CN214799845U

CN214799845U - Active self-adaptation ANC earphone intelligence feedback falls into ear module of making an uproar

Info

Publication number: CN214799845U
Application number: CN202121199472.6U
Authority: CN
Inventors: 贾德双; 赵耘
Original assignee: Shenzhen Boomtech Industrial Co ltd
Current assignee: Shenzhen Boomtech Industrial Co ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2021-11-19
Anticipated expiration: 2031-05-31

Abstract

The utility model belongs to the technical field of the earphone technique of making an uproar falls and specifically relates to an active self-adaptation ANC earphone intelligence feedback is fallen and fall into ear module, including the mould shell that has the sound conduction passageway, place the sample microphone of mould shell one side in and set up in the speaker of mould shell, the mould shell outer wall is provided with the identification portion of sign sample microphone position, and the mould shell outer wall is provided with identification portion, and the staff of being convenient for knows the position of sample microphone more directly perceivedly to reduce and produce the possibility of the anti-phenomenon of dress when assembling earphone casing and the module of making an uproar fall, effectively improve the assembly efficiency to the earphone of making an uproar of falling the initiative. The method and the device have the advantage of effectively improving the assembling efficiency of the active noise reduction earphone.

Description

Active self-adaptation ANC earphone intelligence feedback falls into ear module of making an uproar

Technical Field

The application relates to the technical field of noise reduction earphones, in particular to an active self-adaptive ANC earphone intelligent feedback noise reduction earphone module which is suitable for an in-ear noise reduction earphone.

Background

The noise reduction earphone is an earphone which reduces noise by using a certain method. At present, two noise reduction earphones are respectively: active noise reduction headphones and passive noise reduction headphones. The active noise reduction function is to generate reverse sound waves equal to external noise through a noise reduction system to neutralize the noise, so that the noise reduction effect is realized; the passive noise reduction earphone mainly forms a closed space by surrounding ears, or adopts sound insulation materials such as silica gel earplugs and the like to block outside noise.

The active noise reduction earphone in the related art generally comprises an earphone front shell, an earphone rear shell assembled on the earphone front shell, and a microphone and a loudspeaker assembled between the earphone front shell and the earphone rear shell, wherein a key part noise reduction module realized in the active noise reduction earphone is formed by the microphone and the loudspeaker. With the improvement and maturity of earphone production technology, people begin to process microphone and speaker as the module of making an uproar that falls alone, and the module of making an uproar that will fall after will assembling is whole to be assembled between earphone procapsid and earphone rear housing, because the earphone has the left and right branch, in order to improve the uniformity of controlling the earphone, consequently need guarantee to mate the installation state of the module of making an uproar that falls in controlling the earphone unanimously, to the correlation technique among the above-mentioned, the inventor thinks there is the following defect: the shape that current earphone goes out the sound pipe is cylindrical or oval usually, therefore the appearance of making an uproar module of falling also is cylindrical or oval usually, in the assembling process, the staff hardly directly judges the position of falling the interior sample microphone of the module of making an uproar according to the appearance of making an uproar module of falling, the position that the microphone was got to the sample in the different earphones appears easily is inequality and leads to controlling the uniformity of earphone poor, the phenomenon such as doing over again appears in later stage testing process, lead to assembly efficiency lower.

SUMMERY OF THE UTILITY MODEL

In order to improve the assembly efficiency to the earphone of making an uproar falls in the initiative, this application provides an active self-adaptation ANC earphone intelligence feedback falls into ear module of making an uproar.

The application provides a pair of active self-adaptation ANC earphone intelligence feedback falls into ear module and adopts following technical scheme:

the utility model provides an active self-adaptation ANC earphone intelligence feedback is fallen and is fallen into ear module of making an uproar, places the sample microphone of mould shell one side in including the mould shell that has the sound channel of leading, and sets up in the speaker of mould shell, the mould shell outer wall is provided with the sign portion of sign sample microphone position.

Through adopting above-mentioned technical scheme, the mould shell outer wall is provided with identification portion, and the staff of being convenient for knows the position of sample microphone more directly perceivedly to reduce and produce the possibility of the anti-phenomenon of dress when making an assembly to the earphone casing and making an uproar module fall, guarantee to fall the acoustics uniformity of earphone of making an uproar, effectively improve the assembly efficiency to the earphone of making an uproar of falling initiatively.

Preferably, the mould shell includes the die sleeve, respectively fixed connection in the play sound pipe and the installation pipe at the both ends of die sleeve, the inner chamber of installation pipe, die sleeve and play sound pipe communicates each other, the sign portion is the sign block of fixed connection in the outer wall of installation pipe, place in the sample microphone and go out sound pipe one side, sign block and sample microphone are located same one side of mould shell.

Through adopting above-mentioned technical scheme, the identification block is located same one side of mould shell with the sample microphone, and the staff of being convenient for knows the position of sample microphone more directly perceivedly, in addition, will fall the module of making an uproar and assemble in earphone shell in-process, and identification block and earphone shell joint prevent to fall the module of making an uproar and earphone shell and take place to rotate, further satisfy the mounted position required precision of sample microphone.

Preferably, the inner side wall of the installation pipe is provided with a supporting block, the supporting block is provided with a plurality of supporting blocks which are distributed around the axis of the installation pipe, the loudspeaker is provided with a sound emitting surface and a back surface, and the sound emitting surface of the loudspeaker is abutted to the supporting block.

Through adopting above-mentioned technical scheme, be provided with the butt joint piece and provide the support carrier for the speaker, reduce the play sound face of speaker and the contact surface of mould shell inner wall to guarantee the play sound effect and the sound quality volume of speaker.

Preferably, the end face of the mounting tube is coaxially and fixedly connected with a sealing sleeve, a limiting convex edge is arranged on a protruding ring of the end face, far away from the mounting tube, of the sealing sleeve, and the inner wall of the limiting convex edge abuts against the back face of the loudspeaker.

Through adopting above-mentioned technical scheme, the seal cover is installed behind the installation pipe, and spacing protruding along the inner wall butt in the back of speaker to effectively reduce the speaker and take place the possibility of rocking, reduce the noise that produces because of rocking.

Preferably, the contact surface of the limiting convex edge and the loudspeaker is filled with sealing glue.

Through adopting above-mentioned technical scheme, be provided with sealing glue, improve the leakproofness between spacing protruding edge and the speaker back, improve the syllable-dividing effect of seal cover, the sound that the speaker takes place will be separated by the seal cover to establish comparatively sealed acoustics front chamber and acoustics rear chamber, the adaptation restores to fall the requirement of leakproofness between the procapsid and the back casing of making an uproar earphone, when the module of making an uproar falls the performance of making an uproar and detects, improve the accuracy of the result of detecting the performance of making an uproar.

Preferably, the sampling microphone is arranged in a cuboid, and the length direction of the sampling microphone is parallel to the axis direction of the sound outlet pipe.

Through adopting above-mentioned technical scheme, the length direction of sample microphone is on a parallel with the axis direction setting of play sound pipe, reduces the sound that sends of speaker and the possibility that the sample microphone took place to interfere, and then reduces the sound wave of speaker and takes place the possibility of going out the sound again after the refraction, guarantees that human duct can accept higher sound pressure level and great volume.

Preferably, go out the one end inside wall fixedly connected with bottom plate that the sound pipe kept away from the installation pipe, go out the fixedly connected with baffle of sound pipe inside wall, baffle fixed connection is in the bottom plate, and baffle, bottom plate and play sound pipe inner wall form the installation cavity that supplies the installation sample microphone, and the first sound groove that goes out that feeds through in leading the sound passageway is seted up to the baffle, and the second sound groove that goes out has been seted up in the bottom plate run through.

Through adopting above-mentioned technical scheme, place the sample microphone in the installation intracavity, and be provided with first play sound groove and second play sound groove, can make a plurality of pickup planes of sample microphone can both expose at the sound conduction passageway, when making the noise in the human ear enter into to the sound conduction passageway, the sample microphone can gather the sound wave through first play sound groove and second play sound groove, the constitution of the noise wave in the ear is gone out in the analysis that can be better, the effect of making an uproar is reduced.

Preferably, the end face of the sound outlet pipe, which is far away from the mounting pipe, is coaxially provided with a mounting groove, and the mounting groove is provided with a first tuning net.

Through adopting above-mentioned technical scheme, the play sound end that goes out the sound pipe is provided with first tuning net for on the one hand, sound through going out the sound pipe is fuller penetrating, and on the other hand reduces the possibility that impurities such as dust or ear wax got into in the mould shell through going out the sound mouth, and then influences the noise reduction effect of the module of making an uproar and the play sound effect of speaker.

Preferably, the outer wall of the sound outlet pipe is provided with a sound adjusting hole communicated with the sound guide channel along the radial direction, and the sound outlet pipe is provided with a second sound adjusting net covering the sound adjusting hole.

Through adopting above-mentioned technical scheme, when the speaker sound production, go out the sound through the tuning hole and change the acoustics curve through second tuning net, improve the play sound effect of earphone.

To sum up, the utility model discloses following beneficial effect has:

1. the outer wall of the mould shell is provided with the identification part, so that a worker can know the position of the sampling microphone more intuitively, the possibility of the anti-assembly phenomenon generated when the earphone shell and the noise reduction module are assembled is reduced, and the assembly efficiency of the active noise reduction earphone is effectively improved;

2. the length direction of sample microphone is on a parallel with the axis direction setting of play sound pipe, reduces the sound that sends of speaker and the possibility that sample microphone took place to interfere, and then reduces the sound wave of speaker and takes place the possibility of going out sound after the refraction again, guarantees that human duct can accept higher sound pressure level and great volume.

Drawings

Fig. 1 is a schematic overall structure diagram of an active adaptive ANC headphone intelligent feedback noise reduction in-ear module in embodiment 1;

FIG. 2 is a schematic view showing the internal structure of the sound outlet pipe and the installation pipe in embodiment 1;

fig. 3 is a schematic view of a sound outlet structure of the sound outlet tube in embodiment 1;

FIG. 4 is a schematic view showing the structure of an ear cap in embodiment 1;

fig. 5 is a schematic overall structure diagram of an active adaptive ANC headphone intelligent feedback noise reduction in-ear module in embodiment 2;

fig. 6 is a schematic view of the internal structure of the sound outlet tube and the installation tube in embodiment 2.

In the figure, 1, a formwork; 11. die sleeve; 12. installing a pipe; 121. an identification block; 122. a support block; 13. a sound outlet pipe; 131. a base plate; 132. a baffle plate; 133. a second sound outlet groove; 134. a first sound outlet groove; 135. a first tuning net; 136. a tone tuning hole; 137. a second tuning net; 138. a limiting clamping groove; 2. a sampling microphone; 21. a second connecting band; 3. a speaker; 31. a first connecting belt; 4. sealing sleeves; 41. a limiting convex edge; 5. an ear cap; 51. inserting holes; 52. a snap ring; 6. a flexible circuit board.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses an active self-adaptation ANC earphone intelligence feedback falls into ear module of making an uproar.

Example 1: the utility model provides an active self-adaptation ANC earphone intelligence feedback is fallen and is fallen into ear module of making an uproar, refers to fig. 1, fig. 2, including the mould shell 1 that has the sound conduction passageway, place the sample microphone 2 of 1 one side of mould shell in and set up in the speaker 3 of mould shell 1, sample microphone 2 is the cuboid setting, and sample microphone 2 has a plurality of pickup faces, and speaker 3 has sound face and the back.

Referring to fig. 1 and 2, the formwork 1 includes a mold sleeve 11, a sound outlet pipe 13 and a mounting pipe 12 respectively fixedly connected to two ends of the mold sleeve 11, a speaker 3 is disposed in the mounting pipe 12, a sound outlet surface of the speaker 3 is disposed toward one end of the sound outlet pipe 13, a sampling microphone 2 is disposed in the sound outlet pipe 13, and inner cavities of the mounting pipe 12, the mold sleeve 11 and the sound outlet pipe 13 are communicated with each other to form a sound guide channel. The sound outlet pipe 13 is arranged in an oval shape, so that the appearance of the sound outlet pipe 13 is closer to the outline of the auditory canal of a human body, and the experience of a user during use is enhanced. The outer wall of the formwork 1 is provided with an identification part for identifying the position of the sampling microphone 2, the identification part is an identification block 121 fixedly connected to the outer wall of the installation pipe 12, the identification block 121 and the sampling microphone 2 are located on the same side of the formwork 1, and a worker can know the position of the sampling microphone more intuitively, so that the situation of reverse assembly when the earphone shell and the noise reduction module are assembled is reduced.

Referring to fig. 1 and 2, the inner side wall of the mounting tube 12 is provided with a plurality of supporting blocks 122, and the supporting blocks 122 are distributed around the axis of the mounting tube 12, in this embodiment, three supporting blocks 122 are provided. The speaker 3 is disposed in the mounting pipe 12, and the sound emitting surface of the speaker 3 abuts against the upper end surface of the supporting block 122. The inner diameter of the mounting tube 12 is slightly larger than the outer diameter of the speaker 3, and the gap between the mounting tube 12 and the speaker 3 is filled with sealing glue to fix the speaker 3.

Referring to fig. 2 and 3, a bottom plate 131 is fixedly connected to an inner side wall of one end of the sound outlet pipe 13 far away from the installation pipe 12, the bottom plate 131 is disposed at one end of the sound outlet pipe 13 along a long axis thereof, a baffle 132 is fixedly connected to the inner side wall of the sound outlet pipe 13, the baffle 132 is fixedly connected to the bottom plate 131, and the baffle 132 is disposed in parallel with a short axis of the sound outlet pipe 13; the baffle 132, the bottom plate 131 and the inner wall of the sound outlet pipe 13 form a mounting chamber for mounting the sampling microphone 2. The sampling microphone 2 is assembled in the installation cavity in a sliding manner and is fixed in the installation cavity through glue, and the length direction of the sampling microphone 2 is parallel to the axial direction of the sound outlet pipe 13. The baffle 132 has a first sound outlet groove 134 communicating with the sound guide channel, and the bottom plate 131 has a second sound outlet groove 133.

Referring to fig. 2 and 4, in order to improve the sound quality of the earphone, a mounting groove is coaxially formed in the end surface of the sound outlet pipe 13, which is far away from the mounting pipe 12, and a first tuning net 135 is fixed in the mounting groove through glue. The outer wall of the sound outlet pipe 13 is provided with a tuning hole 136 communicated with the sound guide channel along the radial direction, and the side wall of the sound outlet pipe 13 is fixed with a second tuning net 137 covered on the tuning hole 136 through glue. Go out the sound pipe 13 and keep away from the tip joint of installation pipe 12 and have the ear cap 5 of stopper in human duct, go out the periphery wall of sound pipe 13 and encircle and seted up spacing draw-in groove 138, ear cap 5 is made for the silica gel material, and ear cap 5 has the spliced eye 51 that supplies sound pipe 13 to insert and establish, and the inner wall protrusion of spliced eye 51 is provided with the snap ring 52 of inlay card in spacing draw-in groove 138.

Referring to fig. 1, fig. 2, electric connection has FPC flexible circuit board 6 between speaker 3 and the sample microphone 2, FPC flexible circuit board 6's one end is equipped with the first connecting band 31 that is used for connecting speaker 3 and is used for connecting sample microphone 2's second connecting band 21, FPC flexible circuit board 6's the other end is equipped with the FPC plug, the FPC plug stretches out the installation pipe 12 outside and is used for connecting the main control circuit board that is located the earphone rear housing, in the module acoustic test process of making an uproar falls, it can be connected to testing arrangement's PCBA mainboard through the FPC plug fast to fall the module of making an uproar.

The implementation principle of the active self-adaptive ANC earphone intelligent feedback noise reduction in-ear module in the embodiment of the application is as follows: the identification block 121 and the sampling microphone 2 are located on the same side of the mold shell 1, so that a worker can know the position of the sampling microphone 2 more intuitively, and in addition, the noise reduction module is assembled in the earphone shell in-process, the identification block 121 and the earphone shell are clamped to prevent the noise reduction module from rotating with the earphone shell, and the precision requirement of the installation position of the sampling microphone 2 is further met.

The process flow of the active noise reduction earphone comprises the following steps: earlier assemble the module of making an uproar of falling, beat the fixed equipment of gluing again, test the acoustics uniformity of sample microphone 2 and speaker 3 to the module of making an uproar of falling after the assembly is accomplished after then, detect qualified back, will fall the module assembly of making an uproar in the earphone casing, and fall the module finished product of making an uproar and pass through the FPC plug can be quick be connected to and set up in the PCBA mainboard in the earphone casing, initiatively fall the earphone of making an uproar and assemble the back and carry out the acoustics test once more. The advantages are that: firstly, the assembly efficiency of the active noise reduction earphone is effectively improved, the acoustic consistency of the sampling microphone 2 and the loudspeaker 3 is improved, and the acoustic consistency of the finished active noise reduction earphone is obviously improved by over 10 percent; secondly, two procedures of testing components in the finished product of the active noise reduction earphone and assembling and testing the noise reduction module by a finished product manufacturer are reduced; and thirdly, the strength of the assembly process of the noise reduction module and the earphone shell is reduced.

Example 2: different from embodiment 1, refer to fig. 5, fig. 6, 3 outside covers of speaker are equipped with seal cover 4, seal cover 4 contradicts with installation pipe 12, a clearance for filling between speaker 3 and installation pipe 12, after speaker 3 fills in installation pipe 12, seal cover 4 covers and establishes 4 outer walls of speaker and slides to installation pipe 12 one end and make seal cover 4 contradict with installation pipe 12 terminal surface, simultaneously through all filling sealing glue on the lateral wall at seal cover 4 and installation pipe 12 contact terminal surface, seal cover 4 and the contact of speaker 3, make installation pipe 12 one end be encapsulated situation. The protruding ring of the end part peripheral wall of the sealing sleeve 4 far away from the mounting tube 12 is provided with a limiting convex edge 41 which is abutted against the back surface of the loudspeaker 3, thereby effectively reducing the possibility of shaking of the loudspeaker 3 and reducing noise generated by shaking.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an active self-adaptation ANC earphone intelligence feedback falls into ear module of making an uproar which characterized in that: the loudspeaker comprises a formwork (1) with a sound guide channel, a sampling microphone (2) arranged on one side of the formwork (1) in a built-in mode and a loudspeaker (3) arranged on the formwork (1), wherein an identification part for identifying the position of the sampling microphone (2) is arranged on the outer wall of the formwork (1).

2. The active adaptive ANC earphone intelligent feedback noise reduction in-ear module of claim 1, characterized in that: the utility model discloses a mould shell (1) is including mould cover (11), play sound pipe (13) and installation pipe (12) of fixed connection in the both ends of mould cover (11) respectively, the inner chamber of installation pipe (12), mould cover (11) and play sound pipe (13) communicates each other and forms the sound channel, identification portion is identification block (121) of fixed connection in the outer wall of installation pipe (12), place in play sound pipe (13) one side in sampling microphone (2), identification block (121) and sampling microphone (2) are located the same one side of mould shell (1).

3. The active adaptive ANC earphone smart feedback noise reduction in-ear module of claim 2, wherein: the inner side wall of the installation pipe (12) is provided with a supporting block (122), the supporting block (122) is provided with a plurality of supporting blocks and distributed around the axis of the installation pipe (12), the loudspeaker (3) is provided with a sound emitting surface and a back surface, and the sound emitting surface of the loudspeaker (3) is abutted to the supporting block (122).

4. The active adaptive ANC earphone intelligent feedback noise reduction in-ear module of claim 3, characterized in that: the end face of the mounting pipe (12) is coaxially and fixedly connected with a sealing sleeve (4), the end face of the sealing sleeve (4) far away from the mounting pipe (12) is provided with a limiting convex edge (41) in a protruding ring mode, and the inner wall of the limiting convex edge (41) abuts against the back face of the loudspeaker (3).

5. The active adaptive ANC earphone smart feedback noise reduction in-ear module of claim 4, wherein: the contact surface of the limiting convex edge (41) and the loudspeaker (3) is filled with sealing glue.

6. The active adaptive ANC earphone smart feedback noise reduction in-ear module of claim 2, wherein: the sampling microphone (2) is arranged in a cuboid mode, and the length direction of the sampling microphone (2) is parallel to the axis direction of the sound outlet pipe (13).

7. The active adaptive ANC earphone smart feedback noise reduction in-ear module of claim 6, wherein: go out sound pipe (13) and keep away from one end inside wall fixedly connected with bottom plate (131) of installation pipe (12), the inside wall fixedly connected with baffle (132) of sound pipe (13), baffle (132) fixed connection is in bottom plate (131), baffle (132), bottom plate (131) and sound pipe (13) inner wall form the installation cavity that supplies installation sample microphone (2), baffle (132) are seted up and are communicated in first sound groove (134) of leading the sound passageway, bottom plate (131) run through and have been seted up second sound groove (133).

8. The active adaptive ANC earphone smart feedback noise reduction in-ear module of claim 6, wherein: the end face, far away from the mounting pipe (12), of the sound outlet pipe (13) is coaxially provided with a mounting groove, and the mounting groove is provided with a first tuning net (135).

9. The active adaptive ANC earphone smart feedback noise reduction in-ear module of claim 6, wherein: the outer wall of the sound outlet pipe (13) is provided with a sound adjusting hole (136) communicated with the sound guide channel along the radial direction, and the sound outlet pipe (13) is provided with a second sound adjusting net (137) covered on the sound adjusting hole (136).