CN204425584U - Bone conduction earphone loud speaker - Google Patents
Bone conduction earphone loud speaker Download PDFInfo
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- CN204425584U CN204425584U CN201520087858.6U CN201520087858U CN204425584U CN 204425584 U CN204425584 U CN 204425584U CN 201520087858 U CN201520087858 U CN 201520087858U CN 204425584 U CN204425584 U CN 204425584U
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- loud speaker
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- bone conduction
- yoke
- conduction earphone
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Abstract
The utility model relates to ear phone technology field, refers in particular to a kind of bone conduction earphone loud speaker; The utility model comprises upper casing, lower casing, oscillating plate, yoke, magnet, voice coil loudspeaker voice coil, cushion block, support, keyset, lower casing is arranged with damping fin, damping fin comprises outer platform, central platform, is connected between outer platform with central platform by pole, and central platform contacts with yoke; The utility model is provided with damping fin and whole vibrational system is supported, this damping fin has elasticity, can suppress to do unnecessary transverse movement, suppresses the excessive vibration in axis simultaneously, the stable of loud speaker is significantly improved, and the service quality of product improves greatly.
Description
Technical field
The utility model relates to ear phone technology field, refers in particular to a kind of bone conduction earphone loud speaker.
Background technology
Existing bone conduction earphone, its operation principle is different with traditional earphone, is to be vibrated by bone to realize sound conduction.Usual people's ear the vibration of air is reached ear-drum by external auditory meatus to touch auricularis and perceives sound, and existing bone conduction technology is directly conducted to auricularis and perceives sound by human skull.The Applicative time of bone conduction technology is not long, and it is urgently to be resolved hurrily that product still exists many technical problems.
In existing miniature bone-conduction speaker (loud speaker), except piezoelectric ceramic vibrator, nearly all be made up of magnet, coil, oscillating plate and biography vibrating device, the long-pending layer structure that vibrational system is also nearly all made up of balance plate, during bone-conduction speaker work, along with the vibration of oscillating plate, by vibration being transmitted with the contact of skin bone.
Existing bone-conduction speaker has suspension type structure and sling formula structure.The vibrational structure part of these two kinds of structures is all the state being in flying shore, when vibrational system axially moves, the quality with vibration being due to the Q value (defining the Q value Qts=Qms*Qes/ (Qms+Qes) of loud speaker according to T-S parameter) of vibration system has relation, because the assembling of voice coil loudspeaker voice coil and magnetic system exists error, under resonance dynamic frequency, it is very large that suspension type structural vibration system transient acceleration can become, vibration system can not axially move stably, cause vibration frequency unstable, thus there is abnormal sound, affect tonequality.When doing dropping shock experiment, because vibrational structure part adopts thin elastic material to support, when being subject to impacting, very easily there is deformation, thus affecting the reliability of loud speaker.When electric current flows through coil, according to the formula F=B*I*L of the Ampere force suffered in magnetic field of electrified wire, electric current is larger, Ampere force F is larger, and that is when the audio signal by one section of big current, vibration sense can be very strong, the skin bone of Long contact time people, people can not feel well.
Application number is " 201310005740.X ", name is called in the patent documentation of " a kind of bone-conduction headset device of single magnet and processing method thereof ", disclose a kind of bone-conduction headset device of single magnet, its device comprises the vibrational system be made up of vibration-transmitting plate and oscillating plate; Described oscillating plate is fixedly installed a voice coil loudspeaker voice coil; Wherein, be also provided with an outer magnetic conductive board, described outer magnetic conductive board be provided with a magnet, be provided with magnetic conductive board on the magnet, between described interior magnetic conductive board and described outer magnetic conductive board, form gap; Described voice coil loudspeaker voice coil is arranged in described gap.The stability of the vibrational system of this bone-conduction speaker is not high, and when running into foreign impacts, hull vibration affects the quality of loud speaker.
Therefore, based on the defect of above-mentioned existing bone conduction earphone loud speaker, need to improve existing bone conduction earphone loud speaker.
Utility model content
The purpose of this utility model is to provide a kind of bone conduction earphone loud speaker for the deficiencies in the prior art, and this bone conduction earphone loud speaker solves existing for existing loud speaker: the defects such as stability is not high, quality is not good.
For achieving the above object, the utility model is achieved through the following technical solutions:
Bone conduction earphone loud speaker, comprise upper casing, lower casing, oscillating plate, yoke, magnet, voice coil loudspeaker voice coil, cushion block, support, keyset, lower casing is arranged with damping fin, damping fin comprises outer platform, central platform, be connected by pole between outer platform with central platform, central platform contacts with yoke.
Concrete, yoke has male part, and ringwise, central platform is placed in the male part of yoke the central platform of damping fin.
Be surrounded by damping body outside oscillating plate, lower casing has jacking block, and jacking block compresses damping body.
In addition, be equipped with shell fragment between support and oscillating plate, voice coil loudspeaker voice coil is connected with shell fragment by support.
Carriage center is provided with the indent platform of switching voice coil loudspeaker voice coil, and keyset is positioned at indent platform.
Further, magnet is installed in yoke, and the upper end of magnet is provided with interior magnetic conductive board; The upper end of yoke has extension platform, extension platform is provided with extension magnet, and extension magnet is relative with interior magnetic conductive board, and cushion block compresses extension magnet.
Further, shell fragment has inner ring and outer ring, and inner ring is placed on support, outer ring is placed on cushion block, is connected between outer ring with inner ring by pole.
Pole is serpentine, " Z " shape, fan-shaped, whirlpool or vertical bar shaped.
Loud speaker also comprises briquetting, and the central platform of damping fin and yoke compress by briquetting.
Oscillating plate has multiple projection.
The beneficial effects of the utility model are: be provided with damping fin in loud speaker and whole vibrational system is supported, this damping fin has elasticity, can suppress to do unnecessary transverse movement, suppress the excessive vibration in axis simultaneously, the stable of loud speaker is significantly improved, and the service quality of product improves greatly.
Accompanying drawing explanation
Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present utility model.
Fig. 2 is assembly structure schematic diagram of the present utility model.
Fig. 3 is the enlarged diagram of damping fin of the present utility model.
Fig. 4 is frequency response curve schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
See Fig. 1---Fig. 3, the utility model bone conduction earphone loud speaker comprises: upper casing 1, lower casing 3, oscillating plate 4, yoke 7, magnet 8, voice coil loudspeaker voice coil 9, cushion block 10, support 11, keyset 15, lower casing 3 is arranged with damping fin 2, lower casing 3 forms reference column, damping fin 2 has the location hole coordinated with reference column; Damping fin 2 comprises outer platform 16, central platform 17, outer platform 16, central platform 17 are all in annular, be connected by pole 18 between outer platform 16 with central platform 17, central platform 17 contacts with yoke 7, pole 18 in serpentine, " Z " shape, fan-shaped, whirlpool or vertical bar shaped.
By pole 18 by central platform 17 sling in the planar central of damping fin 2, because central platform 2 is the level of state, be connected by pole 18 with outer platform 16, when central platform 17 is by horizontal applied force, because the interaction force of power can be transmitted to outer platform 16, as long as fix outer platform 16, damping fin 2 horizontal movement can be contained, thus keep stable, reliability when running into foreign impacts can be improved in the stability of vibrational system and routine use process, effectively weaken hull vibration according to assembly structure simultaneously.
The bottom of yoke 7 has male part, and central platform 17 is placed in the male part of yoke 7, and the central platform 17 of damping fin 2 is annular, convenient and yoke 7 centralized positioning.Damping fin 2 is inserted in the male part on yoke 7 fixing, and fixed form is not limited to glue, injection moulding, laser welding etc., only need reach processing request.Can also arrange briquetting 6, the central platform 22 of damping fin 2 compresses with yoke 7 by briquetting 6, makes damping fin 2 be adjacent to yoke 7.
Magnet 8 is installed in yoke 7, and the upper end of magnet 8 is provided with interior magnetic conductive board 13; The upper end of yoke 7 has extension platform, extension platform is provided with extension magnet 14, and extension magnet 14 is relative with interior magnetic conductive board 13, and cushion block 10 compresses extension magnet 14.
Be surrounded by damping body 5 outside oscillating plate 4, lower casing 3 has jacking block, and jacking block compresses damping body 5; Oscillating plate 4 and damping body 5 combine to wrap embedding form, fixed, can weaken the vibration conducting to upper casing by the jacking block of lower casing 2.The surface of oscillating plate 4 has multiple projection, and oscillating plate 4 coordinates with concave surface inside damping body 5, and the one side vibration sense that damping body 5 can be made to contact with human body skin limb strengthens, and the thickness of damping body 5 can be determined according to the requirement of the characteristic of damping material and loud speaker entirety.
Be equipped with shell fragment 12 between support 11 and oscillating plate 4, voice coil loudspeaker voice coil 9 is connected with shell fragment 12 by support 11.The shape of shell fragment 12 is similar to the shape of damping fin 2, shell fragment 2 has inner ring and outer ring, inner ring is placed on support 11, outer ring is placed on cushion block 10, is connected between outer ring with inner ring by pole, and pole is serpentine, " Z " shape, fan-shaped, whirlpool or vertical bar shaped.
Support 11 center is provided with the indent platform 19 of switching voice coil loudspeaker voice coil 9, and keyset 15 is positioned at indent platform 19.
Owing to adding the damping fin 2 of bottom, make the axial motion vibrating system more stable, therefore interior magnetic conductive board 13 and extension magnet 14 and the safe spacing of voice coil loudspeaker voice coil 9 can be suitable reduces, or directly suitably reduce the spacing between the outer of yoke 7 and magnet 8.Voice coil loudspeaker voice coil 9 is larger the closer to the magnetic field intensity of magnet 8 limit suffered by it, sensitivity higher (the known B of Ampere force formula F=BIL (magnetic field intensity) is larger, and Ampere force F is larger), conductor length and impedance certain when can select better line style.Extension magnet 14, cushion block 10 are fixing owing to being all circulus with yoke 7, only need nested fixing during assembling, fixed form can injection moulding, glue bonding, reach processing request.
After voice coil loudspeaker voice coil 9 is fixing by support 11, from inner side cabling to keyset 15, to transfer again horn wire, this outlet method not only can realize wire and to avoid shaking with oscillating plate 4 vibration the phenomenon of disconnected wire, well can also realize preprocessing, accelerate production procedure, magnet 8 magnetic when the later stage, scolding tin was fixed is avoided to cross the problem affecting by force flatiron operation, can scolding tin after first fixed transfer plate 15 during assembling, fixed transfer plate 15 after also can welding, the mode that fixed form can be bonding.
Damping means can be filled by the fit-up gap place of shell 1, shell 3, and such as foam, sponge and so on has appropriate flexible parts etc.
See Fig. 4, frequency response curve 01 is the LF-response curve of existing bone-conduction speaker, and low-frequency resonance peak value uprises instantaneously, causes low frequency transient to respond and is deteriorated, and low frequency stereovision is not strong, and texture is deteriorated.Frequency response curve 02 is the LF-response curve after the utility model increase damping fin 2, though curve amplitude is affected, its curve becomes more smooth.
The utility model is optimized assembly structure, suppresses the generation of abnormal resonance point, increases substantially speaker performance, does not need to increase very large space and comes to suppress unnecessary vibration.
Certainly, the embodiment of the above, just preferred embodiments of the present utility model, and unrestricted the utility model practical range, therefore all equivalences done according to structure, feature and the principle described in the utility model claim change or modify, and all should be included in the utility model claim.
Claims (10)
1. bone conduction earphone loud speaker, comprise upper casing, lower casing, oscillating plate, yoke, magnet, voice coil loudspeaker voice coil, cushion block, support, keyset, it is characterized in that: lower casing is arranged with damping fin, damping fin comprises outer platform, central platform, be connected by pole between outer platform with central platform, central platform contacts with yoke.
2. bone conduction earphone loud speaker according to claim 1, is characterized in that: yoke has male part, and ringwise, central platform is placed in the male part of yoke the central platform of damping fin.
3. bone conduction earphone loud speaker according to claim 1, it is characterized in that: be surrounded by damping body outside oscillating plate, lower casing has jacking block, and jacking block compresses damping body.
4. bone conduction earphone loud speaker according to claim 1 and 2, it is characterized in that: be equipped with shell fragment between support and oscillating plate, voice coil loudspeaker voice coil is connected with shell fragment by support.
5. bone conduction earphone loud speaker according to claim 1, is characterized in that: carriage center is provided with the indent platform of switching voice coil loudspeaker voice coil, and keyset is positioned at indent platform.
6. bone conduction earphone loud speaker according to claim 1, is characterized in that: magnet is installed in yoke, the upper end of magnet is provided with interior magnetic conductive board; The upper end of yoke has extension platform, extension platform is provided with extension magnet, and extension magnet is relative with interior magnetic conductive board, and cushion block compresses extension magnet.
7. bone conduction earphone loud speaker according to claim 4, be is characterized in that: shell fragment has inner ring and outer ring, inner ring is placed on support, outer ring is placed on cushion block, be connected between outer ring with inner ring by pole.
8. bone conduction earphone loud speaker according to claim 1, is characterized in that: pole is serpentine, " Z " shape, fan-shaped, whirlpool or vertical bar shaped.
9. bone conduction earphone loud speaker according to claim 1, is characterized in that: also comprise briquetting, and the central platform of damping fin and yoke compress by briquetting.
10. bone conduction earphone loud speaker according to claim 1, is characterized in that: oscillating plate has multiple projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087858.6U CN204425584U (en) | 2015-02-09 | 2015-02-09 | Bone conduction earphone loud speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520087858.6U CN204425584U (en) | 2015-02-09 | 2015-02-09 | Bone conduction earphone loud speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204425584U true CN204425584U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520087858.6U Expired - Fee Related CN204425584U (en) | 2015-02-09 | 2015-02-09 | Bone conduction earphone loud speaker |
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| Country | Link |
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| CN (1) | CN204425584U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837086A (en) * | 2015-02-09 | 2015-08-12 | 胡锦翔 | Bone conduction earphone speaker |
| CN106937221A (en) * | 2015-08-13 | 2017-07-07 | 深圳市韶音科技有限公司 | Bone-conduction speaker |
| CN107295431A (en) * | 2016-04-11 | 2017-10-24 | 富士通天株式会社 | loudspeaker unit |
| CN108476350A (en) * | 2016-01-14 | 2018-08-31 | 礼电子有限公司 | Vibrate output device and the portable electronic device of output vibration |
-
2015
- 2015-02-09 CN CN201520087858.6U patent/CN204425584U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837086A (en) * | 2015-02-09 | 2015-08-12 | 胡锦翔 | Bone conduction earphone speaker |
| CN106937221A (en) * | 2015-08-13 | 2017-07-07 | 深圳市韶音科技有限公司 | Bone-conduction speaker |
| CN106954152A (en) * | 2015-08-13 | 2017-07-14 | 深圳市韶音科技有限公司 | Bone-conduction speaker |
| CN106954151A (en) * | 2015-08-13 | 2017-07-14 | 深圳市韶音科技有限公司 | Bone-conduction speaker |
| CN106954152B (en) * | 2015-08-13 | 2019-07-19 | 深圳市韶音科技有限公司 | Bone-conduction speaker |
| CN106954151B (en) * | 2015-08-13 | 2019-09-06 | 深圳市韶音科技有限公司 | Bone-conduction speaker |
| CN108476350A (en) * | 2016-01-14 | 2018-08-31 | 礼电子有限公司 | Vibrate output device and the portable electronic device of output vibration |
| CN107295431A (en) * | 2016-04-11 | 2017-10-24 | 富士通天株式会社 | loudspeaker unit |
| CN107295431B (en) * | 2016-04-11 | 2019-07-26 | 富士通天株式会社 | Loudspeaker unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151105 Address after: 517300, No. 61, village center, Qingyun village committee, Ping Town, Longchuan County, Guangdong Province, China Patentee after: Liu Laifu Address before: Qinglong Town Ganzhou city Jiangxi province 341500 large county two village one or two groups of Hai Yan Patentee before: Hu Jinxiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20200209 |