CN111918164A - Manufacturing method of Bluetooth earphone and Bluetooth earphone - Google Patents
Manufacturing method of Bluetooth earphone and Bluetooth earphone Download PDFInfo
- Publication number
- CN111918164A CN111918164A CN202010756149.8A CN202010756149A CN111918164A CN 111918164 A CN111918164 A CN 111918164A CN 202010756149 A CN202010756149 A CN 202010756149A CN 111918164 A CN111918164 A CN 111918164A
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- bluetooth headset
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 46
- 210000000883 ear external Anatomy 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000741 silica gel Substances 0.000 claims description 16
- 229910002027 silica gel Inorganic materials 0.000 claims description 16
- 210000000613 ear canal Anatomy 0.000 claims description 8
- 239000012778 molding material Substances 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 238000004018 waxing Methods 0.000 claims description 3
- 238000010146 3D printing Methods 0.000 claims description 2
- 238000000016 photochemical curing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010923 batch production Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RVCKCEDKBVEEHL-UHFFFAOYSA-N 2,3,4,5,6-pentachlorobenzyl alcohol Chemical compound OCC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl RVCKCEDKBVEEHL-UHFFFAOYSA-N 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- 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
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2420/00—Details of connection covered by H04R, not provided for in its groups
- H04R2420/07—Applications of wireless loudspeakers or wireless microphones
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
Abstract
The invention discloses a manufacturing method of a Bluetooth headset and the Bluetooth headset, wherein the manufacturing method of the Bluetooth headset comprises the following steps: collecting three-dimensional information inside external ears of a user; manufacturing a first shell according to the three-dimensional information; manufacturing the second shell in batches; preparing a loudspeaker module and a Bluetooth module; the first casing of equipment, speaker module, second casing and bluetooth module, promptly, the speaker module is installed in first casing, and the bluetooth module is installed in the second casing, and first casing is connected with the second casing, and the bluetooth module is connected with the speaker module electricity. By adopting the method, the customized manufacturing of the Bluetooth headset is realized, and the manufacturing cost and the manufacturing efficiency of the Bluetooth headset are ensured.
Description
Technical Field
The invention relates to the technical field of Bluetooth headsets, in particular to a manufacturing method of a Bluetooth headset and the Bluetooth headset.
Background
In the related art, a bluetooth headset includes a sound unit and a bluetooth unit, where the sound unit includes a first housing embedded in an external ear and a speaker module disposed in the first housing; the bluetooth unit includes the second casing that is located external ear and sets up the bluetooth module in the second casing. Specifically, in the manufacturing process of the bluetooth headset, the first shell, the second shell and the like are produced in batch through the die, so that the bluetooth headset is in a uniform fixed shape, the user experience is poor, and the personalized requirements of a user cannot be met.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a manufacturing method of the Bluetooth headset, which can meet the personalized requirements of users and enable the Bluetooth headset to be manufactured at low cost and quickly.
The invention also provides the Bluetooth headset manufactured by the manufacturing method.
The method for manufacturing the Bluetooth headset according to the embodiment of the first aspect of the invention comprises the following steps:
collecting three-dimensional information inside external ears of a user;
manufacturing a first shell according to the three-dimensional information;
manufacturing the second shell in batches;
preparing a loudspeaker module and a Bluetooth module;
and assembling the first shell, the loudspeaker module, the second shell and the Bluetooth module, namely, the loudspeaker module is arranged in the first shell, the Bluetooth module is arranged in the second shell, the first shell is connected with the second shell, and the Bluetooth module is electrically connected with the loudspeaker module.
The method for manufacturing the Bluetooth headset according to the embodiment of the first aspect of the invention has at least the following technical effects: in the embodiment, the three-dimensional information inside the outer ear of the user is utilized to customize and manufacture the first shell, the external condition of the first shell is matched with the internal condition of the outer ear of the user, and therefore the customized manufacturing of the Bluetooth headset is realized in the embodiment; when the Bluetooth headset is used, the outer part of the second shell can be well attached to the inner part of the outer ear, so that the experience of a user on the headset is improved, and the requirement of the user is further met; simultaneously, but the second casing batch production to reduced bluetooth headset's cost of manufacture, and can make bluetooth headset fast and in a large number, in order to satisfy the demand in market.
According to some embodiments of the invention, collecting three-dimensional information inside the outer ear of the user comprises the steps of: preparing silica gel to be solidified; injecting silica gel into the external ear; taking out the solidified silica gel; and collecting the external three-dimensional information of the solidified silica gel.
According to some embodiments of the invention, the first shell is produced by a 3D printing method based on the three-dimensional information.
According to some embodiments of the invention, collecting three-dimensional information inside the outer ear of the user comprises the steps of: making an ear impression; waxing the surface of the ear impression; and pouring and molding the ear impression mold into a mold cavity taking the ear impression mold as a mold core, and taking out the ear impression mold after the molding material is cured to obtain a female mold, wherein the female mold has three-dimensional information inside the external ear of the user.
According to some embodiments of the invention, a photosensitive resin is injected into the female mold according to the three-dimensional information, and then a photo-curing process is performed, and the cured first shell is removed from the female mold.
According to the bluetooth headset of the embodiment of the second aspect of the present invention, the bluetooth headset is manufactured by the manufacturing method described above.
The bluetooth headset according to the embodiment of the second aspect of the present invention has at least the following advantages: by adopting the method, the following two advantages are achieved: the first point is that the first shell of the Bluetooth headset realizes the customized smooth manufacturing of the Bluetooth headset through the three-dimensional information of the external auditory canal of a user, and when the Bluetooth headset is worn, the outer surface of the first shell of the Bluetooth headset is well attached to the inside of the external auditory canal, so that the experience feeling of the Bluetooth headset during use is improved, and the requirements of the user on quality are met; the second point utilizes the injection molding machine, and the second casing is by batch production, and bluetooth module and speaker module also all adopt batch production, has reduced bluetooth headset's cost of manufacture through this kind of mode to the preparation is convenient, consequently can be fast, make bluetooth headset in a large number, in order to satisfy the demand in market.
According to some embodiments of the invention, a first connection hole is reserved in the first housing, a second connection hole is reserved in the second housing, and a male-female connection seat for electrically connecting the speaker module and the bluetooth module is connected between the first connection hole and the second connection hole.
According to some embodiments of the invention, the male and female connector holder comprises: the first connecting seat is connected to the first connecting hole and is electrically connected with the loudspeaker module; and the second connecting seat is connected with the second connecting hole and is electrically connected with the Bluetooth module, and the first connecting seat is connected with the second connecting seat in an inserting manner.
According to some embodiments of the invention, the first housing has a mounting opening for mounting the first connection seat, the mounting opening is connected with a rear cover for closing the mounting opening, and the rear cover has a reserved surface on the back for conveniently pasting various marks.
According to some embodiments of the invention, the first housing has: a body capable of being embedded in an auricle; the sound part is positioned on the body and can be embedded into the external auditory canal; the first limiting part is positioned on the body and can be embedded into the triangular socket; the second limiting part is positioned on the body and can be embedded into the concha cavity.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of a flow structure for manufacturing a bluetooth headset according to an embodiment of the present invention;
FIG. 2 is a schematic view of a flow structure for manufacturing the first housing according to an embodiment of the present invention;
fig. 3 is a schematic view of another flow structure for manufacturing the first housing according to the embodiment of the invention;
fig. 4 is a schematic overall structure diagram of a bluetooth headset according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a first housing according to an embodiment of the invention;
FIG. 6 is an exploded view of a Bluetooth headset according to an embodiment of the present invention;
fig. 7 is a schematic back structure diagram of the first housing in the embodiment of the invention.
Reference numerals:
the bluetooth headset comprises a bluetooth headset 100, a first shell 110, a body 111, a sound part 112, a first limit part 113, a second limit part 114, a mounting port 115, a rear cover 116, a first connecting hole 117, a speaker module 120, a second shell 130, a second connecting hole 131, a bluetooth module 140, a male-female connecting seat 150, a first connecting seat 151 and a second connecting seat 152.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A method of manufacturing a bluetooth headset according to an embodiment of the present invention is described below with reference to fig. 1 and 7.
Referring to fig. 1, 5 and 6, a method for manufacturing a bluetooth headset according to an embodiment of the first aspect of the present invention includes the following steps;
step 1, collecting three-dimensional information inside external ears of a user;
step 2, manufacturing a first shell 110 according to the three-dimensional information;
step 3, manufacturing the second shell 130 in batches;
step 4, preparing the speaker module 120 and the bluetooth module 140;
and 5, assembling the first shell 110, the speaker module 120, the second shell 130 and the bluetooth module 140, namely, the speaker module 120 is located in the first shell 110, the bluetooth module 140 is located in the second shell 130, the first shell 110 is connected with the second shell 130, the bluetooth module 140 is electrically connected with the speaker module 120, and the manufacturing of the bluetooth headset 100 is completed.
Specifically, in the present embodiment, the three-dimensional information inside the outer ear of the user is utilized to customize the first housing 110, and the external condition of the first housing 110 is adapted to the internal condition of the outer ear of the user, so that the present embodiment realizes the customized manufacturing of the bluetooth headset 100; when the bluetooth headset 100 is used, the exterior of the second shell 130 can be better attached to the interior of the outer ear, so that the experience of a user on the headset is improved, and the requirements of the user are further met; meanwhile, the second housing 130 is mass-produced by using an injection molding machine or the like, thereby reducing the manufacturing cost of the bluetooth headset 100, and enabling the bluetooth headset 100 to be manufactured quickly and in large quantities to satisfy the demand of the market.
In some embodiments, the following two schemes may be used to customize the first housing 110, as follows:
the first scheme is as follows: s1, preparing the silica gel to be solidified; s2, injecting silica gel into the external ear, wherein the silica gel just fills the auricle and the external auditory canal; s3, removing the silica gel in the external ear after the silica gel is solidified, wherein the outline of the external part of the silica gel is basically consistent with the outline of the internal part of the external ear; s4, preparing a 3D scanner, and acquiring external three-dimensional information of the solidified silica gel through the 3D scanner so as to acquire information inside the external ear; s5, preparing a 3D printer, transmitting the information obtained in step 4 to the 3D printer, and printing the required first shell 110 by the 3D printer, thereby implementing the customized customization of the bluetooth headset 100 (see fig. 2).
It should be noted that S1 to S4 further disclose how to collect three-dimensional information inside the external ear of the user, so as to make the first shell 110 of the bluetooth headset 100 customized; meanwhile, S5 further discloses "the first shell 110 is customized by three-dimensional information", so that the exclusive customization of the bluetooth headset 100 is realized.
A second protocol, S1, making an ear impression; s2, waxing the surface of the ear impression; s3, casting a molding material into the cavity with the ear impression mold as the core, and taking out the ear impression mold after the molding material is solidified to obtain a female mold, wherein the female mold is internally provided with three-dimensional information of the interior of an outdoor ear; s4, injecting photosensitive resin into the female mold, performing light curing, and taking out the cured first housing 110 from the female mold, thereby realizing the customized production of the bluetooth headset 100 (see fig. 3).
It should be noted that S1 to S3 further disclose how to collect three-dimensional information inside the external ear of the user, so as to make the first shell 110 of the bluetooth headset 100 customized; meanwhile, S4 further discloses "the first shell 110 is customized by three-dimensional information", so that the exclusive customization of the bluetooth headset 100 is realized.
In some embodiments, the molding material may be selected from one of silica gel or agar.
In a further embodiment, the bluetooth module 140 is manufactured in batch, and includes PCBA, bluetooth chip, RF antenna, passive components, battery, connection male, charging PIN, and related electronic components such as a microphone; similarly, the speaker module 120 is manufactured in batch, and includes a microphone, a connecting socket, and the like. Through the scheme, the manufacturing cost of the Bluetooth headset 100 is further reduced, so that the Bluetooth headset 100 can be manufactured in a large quantity to meet the market demand.
The bluetooth headset 100 according to the embodiment of the second aspect of the present invention, obtained by the above method for manufacturing the bluetooth headset 100, has the following two advantages: firstly, the first shell 110 of the present application realizes the customized slide manufacturing of the bluetooth headset 100 through the three-dimensional information of the external auditory canal of the user, and when wearing the bluetooth headset 100, the outer surface of the first shell 110 of the bluetooth headset 100 better fits in the external auditory canal, thereby improving the experience of the bluetooth headset 100 when in use and meeting the requirements of the user on quality; the second point, utilize the injection molding machine, second casing 130 is by batch production, and bluetooth module 140 and speaker module 120 also all adopt batch production, have reduced bluetooth headset 100's cost of manufacture through this kind of mode, and the preparation is more convenient to can make bluetooth headset 100 in a large number, with the demand that satisfies market.
In some embodiments, the first housing 110 is formed by integrally arranging a body 111, a sound part 112, a first limiting part 113 and a second limiting part 114, the body 111 is a housing with a smooth arc-shaped surface, the body 111 is movably embedded in an auricle, the sound part 112 is an arc-shaped protrusion of the body 111 and can be embedded in an external auditory canal, so that sound is better transmitted; the first position-limiting part 113 is another protrusion on the surface of the body 111, and the first position-limiting part 113 can be movably embedded in a triangular fossa in the external ear, so as to further facilitate wearing of the first shell 110; the second position-limiting portion 114 is another protrusion on the surface of the body 111, and the second positioning portion can be movably embedded in the concha cavity, so as to further facilitate the wearing of the first housing 110.
In some embodiments, referring to fig. 6 and 7, a side of the first casing 110 away from the audio portion 112 has a mounting opening 115, the mounting opening 115 is detachably connected to a rear cover 116 for closing the mounting opening 115, and a reserved surface is provided on a back surface of the rear cover 116, so that some specific marks can be conveniently pasted on the reserved surface, and the bluetooth headset 100 of the user is more distinctive; further, by providing the mounting port 115, the speaker module 120 is mounted inside the acoustic unit 112 and the main body 111 through the mounting port 115.
In a further embodiment, a first connection hole 117 is reserved in a side wall of the body 111, a second connection hole 131 is reserved in a side wall of the second housing 130, a male and female connection seat 150 is detachably connected between the first connection hole 117 and the second connection hole 131, and the male and female connection seat 150 realizes the detachable connection of the first housing 110 and the second housing 130; in addition, the male and female connection sockets 150 realize the electrical connection between the bluetooth module 140 and the speaker module 120, and realize the cooperative use of the bluetooth module 140 and the speaker module 120.
The male and female connection seats 150 are MMCX connectors and respectively include a first connection seat 151 and a second connection seat 152, the first connection seat 151 is detachably mounted at the first connection hole 117 through the mounting port 115, an electrical connection portion at one end of the first connection seat 151 is electrically connected with the speaker module 120, and the other end of the first connection seat 151 is provided with a jack; meanwhile, the second connection socket 152 is installed at the second connection hole 131, an electrical connection portion of one end portion of the second connection socket 152 is electrically connected to the bluetooth module 140, and a probe of the other end portion of the second connection socket 152 is inserted into the receptacle, thereby realizing detachable connection of the first connection socket 151 and the second connection socket 152, and realizing electrical connection of the bluetooth module 140 and the speaker module 120.
It can be understood that, through the arrangement of the male and female connection bases 150, the male and female connection bases 150 realize the independent arrangement of the first housing 110 and the second housing 130, so that the integrated manufacture of the first housing 110 can be satisfied.
In the description of the present specification, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The manufacturing method of the Bluetooth headset is characterized by comprising the following steps:
collecting three-dimensional information inside external ears of a user;
manufacturing a first shell according to the three-dimensional information;
manufacturing the second shell in batches;
preparing a loudspeaker module and a Bluetooth module;
and assembling the first shell, the loudspeaker module, the second shell and the Bluetooth module, namely, the loudspeaker module is arranged in the first shell, the Bluetooth module is arranged in the second shell, the first shell is connected with the second shell, and the Bluetooth module is electrically connected with the loudspeaker module.
2. The method for manufacturing a bluetooth headset according to claim 1, wherein the step of collecting three-dimensional information inside the outer ear of the user comprises the steps of:
preparing silica gel to be solidified;
injecting silica gel into the external ear;
taking out the solidified silica gel;
and collecting the external three-dimensional information of the solidified silica gel.
3. The method of manufacturing a bluetooth headset according to claim 2, wherein the first housing is manufactured by 3D printing according to the three-dimensional information.
4. The method for manufacturing a bluetooth headset according to claim 1, wherein the step of collecting three-dimensional information inside the outer ear of the user comprises the steps of:
making an ear impression;
waxing the surface of the ear impression;
and pouring a molding material into the cavity with the ear impression as the core, and taking out the ear impression after the molding material is solidified to obtain a female die, wherein the female die is internally provided with three-dimensional information of the inner part of the external ear of the user.
5. The method of claim 4, wherein a photosensitive resin is injected into the cavity mold according to the three-dimensional signal, and then a photo-curing process is performed, and the cured first housing is taken out of the cavity mold.
6. A Bluetooth headset, characterized in that the Bluetooth headset is manufactured by the manufacturing method of any one of claims 1 to 5.
7. The bluetooth headset as claimed in claim 6, wherein the first housing is formed with a first connection hole, the second housing is formed with a second connection hole, and a male-female connection socket for electrically connecting the speaker module and the bluetooth module is connected between the first connection hole and the second connection hole.
8. The bluetooth headset of claim 7, wherein the male-female connection holder comprises:
the first connecting seat is connected to the first connecting hole and is electrically connected with the loudspeaker module;
and the second connecting seat is connected with the second connecting hole and is electrically connected with the Bluetooth module, and the first connecting seat is connected with the second connecting seat in an inserting manner.
9. The bluetooth headset of claim 8, wherein the first housing has a mounting opening for mounting the first connecting seat, the mounting opening is connected with a rear cover for closing the mounting opening, and the back of the rear cover has a reserved surface for sticking a mark.
10. The bluetooth headset of claim 6, wherein the first housing has:
a body capable of being embedded in an auricle;
the sound part is positioned on the body and can be embedded into the external auditory canal;
the first limiting part is positioned on the body and can be embedded into the triangular socket;
the second limiting part is positioned on the body and can be embedded into the concha cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010756149.8A CN111918164A (en) | 2020-07-31 | 2020-07-31 | Manufacturing method of Bluetooth earphone and Bluetooth earphone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010756149.8A CN111918164A (en) | 2020-07-31 | 2020-07-31 | Manufacturing method of Bluetooth earphone and Bluetooth earphone |
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| CN111918164A true CN111918164A (en) | 2020-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114760581A (en) * | 2021-01-08 | 2022-07-15 | 深圳市玖舟电子有限公司 | Manufacturing method of earphone |
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| CN110800318A (en) * | 2017-06-30 | 2020-02-14 | 伯斯有限公司 | Custom earplug |
| CN207665151U (en) * | 2017-09-18 | 2018-07-27 | 东莞泉声电子有限公司 | Earphone heads with MMCX sockets and its detachable earphone component |
| US20190208307A1 (en) * | 2017-12-28 | 2019-07-04 | 1964 Ears Llc | Earphone Housing with Integrated Tuning Features |
| CN209151371U (en) * | 2019-01-31 | 2019-07-23 | 北京三帝国康科技有限公司 | A kind of 3D printing customization hearing aid shell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114760581A (en) * | 2021-01-08 | 2022-07-15 | 深圳市玖舟电子有限公司 | Manufacturing method of earphone |
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