CN201426161Y - earphone - Google Patents

earphone Download PDF

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Publication number
CN201426161Y
CN201426161Y CN200920055099XU CN200920055099U CN201426161Y CN 201426161 Y CN201426161 Y CN 201426161Y CN 200920055099X U CN200920055099X U CN 200920055099XU CN 200920055099 U CN200920055099 U CN 200920055099U CN 201426161 Y CN201426161 Y CN 201426161Y
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CN
China
Prior art keywords
frequency
earphone
frequency horn
low
horn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN200920055099XU
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Chinese (zh)
Inventor
符诗华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OCVACO ELECTRONIC Ltd
Original Assignee
OCVACO ELECTRONIC Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OCVACO ELECTRONIC Ltd filed Critical OCVACO ELECTRONIC Ltd
Priority to CN200920055099XU priority Critical patent/CN201426161Y/en
Application granted granted Critical
Publication of CN201426161Y publication Critical patent/CN201426161Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides an earphone, which comprises an earphone body and an audio signal input unit, wherein the earphone body is provided with a shell which is surrounded into a cavity body; anda high-frequency loudspeaker and a low-frequency loudspeaker are accommodated inside the cavity body font and back; the high-frequency loudspeaker is connected with the audio signal input unit by a high-pass filter unit; the low-frequency loudspeaker is connected with the audio signal input unit by a low-pass filter unit; and the shell is surrounded into the cavity body. The earphone adopts two loudspeakers to respectively output high-frequency audio and low-frequency audio, and the outputs of the high-frequency audio and the low-frequency audio are processed by the high-pass filter and the low-pass filter, therefore, the vocal range of the output audios of the earphone is enlarged, the related interference situation between the high-frequency audio and the low-frequency audio can be avoided.

Description

Earphone
Technical field
The utility model relates to a kind of earphone, especially a kind of earphone that is connected with portable music player.
Background technology
Along with the development of Digital Electronic Technique, people are extensive use of various digital electronic products in entertainment life, comprising portable music player, as CD Player, MP3, MP4 etc.When using music player, use wired or wireless earphone to listen to the music mostly.
Existing earphone is made up of earphone body and audio signal input unit, and the earphone body has a housing, and this housing surrounds a cavity, is provided with loudspeaker in cavity.The audio signal input unit of wired earphone includes connector that can be inserted into music player and the connecting line that is connected with connector, and this connecting line is electrically connected with the loudspeaker of earphone body, is sent to loudspeaker with the audio signal with music player output.Wireless headset is a wireless signal receiving circuit as the audio signal input unit of bluetooth earphone, receives the audio signal that music player sends with wireless mode, and with the audio signal output that receives to loudspeaker.
But the volume of existing earphone body is less, only is provided with loudspeaker in the earphone body mostly, and the frequency band of single loudspeaker is narrower, is difficult to realize the audio frequency output of gamut, causes the audio signal that frequency is higher or frequency is lower clearly to export.
Therefore, notification number is that the Chinese utility model patent of CN201008206Y discloses the utility model creation of a kind of " the coaxial earphone of composite type " by name, the loudspeaker that are provided with before and after accommodating two in the earphone body of this earphone, one of them loudspeaker is the moving-coil loudspeaker, the center of moving-coil loudspeaker is provided with guide hole, be fitted with conduit in the guide hole, terminal fixedly connected balance spring formula loudspeaker of conduit.Like this, by two loudspeaker technical parameters are set, thereby the operating frequency of two loudspeaker is set, loudspeaker are set to high-frequency horn, and loudspeaker are set to Low frequency horn, realize that earphone has the purpose of relative broad range frequency response.
Yet, because two loudspeaker of above-mentioned earphone are the output that realizes high-frequency audio and low frequency audio frequency by the connection of mechanical structure, two loudspeaker are connected with the audio signal input unit by same lead, just in the cavity of earphone body, high-frequency audio and bass frequency division are opened, owing to reasons such as production technologies, the high-frequency audio of this earphone can not separate by two loudspeaker outputs fully with the low frequency audio frequency, often cause the mutual interference mutually of high-frequency audio and low frequency audio frequency, cause sound chaos, tonequality not good.
Summary of the invention
Main purpose of the present utility model provides a kind of earphone of output audio range broad;
Another purpose of the present utility model provides a kind of high-frequency audio and the low frequency audio frequency is exported non-interfering earphone.
For realizing above-mentioned main purpose, the earphone that the utility model provides includes earphone body and audio signal input unit, wherein the earphone body has a housing, this housing surrounds a cavity, the high-frequency horn and the Low frequency horn that are provided with before and after accommodating in the cavity, wherein, high-frequency horn is connected with the audio signal input unit by high pass filter unit, and Low frequency horn is connected with the audio signal input unit by low-pass filter unit.
By such scheme as seen, high-frequency horn in the earphone body is connected with the audio signal input unit by high pass filter unit and low-pass filter unit respectively with Low frequency horn, input to the Filtering Processing of the audio signal of high-frequency horn through high pass filter unit, low frequency signal is filtered, and the high-frequency signal of output is clear.Simultaneously, export the Filtering Processing of the audio signal of Low frequency horn to, high-frequency signal is filtered, make that the output of low frequency audio frequency is rich strong through low-pass filter unit.
Because high-frequency horn and Low frequency horn are exported the audio frequency of characteristic frequency separately, widen the range of earphone output audio greatly.And, by the parameter of high pass filter unit and low-pass filter unit is set, can make the frequency band non-overlapping copies of two loudspeaker output audios, effectively avoid the generation of high-frequency audio and the mutual disturbed condition of low frequency audio frequency, improve the tonequality of earphone.
A preferred scheme is, high-frequency horn and Low frequency horn are circle, and the axis of high-frequency horn and the axis of Low frequency horn are on same straight line.Like this, the low frequency audio frequency of the high-frequency audio of high-frequency horn output and Low frequency horn output can be along same straight line diffusion and stack, and the low frequency audio frequency and the high-frequency audio of earphone output are more obvious.
Further scheme is, the diameter of high-frequency horn is less than the diameter of Low frequency horn, and is provided with circular sound insulation sheet between high-frequency horn and the Low frequency horn, and the diameter of sound insulation sheet is not less than the diameter of high-frequency horn, and is not more than the diameter of Low frequency horn.
Because the sound insulation sheet can be separated the high-frequency audio of high-frequency horn output and the bass of Low frequency horn output effectively, avoids high-frequency audio and the mutual interference mutually in the cavity of earphone body of low frequency audio frequency, improves the tonequality of earphone.
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment earphone body;
Fig. 2 is the STRUCTURE DECOMPOSITION figure that the utility model embodiment earphone body has dwindled;
Fig. 3 is the cutaway view of the utility model embodiment earphone body;
Fig. 4 is the electrical schematic diagram of the utility model embodiment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment
Earphone of the present utility model has one or two earphone body and audio signal input unit, and the audio signal input unit receives the audio signal of music player output by wired or wireless mode, and with the audio signal output that receives to loudspeaker.If earphone is a wired earphone, the audio signal input unit includes connector that is inserted into music player and the connecting line that is connected with connector, and connecting line is connected with loudspeaker.If earphone is wireless headset, then the audio signal input unit includes the wireless signal receiving circuit with the music player radio communication, receives the audio signal of music player output by modes such as bluetooth, WIFI, infrared rays.
The utility model is described the utility model as embodiment with the wired earphone that has two earphone bodies.
Referring to Fig. 1, the earphone body has a housing, and housing includes procapsid 11 and back casing 12, and procapsid 11 surrounds a cavity with back casing 12.
Referring to Fig. 2, in cavity, be provided with two loudspeaker, be respectively high-frequency horn 21 and Low frequency horn 22, and high-frequency horn 21 is provided with Low frequency horn 22 front and back.High-frequency horn 21 is circle with the cross section of Low frequency horn 22, and the cross-sectional area of high-frequency horn 21 is less, is arranged on the side near procapsid 11, and the cross-sectional area of Low frequency horn 22 is bigger, is arranged on the side near back casing 12.Between high-frequency horn 21 and Low frequency horn 22, also be provided with a circular sound insulation sheet 23, the diameter of sound insulation sheet 23 is not less than the diameter of high-frequency horn 21, and diameter less than Low frequency horn 22, with with the high-frequency audio of high-frequency horn 21 and Low frequency horn 22 outputs and bass frequency division every, avoid the mutual interference mutually of high-frequency audio and low frequency audio frequency.
Side at high-frequency horn 21 close Low frequency horns 22 has a columniform projection 31, sound insulation sheet 23 centers are a manhole 32, the equal diameters of the diameter of through hole 32 and projection 31, like this, sound insulation sheet 23 can be sleeved on the high-frequency horn 21, make sound insulation sheet 23 be securely fixed in high-frequency horn 21 after.
Preferably, sound insulation sheet 23 is a sheet metal, utilizes metal rigidity better, the long-term advantage that is difficult for deforming of using, the useful life of increase earphone.Certainly, during practical application, sound insulation sheet 23 can also use plastics or pottery to wait other multiple materials to make.
Be provided with circuit board 25 in back casing 12, circuit board 25 is provided with inductance L and capacitor C, and inductance L and capacitor C are connected with Low frequency horn 22 and high-frequency horn 21 as low-pass filter unit and high pass filter unit respectively.
In the present embodiment, back casing 12 is provided with three cosmetic sheet, be arranged on respectively back casing 12 upper ends cosmetic sheet 13, be arranged on the cosmetic sheet 14,15 on back casing 12 sidewalls.Be provided with a sleeve 17 in the lower end of back casing 12, the connecting line (not shown) and is connected with circuit board 25 in sleeve 17 penetrates back casing 12.
Be provided with a tail cover 16 in the lower end of back casing 12, be sleeved on the sleeve 17, sleeve 17 is protected.
Referring to Fig. 3, high-frequency horn 21 is circle with the cross section of Low frequency horn 22, and the axis of the axis of high-frequency horn 21 and Low frequency horn 22 is on same straight line, and just high-frequency horn 21 and Low frequency horn 22 coaxial installations are so that high-frequency audio and low frequency audio frequency superpose in cavity.
As seen from Figure 3, the diameter of high-frequency horn 21 is D1, and the diameter of Low frequency horn 22 is D2, and the diameter of sound insulation sheet 23 is D 3, and the diameter D2 of Low frequency horn 22 is much larger than the diameter D1 of high-frequency horn 21.Preferably, the diameter D2 of Low frequency horn 22 is 15.4 millimeters, and the diameter D1 of high-frequency horn 21 is 8.7 millimeters.
And in the present embodiment, the diameter D 3 of sound insulation sheet 23 is slightly larger than the diameter D1 of high-frequency horn 21, and much smaller than the diameter D2 of Low frequency horn 22.Like this, help with the bass frequency division of the high-frequency audio of high-frequency horn 21 output and Low frequency horn 22 outputs every, can not cover the low frequency audio frequency that Low frequency horn 22 is exported again because of diameter D3 is excessive.
Simultaneously, distance between high-frequency horn 21 end faces 33 and Low frequency horn 22 end faces 34 is D4, preferably, distance D 4 is 6 millimeters, can guarantee that high-frequency horn 21 and the high-frequency audio and the low frequency audio frequency of Low frequency horn 22 outputs do not disturb mutually, can avoid excessive again, make troubles for user's use because of the excessive volume of earphone body that causes of distance between two loudspeaker.
Referring to Fig. 4, the audio signal input unit of earphone has L channel input terminal L-IN, R channel input terminal R-IN and earth terminal GND, L channel input terminal L-IN is electrically connected with high-frequency horn 21a, Low frequency horn 22a by lead, and to high-frequency horn 21a, Low frequency horn 22a output audio signal.R channel input terminal R-IN is connected with high-frequency horn 21b, Low frequency horn 22b by lead.
As seen from Figure 4, high-frequency horn 21a is connected with L channel input terminal L-IN by capacitor C 1, and capacitor C 1 is the high pass filter unit of present embodiment, and capacitor C 1 is connected in series between L channel input terminal L-IN and the high-frequency horn 21a.The audio signal of L channel input terminal L-IN output is carried out Filtering Processing through capacitor C 1, exports high-frequency horn 21a output behind the low frequency audio frequency in the filtering audio signal to.
In the same manner, Low frequency horn 22a is connected with L channel input terminal L-IN by the inductance L 1 as low-pass filter unit, and inductance L 1 is connected between L channel input terminal L-IN and the Low frequency horn 22a.The audio signal of L channel input terminal L-IN output is carried out low-pass filtering treatment through inductance L 1, with the high-frequency audio filtering in the audio signal, exports low-frequency audio signal to Low frequency horn 22a output.
By the parameter of control capacittance C1, inductance L 1 and high-frequency horn 21a, Low frequency horn 22a, high-frequency horn 21a output band can be set at the 5k hertz to the 22k hertz, Low frequency horn 22a output band is set at 20 hertz to the 5k hertz.Like this, 20 hertz of audio frequency to the 22k hertz are exported respectively by two loudspeaker, and two loudspeaker output band non-overlapping copies, when increasing earphone output audio range scope, can guarantee not disturbing mutually of high-frequency audio and low frequency audio frequency again, improve the tonequality of earphone.
Certainly, during practical application, high-frequency horn 21a and Low frequency horn 22a output band can be determined by actual conditions, can be according to two loudspeaker output bands of parameter change scope of different use occasion control capacittance C1, inductance L 1 and high-frequency horn 21a, Low frequency horn 22a, thus suitable acoustics obtained.
In like manner, R channel input terminal R-IN is connected with high-frequency horn 21b by capacitor C 2, is connected with Low frequency horn 22b by inductance L 2, and its connected mode is identical with the connected mode of L channel input terminal L-IN, does not repeat them here.
In the present embodiment, earphone uses capacitor C 1, C2 as high pass filter unit, uses inductance L 1, L2 as low-pass filter unit, and simple in structure, production cost is lower.During actual the use, can use special-purpose high pass filter to substitute capacitor C 1, C2, use special-purpose low pass filter to substitute inductance L 1, L2, can obtain better filter effect as low-pass filter unit as high pass filter unit.
By such scheme as seen, the earphone of present embodiment is the output respectively that realizes high-frequency audio and low frequency audio frequency by high pass filter unit and low-pass filter unit, can accurately set high-frequency horn and Low frequency horn output band scope by the parameter of regulating high pass filter unit and low-pass filter unit, can effectively avoid the generation of high-frequency audio and the mutual disturbed condition of low frequency audio frequency, improve the tonequality of earphone greatly.
Certainly, the foregoing description only is the preferable embodiment of the utility model, during practical application more variation can also be arranged, and for example, the High frequency filter unit uses a plurality of capacitances in series to form, and the low frequency filtering unit uses a plurality of inductance to be composed in series; Perhaps, with high-frequency horn and Low frequency horn location swap etc. is set, this can realize the purpose of this utility model equally.
It is emphasized that at last the utility model is not limited to above-mentioned execution mode, also should be included in the protection range of the utility model claim as the change of high-frequency horn and Low frequency horn size, the small variations such as change of sound insulation sheet manufactured materials.

Claims (8)

1, earphone comprises earphone body and audio signal input unit, and described earphone body has
Housing, described housing surrounds a cavity, the high-frequency horn and the Low frequency horn that are provided with before and after accommodating in the described cavity;
It is characterized in that:
Described high-frequency horn is connected with the audio signal input unit by high pass filter unit, and described Low frequency horn is connected with the audio signal input unit by low-pass filter unit.
2, earphone according to claim 1 is characterized in that:
Described high pass filter unit is an electric capacity that is connected in series with high-frequency horn.
3, earphone according to claim 1 is characterized in that:
Described low-pass filter unit is an inductance that is connected in series with Low frequency horn.
4, according to each described earphone of claim 1 to 3, it is characterized in that:
Described high-frequency horn and Low frequency horn are circle, and the axis of described high-frequency horn and the axis of Low frequency horn are on same straight line.
5, according to each described earphone of claim 1 to 3, it is characterized in that:
Described housing comprises a procapsid and a back casing, and described high-frequency horn is arranged on the side near procapsid.
6, according to each described earphone of claim 1 to 3, it is characterized in that:
Described high-frequency horn and Low frequency horn are circle, and the diameter of described Low frequency horn is greater than the diameter of described high-frequency horn.
7, earphone according to claim 6 is characterized in that:
Be provided with a circular sound insulation sheet between described high-frequency horn and the Low frequency horn, the diameter of described sound insulation sheet is more than or equal to the diameter of described high-frequency horn.
8, earphone according to claim 7 is characterized in that:
Described sound insulation sheet is sheet metal or plastic sheet.
CN200920055099XU 2009-04-22 2009-04-22 earphone Expired - Fee Related CN201426161Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920055099XU CN201426161Y (en) 2009-04-22 2009-04-22 earphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920055099XU CN201426161Y (en) 2009-04-22 2009-04-22 earphone

Publications (1)

Publication Number Publication Date
CN201426161Y true CN201426161Y (en) 2010-03-17

Family

ID=42025618

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920055099XU Expired - Fee Related CN201426161Y (en) 2009-04-22 2009-04-22 earphone

Country Status (1)

Country Link
CN (1) CN201426161Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101527873A (en) * 2009-04-22 2009-09-09 中山奥凯华泰电子有限公司 Earphone
TWI558222B (en) * 2012-12-26 2016-11-11 鴻海精密工業股份有限公司 Earphone

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101527873A (en) * 2009-04-22 2009-09-09 中山奥凯华泰电子有限公司 Earphone
TWI558222B (en) * 2012-12-26 2016-11-11 鴻海精密工業股份有限公司 Earphone

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20100317

Termination date: 20180422