CN113271513B - Bone conduction sound generating device and wearable equipment - Google Patents
Bone conduction sound generating device and wearable equipment Download PDFInfo
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- CN113271513B CN113271513B CN202110507400.1A CN202110507400A CN113271513B CN 113271513 B CN113271513 B CN 113271513B CN 202110507400 A CN202110507400 A CN 202110507400A CN 113271513 B CN113271513 B CN 113271513B
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 42
- 238000004806 packaging method and process Methods 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 230000003068 static effect Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 8
- 230000004907 flux Effects 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 239000012634 fragment Substances 0.000 description 26
- 230000000694 effects Effects 0.000 description 18
- 230000008859 change Effects 0.000 description 17
- 238000002955 isolation Methods 0.000 description 10
- 230000005236 sound signal Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 210000003027 ear inner Anatomy 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 210000000860 cochlear nerve Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 210000004880 lymph fluid Anatomy 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 210000002985 organ of corti Anatomy 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 210000003625 skull Anatomy 0.000 description 1
- -1 thickness Substances 0.000 description 1
- 210000003454 tympanic membrane Anatomy 0.000 description 1
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1058—Manufacture or assembly
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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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating 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
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/13—Hearing devices using bone conduction transducers
Abstract
The invention discloses a bone conduction sound production device and wearable equipment, wherein the bone conduction sound production device comprises an external packaging structure, a hollow cavity is arranged in the external packaging structure, and the hollow cavity is internally provided with: the hollow elastic sheet comprises an inner elastic sheet, an outer elastic sheet sleeved outside the inner elastic sheet and a plurality of connecting elastic sheets connected between the inner elastic sheet and the outer elastic sheet, and the outer elastic sheet is embedded in the external packaging structure; the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and the hollowed-out elastic sheet, wherein the upper magnetic part and the lower magnetic part are opposite in parallel in the Z-axis direction and are arranged in an isolated manner; the inner elastic sheet is connected to the upper magnetic bowl of the exciter, and the hollow elastic sheet and the upper magnetic bowl are matched to adjust the effective vibration area of the hollow elastic sheet so as to adjust the resonance frequency point of the device. Install bone conduction sound generating mechanism's wearable equipment, but transmission low frequency signal and transmission amplitude are moderate, and balanced whole sound audio frequency section promotes user experience and product tone quality.
Description
Technical Field
The invention relates to the technical field of bone conduction sounding, in particular to a bone conduction sounding device and wearable equipment.
Background
Bone conduction is a sound conduction mode, that is, sound is converted into mechanical vibration with different frequencies, and sound waves are transmitted through the skull, the bone labyrinth, the lymph fluid of the inner ear, the spiral organ and the auditory center of a human body. Compared with the traditional sound conduction mode of generating sound waves through a sound film, the bone conduction mode omits a plurality of sound wave transmission steps, can realize clear sound restoration in a noisy environment, and does not influence other people due to the fact that the sound waves are diffused in the air.
The earphone manufactured by applying the bone conduction sounding technology is called as follows: bone conduction earphone, the conduction of its sound wave is different with ordinary pleasant formula, does not need the vibration of eardrum, but directly passes to auditory nerve through the bone, has both improved the travelling comfort, has protected user's hearing again, can also make the user directly hear external sound clearly, has its unique superiority, but current bone conduction earphone has following defect:
the bone conduction sound generating mechanism who uses in current bone conduction earphone can produce great vibration amplitude when the conduction low frequency signal, has stronger sense of shaking during the use, influences customer experience. Therefore, in order to overcome the above defects, in practical application, the ear phone directly shields the low frequency signal, so that although the vibration sense is reduced, the sound transmitted to the ear lacks a bass part, the sound quality is not high, and the experience sense of the customer is also influenced. Therefore, the research on the bone conduction sounding device which has rich low-frequency content and improves the low-frequency tone quality and sound effect is significant.
Disclosure of Invention
The invention aims to provide a bone conduction sounding device and wearable equipment, which can transmit low-frequency signals and moderate amplitude and balance the whole voice frequency section.
In order to solve the above technical problem, on one hand, the invention provides a bone conduction sound generating device, which includes an external packaging structure, wherein a hollow cavity is arranged in the external packaging structure, and the hollow cavity is internally provided with:
the hollow elastic sheet comprises an inner elastic sheet, an outer elastic sheet sleeved outside the inner elastic sheet and a plurality of connecting elastic sheets connected between the inner elastic sheet and the outer elastic sheet, and the outer elastic sheet is embedded on the external packaging structure;
the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and the hollowed-out elastic sheet, and the upper magnetic part and the lower magnetic part are arranged in parallel and opposite to each other in the Z-axis direction and are isolated from each other;
the inner elastic sheet is connected to the upper magnetic bowl of the exciter, and the hollow elastic sheet is matched with the upper magnetic bowl to adjust the effective vibration area of the hollow elastic sheet so as to adjust the resonance frequency point of the device.
Preferably, the inner elastic sheet and the outer elastic sheet are arranged at positions staggered with each other in the horizontal direction, and the inner elastic sheet and the connecting elastic sheet are matched to adjust the effective vibration area of the hollowed elastic sheet so as to adjust the resonance frequency point of the device.
Preferably, the connecting elastic sheet is arranged obliquely, the higher end of the connecting elastic sheet is connected to the outer elastic sheet, the lower end of the connecting elastic sheet is connected to the inner elastic sheet, the connecting elastic sheet adjusts the hollow elastic sheet to be stacked with the framework of the exciter in the Z-axis direction, and the gap between the upper magnetic piece and the lower magnetic piece is adjusted.
Preferably, the upper magnetic bowl contains the upper magnetic part, the upper magnetic bowl comprises a top wall, a boss protruding upwards is arranged on the top wall, the inner elastic sheet is connected to the boss, and the inner elastic sheet, the connecting elastic sheet and the boss are matched to adjust the effective vibration area of the hollowed elastic sheet so as to adjust the resonance frequency point of the device.
Preferably, the boss adjusts the frame stacking of the hollowed-out elastic sheet and the exciter in the Z-axis direction, and adjusts the gap between the upper magnetic part and the lower magnetic part.
Preferably, the bottom surface area of the upper magnetic bowl is smaller than that of the upper magnetic part, the exciter is connected to the inner elastic sheet through the upper magnetic bowl, and the inner elastic sheet, the connecting elastic sheet and the upper magnetic bowl are matched to adjust the effective vibration area of the hollowed elastic sheet so as to adjust the resonance frequency point of the device.
Preferably, the bottom surface of the upper magnetic bowl is smaller than or equal to the surface area of the inner elastic sheet, the upper magnetic bowl adjusts the hollow elastic sheet and the framework of the exciter in the Z-axis direction to be stacked, and the gap between the upper magnetic part and the lower magnetic part is adjusted.
Preferably, the exciter further comprises a lower magnetic bowl containing the lower magnetic part, the lower magnetic part is connected to the bottom of the hollow cavity through the lower magnetic bowl, the magnetic flux of the upper magnetic part is greater than or equal to that of the lower magnetic part, the upper magnetic part and the lower magnetic part are arranged in a homopolar and opposite manner, and when the exciter is not electrified, the repulsive force between the upper magnetic part and the lower magnetic part is equal to the attractive force between the upper magnetic part and the lower magnetic bowl so as to keep the static balance of magnetic force.
Preferably, the exciter further comprises a coil installed in the lower magnetic bowl and arranged around the lower magnetic part, and a flexible circuit board arranged between the coil and the lower magnetic bowl, wherein one end of the flexible circuit board is connected with the coil, and the other end of the flexible circuit board extends out of the external packaging structure.
Preferably, the upper magnetic member includes at least one magnet and/or the lower magnetic member includes at least one magnet.
Preferably, the gap is filled with one or more of air, damping material and elastic member.
Preferably, the external packaging structure comprises a shell provided with a hollow cavity and a cover plate covered on the shell, and the hollowed-out elastic sheet is embedded in the shell and arranged opposite to the cover plate.
On the other hand, the invention further provides wearable equipment comprising the bone conduction sounding device.
Compared with the prior art, the invention has the following advantages:
the bone conduction sound production device adopts the split type exciter, the inner elastic sheet of the hollow elastic sheet is connected to the upper magnetic bowl of the exciter, the effective vibration area of the hollow elastic sheet is adjusted through the matching of the hollow elastic sheet and the upper magnetic bowl so as to adjust the resonance frequency point of the device, so that the amplitude of a sound signal transmitted by the sound production device is moderate, meanwhile, a bass part can be synchronously transmitted into an auditory canal, the whole sound frequency section is balanced, a better acoustic effect is achieved, and the user experience and the product sound quality are obviously improved.
In a preferred scheme, an inner elastic sheet and an outer elastic sheet of the hollowed elastic sheet are arranged at mutually staggered positions in the horizontal direction, the effective vibration area of the hollowed elastic sheet is adjusted through the cooperation of the inner elastic sheet and the connecting elastic sheet so as to adjust the resonance frequency point of the device, meanwhile, the hollowed elastic sheet and a framework stack of the exciter in the Z-axis direction are adjusted through the connecting elastic sheet, and the gap between the upper magnetic part and the lower magnetic part is adjusted, so that the sound generating device transmits low-frequency signals and has moderate transmission amplitude, and the whole sound-sound frequency section is balanced;
in a preferred scheme, the boss arranged on the upper magnetic bowl is connected with the hollowed-out elastic sheet and the exciter, the effective vibration area of the hollowed-out elastic sheet is adjusted through the cooperation of the hollowed-out elastic sheet and the boss so as to adjust the resonance frequency point of the device, meanwhile, the hollowed-out elastic sheet and the framework of the exciter in the Z-axis direction are adjusted through the boss to be stacked, and the gap between the upper magnetic piece and the lower magnetic piece is adjusted, so that the sound generating device transmits low-frequency signals, the transmission amplitude is moderate, and the whole sound-sound frequency section is balanced;
in a preferred scheme, the hollowed-out elastic sheet and the exciter are connected through an upper magnetic bowl of which the bottom surface area is smaller than that of the upper magnetic part, the effective vibration area of the hollowed-out elastic sheet is adjusted through the cooperation of the hollowed-out elastic sheet and the upper magnetic bowl so as to adjust the resonance frequency point of the device, meanwhile, the hollowed-out elastic sheet and the framework of the exciter are adjusted through the upper magnetic bowl in the Z-axis direction to be stacked, and the gap between the upper magnetic part and the lower magnetic part is adjusted, so that the sound generating device transmits a low-frequency signal and has moderate transmission amplitude, and the whole sound-frequency band is balanced;
in a preferred scheme, the exciter completely utilizes the magnetic force balance to achieve the static balance among all parts through the upper magnetic part and the lower magnetic part which are oppositely arranged in the same pole, an additional supporting structure is not needed, the structure is simple, the realization is easy, and the production cost is reduced;
in an optimal scheme, the apron is established through the lid to outside packaging structure, has strengthened the intensity of whole device, has better syllable-dividing effect simultaneously, has effectively prevented the emergence of sound leakage phenomenon.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may effect this invention by selecting various possible shapes and proportional dimensions as appropriate. In the drawings:
fig. 1 is an exploded view of a bone conduction sound emitting device according to a first embodiment of the present invention;
fig. 2 is a cross-sectional view of a bone conduction sound generator according to a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a hollow-out elastic sheet according to an embodiment of the present invention;
fig. 4 is an exploded view of a bone conduction sound generator according to a second embodiment of the present invention;
fig. 5 is a cross-sectional view of a bone conduction sound generator according to a second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an upper magnetic bowl in the second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a hollowed-out elastic sheet in the second and third embodiments of the present invention;
fig. 8 is an exploded view of a bone conduction sound generator according to a third embodiment of the present invention;
fig. 9 is a sectional view of a bone conduction sound emitting apparatus according to a third embodiment of the present invention.
Shown in the figure:
11. a hollow cavity; 12. a housing; 121. mounting grooves; 13. a cover plate; 2. hollowing out the elastic sheet; 21. an inner spring plate; 22. an outer spring plate; 23. connecting the elastic sheets; 31. an upper magnetic member; 32. a lower magnetic member; 33. an upper magnetic bowl; 331. a top wall; 332. a boss; 34. a lower magnetic bowl; 35. an isolation region; 36. a coil; 37. a flexible circuit board.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 9, a bone conduction sound generating device according to the present invention includes an external packaging structure, a hollow cavity 11 is disposed in the external packaging structure, and a hollow elastic sheet 2 and an actuator are disposed in the hollow cavity 11. The hollow elastic sheet comprises an inner elastic sheet 21, an outer elastic sheet 22 sleeved outside the inner elastic sheet 21 and a plurality of connecting elastic sheets 23 connected between the inner elastic sheet 21 and the outer elastic sheet 22; the exciter comprises an upper magnetic part 31, a lower magnetic part 32 and an upper magnetic bowl 33 connected between the upper magnetic part 31 and the hollowed-out elastic sheet 2, wherein the upper magnetic part 31 and the lower magnetic part 32 are oppositely arranged in parallel in the Z-axis direction and are arranged in a mutually isolated mode to form an isolation area 35. The outer elastic sheet 22 is embedded in the external packaging structure, the inner elastic sheet 21 is connected to the upper magnetic bowl 33 of the exciter, and the hollow elastic sheet 2 and the upper magnetic bowl 33 are matched to adjust the effective vibration area of the hollow elastic sheet so as to adjust the resonance frequency point of the device.
Further, the hollow elastic piece 2 is not integrally attached to the upper magnetic bowl 33, the stack of the hollow elastic piece 2 and the framework of the exciter in the Z-axis direction can be freely adjusted by changing the shape of the hollow elastic piece 2 or the upper magnetic bowl 33, and the gap between the upper magnetic piece 31 and the isolation region 35 between the lower magnetic piece 32 can also be adjusted by the hollow elastic piece 2 or the upper magnetic bowl 33. The inner spring plate 21 and the upper magnetic bowl 33 are matched to adjust the effective vibration area of the hollowed spring plate so as to adjust the resonance frequency point of the device. Specifically, under the unchangeable condition of the whole size of fretwork shell fragment 2, thickness, material, the length and width and the area of shell fragment 21 in changing, and then the length and the area of the connection shell fragment 23 between shell fragment 21 and the outer shell fragment 22 in changing, the length and the area of connecting shell fragment 23 are the effective vibration area of this fretwork spring promptly to change the resonant frequency point F0 of system, nimble adjustment low frequency effect, the resonant frequency point can reach 80Hz least. Meanwhile, the upper magnetic bowl 33 part connected with the inner elastic sheet 21 can also change along with the change of the length, the width and the area of the inner elastic sheet 21, and the change of F0 can cause amplitude change, so the whole height of the hollow elastic sheet 2 connected with the upper magnetic bowl 33 also needs to be correspondingly adjusted, the Z direction of the hollow elastic sheet 2 and the upper magnetic bowl 33 are completely connected and stacked, and the gap of the isolation area 35 between the upper magnetic piece 31 and the lower magnetic piece 32 is adjusted, so that the amplitude of a sound signal transmitted by the sound generating device is moderate, meanwhile, a bass part can be synchronously transmitted to an auditory canal, the whole sound frequency section is balanced, a better acoustic effect is achieved, and the user experience and the product sound quality are remarkably improved.
The exciter further includes a lower magnetic bowl 34 accommodating the lower magnetic member 32, a coil 36 mounted within the lower magnetic bowl 34 and disposed around the lower magnetic member 32, and a flexible circuit board 37 disposed between the coil 36 and the lower magnetic bowl 34. The upper magnetic member 31 is connected to the inner resilient sheet 21 through an upper magnetic bowl 33, and the lower magnetic member 32 is connected to the bottom of the hollow cavity 11 through a lower magnetic bowl 34. Specifically, the upper magnetic part 31 is installed in the upper magnetic bowl 33 or directly adhered to the upper magnetic bowl 33, and after the coil 36 is electrified, different magnetic fields are generated to be matched with the upper magnetic part 31 to provide driving force for the vibration of the hollow elastic piece 2. Preferably, the upper magnetic member 31 includes at least one magnet, which may be a single magnet or a plurality of magnets stacked and spliced together. Lower magnetic part 32 is installed in lower magnetic bowl 34, goes up magnetic part 31 and the repulsion between the magnetic part 32 down and has offset the attraction between magnetic part 31 and the lower magnetic bowl 34, makes the exciter be in magnetic force static balance when not circular telegram, avoids fretwork shell fragment 2 to produce the internal stress, utilizes magnetic force balance to reach the static balance between each part completely, need not extra bearing structure, simple structure easily realizes reduction in production cost. Preferably, the lower magnetic member 32 includes at least one magnet, which may be a single magnet or a plurality of magnets stacked and spliced together. The coil 36 is mounted within the lower magnetic bowl 34 and disposed around the lower magnetic member 32. Preferably, the hollow area of the coil 36 is smaller than or equal to the area of the upper magnetic part 31 corresponding to the coil 36, the area of the lower magnetic part 32 is smaller than the area of the hollow part of the coil 36, the surface area of the bottom of the lower magnetic bowl 34 is larger than or equal to the surface area of the bottom of the lower magnetic bowl 34, and the magnetic flux of the lower magnetic part 32 is smaller than or equal to the magnetic flux of the upper magnetic part 31, where the magnetic flux can be changed by changing the volume or material of the magnetic part. The flexible circuit board 37 is disposed between the coil 36 and the lower magnetic bowl 34, and one end of the flexible circuit board is connected to the coil 36, and the other end of the flexible circuit board extends to the outside through the lower magnetic bowl 34 and the housing 12 in turn to be connected to the terminal device. The upper magnetic part 31 and the lower magnetic part 32 are oppositely arranged in the same pole, and when the power is not on, the repulsion force between the upper magnetic part 31 and the lower magnetic part 32 is equal to the attraction force between the upper magnetic part 31 and the lower magnetic bowl 34 so as to achieve the static balance of magnetic force, avoid the hollow elastic sheet 2 from generating internal stress, and achieve the optimal fidelity effect. When the coil 36 is electrified, the static balance of the magnetic force is broken, and the upper magnetic bowl 33 arranged on the hollow elastic sheet 2 moves up and down to drive the hollow elastic sheet 2 to vibrate up and down. It should be noted that the isolation area 35 between the upper magnetic part 31 and the lower magnetic part 32 is always present regardless of the up and down movement of the upper magnetic bowl 33, that is, when the amplitude of the downward vibration of the upper magnetic bowl 33 is maximum, the upper magnetic part 31 will not touch the lower magnetic part 32 and the coil 36 to hinder the movement.
Preferably, the isolation area 35 is filled with one or more of air, damping material, and other elastic members, such as magnetic liquid, foam, spring, etc.
The external packaging structure comprises a shell 12 provided with a hollow cavity 11 and a cover plate 13 arranged on the shell 12 in a covering mode, and the hollow elastic sheet 2 is embedded in the shell 12 and arranged opposite to the cover plate 13. For further better fixed fretwork shell fragment 2, shell 12 is provided with mounting groove 121 at the open end of cavity 11, and outer shell fragment 22 is installed in mounting groove 121, goes up magnetic bowl 33 and connects on interior shell fragment 21, and connects shell fragment 23 and last magnetic bowl 33 phase separation all the time, guarantees that fretwork shell fragment 2 can produce the vibration.
In order to further ensure the strength of the whole sound generating device and the sound insulation effect, the cover plate 13 is covered on the mounting groove 121, and the cover plate 13 is matched with the mounting groove 121 and seals the hollow cavity 11. The cover plate 13 is preferably made of metal materials, the rigidity is good, deformation is avoided, the distance between the cover plate 13 and the hollowed-out elastic piece 2 is larger than the maximum working vibration displacement of the hollowed-out elastic piece 2, and vibration can be guaranteed to be normally carried out. The cover plate 13 is arranged on the external packaging structure through the cover, so that the strength of the whole device is enhanced, a better sound insulation effect is achieved, and the sound leakage phenomenon is effectively prevented.
The invention also provides wearable equipment which is provided with the bone conduction sound production device, can be earphones, wearable glasses, AR, MR and the like, can transmit low-frequency signals, has moderate transmission amplitude and balances the whole voice frequency section.
The first embodiment is as follows:
as shown in fig. 1 to 3, in order to attach the hollow elastic piece 2 to the upper magnetic bowl 33, in this embodiment, the inner elastic piece 21 and the outer elastic piece 22 of the hollow elastic piece 2 are disposed at positions staggered from each other in the horizontal direction, the outer elastic piece 22 is embedded in the external packaging structure, the inner elastic piece 21 is connected to the upper magnetic bowl 33 of the exciter, and the inner elastic piece 21 and the connecting elastic piece 23 cooperate to adjust the effective vibration area of the hollow elastic piece to adjust the resonance frequency point of the device.
Specifically, in this embodiment, the connection elastic sheet 23 is obliquely disposed to achieve the purpose that the inner elastic sheet 21 and the outer elastic sheet 22 are disposed at the mutually staggered positions in the horizontal direction, the higher end of the connection elastic sheet 23 is connected to the outer elastic sheet 22, the lower end of the connection elastic sheet 23 is connected to the inner elastic sheet 21, the hollow elastic sheet 2 is not integrally attached to the upper magnetic bowl 33, the hollow elastic sheet 2 can be freely adjusted to be stacked with the framework of the exciter in the Z-axis direction, and the gap between the upper magnetic member 31 and the lower magnetic member 32 in the isolation region 35 can be adjusted. Meanwhile, under the condition that the overall size, thickness and material of the hollowed-out elastic piece 2 are not changed, the length, width and area of the inner elastic piece 21 are changed, the length and area of the connecting elastic piece 23 are the effective vibration area of the hollowed-out spring, and therefore the resonance frequency point F0 of the system is changed, the low-frequency effect is adjusted flexibly, and the resonance frequency point can reach 80Hz at the lowest. Meanwhile, the hollowed-out elastic piece 2 and the framework of the exciter in the Z-axis direction are adjusted to be stacked through the connecting elastic piece 23, and the gap of the isolation area 35 between the upper magnetic piece and the lower magnetic piece is adjusted, so that the amplitude of a sound signal transmitted by the sound generating device is moderate, meanwhile, a bass part can be synchronously transmitted to an auditory canal, the whole sound frequency section is balanced, a good acoustic effect is achieved, and user experience and product sound quality are remarkably improved.
In this embodiment, the upper magnetic member 31 is installed in the upper magnetic bowl 33, after the coil 36 is powered on, different magnetic fields are generated to cooperate with the upper magnetic member 31 to provide driving force for the vibration of the hollowed-out elastic sheet 2, and the upper magnetic member 31 and the upper magnetic bowl 33 are in zero-clearance fit or only have an assembly space. Lower magnetic part 32 is installed under in magnetic bowl 34, go up magnetic part 31 and the repulsion between the magnetic part 32 down and offset the magnetic part 31 and down the attraction between the magnetic bowl 34, make the exciter be in magnetic force static balance when not circular telegram, avoid fretwork shell fragment 2 to produce the internal stress, the exciter is through two homopolar mutual dispositions last magnetic part 31 and magnetic part 32 down, utilize magnetic force balance to reach the static balance between each part completely, need not extra bearing structure, moreover, the steam generator is simple in structure, easy realization, and the production cost is reduced.
The upper magnetic part 31 and the lower magnetic part 32 are oppositely arranged in the same pole, and when the power is not on, the repulsion force between the upper magnetic part 31 and the lower magnetic part 32 is equal to the attraction force between the upper magnetic part 31 and the lower magnetic bowl 34 so as to achieve the static balance of magnetic force, avoid the hollow elastic sheet 2 from generating internal stress, and achieve the optimal fidelity effect. When the coil 36 is electrified, the static balance of the magnetic force is broken, and the upper magnetic bowl 33 arranged on the hollow elastic sheet 2 moves up and down to drive the hollow elastic sheet 2 to vibrate up and down.
Example two
As shown in fig. 4 to 7, in order to attach the hollow elastic piece 2 onto the upper magnetic bowl 33 in an incomplete manner, in the present embodiment, a protruding boss 332 protruding upward is disposed on the top wall 331 of the upper magnetic bowl 33, the outer elastic piece 22 is embedded on the external packaging structure, the inner elastic piece 21 is connected to the boss 332, and the inner elastic piece 21, the connecting elastic piece 23 and the boss 332 cooperate to adjust the effective vibration area of the hollow elastic piece to adjust the resonance frequency point of the device;
specifically, the boss 332 is disposed on the upper magnetic bowl 33 to connect the hollow elastic piece 2 and the exciter, so that the hollow elastic piece 2 is not integrally attached to the upper magnetic bowl 33, the frame of the hollow elastic piece 2 and the exciter in the Z-axis direction can be freely adjusted to stack, and the gap between the upper magnetic element 31 and the lower magnetic element 32 in the isolation region 35 can be adjusted. Preferably, the surface area of the boss 332 is smaller than or equal to the surface area of the inner spring plate 21. Under the condition that the whole size, thickness, the material of fretwork shell fragment 2 are unchangeable, the length and width and the area of shell fragment 21 in changing, and then change the length and the area of connecting shell fragment 23, the length and the area of connecting shell fragment 23 are the effective vibration area of this fretwork spring promptly to change the resonant frequency point F0 of system, nimble adjustment low frequency effect, resonant frequency point can reach 80Hz least. Meanwhile, the boss 332 can also change along with the change of the length, the width and the area of the inner elastic sheet 21, and the change of the F0 can cause the amplitude change, so the height of the boss 332 also needs to be correspondingly adjusted, the Z direction for completely connecting the hollowed-out elastic sheet 2 and the upper magnetic bowl 33 is stacked, and the gap of the isolation area 35 between the upper magnetic piece 31 and the lower magnetic piece 32 is adjusted, so that the amplitude of a sound signal transmitted by a sound generating device is moderate, meanwhile, a bass part can be synchronously transmitted to the auditory canal, the whole sound frequency section is balanced, a better acoustic effect is achieved, and the user experience and the product sound quality are remarkably improved.
In this embodiment, the upper magnetic member 31 is installed in the upper magnetic bowl 33, after the coil 36 is powered on, different magnetic fields are generated to cooperate with the upper magnetic member 31 to provide driving force for the vibration of the hollowed-out elastic sheet 2, and the upper magnetic member 31 and the upper magnetic bowl 33 are in zero-clearance fit or only have an assembly space. Lower magnetic part 32 is installed under in magnetic bowl 34, go up magnetic part 31 and the repulsion between the magnetic part 32 down and offset the magnetic part 31 and down the attraction between the magnetic bowl 34, make the exciter be in magnetic force static balance when not circular telegram, avoid fretwork shell fragment 2 to produce the internal stress, the exciter is through two homopolar mutual dispositions last magnetic part 31 and magnetic part 32 down, utilize magnetic force balance to reach the static balance between each part completely, need not extra bearing structure, moreover, the steam generator is simple in structure, easy realization, and the production cost is reduced.
The upper magnetic part 31 and the lower magnetic part 32 are oppositely arranged in the same pole, and when the power is not on, the repulsion force between the upper magnetic part 31 and the lower magnetic part 32 is equal to the attraction force between the upper magnetic part 31 and the lower magnetic bowl 34 so as to achieve the static balance of magnetic force, avoid the hollow elastic sheet 2 from generating internal stress, and achieve the optimal fidelity effect. When the coil 36 is electrified, the static balance of the magnetic force is broken, and the upper magnetic bowl 33 arranged on the hollow elastic sheet 2 moves up and down to drive the hollow elastic sheet 2 to vibrate up and down.
Example three:
as shown in fig. 7 to 9, in order to attach the hollow elastic piece 2 onto the upper magnetic bowl 33 in an incomplete manner, in this embodiment, the upper magnetic bowl 33 is preferably designed such that the bottom surface area of the upper magnetic bowl 33 is smaller than the bottom surface area of the upper magnetic member 31, the exciter is directly connected to the inner elastic piece 21 of the hollow elastic piece 2 through the upper magnetic bowl 33, and the inner elastic piece 21, the connecting elastic piece 23 and the upper magnetic bowl 33 are matched to adjust the effective vibration area of the hollow elastic piece 2 so as to adjust the resonance frequency point of the device.
Specifically, the bottom surface of the upper magnetic bowl 33 is smaller than or equal to the surface area of the inner elastic sheet 21, the upper magnetic bowl 33 adjusts the stacking of the hollowed elastic sheet and the framework of the exciter in the Z-axis direction, and adjusts the gap between the upper magnetic member 31 and the lower magnetic member 32. Under the unchangeable condition of 2 whole sizes of fretwork shell fragment, thickness, material, the length and width and the area of shell fragment 21 in the change, and then change the length and the area of connecting shell fragment 23, the length and the area of connecting shell fragment 23 are the effective vibration area of this fretwork spring promptly to change the resonant frequency point F0 of system, nimble adjustment low frequency effect, the resonant frequency point can reach 80Hz at minimum. Simultaneously, it also can change along with the change of interior shell fragment 21 length and width and area to go up magnetic bowl 33, because F0 changes can lead to the amplitude change, so should go up magnetic bowl 33's height also need do corresponding adjustment, the Z direction of connecting fretwork shell fragment 2 and last magnetic part 31 completely piles up, adjust the clearance between the upper and lower magnetic part simultaneously, the sound signal amplitude that makes sound generating mechanism transmit is moderate, simultaneously the bass part can be transmitted in the duct in step, balanced whole sound audio frequency section, reach better acoustic effect, user experience and product tone quality are promoted remarkably.
In this embodiment, go up magnetic bowl 33 and can't hold last magnetic part, go up magnetic part 31 and paste directly and connect on last magnetic bowl 33, coil 36 produces different magnetic fields after the circular telegram and goes up magnetic part 31 cooperation and provide drive power for the vibration of fretwork shell fragment 2, go up no clearance fit between magnetic part 31 and the last magnetic bowl 33, compare with traditional exciter, need not to reserve the insertion space of voice coil loudspeaker voice coil, reduce whole sound generating mechanism's volume. Lower magnetic part 32 is installed in lower magnetic bowl 34, goes up magnetic part 31 and the repulsion between the magnetic part 32 down and has offset the attraction between magnetic part 31 and the lower magnetic bowl 34, makes the exciter be in magnetic force static balance when not circular telegram, avoids fretwork shell fragment 2 to produce the internal stress, utilizes magnetic force balance to reach the static balance between each part completely, need not extra bearing structure, simple structure easily realizes reduction in production cost.
The upper magnetic part 31 and the lower magnetic part 32 are oppositely arranged in the same pole, and when the power is not on, the repulsion force between the upper magnetic part 31 and the lower magnetic part 32 is equal to the attraction force between the upper magnetic part 31 and the lower magnetic bowl 34 so as to achieve the static balance of magnetic force, avoid the hollow elastic sheet 2 from generating internal stress, and achieve the optimal fidelity effect. When the coil 36 is electrified, the static balance of the magnetic force is broken, and the upper magnetic bowl 33 arranged on the hollow elastic sheet 2 moves up and down to drive the hollow elastic sheet 2 to vibrate up and down.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the claims of any aspect of subject matter that is disclosed herein is not intended to forego the subject matter and should not be construed as an admission that the applicant does not consider such subject matter to be part of the disclosed subject matter.
Claims (13)
1. The utility model provides a bone conduction sound generating mechanism, includes outside packaging structure, be provided with the cavity in the outside packaging structure, its characterized in that, be provided with in the cavity:
the hollow elastic piece comprises an inner elastic piece, an outer elastic piece sleeved outside the inner elastic piece and a plurality of connecting elastic pieces connected between the inner elastic piece and the outer elastic piece, and the outer elastic piece is embedded on the external packaging structure;
the exciter comprises an upper magnetic part, a lower magnetic part and an upper magnetic bowl connected between the upper magnetic part and the hollowed-out elastic sheet, wherein the upper magnetic part and the lower magnetic part are opposite in parallel in the Z-axis direction and are arranged in an isolated manner;
the inner elastic sheet is connected to the upper magnetic bowl of the exciter, the hollowed elastic sheet is matched with the upper magnetic bowl, and the effective vibration area of the hollowed elastic sheet is adjusted by adjusting the length, the width and the area of the inner elastic sheet and the connecting elastic sheet so as to adjust the resonance frequency point of the device.
2. The bone conduction sound-producing device according to claim 1, wherein the inner spring and the outer spring are disposed at positions staggered from each other in the horizontal direction, and the inner spring and the connecting spring cooperate to adjust the effective vibration area of the hollowed spring so as to adjust the resonance frequency point of the device.
3. The bone conduction sound-producing device according to claim 2, wherein the connecting elastic piece is obliquely arranged, the high end of the connecting elastic piece is connected to the outer elastic piece, the low end of the connecting elastic piece is connected to the inner elastic piece, the connecting elastic piece adjusts the hollow elastic piece and the framework of the exciter in the Z-axis direction to be stacked, and adjusts the gap between the upper magnetic piece and the lower magnetic piece.
4. The bone conduction sound production device according to claim 1, wherein the upper magnetic bowl accommodates the upper magnetic member, the upper magnetic bowl comprises a top wall, the top wall is provided with a boss protruding upwards, the inner elastic sheet is connected to the boss, and the inner elastic sheet, the connecting elastic sheet and the boss are matched to adjust the effective vibration area of the hollowed elastic sheet so as to adjust the resonance frequency point of the device.
5. The bone conduction sound emitting device according to claim 4, wherein the boss adjusts the stacking of the hollowed-out spring piece and the frame of the actuator in the Z-axis direction, and adjusts the gap between the upper magnetic element and the lower magnetic element.
6. The bone conduction sound production device according to claim 1, wherein the bottom surface area of the upper magnetic bowl is smaller than the bottom surface area of the upper magnetic member, the exciter is connected to the inner elastic sheet through the upper magnetic bowl, and the inner elastic sheet, the connecting elastic sheet and the upper magnetic bowl are matched to adjust the effective vibration area of the hollowed elastic sheet so as to adjust the resonance frequency point of the device.
7. The bone conduction sound-producing device according to claim 6, wherein a bottom surface of the upper magnetic bowl is smaller than or equal to a surface area of the inner elastic piece, the upper magnetic bowl adjusts the stacking of the hollowed elastic piece and the framework of the exciter in the Z-axis direction, and adjusts a gap between the upper magnetic piece and the lower magnetic piece.
8. The bone conduction sound production device according to claim 3, 5 or 7, wherein the actuator further comprises a lower magnetic bowl for accommodating the lower magnetic member, the lower magnetic member is connected to the bottom of the hollow cavity through the lower magnetic bowl, the magnetic flux of the upper magnetic member is greater than or equal to that of the lower magnetic member, the upper magnetic member and the lower magnetic member are arranged in a homopolar and opposite manner, and when the actuator is not energized, the repulsive force between the upper magnetic member and the lower magnetic member is equal to the attractive force between the upper magnetic member and the lower magnetic bowl so as to keep the magnetic static balance.
9. The bone conduction sound generator of claim 8, wherein the actuator further comprises a coil mounted in the lower magnetic bowl and disposed around the lower magnetic member, and a flexible circuit board disposed between the coil and the lower magnetic bowl, one end of the flexible circuit board being connected to the coil, and the other end of the flexible circuit board extending outside the external packaging structure.
10. The bone conduction sound generator of claim 3, 5 or 7, wherein the upper magnetic member comprises at least one magnet and/or the lower magnetic member comprises at least one magnet.
11. The bone conduction sound emitting device of claim 3, 5 or 7, wherein the gap is filled with one or more of air, a damping material, an elastic member.
12. The bone conduction sound production device according to claim 3, 5 or 7, wherein the external packaging structure comprises a housing configured with a hollow cavity and a cover plate covering the housing, and the hollow elastic sheet is embedded in the housing and arranged opposite to the cover plate.
13. A wearable device comprising the bone conduction sound emitting apparatus of any one of claims 1 to 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507400.1A CN113271513B (en) | 2021-05-10 | 2021-05-10 | Bone conduction sound generating device and wearable equipment |
| PCT/CN2021/093370 WO2022236739A1 (en) | 2021-05-10 | 2021-05-12 | Bone conduction sound generating apparatus and wearable device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110507400.1A CN113271513B (en) | 2021-05-10 | 2021-05-10 | Bone conduction sound generating device and wearable equipment |
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| Publication Number | Publication Date |
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| CN113271513A CN113271513A (en) | 2021-08-17 |
| CN113271513B true CN113271513B (en) | 2023-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110507400.1A Active CN113271513B (en) | 2021-05-10 | 2021-05-10 | Bone conduction sound generating device and wearable equipment |
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| CN (1) | CN113271513B (en) |
| WO (1) | WO2022236739A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036303A1 (en) * | 2021-09-10 | 2023-03-16 | 苏州索迩电子技术有限公司 | Vibration device, bone conduction earphone, wearable apparatus, and intelligent hardware apparatus |
| CN113965846A (en) * | 2021-09-18 | 2022-01-21 | 苏州索迩电子技术有限公司 | Bone conduction sounding device, bone conduction sounding device assembling method and bone conduction earphone |
| CN113949957B (en) * | 2021-09-18 | 2024-01-16 | 苏州索迩电子技术有限公司 | Bone conduction earphone and bone conduction earphone assembling method |
| WO2023039907A1 (en) * | 2021-09-18 | 2023-03-23 | 苏州索迩电子技术有限公司 | Bone conduction earphone and method for assembling bone conduction earphone |
| CN115209295A (en) * | 2022-05-19 | 2022-10-18 | 苏州索迩电子技术有限公司 | Osteoacusis vibration sound generating mechanism, osteoacusis glasses and wearable equipment |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113271513A (en) | 2021-08-17 |
| WO2022236739A1 (en) | 2022-11-17 |
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