阅读说明：本技术 全封闭实心倒模的无线耳道式耳机及其制作方法 (Totally-enclosed solid reverse-mold wireless ear canal type earphone and manufacturing method thereof ) 是由 高大伟 于 2021-08-11 设计创作，主要内容包括：全封闭实心倒模的无线耳道式耳机,具有一个本体,提供一个支架,本体系以绑定有驱动单元和发声单元的支架为骨架、采用树脂倒模固化而成的透明实心结构体,支架以及驱动单元、发声单元被本体的透明实心结构体封装在内；发声腔体的前腔和后腔系分别单独成型的结构体,动圈模组同轴的装入前腔的后端,前腔的后端同轴的对接于后腔的前端,动圈模组的振膜在中心部分设置为采用透气材质制成的球顶,球顶为发声腔体的前腔、后腔构建出气压平衡的呼吸介面。全封闭实心倒模的无线耳道式耳机制作方法,将设于耳机内部的驱动单元、发声单元分别拼装在支架中进行绑定,在模具中灌注树脂,形成内部封装有支架以及驱动单元、发声单元的透明实心结构体。(The totally-enclosed solid reverse-mold wireless auditory canal type earphone is provided with a body and a support, wherein the body is a transparent solid structure body which is formed by taking the support bound with a driving unit and a sound generating unit as a framework and adopting resin reverse mold curing, and the support, the driving unit and the sound generating unit are encapsulated by the transparent solid structure body of the body; the front cavity and the rear cavity of the sounding cavity are respectively and independently formed structural bodies, the movable coil module is coaxially arranged at the rear end of the front cavity, the rear end of the front cavity is coaxially butted with the front end of the rear cavity, the vibrating diaphragm of the movable coil module is arranged at the central part of a ball top made of a breathable material, and the ball top is a breathing interface for constructing the front cavity and the rear cavity of the sounding cavity and balancing air pressure. A method for manufacturing a totally-enclosed solid reverse-mode wireless auditory canal type earphone comprises the steps of respectively assembling a driving unit and a sound generating unit which are arranged in the earphone in a support for binding, and pouring resin into a mold to form a transparent solid structure body in which the support, the driving unit and the sound generating unit are packaged.)

1. The totally-enclosed solid reverse-mode wireless ear canal type earphone is provided with a body, a driving unit and a sound production unit are arranged in the body, the sound production unit comprises a sound production cavity and a moving coil module arranged in the sound production cavity, the moving coil module is provided with a signal line connected to the driving unit, the sound production cavity is divided into a front cavity with the front end extending out of the body and a rear cavity positioned in the body by taking the moving coil module as a boundary, and the front end of the front cavity is sleeved with a soft rubber plug;

the method is characterized in that:

providing a support, and respectively assembling and binding a driving unit and a sound production unit in the support;

the body is a transparent solid structure body which is formed by using a support bound with a driving unit and a sounding unit as a framework and adopting resin reverse mould curing, and the support, the driving unit and the sounding unit are encapsulated by the transparent solid structure body of the body;

the driving unit is provided with a main control module, a power supply module and a charging module, the charging module charges the power supply module in a mode of coupling an external power supply, the power supply module supplies power to the Bluetooth main control module, and the main control module acquires audio signals from external sound source equipment in a wireless communication mode;

the front cavity and the rear cavity of the sounding cavity are respectively and independently formed structural bodies, the front cavity is of a tubular structure, the rear cavity is of a cylindrical structure with a closed rear end, the moving coil module is coaxially arranged at the rear end of the front cavity, and the rear end of the front cavity is coaxially butted with the front end of the rear cavity; the rear cavity is provided with a through hole on the rear end wall, and a signal wire of the moving coil module penetrates out of the sounding cavity from the through hole;

the vibrating diaphragm of the moving coil module is provided with a dome made of a breathable material at the central part, and the dome is a breathing interface for air pressure balance constructed by a front cavity and a rear cavity of the sounding cavity.

2. The totally enclosed solid reverse-molded wireless ear canal earphone according to claim 1, wherein: the bracket is provided with a cup-shaped structure with an open top, and the driving unit is embedded in the cup-shaped structure; the cup-shaped structure of the support is provided with a sleeve joint part which extends in a cylindrical shape on the outer wall, and the sounding cavity of the sounding unit is inserted in the sleeve joint part through a rear cavity.

3. The totally enclosed solid reverse-molded wireless ear canal earphone according to claim 2, wherein: the main control module is a first circuit board constructed by a Bluetooth main control chip, a plurality of positioning holes are formed in the first circuit board, a plurality of positioning columns which correspond to the positioning holes one by one are formed on the periphery of an opening of the cup-shaped structure, and the positioning columns are inserted into the corresponding positioning holes; the power supply module is a lithium ion battery embedded in the cup-shaped structure; the charging module is embedded in a second circuit board at the bottom of the cup-shaped structure, and a pair of columnar electrodes extending out of the bottom of the cup-shaped structure is arranged on the second circuit board; after the body is formed, the tail end of the columnar electrode is exposed on the surface of the body.

4. A totally enclosed solid reverse-molded wireless ear canal earphone according to claim 3, wherein: the microphone is arranged on the first circuit board as a main control module and is provided with a sound collecting hole facing the surface of the body; after the body is formed, the transparent solid structure body of the body covers the microphone, and a conduit for conducting the sound collecting hole to the outside is formed in the transparent solid structure body.

5. The totally enclosed solid reverse-molded wireless ear canal earphone according to claim 2, wherein: the bottom of the cup-shaped structure is embedded with a magnetic piece.

6. The totally enclosed solid reverse-molded wireless ear canal earphone according to claim 2, wherein: the sleeve joint part is formed with a hollow part for the signal wire of the moving coil module to penetrate out; after the body is formed, the hollow part is blocked by the transparent solid structure body of the body.

7. The totally enclosed solid reverse-molded wireless ear canal earphone according to claim 2, wherein: the cup joint part is adjacent to one end of the cup-shaped structure, annular steps which are coaxially arranged are formed on the inner wall of the cup joint part, the hollow part corresponds to the hole-shaped structure between the annular steps, and the rear end face of the rear cavity of the sounding cavity is abutted against the annular steps.

8. The front cavity respiratory sound generating unit for ear canal headphones as claimed in claim 1, wherein: the air-permeable material adopted by the dome comprises but is not limited to silk cloth and tuning paper.

9. The manufacturing method of the totally-enclosed solid reverse-mold wireless ear canal type earphone is characterized by comprising the following steps of:

s1, adopting a support, respectively assembling and binding a driving unit and a sound generating unit which are arranged in the earphone in the support, and constructing electrical connection of the driving unit and the sound generating unit;

s2, placing the support bound with the driving unit and the sound generating unit into a mold, and pouring resin into the mold to submerge the support, the driving unit and the sound generating unit;

s3, curing resin to form a transparent solid structure body in which a support, a driving unit and a sound generating unit are packaged;

s4, demolding to obtain the finished product.

10. The method of manufacturing a fully closed solid reverse-molded wireless in-the-canal earphone according to claim 9, wherein the resin used in step S2 is a UV light curable resin, and the mold is placed in a UV light environment to cure the resin in step S3.

Technical Field

The invention relates to the technical field of electroacoustic, in particular to a totally-enclosed solid reverse-mold wireless auditory canal type earphone and a manufacturing method thereof.

Background

The ear canal type earphone is also called an in-ear type earphone, an in-ear type earplug and an in-ear type monitor, and is an earphone used in the auditory organs of a human body. Most of auditory canal earphones in the prior art are shown in fig. 1, and a soft rubber plug 10' inserted into an auditory canal is configured on the basis of a common earphone so as to obtain better auditory canal tightness and greatly increase the performance effect of the earphones.

In the prior art, most of sound generating units of the ear canal type earphone are as shown in fig. 2, a moving coil module or a moving iron module 3 ' is arranged in a sound generating cavity 2 ', and air is pushed to generate sound in the sound generating cavity through the moving coil module and/or the moving iron module 3 '.

To ensure the sound effect, it should be ensured that a sufficient amount of air is pushed inside the sound-generating chamber 2'. Therefore, most of the ear canal earphones in the prior art are as shown in fig. 1, an air passage 11 'communicated with the outside is arranged on a shell 1' of the earphone, and an air hole 220 'communicated with the air passage 11' is arranged in a back cavity 22 'of a sounding cavity 2' as shown in fig. 2. When the moving coil module or the moving iron module 3 ' pushes air in the sounding cavity 2 ', the back cavity 22 ' will keep dynamic balance with the external air pressure through the air hole 220 ' and the air passage 11 '. Meanwhile, the signal line 31 'of the moving coil module or the moving iron module 3' can also pass through the air hole 220 'from the sounding cavity 2' to the inside of the shell 1 'of the earphone to be connected with the driving unit 4'.

It is clear that the air pressure in the air vent 220 'and air passage 11' is dynamically balanced with the ambient air pressure, thereby ensuring that a sufficient amount of air is pushed through the sound-generating chamber 2 ', at the expense of the earphone losing the hermeticity of the housing 1'.

In addition, the applicant has found in practice that, in the case of the ear canal type earphone in which the moving coil module is disposed in the sound emission unit, the moving coil module forms a structure in which the sound emission cavity is isolated from the front and rear cavities. When the earphone is worn in the ear, the air in the inner space of the auditory canal is squeezed to increase the air pressure of the front cavity of the sounding cavity. The increase of the air pressure of the front cavity can lead the vibrating diaphragm of the moving coil module to generate a certain degree of concave deformation to the rear cavity of the sounding cavity, so that the air pushing efficiency of the rear cavity of the sounding cavity is weakened, and the sound quality of the earphone can not reach the expected level. When the left and right ears are worn at the same time, the difference of the air pressure increase of the front cavities of the left and right ears can also cause the left and right ears to generate obviously unbalanced sound effect output. More seriously, the increased pressure in the front chamber can cause damage to the ear of the user, since the internal space of the ear canal is enclosed by the earpiece.

Disclosure of Invention

The invention aims to make up the defects of the prior art and provides a totally-enclosed solid reverse-mold wireless auditory canal type earphone.

The totally-enclosed solid reverse-mode wireless ear canal type earphone is provided with a body, a driving unit and a sound production unit are arranged in the body, the sound production unit comprises a sound production cavity and a moving coil module arranged in the sound production cavity, the moving coil module is provided with a signal line connected to the driving unit, the sound production cavity is divided into a front cavity with the front end extending out of the body and a rear cavity positioned in the body by taking the moving coil module as a boundary, and the front end of the front cavity is sleeved with a soft rubber plug;

providing a support, and respectively assembling and binding a driving unit and a sound production unit in the support;

the body is a transparent solid structure body which is formed by using a support bound with a driving unit and a sounding unit as a framework and adopting resin reverse mould curing, and the support, the driving unit and the sounding unit are encapsulated by the transparent solid structure body of the body;

the driving unit is provided with a main control module, a power supply module and a charging module, the charging module charges the power supply module in a mode of coupling an external power supply, the power supply module supplies power to the Bluetooth main control module, and the main control module acquires audio signals from external sound source equipment in a wireless communication mode;

the front cavity and the rear cavity of the sounding cavity are respectively and independently formed structural bodies, the front cavity is of a tubular structure, the rear cavity is of a cylindrical structure with a closed rear end, the moving coil module is coaxially arranged at the rear end of the front cavity, and the rear end of the front cavity is coaxially butted with the front end of the rear cavity; the rear cavity is provided with a through hole on the rear end wall, and a signal wire of the moving coil module penetrates out of the sounding cavity from the through hole;

the vibrating diaphragm of the moving coil module is provided with a dome made of a breathable material at the central part, and the dome is a breathing interface for air pressure balance constructed by a front cavity and a rear cavity of the sounding cavity.

In the technical scheme, the system takes the support bound with the driving unit and the sound generating unit as a framework, adopts a transparent solid structure body formed by resin reverse mould solidification, realizes the packaging with excellent sealing performance on the support, the driving unit and the sound generating unit, and greatly enhances the waterproof and anti-falling performance. And the inside bracket, the driving unit and the sound generating unit can be directly seen in a perspective mode from the outside. In addition, for the sound generating unit, the rigidity of the sound generating unit is obviously enhanced through the support of the support and the solid structure encapsulation of the body, and better sound quality performance is obtained.

In the technical scheme, in view of the body realizing excellent sealing performance for the internal support, the driving unit and the sound generating unit, the sound generating cavity in the sound generating unit can not obtain the support of air pressure balance from the outside of the earphone any more, but a front cavity and a back cavity of the sound generating cavity are constructed to form a breathing interface with air pressure balance through the vibrating diaphragm of the moving coil module, and the breathing interface is used for realizing the breathing type conduction of controllable inlet and outlet volume in unit time between the front cavity and the back cavity of the sound generating cavity. Consequently, when the earphone goes into the ear and wears, the air of duct inner space receives the extrusion to cause the ante-chamber atmospheric pressure of sound production cavity to increase, this kind of situation will be alleviated and eliminated through the respiratory interface that the moving coil module found, the risk of damage user's ear has not only been reduced, can also ensure that the ante-chamber atmospheric pressure and the back chamber atmospheric pressure of sound production cavity can tend to unanimity, the better air promotion efficiency who has ensured the back chamber of sound production cavity, the effectual sound quality of earphone that has stabilized, and on a left side, the elimination that can also show when the auris dextra wears simultaneously is left, the audio difference of auris dextra.

The invention also aims to provide a method for manufacturing the totally-enclosed solid reverse-mold wireless in-ear-canal earphone, which adopts the technical scheme as follows.

The method for manufacturing the totally-enclosed solid reverse-mold wireless ear canal type earphone adopts the following steps:

s1, adopting a support, respectively assembling and binding a driving unit and a sound generating unit which are arranged in the earphone in the support, and constructing electrical connection of the driving unit and the sound generating unit;

s2, placing the support bound with the driving unit and the sound generating unit into a mold, and pouring resin into the mold to submerge the support, the driving unit and the sound generating unit;

s3, curing resin to form a transparent solid structure body in which a support, a driving unit and a sound generating unit are packaged;

s4, demolding to obtain the finished product.

Compared with the prior art, the invention has the beneficial effects that:

(1) the totally-enclosed integrated earphone structure is realized, and the sealing protection of internal devices is obviously improved;

(2) the rigidity of the sounding unit is obviously enhanced, and better tone quality expression is facilitated;

(3) the sound production unit does not need to obtain the support of air pressure balance from the outside of the earphone, and provides breathing type air pressure balance for the ear canal, the front cavity and the rear cavity through the breathing interface constructed by the sound production unit, so that the risk of damaging the ears of a user is reduced, and the air pushing efficiency of the rear cavity of the sound production cavity is guaranteed.

The invention is further described with reference to the drawings and the detailed description.

Drawings

Fig. 1 is a schematic structural diagram of an in-canal earphone in the prior art.

Fig. 2 is a schematic structural diagram of a sound generating unit of an in-canal earphone according to the prior art.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is an assembly view of the stent of the present invention.

Fig. 5 is a schematic structural view of the stent of the present invention.

Fig. 6 is a schematic cross-sectional view of a stent according to the present invention.

Fig. 7 is a schematic view of the structure of the driving unit in the present invention.

Fig. 8 is a schematic structural view of a sound emitting unit in the present invention.

Fig. 9 is an exploded view of the sound unit of the present invention.

Fig. 10 is a schematic structural view of the moving coil unit of the present invention.

Fig. 11 is a schematic diagram of the operation principle of the sound generating unit in the present invention.

Detailed Description

As shown in fig. 3 to 11, the totally-enclosed solid reverse-mode wireless ear canal earphone comprises a body 1, a driving unit 2 and a sound generating unit 3 are arranged in the body 1, the sound generating unit 3 comprises a sound generating cavity 31 and a moving coil module 32 arranged in the sound generating cavity 31, the moving coil module 32 is provided with a signal line 321 connected to the driving unit 2, the sound generating cavity 31 is divided into a front cavity 311 with the front end extending out of the body 1 and a rear cavity 312 arranged in the body 1 by taking the moving coil module 32 as a boundary, and the front end of the front cavity 311 is sleeved with a soft rubber plug 4;

providing a bracket 5, as shown in fig. 3 and 4, wherein the driving unit 2 and the sound generating unit 3 are respectively assembled in the bracket 5 to be bound;

as shown in fig. 3 and 4, the main body 1 is a transparent solid structure body which is formed by using a support 5 bound with the driving unit 2 and the sound generating unit 3 as a framework and adopting resin to perform reverse mold curing, and the support 5, the driving unit 2 and the sound generating unit 3 are encapsulated by the transparent solid structure body of the main body 1;

as shown in fig. 7, the driving unit 2 is configured with a main control module 21, a power supply module 22, and a charging module 23, the charging module 23 charges the power supply module 22 by coupling with an external power source, the power supply module 22 supplies power to the bluetooth main control module 21, and the main control module 21 obtains an audio signal from an external sound source device by wireless communication;

as shown in fig. 8 and 9, the front cavity 311 and the rear cavity 312 of the sounding cavity 31 are respectively and independently formed structures, the front cavity 311 is a tubular structure, the rear cavity 312 is a cylindrical structure with a closed rear end, the moving coil module 32 is coaxially installed in the rear end of the front cavity 311, and the rear end of the front cavity 311 is coaxially butted with the front end of the rear cavity 312; wherein, the rear cavity 312 is provided with a through hole 3121 on the rear end wall, and the signal wire 321 of the moving coil module 32 penetrates out of the sounding cavity 31 from the through hole 3121;

as shown in fig. 8, 10 and 11, the diaphragm of the moving coil module 32 is provided with a dome 322 made of a breathable material at the central portion, and the dome 322 is a breathing interface for air pressure balance between the front cavity 311 and the rear cavity 312 of the sound-generating cavity 31.

In the above embodiment, the body 1 is a transparent solid structure body formed by using the bracket 5 bound with the driving unit 2 and the sound generating unit 3 as a framework and by adopting resin to perform inverse mold curing, and the bracket 5, the driving unit 2 and the sound generating unit 3 are packaged with excellent sealing performance, so that the waterproof and anti-falling performance is greatly enhanced. The inside holder 5, the driving unit 2, and the sound emitting unit 3 can be seen directly from the outside through the perspective. In addition, as for the sound generating unit 3, the rigidity is obviously enhanced through the support of the bracket 5 and the solid structure encapsulation of the body 1, which is helpful for obtaining better sound quality performance.

In the above embodiment, in view of the fact that the body 1 realizes excellent sealing performance for the internal support 5, the driving unit 2, and the sounding unit 3, the sounding cavity 31 in the sounding unit 3 will not obtain the support of air pressure balance from the outside of the earphone, but a breathing interface with air pressure balance is established for the front cavity 311 and the rear cavity 312 of the sounding cavity 31 by the diaphragm of the moving coil module 32, and a breathing type conduction with controllable inlet and outlet amount in a unit time is formed between the front cavity 311 and the rear cavity 312 of the sounding cavity 31 through the breathing interface. Therefore, when the earphone is worn in the ear, the air in the inner space of the ear canal is squeezed to increase the air pressure of the front cavity 311 of the sounding cavity 31, the breathing interface constructed by the moving coil module 32 is relieved and eliminated, the risk of damaging the ear of the user is reduced, the air pressure of the front cavity 311 and the air pressure of the rear cavity 312 of the sounding cavity 31 can be ensured to be consistent, the air pushing efficiency of the rear cavity 312 of the sounding cavity 31 is better ensured, the sound quality of the earphone is effectively stabilized, and when the earphone is worn on the left side and the right side, the sound effect difference of the left and the right side can be obviously eliminated.

In a preferred embodiment, as shown in fig. 4 to 6, the support 5 has a cup-shaped structure 51 with an open top, and the drive unit 2 is embedded in the cup-shaped structure 51; the cup-shaped structure 51 of the bracket 5 is formed with a sleeve-shaped extension 52 on the outer wall, and the sounding cavity 31 of the sounding unit 3 is inserted into the sleeve-shaped extension 52 with the rear cavity 312.

In a preferred embodiment, as shown in fig. 7, the main control module 21 is a first circuit board constructed by a bluetooth main control chip, the first circuit board is provided with a plurality of positioning holes 211, the opening periphery of the cup-shaped structure 51 is formed with a plurality of positioning pillars 511 corresponding to the positioning holes 211 one by one, and the positioning pillars 511 are inserted into the corresponding positioning holes 211; the power supply module 22 is a lithium ion battery embedded in the cup-shaped structure 51; the charging module 23 is embedded in the second circuit board at the bottom of the cup-shaped structure 51, and the second circuit board is provided with a pair of columnar electrodes 231 extending out of the bottom of the cup-shaped structure 51; as shown in fig. 4, after the body 1 is formed, the end of the pillar-shaped electrode 231 is exposed on the surface of the body 1.

In a preferred embodiment, as shown in fig. 7, a microphone 212 is disposed on the first circuit board as the main control module 21, the microphone 212 has a sound collecting hole 2121 facing the surface of the main body 1; as shown in fig. 4, after the body 1 is formed, the transparent solid structure of the body 1 covers the microphone 212, and a duct 11 for guiding the sound collecting hole 2121 to the outside is formed in the transparent solid structure. The guide tube 11 can be formed by embedding the insertion pin in a reverse mold link, and after the reverse mold is finished, the insertion pin is pulled out. The microphone 212 provides hardware support for voice acquisition and/or environmental noise reduction for the closed solid reverse-mode wireless ear-canal earpiece of the present invention.

In the preferred embodiment, as shown in fig. 4 and 5, the bottom of the cup-shaped structure 51 is embedded with a magnetic member 53. This arrangement is in a compatible design for the magnetically-attractable charging bin.

In a preferred embodiment, as shown in fig. 5 and 6, a hollow portion 521 for the signal line 321 of the moving coil module 32 to pass through is formed on the socket portion 52; after the body 1 is molded, the hollow portion 521 is closed by the transparent solid structure of the body 1.

In a preferred embodiment, as shown in fig. 6, the end of the socket 52 adjacent to the cup-shaped structure 51 is formed with coaxially disposed annular steps 522 on the inner wall, the hollow 521 corresponds to the hole-like structure between the annular steps 522, and the rear end surface of the rear cavity 312 of the sound-generating cavity 31 abuts on the annular steps 522. In this arrangement, the socket 52 forms an expansion space continuing to the rear end of the rear chamber 312 within the height range of the annular step 522, so as to facilitate the arrangement of the signal line 321 and expand the air volume of the rear chamber 312.

Optionally, the air-permeable material used for the dome 322 includes, but is not limited to, silk cloth and tuning paper.

In order to obtain the wireless auditory canal type earphone of the totally-enclosed solid reverse mould, the invention provides a method for manufacturing the wireless auditory canal type earphone of the totally-enclosed solid reverse mould, which comprises the following steps:

s1 — as shown in fig. 5, a support 5 is adopted, the driving unit 2 and the sound generating unit 3 inside the earphone are respectively assembled in the support 5 to be bound, and the electrical connection between the driving unit 2 and the sound generating unit 3 is established;

s2, placing the support 5 bound with the driving unit 2 and the sound generating unit 3 into a mold, and pouring resin into the mold to submerge the support 5, the driving unit 2 and the sound generating unit 3;

s3, curing the resin to form a transparent solid structure body in which the bracket 5, the driving unit 2 and the sound generating unit 3 are packaged;

s4, demolding to obtain the finished product.

In a preferred embodiment, the resin used in step S2 is a UV light curable resin, and the mold is placed in a UV light environment in step S3 to cure the resin.

Various other modifications and alterations of the disclosed structure and principles of the invention will become apparent to those skilled in the art from this disclosure, and all such modifications and alterations are intended to be within the scope of the invention.