CN115643512B - Shell fragment and bone conduction earphone oscillator - Google Patents

Shell fragment and bone conduction earphone oscillator Download PDF

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Publication number
CN115643512B
CN115643512B CN202211393388.7A CN202211393388A CN115643512B CN 115643512 B CN115643512 B CN 115643512B CN 202211393388 A CN202211393388 A CN 202211393388A CN 115643512 B CN115643512 B CN 115643512B
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China
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connecting part
elastic sheet
outer ring
extending
vibrator
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CN202211393388.7A
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CN115643512A (en
Inventor
盖伟东
毛华生
谢嗣海
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Dongguan Liesheng Electronic Co Ltd
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Dongguan Liesheng Electronic Co Ltd
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Priority to CN202211393388.7A priority Critical patent/CN115643512B/en
Publication of CN115643512A publication Critical patent/CN115643512A/en
Priority to PCT/CN2023/108793 priority patent/WO2024098833A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The application discloses a spring piece and a bone conduction earphone vibrator adopting the same, wherein the spring piece comprises an outer ring part, an inner connecting part and a connecting part which are integrally formed, and the spring piece is symmetrical along the central line of the X, Y direction; the inner edge of the outer ring part extends inwards to form an outer extending part, the outer edge of the inner connecting part extends outwards to form an inner extending part, and the extending direction of the outer extending part is opposite to that of the inner extending part; the connecting part is provided with at least two bending parts; the elastic sheet is made of alloy materials, and the alloy at least comprises: copper, iron, chromium, manganese. In the elastic sheet, the connecting parts are symmetrically designed and are arranged through reasonable distribution, namely, the connecting parts are ensured to have enough length so as to improve the sensitivity of the elastic sheet, and meanwhile, the elastic sheet provided by the application has better fatigue deformation resistance and better high-frequency extensibility by adopting alloy materials containing copper, iron, chromium and manganese, and wider amplitude is obtained, so that the vibrator can analyze more sounds.

Description

Shell fragment and bone conduction earphone oscillator
Technical Field
The application relates to the technical field of bone conduction sounding, in particular to an elastic sheet and a bone conduction earphone vibrator adopting the same.
Background
The bone conduction earphone converts sound into vibration through the bone conduction vibrator unit, and the working principle is as follows: the audio signal is converted into an electrical signal and then is transmitted to the vibrator unit through the connecting wire, so that the vibrator unit is driven to generate corresponding vibration, and a user can directly receive corresponding audio sound through the vibration.
The vibration generated by the bone conduction vibrator unit is interacted with an external elastic sheet through the self magnetic field vibration. The bone conduction vibrator is suspended in the shell through the elastic sheet, and vibration generated by the action of the magnetic field of the bone conduction vibrator depends on the elastic support of the elastic sheet, so that the vibration can be output, and the vibrator unit can be reset by the elastic sheet. Therefore, the sound quality of the bone conduction earphone vibrator can be directly affected by the elasticity of the elastic piece.
Because the elastic sheet in the bone conduction vibrator unit provides elastic support, the elastic sheet not only needs to form stable connection with the connecting part in the vibrator unit, but also cannot interfere with the parts of the elastic sheet, so that the vibration of the elastic sheet is prevented from being influenced. Meanwhile, the elastic sheet itself needs to have better sensitivity and ensure better high-frequency extensibility, so that the finally conducted sound has better resolving power and brightness.
The performance of the current lifting spring is mainly considered from two aspects of materials and structures. For materials, most spring plates are made of single materials, such as brass. There are also shrapnel made of alloy materials, but alloy materials with different components have great influence on the final performance of the shrapnel, and require a great amount of experiments and tests by research personnel. For the structure, the current spring sheet generally comprises: the outer ring part is an annular body which surrounds the periphery of the inner ring part. When in installation, the outer ring part is connected with the outer shell of the vibrator; the inner ring part is connected with a connecting bracket in the vibrator, the connecting bracket is connected with a coil of the magnetic circuit mechanism in the vibrator, namely, the connecting bracket is suspended on the elastic sheet through the inner ring part, when the magnetic circuit mechanism vibrates under the action of current, the connecting bracket is driven to vibrate together, and the inner ring part vibrates relative to the outer ring part. It can be seen that the performance of the spring is mainly determined by the arrangement of the connecting portion. If the whole length of the connecting part is shorter, the vibration space is limited, and sufficient vibration space cannot be provided for the vibrator, and if the length is too long, sufficient supporting force cannot be provided. Meanwhile, the distribution positions of the connecting parts also need to be designed, and at present, a conventional mode adopts an even number of symmetrically arranged connecting parts so as to form balanced vibration amplitude.
The inventor as a professional earphone producer, in order to improve the performance of the vibrator, the following technical scheme is proposed through continuous improvement and test.
Disclosure of Invention
The first technical problem to be solved by the application is to overcome the defects of the prior art and provide a spring piece for a bone conduction earphone vibrator.
In order to solve the first technical problem, the application adopts the following technical scheme: the elastic sheet comprises an integrally formed outer ring part, an inner connecting part and a plurality of connecting parts connected between the outer ring part and the inner connecting part, wherein the elastic sheet is symmetrical along the central line of the X, Y direction; the inner edge of the outer ring part extends inwards to form an outer extending part, the outer edge of the inner connecting part extends outwards to form an inner extending part, and the extending direction of the outer extending part is opposite to that of the inner extending part; the two ends of the connecting part are respectively connected with the outer extending part and the inner extending part; the connecting part comprises: the outer connecting part is connected with the outer extending part, the inner connecting part is connected with the inner extending part, the two bending parts are positioned between the outer connecting part and the inner connecting part, and the middle connecting part is positioned between the two bending parts; the outer connecting part and the inner connecting part are in parallel with each other and are not on the same straight line, and the middle connecting part is parallel with the outer connecting part and the inner connecting part; the elastic sheet is made of alloy materials, and the alloy at least comprises: copper, iron, chromium, manganese.
In the technical scheme of the elastic sheet, the path length of the connecting portion is not less than one half of the length of the outer ring portion in the long axis direction.
In addition, in the technical scheme of the elastic sheet, the outer ring part is in an annular runway shape, and the connecting protrusions and the connecting holes are formed on the outer edge of the outer ring part.
In the technical scheme of the elastic sheet, the inner connecting part is in a spindle shape, and the inner connecting part is provided with an electrode hole and a positioning hole.
In the technical scheme of the elastic sheet, the outer extending part, the connecting part and the inner extending part which are sequentially connected form a group of connecting units, four groups of connecting units are arranged between the outer ring part and the inner connecting part, and the four groups of connecting units are symmetrically distributed along the orthogonal central axis.
In the technical scheme of the elastic sheet, the alloy material for manufacturing the elastic sheet comprises the following components in percentage by weight: copper: 1 to 1.3 percent; chromium: 12-15%; manganese: 17-20%; nickel: 1.1-1.5%; silicon: 0.2-0.3%; phosphorus: less than 0.05%; molybdenum: less than 0.02%; iron: the balance.
The second technical problem to be solved by the present application is to provide a bone conduction earphone vibrator, which comprises: the shell comprises a shell, a magnetic circuit mechanism, a connecting support and an elastic piece connected to a port at the upper end of the shell, wherein the elastic piece is connected with the connecting support, and the elastic piece is one of the elastic pieces in the technical scheme.
In the technical scheme of the bone conduction earphone vibrator, the shell is connected with the outer ring part of the elastic piece, and the connecting bracket is connected with the inner connecting part.
By adopting the technical scheme, compared with the prior art, the application has the following beneficial effects:
firstly, in the elastic sheet, the connecting parts are symmetrically designed and are arranged through reasonable distribution, namely, the connecting parts are ensured to have enough length so as to improve the sensitivity of the elastic sheet, and meanwhile, the elastic sheet has better high-frequency extensibility and obtains wider amplitude, so that the vibrator can analyze more sounds.
Secondly, the elastic sheet provided by the application is made of alloy materials containing copper, iron, chromium and manganese instead of the traditional brass materials, and compared with the elastic sheet made of the traditional brass materials, the elastic sheet provided by the application has better fatigue deformation resistance and better rebound effect.
Drawings
FIG. 1 is a front view of a spring plate according to the present application;
fig. 2 is a perspective view of a bone conduction earphone vibrator according to the present application;
fig. 3 is a cross-sectional view of a bone conduction headset vibrator according to the present application;
fig. 4 is an exploded perspective view of a bone conduction headset vibrator according to the present application;
fig. 5 is a graph of acoustic testing of a bone conduction headset vibrator according to the present application.
Detailed Description
The application will be further described with reference to specific examples and figures.
The application relates to an elastic sheet and a bone conduction earphone vibrator. As shown in fig. 1, the elastic sheet 10 is symmetrical along a central line in a X, Y direction, and includes: an outer ring part 1, an inner joint part 2, and a connecting part 3 connected between the outer ring part 1 and the inner joint part 2. That is, the outer ring portion 1 shaped like an annular race track surrounds the outer periphery of the inner joint portion 2.
As shown in fig. 2 to 4, the outer ring portion 1 is connected to the housing 41, and in the present application, the outer ring portion 1 and the housing 41 may be integrally injection molded to fix the integral elastic sheet 10 and the housing 41 together. In order to enhance the connection stability, the outer rim of the outer ring part 1 is formed with a connection protrusion 12 and a connection hole 13, and the upper end rim of the shell is formed with a pressing edge 411 and a hole slot 412 corresponding to the connection protrusion 12. Wherein the middle pressure edge 411 is at least partially pressed on the outer ring portion 1.
The inner edge of the outer ring part 1 extends inwards to form an outer extension part 11 connected with the connecting part 3. The outer extension 11 gradually decreases in width as it extends from the inner edge of the outer ring portion 1 to the outer connecting portion 31. This prevents stress concentration from occurring.
The inner joint part 2 is substantially a spindle for connection to the connecting bracket 43. An inner extension 21 connected to the connecting portion 3 is formed to extend outward from the outer edge of the inner connection portion 2. The width of the inner extension portion 21 gradually decreases from the outer edge of the inner joint portion 2 to the inner connecting portion 32, and the extending direction of the outer extension portion 11 is opposite to that of the inner extension portion 21.
An electrode hole 22 is formed in the middle of the inner joint part 2 in a nearly circular shape, and a positioning hole 23 is formed around the periphery of the electrode hole 22.
The connecting part 3 is used for connecting the outer ring part 1 and the inner connecting part 2, and the outer ring part 11, the connecting part 3 and the inner extending part 21 which are connected in sequence are regarded as a group of connecting units, in order to ensure the stress balance between the inner ring part and the outer ring part, four groups of connecting units are arranged between the outer ring part 1 and the inner connecting part 2, and the four groups of connecting units are symmetrically distributed along the orthogonal central axis. With reference to fig. 1, the four groups of connection units are symmetrical along the longitudinal central axis X and the transverse central axis Y, so that the stress between the inner ring portion and the outer ring portion can be uniformly distributed, and the balance of the whole vibration can be ensured.
The connecting part 3 includes: an outer connecting portion 31 connected to the outer extending portion 11, an inner connecting portion 32 connected to the inner extending portion 21, two bending portions 33, 34 located between the outer connecting portion 31 and the inner connecting portion 32, and an intermediate connecting portion 35 located between the two bending portions.
In order to effectively utilize the space of the spring plate, the length of the connecting portion is further extended in the limited space to provide a sufficient elastic vibration space, the extending direction of the outer extending portion 11 and the extending direction of the inner extending portion 21 are opposite in the same group of connecting units, and the outer connecting portion 31 and the inner connecting portion 32 are parallel to each other not on the same straight line. Meanwhile, the middle connecting part 35 is parallel to the outer connecting part 31 and the inner connecting part 32.
In the connection unit located above the right side in the drawing, as shown in fig. 1, the outer extension 11 horizontally extends to the left to be butted with the outer connection 31, then forms a 180 ° turn by the first bending portion 33, extends to the right by the intermediate connection portion 35, forms a 180 ° turn by the second bending portion 34, and is connected with the inner extension 21 by the inner connection portion 32.
The connecting part 3 completes the change of the extending direction through the two bending parts 33 and 34, realizes the connection before the outer ring part 1 and the inner connecting part 2, and effectively prolongs the length of the whole connecting part. Preferably, the path length of the connecting portion 3 is not less than one half of the length of the outer ring portion 1 in the longitudinal direction.
The elastic sheet is made of alloy materials, and the alloy mainly comprises copper, iron, chromium and manganese. After a large number of vibration tests, the alloy materials finally selected in the application are as follows.
The alloy material comprises the following components in percentage by weight:
copper: 1 to 1.3 percent; chromium: 12-15%; manganese: 17-20%; nickel: 1.1-1.5%; silicon: 0.2-0.3%;
phosphorus: less than 0.05%; molybdenum: less than 0.02%; iron: the balance.
As shown in fig. 2 to 4, this is a bone conduction earphone vibrator 4, which includes: spring plate 10, housing 41, magnetic circuit mechanism 42, and connection bracket 43. The housing 41 and the magnetic conductive cover 421 in the magnetic circuit mechanism 42 enclose a cavity, and the spring 10 is located at the upper end of the cavity and is connected to the connection bracket 43.
The housing 41 is made of a plastic material in a ring shape, and the housing 41 is located at the periphery of the connecting bracket 43. The connecting bracket 43 is located between the magnetic circuit mechanism 42 and the spring plate 10, and the connecting bracket 43 is suspended in the housing 41 through the spring plate 10. The connecting bracket 43 is made of plastic material, and the upper end surface of the connecting bracket is provided with a positioning column 431. In the present embodiment, four positioning posts 431 are provided in total, and electrode pads 44 for supplying power to the magnetic circuit mechanism 42 are provided in the area surrounded by the four positioning posts 431. The electrode sheet 44 is electrically connected to a coil 422 in the magnetic circuit mechanism 42.
The electrode tab 44 extends from bottom to top through the electrode aperture 22 in the inner joint part 2. The positioning column 431 on the connecting bracket 43 is matched with the positioning hole 23 in a positioning way, so that the connecting bracket 43 and the inner joint part 2 are connected.
The magnetic circuit mechanism 42 includes a U-shaped magnetic conductive cover 421, and two ends of the magnetic conductive cover 421 are connected to the lower end of the housing 41, so as to enclose a cavity in which the connection bracket 43 is disposed. When the magnetic circuit mechanism vibrates under the action of current, the connecting bracket 43 is driven to vibrate together, and the inner joint part 2 vibrates relative to the outer ring part 1.
The following table shows the weight percentages of the components in the preferred embodiment of the spring according to the present application.
The vibrator of the elastic sheet made of the total material of the preferred embodiment has better sensitivity than other materials, the sensitivity can reach about 108dB, the high-frequency extension is better, and the vibrator has excellent resolving power and brightness. The whole bandwidth performance is also more excellent, the three frequencies are balanced, and the strength and the reliability of the alloy material are convenient and superior to those of the vibrator made of a single material.
The elastic sheet of the preferred embodiment is used in the bone conduction ear vibrator for acoustic testing. Fig. 5 shows an acoustic test graph of the vibrator of the present application and a comparative product. Wherein the spring in the comparison product is made of a conventional brass material.
As can be seen from the analysis of FIG. 5, the F0 of the comparison product is about 130hz, the oscillator F0 of the oscillator is about 180hz, and the amplitude is wider; the comparative product differs from the present application by about 1dB at 1 khz. The high-frequency part of the application has larger obviously upward detection radian than a comparison product, has better extension and can analyze more sound.
In addition, after the elastic sheet made of the alloy material is used in the bone conduction earphone vibrator, excellent acoustic performance of the vibrator can be ensured, meanwhile, the strength and reliability of the vibrator are better represented, and the following experiment reports of the falling experiment and the roller experiment of the vibrator can exert normal working performance and have no damage to appearance after various test conditions.
Test one: drop test
Test conditions: 1.8 meters in height, 12 times (2 times for each face of the vibrator, 2 wheels for each face);
determination criteria: after the test, the appearance is normal and the function is normal;
test instrument: a drop test machine;
test sample: three samples were selected;
test results: through the test, the appearance of three samples for the test is all normal, and the shell fragment does not take place to warp, and the oscillator function is normal. And judging whether the result is qualified.
And II, testing: roller testing
Test conditions: the height is 1 meter, the dropping is 75 circles (150 times), and the rotating speed is 4-7 revolutions per minute;
determination criteria: after the test, the appearance is normal and the function is normal;
test instrument: a roller drop test machine;
test sample: three samples were selected;
test results: through the test, the appearance of three samples for the test is all normal, and the shell fragment does not take place to warp, and the oscillator function is normal. And judging whether the result is qualified.
It is understood that the foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, but rather is to be accorded the full scope of all such modifications and equivalent structures, features and principles as set forth herein.

Claims (8)

1. The elastic sheet comprises an integrally formed outer ring part, an inner connecting part and a plurality of connecting parts connected between the outer ring part and the inner connecting part, wherein the elastic sheet is symmetrical along the central line of the X, Y direction; the method is characterized in that:
the inner edge of the outer ring part extends inwards to form an outer extending part, the outer edge of the inner connecting part extends outwards to form an inner extending part, and the extending direction of the outer extending part is opposite to that of the inner extending part; the two ends of the connecting part are respectively connected with the outer extending part and the inner extending part;
the connecting part comprises: the outer connecting part is connected with the outer extending part, the inner connecting part is connected with the inner extending part, the two bending parts are positioned between the outer connecting part and the inner connecting part, and the middle connecting part is positioned between the two bending parts; the outer connecting part and the inner connecting part are in parallel with each other and are not on the same straight line, and the middle connecting part is parallel with the outer connecting part and the inner connecting part;
the elastic sheet is made of alloy materials, and the alloy at least comprises: copper, iron, chromium, manganese.
2. A spring according to claim 1, wherein: the path length of the connecting part is not less than one half of the length of the outer ring part in the long axis direction.
3. A spring according to claim 1, wherein: the outer ring part is in an annular runway shape, and connecting protrusions and connecting holes are formed on the outer edge of the outer ring part.
4. A spring according to claim 1, wherein: the internal connection part is in a spindle shape, and an electrode hole and a positioning hole are formed in the internal connection part.
5. A spring according to claim 1, wherein: the outer extension part, the connecting part and the inner extension part which are connected in sequence form a group of connecting units, four groups of connecting units are arranged between the outer ring part and the inner connection part, and the four groups of connecting units are symmetrically distributed along the orthogonal central axis.
6. A spring according to any one of claims 1-5, wherein: the alloy material for manufacturing the shrapnel comprises the following components in percentage by weight:
copper: 1 to 1.3 percent; chromium: 12-15%; manganese: 17-20%; nickel: 1.1-1.5%; silicon: 0.2-0.3%;
phosphorus: less than 0.05%; molybdenum: less than 0.02%; iron: the balance.
7. A bone conduction earphone vibrator comprising: casing, magnetic circuit mechanism, linking bridge to and connect in the shell fragment of the port department of casing upper end, and shell fragment and linking bridge connection, its characterized in that: the elastic sheet adopts an elastic sheet according to claim 6.
8. The bone conduction headset vibrator of claim 7, wherein: the shell is connected with the outer ring part of the elastic sheet, and the connecting bracket is connected with the inner connecting part.
CN202211393388.7A 2022-11-08 2022-11-08 Shell fragment and bone conduction earphone oscillator Active CN115643512B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202211393388.7A CN115643512B (en) 2022-11-08 2022-11-08 Shell fragment and bone conduction earphone oscillator
PCT/CN2023/108793 WO2024098833A1 (en) 2022-11-08 2023-07-24 Elastic piece and bone conduction earphone vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211393388.7A CN115643512B (en) 2022-11-08 2022-11-08 Shell fragment and bone conduction earphone oscillator

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CN115643512B true CN115643512B (en) 2023-11-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115643512B (en) * 2022-11-08 2023-11-07 东莞市猎声电子科技有限公司 Shell fragment and bone conduction earphone oscillator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109922398A (en) * 2019-04-10 2019-06-21 深圳湃声声学科技有限公司 A kind of bone-conduction speaker
WO2020238708A1 (en) * 2019-05-29 2020-12-03 朱达云 Bone conduction vibrator and bone conduction hearing device
CN216357217U (en) * 2021-10-13 2022-04-19 苏州索迩电子技术有限公司 Osteoacusis sound generating mechanism and osteoacusis earphone
CN216357216U (en) * 2021-10-13 2022-04-19 苏州索迩电子技术有限公司 Elastic sheet and bone conduction sound production device
CN115002634A (en) * 2022-05-26 2022-09-02 东莞市皖太电子科技有限公司 Novel bone conduction oscillator parcel shell fragment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101039090B1 (en) * 2008-05-21 2011-06-20 박의봉 speaker apparatus
CN105472491B (en) * 2016-01-04 2019-08-09 歌尔股份有限公司 A kind of multi-function device with vibrating function and vocal function
CN216491035U (en) * 2021-12-01 2022-05-10 杭州声联智能科技有限公司 Vibration assembly and bone conduction vibrator with same
CN115643512B (en) * 2022-11-08 2023-11-07 东莞市猎声电子科技有限公司 Shell fragment and bone conduction earphone oscillator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109922398A (en) * 2019-04-10 2019-06-21 深圳湃声声学科技有限公司 A kind of bone-conduction speaker
WO2020238708A1 (en) * 2019-05-29 2020-12-03 朱达云 Bone conduction vibrator and bone conduction hearing device
CN216357217U (en) * 2021-10-13 2022-04-19 苏州索迩电子技术有限公司 Osteoacusis sound generating mechanism and osteoacusis earphone
CN216357216U (en) * 2021-10-13 2022-04-19 苏州索迩电子技术有限公司 Elastic sheet and bone conduction sound production device
CN115002634A (en) * 2022-05-26 2022-09-02 东莞市皖太电子科技有限公司 Novel bone conduction oscillator parcel shell fragment

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