CN105704589A

CN105704589A - Earphone

Info

Publication number: CN105704589A
Application number: CN201410684337.9A
Authority: CN
Inventors: 赖永强
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2014-11-25
Filing date: 2014-11-25
Publication date: 2016-06-22

Abstract

The invention relates to an earphone. The earphone comprises a shell with an opening formed at the front end, and a loudspeaker which is encapsulated in the shell and divides the shell into a front sound chamber and a back sound chamber, wherein the loudspeaker is electrically connected with a cable; and the earphone also comprises a vibration module set which is arranged at the rear side of the loudspeaker and is encapsulated in the shell; the vibration module set is provided with a passive sound chamber communicated with the back sound chamber; a passive vibration diaphragm is arranged in the passive sound chamber; and the loudspeaker emits sound to drive the passive vibration diaphragm in the passive sound chamber to vibrate. According to the earphone of the invention, the passive vibration diaphragm of the vibration module set can be driven by sound waves emitted by the loudspeaker so as to emit sound, and therefore, low audio frequency in the back sound chamber can be compensated, and therefore, clear presentation of sound can be achieved.

Description

Earphone

[technical field]

Disclosure one earphone, especially discloses a kind of In-Ear Headphones with earplug。

[background technology]

Existing earpiece audio signal all includes high and low audio-frequency unit, produce high and low audio frequency sound at same diaphragm oscillations simultaneously, but it has the characteristic of different wave length and amplitude due to high and low audio frequency sound, as only cannot clearly different characteristics being separated with same vibrating diaphragm, therefore often produce high and low audio frequency intermodulation distortion and clearly representing of sound cannot be obtained, in prior art, some earphone is built into high and low sound loudspeaker to play individually high and low audio signal, but this kind of way will make earphone volume become big, and cost raises。

In view of problem above, it is necessary to improve to overcome drawbacks described above to prior art in fact。

[summary of the invention]

It is an object of the invention to provide a kind of earphone optimizing earphone low frequency audio。

For achieving the above object, the present invention adopts the following technical scheme that a kind of earphone, including front opening housing, be coated in housing and described housing be isolated into the horn single body in forward and backward sound chamber, described horn single body is electrically connected cable, described earphone also includes the vibration module being coated among housing being arranged on rear side of horn single body, described vibration module is provided with the passive sound chamber connected with described rear sound chamber, described passive sound intracavity is provided with passive vibrating diaphragm, and described horn single body sounding drives the passive diaphragm oscillations of passive sound intracavity。

Compared with prior art, the sound wave drive sounding that the passive vibrating diaphragm of the vibration module of earphone of the present invention can be sent by rear individual earphones, and then can compensate for the bass of rear sound intracavity, and then obtain clearly presenting of sound。

[accompanying drawing explanation]

Fig. 1 is the three-dimensional assembly diagram of earphone of the present invention。

Fig. 2 is the axonometric chart at another visual angle of Fig. 1

Fig. 3 is the complete exploded view of Fig. 1。

Fig. 4 is another visual angle exploded view of Fig. 3。

Fig. 5 is the enlargement decomposition vibrating module in Fig. 3。

Fig. 6 is the sectional view in A-A direction along Fig. 1。

Fig. 7 is that loudspeaker audio is affected schematic diagram by sound chamber of the present invention design。

Fig. 8 is that loudspeaker of the present invention front sound chamber superposes schematic diagram with rear sound intracavity sound wave。

Fig. 9 is the intensity of acoustic wave/frequency curve schematic diagram entering sound channel in earphone external environment condition。

[main element symbol description]

Housing	1	Horn single body	2
				Vibration module	3	Earplug	4
Tuning cloth	5	Stress Release portion	6
				Protecgulum	11	Mesochite	12
Bonnet	13	Through hole	121,63,313
				Holding division	61	Extension	62
First end	111	Second end	112
				First step portion	113	Metal shell	21
Protuberance	211	Second step portion	212
				Holding section	114	Support slot	1141
Protection lid	31	Passive vibrating diaphragm	32
				Steel mesh	33	Main part	311
Outer portion	312	Heavy burden portion	321
				Outstanding limit	322	Copper ring	323
Reticular part	331	Edge part	332
				3rd stage portion	131	Front sound chamber	10
Rear sound chamber	20	Passive sound chamber	30
				Curve	710,720,810,820,830,910,920

Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing。

[detailed description of the invention]

Refer to Fig. 1 to Fig. 4, the better embodiment of earphone 100 of the present invention includes housing 1, the horn single body 2 that is respectively arranged in housing 1 and vibration module 3, be arranged at housing 1 front end for the earplug 4 inserting in user's auricle, be arranged at the tuning cloth 5 at housing 1 front opening place and be assembled in housing 1 and for the Stress Release portion 6 of cable (sign) traverse。

Refer to Fig. 3 and Fig. 6, described housing 1 includes being positioned at the protecgulum 11 of front end, being fastened on the mesochite 12 of described protecgulum 11 rear end and be fastened on the bonnet 13 of described mesochite 12 rear end。Described protecgulum 11, mesochite 12 and bonnet 13 place of combining are respectively provided with the end difference cooperated, so that it is an entirety that described protecgulum 11, mesochite 12 and bonnet 13 fasten。Manhole 121 is offered in the bottom of described mesochite 12。Described Stress Release portion 6 arranges holding division 61 and the column extension 62 being downwardly extending from holding division 61, and through hole 63 runs through described holding division 61 and extension 62 from top to bottom。The extension 62 in described Stress Release portion 6 stretches out from the through hole 121 of described mesochite 12, and described holding division 61 block is also fastened in described mesochite 12 inwall。Cable (does not indicate) logical described through hole 121 and stretches in earphone 100 and be electrically connected with described horn single body 2。

Refer to Fig. 4 and Fig. 6, described protecgulum 11 is generally in a cylindrical shape, the second end 112 of it the first end 111 including smaller round opening and large round opening, described protecgulum 11 be internally formed first step portion 113。The front end of the metal shell 21 of described horn single body 2 arranges the protuberance 211 of circle, described protuberance 211 forms the second step portion 212 corresponding with described first step portion 113 with the outer rim of described metal shell 21, described first step portion 113 is made to coordinate with described second step portion 212 fixing, so that described horn single body 2 vertical shell 1 central axis is fixed on described protecgulum 11。The first radial direction certainly in the smaller opening edge of the first end 111 of described protecgulum 11 also extends to form forward ring-type holding section 114, forms step-like support slot 1141 to fix described tuning cloth 5 in described holding section 114。The external diameter of described holding section 114 is more than the external diameter of described first end 111, and described earplug 4 can be sheathed and be equipped in the outer peripheral face of described holding section 114。

Refer to Fig. 3 to Fig. 6, described vibration module 3 includes protection lid 31, passive vibrating diaphragm 32 and steel mesh 33。Described vibration module 3 is arranged at the rear of described housing 1。Described protection lid 31 includes the main part 311 of circle and the outer portion 312 formed that stretches out again from described main part 311 edge to a lateral buckling。Some through holes 313 are offered at the middle part of described main part 311。Described passive vibrating diaphragm 32 includes the heavy burden portion 321 being positioned at middle part, from the copper ring 323 on the outstanding limit 322 of the ring-type that cross section is half arc of the radially outwardly extending formation in edge, heavy burden portion 321 and the ring-type of the radially outwardly extending formation of outer rim from described outstanding limit 322。Described heavy burden portion 321 is used for supporting whole vibration module 3, the optional aluminium foil of the material in described heavy burden portion 321 or expanded material add the composite of metal, and then the rigidity that can increase whole vibration module 3 can be unlikely to again to cause that because material is overweight passive vibrating diaphragm 32 cannot vibrate。In the present embodiment, also by adjusting the weight in described heavy burden portion 321 to change the resonant frequency of vibration module 3, simultaneously and the vibration phase of the whole diaphragm group 3 of adjustable。Described outstanding limit 322 material therefor is high life property flexible material, for instance the macromolecular materials such as PU, PET, PEEK。Can pass through to adjust resonant frequency and the vibration phase of the material thickness on described outstanding limit 322 and hardness adjustment vibration module 3 in the present embodiment。The outstanding limit 322 of described passive vibrating diaphragm 32 adopts the macromolecular materials such as PU, PET or PEEK, and surface area is relatively large, and thickness is relatively thin, has the saturating property of good sound。Reticular part 331 that described steel mesh 33 includes being provided with some mesh and stretching out again to a lateral buckling formation edge part 332 from the outer rim of described reticular part 331。Described passive vibrating diaphragm 32 is placed between described protection lid 31 and steel mesh 33, and makes the copper ring 323 of described passive vibrating diaphragm 32, the outer portion 312 of protection lid 31 and the edge part 332 of described steel mesh 33 stacked to form described vibration module 3 along the longitudinal direction。

Refer to Fig. 3, Fig. 4 and Fig. 6, described bonnet 13 generally becomes tubbiness, the rear end of told bonnet 13 extends so that described bonnet 13 is internally formed the 3rd stage portion 131 to center position, described vibration module 3 is placed in interior and steel mesh 33 edge part 332 with being resisted against described 3rd stage portion 131 the vertical shell 1 central axis blocking of described bonnet 13, and wherein, the reticular part 331 of described steel mesh 33 is exposed to the rear end of described bonnet 13。

As shown in Figure 6, the space in described housing 1 is divided into front sound chamber 10 and rear sound chamber 20 by the horn single body 2 of the earphone 100 after assembling, forms passive sound chamber 30 in described vibration module 3。Described rear sound chamber 20 is completely isolated with described front sound chamber 10。

As it is shown in fig. 7, curve 710 show horn single body 2 sends the intensity/frequency curve chart of sound wave。Curve 720 show the intensity of acoustic wave/frequency curve chart after being affected by sound chamber。Described front sound chamber 10 directly contacts with sound system " auditory meatus ", most of sound that horn single body 2 sends is passed directly in user's auditory meatus by described front sound chamber 10, described rear sound chamber 20 isolates with described front sound chamber 10, the front and back sound wave that can make horn single body 2 is unlikely to acoustic short circuit phenomenon occur, and up to compensation sound wave low frequency part, extend sound wave HFS, improve the effect of sound wave medium and low frequency performance。

As shown in Figure 8, curve 810 show in rear sound chamber 20 the phase curve figure of sound wave, and curve 820 show in front sound chamber 10 the phase curve figure of sound wave。Curve 830 show the phase curve figure of sound wave after superposition, shown in figure it can be seen that when current sound chamber 10 produces just to superpose with sound wave in rear sound chamber 20, and sound wave amplification after the two superposition；Otherwise, when the two sound wave produces negative superposition, after the two superposition, sound wave reduces。Described passive sound chamber 30 is positioned at described rear sound chamber 20, rear sound wave through rear sound chamber 20 drives the passive vibrating diaphragm 32 in vibration module 3 to vibrate, passive vibrating diaphragm 32 vibration sounding send with horn single body 2 sound wave superpose can change after low-frequency sound wave phase place and sound press in sound chamber 20, and then the effect of sound wave low frequency in sound chamber 20 after reaching to strengthen, and front sound chamber 10 is made just to superpose with sound wave generation in rear sound chamber 20。

As it is shown in figure 9, when curve 910 show employing closed rear sound chamber 20, external environment condition enters the intensity of acoustic wave/frequency curve chart of sound channel。Curve 920 show and adopts steel mesh 33 and have the vibration module 3 of sound saturating property when causing rear sound chamber 20 semiclosed, enters the intensity of acoustic wave/frequency curve chart of sound channel in external environment condition。Correlation curve 910 and curve 920 are known, owing to passive vibrating diaphragm 32 adopts the macromolecular material of loud property thoroughly, sound chamber 20 after the sound wave in external environment condition can be allowed to enter through vibration module 3, and then make earphone 100 be unlikely to obstruct external environment sound completely, sense of hearing more has spatial impression。

The foregoing is only one embodiment of the present invention, it is not all of or unique embodiment, the change of any equivalence that technical solution of the present invention is taked by those of ordinary skill in the art by reading description of the present invention, the claim being the present invention is contained。

Claims

1. an earphone, including front opening housing, be coated in housing and described housing be isolated into the horn single body in forward and backward sound chamber, described horn single body is electrically connected cable, it is characterized in that: described earphone also includes the vibration module being coated among housing being arranged on rear side of horn single body, described vibration module is provided with the passive sound chamber connected with described rear sound chamber, described passive sound intracavity is provided with passive vibrating diaphragm, and described horn single body sounding drives the passive diaphragm oscillations of passive sound intracavity。

2. earphone as claimed in claim 1, it is characterised in that: described passive vibrating diaphragm includes heavy burden portion, from the outstanding limit of the radially outwardly extending formation in edge, heavy burden portion and from the copper ring of the outstanding limit radially outwardly extending formation of outer rim。

3. earphone as claimed in claim 1, it is characterised in that: the outstanding limit of described passive vibrating diaphragm adopts material to be flexible material。

4. earphone as claimed in claim 2, it is characterised in that: the material in the heavy burden portion of described passive vibrating diaphragm is the composite that aluminium foil or expanded material add metal。

5. earphone as claimed in claim 1; it is characterized in that: the vibration module of described earphone also includes the protection lid being arranged on front side of passive vibrating diaphragm; described protection lid runs through fore-and-aft direction offers some through holes, and described passive sound chamber is connected with described rear sound chamber by described through hole。

6. earphone as claimed in claim 1, it is characterised in that: described passive sound chamber connects with external environment。

7. earphone as claimed in claim 6, it is characterized in that: described vibration module also wraps the steel mesh being arranged on rear side of passive vibrating diaphragm, it is provided with reticular part in the middle part of described steel mesh, the rear end of described housing is provided with opening, the reticular part of described steel mesh is by outside described opening is exposed to housing, and described passive sound chamber is connected with external environment by described reticular part。

8. earphone as claimed in claim 7, it is characterised in that: the outer rim of the reticular part of described steel mesh stretches out formation outer edge in order to be fixed on rear side of described housing by described steel mesh。

9. earphone as claimed in claim 8, it is characterised in that: the copper ring of described passive vibrating diaphragm is stacked and is fixed on the front side of described steel mesh outer edge, so that described passive vibrating diaphragm is fixed on described steel mesh。

10. earphone as claimed in claim 1, it is characterised in that: described housing includes being positioned at the protecgulum of front end, being snapped in the mesochite of described fore shell rear end and be snapped in the bonnet of described mesochite rear end。