述上骨架本体壁2411弯折延伸。
所述上加强壁2412与所述上振膜21连接,具体为,所述上加强壁2412与所述上振膜21的上振动部213连接。所述上加强壁2412设置通过增加结合面积以增加了所述上骨架本体241与所述上振膜21的连接强度,提高振动可靠性。
所述下骨架25包括间隔环绕所述磁路***3设置的呈环状的下骨架本体251、由所述下骨架本体251向所述磁路***3弯折延伸至所述磁间隙30内的下骨架支架252以及由所述下骨架支架252弯折延伸的呈弧形的下骨架连接壁253。
所述下骨架本体251靠近所述上振膜21的一端与所述隔离振膜26远离所述上振膜21的一侧连接;所述下骨架本体251远离所述上振膜21的一端与所述下振膜22靠近所述上振膜21的一侧连接。
所述下骨架连接壁253贴合于所述音圈23外周侧的圆角处。所述下骨架连接壁253与所述上骨架连接壁243间隔设置。也就是说,所述音圈23带动下骨架25振动,下骨架25带动下振膜22振动,从而实现下振膜22的同时振动发声。
本实施方式中,所述下骨架支架252包括四个,所述下骨架连接壁253包括四个,每一所述下骨架支架252均弯折延伸形成一所述下骨架连接壁253,四个所述下骨架连接壁253分别设于所述音圈23的四个圆角处。上述结构对称支撑所所述音圈23,支撑更稳定,振动可靠性更好。
此时,所述下振膜22、所述下骨架25、所述隔离振膜26以及所述下盆架1共同围成所述下前腔103。
更优的,所述下骨架本体251包括下骨架本体壁2511、由所述下骨架本体壁2511靠近所述隔离振膜26的一端沿垂直于所述上振膜21的振动方向弯折延伸的第一下加强壁2512、以及由所述下骨架本体壁2511靠近所述下振膜22的一端沿垂直于所述振动方向弯折延伸的第二下加强壁2513。其中,所述下骨架支架252由所述下骨架本体壁2511弯折延伸。所述第一下加强壁2512与所述隔离振膜26连接。所述第二下加强壁2513与所述下振膜22连接,具体的,所述第二下加强壁2513与所述下球顶部224连接。
所述第一下加强壁2512与所述第二下加强壁2513的设置通过增加结合面积分别增加了所述下骨架本体251与所述隔离振膜26的连接强度,以及所述下骨架本体251与所述下振膜22的连接强度,从而进一步地提高振动可靠性。
本实施方式中,所述第一下加强壁2512与所述第二下加强壁2513分别位于所述下骨架本体壁2511的相异两侧。
本实施方式中,所述盆架1包括固定支撑所述磁路***3的底壁11、由所述底壁11周缘弯折延伸的呈环状的侧壁12以及由所述侧壁12向靠近所述磁路***3方向延伸的呈环状的支撑壁13。
所述下振膜22的外周侧固定于所述侧壁12,具体为,所述下振膜22的下固定部223固定于所述侧壁12,并使所述下振膜22与所述底壁11间隔设置,为下振膜22提供振动空间。
所述上振膜21的外周侧固定于所述侧壁12远离所述底壁11的一端,具体为,所述上振膜21的所述第二上固定部215固定于所述侧壁12远离所述底壁11的一端。
所述发声孔120贯穿所述侧壁12设置且位于所述支撑壁13靠近所述底壁11的一侧。
具体的,所述侧壁12包括由所述底壁11周缘弯折延伸的第一侧壁121和由所述第一侧壁121向远离所述底壁11方向延伸的第二侧壁122,所述支撑壁13由所述第二侧壁122弯折延伸。
所述上振膜21的外周侧,即所述第二上固定部215固定于所述第二侧壁122远离所述底壁11的一端;所述下振膜22的外周侧,即下固定部223夹设固定于所述第一侧壁121与所述第二侧壁122之间。所述发声孔120贯穿所述第二侧壁122设置且位于所述支撑壁13靠近所述底壁11的一侧。
所述隔离振膜26的外周侧固定于所述盆架1的支撑壁13。此时,所述下振膜22、所述下骨架25、所述隔离振膜26以及所述第二侧壁122共同围成用于所述下振膜22发声的所述下前腔103。
所述磁路***3包括支撑于所述底壁11的磁轭31和分别固定于所述磁轭31的主磁钢32以及环绕所述主磁钢32的副磁钢33。所述副磁钢33与所述主磁钢32间隔形成所述磁间隙30。
所述副磁钢33设有让位口330,所述上骨架24和所述下骨架25均经所述让位口330延伸至所述磁间隙30内并与所述音圈23连接。具体为,所述上骨架24的所述上骨架延伸壁242经所述让位口330延伸至所述磁间隙30内;所述下骨架25的所述下骨架支架252经所述让位口330延伸至所述磁间隙30内。
所述上振膜21的所述第一上固定部214固定于所述副磁钢33远离所述磁轭31的一侧。
更优的,所述副磁钢33包括间隔设置于所述主磁钢32相对两侧的第一副磁钢331和间隔设置于所述主磁钢32另外相对两侧的第二副磁钢332,相邻的所述第一副磁钢331和所述第二副磁钢332间隔设置形成所述让位口330。
所述磁路***3还包括盖设于所述副磁钢31的导磁板34,所述导磁板34将所述上振膜21的内周侧,即第一上固定部214压设于所述副磁钢31上,加强上振膜21的固定强度,提高可靠性。
为了减少磁路***30的磁场外泄,将所述导磁板34设置为平板状,并使导磁板34覆盖所述主磁钢32和所述磁间隙30。本实施方式中,所述导磁板34抵接于所述主磁钢32。
更优的,所述副磁钢33远离所述磁轭31的一端呈倒角结构,所述第一上折环部211正对于该倒角结构的位置设置,且所述第一上折环部211呈向远离所述磁路***3方向凹陷形成的弧形结构。该结构利用该倒角结构为所述第一上折环部211的振动提供让位,使所述第一上折环部211具有更大的振动空间,提高有效振动幅度。
与相关技术相比,本发明的发声器件将所述振动***与所述磁路***由堆叠结构设计为平行结构,即将所述振动***环绕于所述磁路***设置,从而使得在同样高度的发声器件中,所述磁路***可以有效利用了发声器件的高度空间而设计更厚,从而有效提高磁场BL值,使得磁路***驱动力更大,提高了振动***的振动性能,并极大程度的提高了振动***的声学性能;同时,将振动***设高振动方向计为上振膜和下振膜的双振膜结构,使得上振膜和下振膜分别通过上前腔和下前腔发声并共用同一后腔,该结构在充分利用发声器件的高度空间有效的提高了振动***的振膜有效振动面积(SD),提高了发声器件的发声响度,也即在发声器件的振膜有效振动面积(SD)相同的情况下,可使发声器件尺寸更小。
以上所述的仅是本发明的实施方式,在此应当指出,对于本领域的普通技术人员来说,在不脱离本发明创造构思的前提下,还可以做出改进,但这些均属于本发明的保护范围。
Claims (19)
- 一种发声器件,其包括盆架、分别支撑于所述盆架的振动***和驱动所述振动***振动发声的磁路***,所述磁路***具有磁间隙,其特征在于,所述振动***包括:上振膜,所述上振膜呈环状并环绕所述磁路***设置,所述上振膜固定于所述盆架;下振膜,所述下振膜呈环状且环绕所述磁路***间隔设置,所述下振膜与所述上振膜间隔相对,所述下振膜的外周侧固定于所述盆架;音圈,所述音圈插设于所述磁间隙内用以驱动所述上振膜和所述下振膜振动发声;上骨架,所述上骨架呈环状并环绕所述磁路***间隔设置,所述上骨架分别与所述上振膜和所述音圈连接;下骨架,所述下骨架呈环状并环绕所述磁路***间隔设置,所述下骨架分别与所述下振膜和所述音圈连接,所述音圈同时驱动所述上骨架和所述下骨架以带动所述上振膜和所述下振膜同时振动;以及,隔离振膜,所述隔离振膜呈环状并环绕所述磁路***间隔设置,所述隔离振膜间隔设置于所述上振膜和所述下振膜之间,所述隔离振膜的外周侧与所述盆架连接,所述隔离振膜的内周侧与所述下骨架连接。
- 根据权利要求1所述的发声器件,其特征在于,所述上骨架包括间隔设置于所述磁路***外周侧的上骨架本体、由所述上骨架本体向所述磁路***弯折延伸至所述磁间隙内的上骨架延伸壁以及由所述上骨架延伸壁弯折延伸的呈弧形的上骨架连接壁;所述上骨架本体连接于所述上振膜;所述音圈呈带圆角的矩形结构,所述上骨架连接壁贴合于所述音圈外周侧的圆角处。
- 根据权利要求2所述的发声器件,其特征在于,所述上骨架本体包括两个且分别间隔设于所述音圈的相对两侧,每一所述上骨架本体的相对两端分别弯折形成两个所述上骨架延伸壁,每一所述上骨架延伸壁均弯折延伸形成一所述上骨架连接壁,四个所述上骨架连接壁分别设于所述音圈的四个圆角处。
- 根据权利要求2所述的发声器件,其特征在于,所述上骨架本体包括上骨架本体壁和由所述上骨架本体壁靠近所述上振膜的一端沿垂直于所述上振膜的振动方向弯折延伸的上加强壁;所述上骨架延伸壁由所述上骨架本体壁弯折延伸,所述上加强壁与所述上振膜连接。
- 根据权利要求1所述的发声器件,其特征在于,所述下骨架包括间隔环绕所述磁路***设置的呈环状的下骨架本体、由所述下骨架本体向所述磁路***弯折延伸至所述磁间隙内的下骨架支架以及由所述下骨架支架弯折延伸的呈弧形的下骨架连接壁;所述下骨架本体靠近所述上振膜的一端与所述隔离振膜远离所述上振膜的一侧连接,所述下骨架本体远离所述上振膜的一端与所述下振膜靠近所述上振膜的一侧连接,所述下骨架连接壁贴合于所述音圈外周侧的圆角处且与所述上骨架连接壁间隔设置。
- 根据权利要求5所述的发声器件,其特征在于,所述下骨架支架包括四个,所述下骨架连接壁包括四个,每一所述下骨架支架均弯折延伸形成一所述下骨架连接壁,四个所述下骨架连接壁分别设于所述音圈的四个圆角处。
- 根据权利要求5所述的发声器件,其特征在于,所述下骨架本体包括下骨架本体壁、由所述下骨架本体壁靠近所述隔离振膜的一端沿垂直于所述上振膜的振动方向弯折延伸的第一下加强壁、以及由所述下骨架本体壁靠近所述下振膜的一端沿垂直于所述振动方向弯折延伸的第二下加强壁,所述第一下加强壁与所述第二下加强壁分别位于所述下骨架本体壁的相异两侧;所述第一下加强壁与所述隔离振膜连接;所述第二下加强壁与所述下振膜连接;所述下骨架支架由所述下骨架本体壁弯折延伸。
- 根据权利要求1所述的发声器件,其特征在于,所述上振膜包括均呈环状的第一上折环部、环绕所述第一上折环部并相互间隔的呈环状的第二上折环部、由所述第一上折环部的外周侧弯折延伸的第一上振动部、由所述第一上折环部的内周侧弯折延伸的第一上固定部、由所述第二上折环部的外周侧弯折延伸的第二上固定部、由所述第二上折环部的内周侧弯折延伸的第二上振动部以及同时盖设固定于所述第一上振动部和所述第二上振动部远离所述下振膜一侧的上球顶部,所述第一上固定部固定于所述磁路***,所述第二上固定部固定于所述盆架;所述上骨架连接于所述第一上振动部。
- 根据权利要求8所述的发声器件,其特征在于,所述上球顶部与所述隔离振膜间隔正对设置。
- 根据权利要求8所述的发声器件,其特征在于,所述下振膜包括呈环状的下折环部、由所述下折环部的内周侧弯折延伸的下振动部、由所述下折环部的外周则弯折延伸的下固定部以及盖设固定于所述下振动部靠近所述上振膜一侧的呈环状的下球顶部;所述下球顶部与所述下骨架连接,所述下固定部固定于所述盆架之间。
- 根据权利要求10所述的发声器件,其特征在于,所述隔离振膜与所述下球顶部间隔正对设置,且所述隔离振膜沿垂直于所述上振膜的振动方向的宽度小于所述下球顶部的宽度。
- 根据权利要求10所述的发声器件,其特征在于,所述第二上折环部与所述下折环部正对设置。
- 根据权利要求12所述的发声器件,其特征在于,所述第二上折环部呈向远离所述下折环部方向凹陷形成的弧形结构,所述下折环部呈向远离所述第二上折环部方向凹陷形成的弧形结构。
- 根据权利要求10所述发声器件,其特征在于,所述盆架包括固定支撑所述磁路***的底壁、由所述底壁周缘弯折延伸的呈环状的侧壁以及由所述侧壁向靠近所述磁路***方向延伸的呈环状的支撑壁;所述下振膜的外周侧固定于所述侧壁并使所述下振膜与所述底壁间隔设置,所述上振膜的外周侧固定于所述侧壁远离所述底壁的一端,所述隔离振膜的外周侧固定于所述支撑壁。
- 根据权利要求14所述的发声器件,其特征在于,所述磁路***包括支撑于所述底壁的磁轭和分别固定于所述磁轭的主磁钢以及环绕所述主磁钢的副磁钢,所述副磁钢与所述主磁钢间隔形成所述磁间隙;所述副磁钢设有让位口,所述上骨架和所述下骨架均经所述让位口延伸至所述磁间隙内并与所述音圈连接;所述第一上固定部固定于所述副磁钢远离所述磁轭的一侧。
- 根据权利要求15所述发声器件,其特征在于,所述副磁钢包括间隔设置于所述主磁钢相对两侧的第一副磁钢和间隔设置于所述主磁钢另外相对两侧的第二副磁钢,相邻的所述第一副磁钢和所述第二副磁钢间隔形成所述让位口。
- 根据权利要求15所述的发声器件,其特征在于,所述磁路***还包括盖设于所述副磁钢的导磁板,所述导磁板将所述第一上固定部压设于所述副磁钢上。
- 根据权利要求17所述的发声器件,其特征在于,所述导磁板抵接于所述主磁钢。
- 根据权利要求15所述的发声器件,其特征在于,所述副磁钢远离所述磁轭的一端呈倒角结构,所述第一上折环部正对于该倒角结构的位置设置,且所述第一上折环部呈向远离所述磁路***方向凹陷形成的弧形结构。
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US20180332400A1 (en) * | 2017-05-11 | 2018-11-15 | Premium Loudspeakers (Hui Zhou) Co., Ltd. | Ultra-thin planar magnetic film full-frequency speaker |
CN109362002A (zh) * | 2018-09-30 | 2019-02-19 | 瑞声科技(新加坡)有限公司 | 发声器件 |
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CN109362002A (zh) * | 2018-09-30 | 2019-02-19 | 瑞声科技(新加坡)有限公司 | 发声器件 |
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