CN202435569U

CN202435569U - Earphone core

Info

Publication number: CN202435569U
Application number: CN201120492089XU
Authority: CN
Inventors: 董献杰; 朱威
Original assignee: CHANGZHOU MEIOU ELECTRONICS Co Ltd; AAC Acoustic Technologies Shenzhen Co Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2011-12-01
Filing date: 2011-12-01
Publication date: 2012-09-12
Anticipated expiration: 2021-12-01

Abstract

The utility model relates to an earphone core, comprising a housing arranged at a side wall, a magnetic circuit system arranged in the housing, a vibration system fixedly arranged on the housing, and a base plate fixedly arranged below the base plate, wherein the vibration system comprises a vibration film whose periphery is fixedly arranged on a basin frame, and a voice coil with a voice coil lead fixedly arranged below the vibration film; the side wall is provided with a through hole; a spring is arranged in the through hole; one end of the spring is electrically connected with a voice coil lead; the other end of the spring is electrically conducted with the outside through the base plate; and the spring is arranged in the through hole of the side wall of the housing so as to prevent the high temperature generated during the process for welding the earphone cable conducting too fast to influence the welding point of the voice coil lead.

Description

The earphone core

[technical field]

The utility model relates to a kind of electroacoustic transducer, relates in particular in a kind of electroacoustic transducer the earphone core that the signal of telecommunication is converted into voice signal.

[background technology]

In recent years along with the fast development of mobile communication technology; The consumer uses the mobile communication equipment that has phonetic function more and more; And earphone also becomes one of requisite audio-visual equipment in people's daily routines work, and people not only require its outward appearance small and exquisite meticulous, wears conveniently; Require its tonequality good more, third dimension is arranged.Therefore the performance of further raising earphone and the appropriate design more of internal structure have been become the problem of worth research instantly.

Present earphone; Earphone cord and earphone core in it generally all adopt electric smelting iron to weld; And directly adopt electric smelting iron on two pads of earphone core, to weld earphone cord; Certainly will cause the spot welding point of voice coil leads to come off too soon because of the high temperature conduction of velocity that when welding produces, thereby influence the quality of product.

Therefore, be necessary to provide a kind of earphone core of new construction to above-mentioned shortcoming.

[utility model content]

The purpose of the utility model is to solve above-mentioned employing electric smelting iron and on two pads of earphone core, welds earphone cord; Certainly will cause the spot welding point of voice coil leads to come off too soon because of the high temperature conduction of velocity that when welding produces; Thereby influence the deficiency of the quality of product, and a kind of earphone core of new construction is provided.

A kind of earphone core; Comprise the shell frame that is provided with sidewall, the base plate that is contained in the interior magnetic circuit system of shell frame, is immobilizated in the vibrational system on the shell frame and is immobilizated in shell frame below; Said vibrational system comprise periphery be retained on the basin frame vibrating diaphragm be immobilizated in vibrating diaphragm below and have the voice coil loudspeaker voice coil of voice coil leads, said sidewall is provided with through hole, is provided with spring in the said through hole; Said spring one end is electrically connected voice coil leads, and an other end conducts through the base plate and the external world.

Preferably, said sidewall comprises the boss that is positioned at the vibrating diaphragm below and is oppositely arranged, and said through hole is located in this boss.

Preferably, be provided with conductive pole in the said through hole, an end of said conductive pole is connected to spring, and the other end is electrically connected with voice coil leads.

Preferably, said conductive pole is the copper post.

Preferably, said base plate is provided with a through hole over against the position of through hole, and an end of spring passes this through hole and the base plate welding is fixing.

Preferably, said magnetic circuit system comprises magnetic support, and said magnetic support is provided with sheet magnetic sheet and the tubular magnetic post iron that is arranged in the middle of the magnetic sheet, and said magnetic circuit system also comprises and is located magnet steel that forms magnetic gap on the magnetic sheet and around magnetic post iron and the pole piece that attaches the magnet steel surface.

Preferably, said magnet steel quantity is two and curved, and it is separately positioned between the said boss.

The beneficial effect of the utility model is: in the through hole of shell frame sidewall, establish spring, the high temperature conduction of velocity that has produced when having prevented the welding earphone cord is too fast and influence the pad of voice coil leads.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of the utility model earphone core;

Fig. 2 is the cutaway view of Fig. 1 middle ear movement.

[embodiment]

Below in conjunction with accompanying drawing and execution mode the utility model is described further.

As depicted in figs. 1 and 2; The utility model provides a kind of earphone core 1, comprise the shell frame 10 that is provided with sidewall 101, be contained in magnetic circuit system 11 in the shell frame 10, be contained in conductive pole 103 and spring 104 in the through hole 1021 of sidewall 101, be immobilizated on the shell frame 10 vibrational system 12 and respectively fixing shell frame 10 upper and lowers form the protecgulum 13 and the base plate 14 of receiving space.Said vibrational system 12 comprise periphery be retained on the basin frame 10 vibrating diaphragm 121 be immobilizated in vibrating diaphragm 121 belows and have the voice coil loudspeaker voice coil 123 of voice coil leads 122.Said magnetic circuit system 11 comprises magnetic support 111; Said magnetic support 111 is provided with sheet magnetic sheet 1111 and the tubular magnetic post iron 1112 that is arranged in the middle of the magnetic sheet 1111, and said magnetic circuit system 11 also comprises and is located the magnet steel 112 and the pole piece 113 that attaches magnet steel 112 surfaces that forms magnetic gap on the magnetic sheet 1111 and around magnetic post iron 1112.

Said shell frame 10 comprises the boss 102 that is positioned at vibrating diaphragm 121 belows and is oppositely arranged, and said magnet steel 112 quantity are two and curved, and it is separately positioned between the said boss 102.Establish through hole 1021 in the said boss 102, be provided with spring 104 in the said through hole 1021, said spring 104 1 ends are electrically connected voice coil leads 122, and an other end conducts with the external world through base plate 14.In said through hole 1021, be provided with conductive pole 103; Said conductive pole 103 is arranged in the through hole 1021 and near an end of vibrating diaphragm 121; Said conductive pole 103 1 ends are connected to spring 104, and the other end is electrically connected with voice coil leads 122, and said conductive pole 103 is the copper post preferably.Said base plate 14 is provided with a through hole 141 over against the position of through hole 1021, and said spring 104 1 end butt conductive poles 103 electrically connect through this conductive pole 103 and voice coil leads 122, and it is fixing with base plate 14 welding that an other end passes this through hole 141.

Through spring 104 is set in through hole 1021, the high temperature that has produced when having increased the welding earphone cord effectively conducts to the conduction distance of voice coil leads 122 pads, the pad of the temperatures involved voice coil leads 122 that has produced when having prevented the welding earphone cord.

Above-described only is the preferred embodiments of the utility model; Should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; Can also make improvement, but these all belong to the protection range of the utility model.

Claims

1. earphone core; Comprise the shell frame that is provided with sidewall, the base plate that is contained in the interior magnetic circuit system of shell frame, is immobilizated in the vibrational system on the shell frame and is immobilizated in shell frame below; Said vibrational system comprise periphery be retained on the basin frame vibrating diaphragm be immobilizated in vibrating diaphragm below and have the voice coil loudspeaker voice coil of voice coil leads, it is characterized in that: said sidewall is provided with through hole, is provided with spring in the said through hole; Said spring one end is electrically connected voice coil leads, and an other end conducts through the base plate and the external world.

2. earphone core according to claim 1 is characterized in that: said sidewall comprises the boss that is positioned at the vibrating diaphragm below and is oppositely arranged, and said through hole is located in this boss.

3. earphone core according to claim 1 and 2 is characterized in that: be provided with conductive pole in the said through hole, an end of said conductive pole is connected to spring, and the other end is electrically connected with voice coil leads.

4. earphone core according to claim 3 is characterized in that: said conductive pole is the copper post.

5. according to claim 1 or 4 described earphone cores, it is characterized in that: said base plate is provided with a through hole over against the position of through hole, and an end of spring passes this through hole and the base plate welding is fixing.

6. according to claim 2 or 4 described earphone cores; It is characterized in that: said magnetic circuit system comprises magnetic support; Said magnetic support is provided with sheet magnetic sheet and the tubular magnetic post iron that is arranged in the middle of the magnetic sheet, and said magnetic circuit system also comprises and is located magnet steel that forms magnetic gap on the magnetic sheet and around magnetic post iron and the pole piece that attaches the magnet steel surface.

7. earphone core according to claim 6 is characterized in that: said magnet steel quantity is two and curved, and it is separately positioned between the said boss.