Electro-acoustic element
[technical field]
The utility model relates to a kind of electro-acoustic element, especially a kind of electro-acoustic element that has communication function.
[background technology]
Along with the development in portable consumer electronic product market, electro-acoustic element, the electro-acoustic element that especially has communication functions such as hearing aid energy, NFC has obtained using widely.
Existing electro-acoustic element in order to obtain communication, usually adds the communication voice coil loudspeaker voice coil for it.But, because the size of present electro-acoustic element own is very little, the inner space is very limited, voice coil loudspeaker voice coil is installed in magnetic bowl sidewall or basin frame outside so generally all will communicate by letter, such design, will reduce the volume of magnetic circuit system, and cause the magnetic property of electro-acoustic element to reduce, or will influence the size of loud speaker.
Therefore, be necessary to provide a kind of electro-acoustic element of new band communication function at above-mentioned shortcoming.
[utility model content]
The purpose of this utility model is to solve the deficiency of said structure, and a kind of electro-acoustic element that does not influence reliability with communication function is provided.
According to the problems referred to above, designed a kind of electro-acoustic element, its involving vibrations system and the protecgulum that is covered on described vibrational system, described vibrational system comprises the vibrating diaphragm with connecting portion, this connecting portion is connected in protecgulum in order to fixing vibrating diaphragm, described electro-acoustic element also is provided with the communication voice coil loudspeaker voice coil, it is characterized in that: described communication voice coil loudspeaker voice coil is clipped between the connecting portion of described protecgulum and described vibrating diaphragm.
Preferably, described communication voice coil loudspeaker voice coil comprises voice coil loudspeaker voice coil portion and around the fixed part of voice coil loudspeaker voice coil portion, described fixed part is clipped between the connecting portion of described protecgulum and vibrating diaphragm.
Preferably, described electro-acoustic element also comprises the basin frame with receiving space, and described magnetic circuit system is contained in the basin frame, and described vibrational system is immobilizated in described basin frame.
Preferably, described basin frame is provided with fixed leg, and described protecgulum is provided with fixing hole, described fixed leg and described fixing hole interference engagement.
Preferably, the fixed part of described communication voice coil loudspeaker voice coil is provided with the portion of stepping down, and the fixed leg of described basin frame passes the described portion that steps down.
Preferably, described communication voice coil loudspeaker voice coil is the NFC voice coil loudspeaker voice coil.
The communication voice coil loudspeaker voice coil of electro-acoustic element of the present utility model is held on the centre of described protecgulum and vibrating diaphragm connecting portion, can make this electro-acoustic element stable performance that has communication function, rational in infrastructure.
[description of drawings]
Fig. 1 is the three-dimensional exploded view of the utility model electro-acoustic element;
Fig. 2 is the combination schematic diagram of the utility model electro-acoustic element;
Fig. 3 is the cutaway view of the utility model electro-acoustic element along A-A line shown in Figure 2.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
As depicted in figs. 1 and 2, the utility model provides a kind of electro-acoustic element 100 with communication function, and it comprises basin frame 3 with receiving space 31, be contained in the magnetic circuit system 1 in the basin frame 3 and be immobilizated in vibrational system 2 on the basin frame 3.
Described magnetic circuit system 1 comprises the magnetic bowl 13 that is contained in the basin frame 3, be fixed in the magnet steel 11 of magnetic bowl 13 and be attached at the pole piece 12 on magnet steel 11 surfaces.Form magnetic gap 10 between described magnet steel 11 and the magnetic bowl 13.Described vibrational system 2 comprises vibrating diaphragm 21 that is immobilizated on the basin frame 3 and the driving voice coil loudspeaker voice coil 22 that drives vibrating diaphragm 21 vibrations.Described driving voice coil loudspeaker voice coil 22 is suspended in the magnetic gap 10.Need to prove that described magnetic bowl can also can all can be referred to as the magnetic bowl as long as have the element of the base plate of placement magnet portion (as magnet steel) for having the dull and stereotyped sidewall that is extended by flat board that reaches for bowl-shape.In the present embodiment, described magnetic bowl comprises dull and stereotyped 131 and from described dull and stereotyped 131 two sidewalls 132 that extend.
Described vibrating diaphragm 21 comprises ball top 211 in the middle of being positioned at, around the ring portion 212 at described ball top 211 and the connecting portion 213 that links to each other with described ring portion 212.In the present embodiment, the ball top be slab construction and with drive voice coil loudspeaker voice coil and link to each other, and also be provided with the oscillating plate 23 that plays reinforcement vibrating diaphragm oscillating action that is covered on the described ball top on the vibrating diaphragm.Certainly, in selectable other execution modes, described ball top also can be other structures such as circular arc, and described ball top and ring portion also can be structure as a whole.
Described basin frame 3 comprises sidewall 30 and the receiving space 31 that is surrounded by described sidewall 30.Four jiaos of places of described basin frame 3 also are provided with fixed leg 32.Described magnetic circuit system 1 is contained in the described receiving space 31, and the connecting portion 213 of described vibrating diaphragm 21 is overlapped on the sidewall 30 of described basin frame 3.Need to prove, present embodiment is mentioned described vibrational system and is immobilizated on the basin frame, described vibrating diaphragm is overlapped on the sidewall 30 of basin frame, this is an optimum execution mode of the present utility model, in selectable other execution modes, also can not have the basin frame, described vibrating diaphragm is overlapped on the magnetic circuit system, also can implement.
The communication voice coil loudspeaker voice coil 5 that described electro-acoustic element 100 also comprises on the sidewall 30 that is fixed in described basin frame 3 and is sticked mutually with the connecting portion 212 of described vibrating diaphragm 21.Described communication voice coil loudspeaker voice coil 5 is made for FPC.Described communication voice coil loudspeaker voice coil can be listening help circle, NFC voice coil loudspeaker voice coil etc., and specifically in the present embodiment, described communication voice coil loudspeaker voice coil is the NFC voice coil loudspeaker voice coil.Described communication voice coil loudspeaker voice coil 5 comprises voice coil loudspeaker voice coil portion 51 and around the fixed part 52 of voice coil loudspeaker voice coil portion 51, described fixed part 52 is overlapped on the connecting portion 213 of described vibrating diaphragm 21, described fixed part 52 and fixed leg 32 relative positions are provided with the portion of stepping down 53, and fixed leg 32 passes the described portion 53 that steps down.
Described electro-acoustic element 100 also is provided with the protecgulum 6 that covers basin frame 3, and it comprises the vocal hole 61 that runs through on it.Described protecgulum 6 lids are connected on the fixed part 52 of described communication voice coil loudspeaker voice coil 5.Described protecgulum 6 also is provided with the fixing hole 62 that is positioned at four jiaos of places, and described fixing hole 62 cooperatively interacts with the fixed leg 32 of protecgulum, plays the fixation of basin frame 3 and protecgulum 6, and described communication voice coil loudspeaker voice coil 5 is held on the centre of the connecting portion 213 of described protecgulum 6 and described vibrating diaphragm 21.Certainly, this is a preferred embodiment of the present utility model, and in selectable other execution modes, described protecgulum also can adopt other modes to fix with the voice coil loudspeaker voice coil of communicating by letter, and for example adopts glue gummed etc., also is to reach the purpose of this utility model.
Described electro-acoustic element 100 also is provided with the conducting terminal 4 that embeds basin frame 3.Described conducting terminal 4 one ends link to each other with communication voice coil loudspeaker voice coil 5 with described driving voice coil loudspeaker voice coil 22, and the other end links to each other with extraneous power supply.In the present embodiment, described driving voice coil loudspeaker voice coil is connected in same conducting terminal with described communication voice coil loudspeaker voice coil and is connected with external power source by conducting terminal, in selectable other execution modes, also can have a plurality of conducting terminals, described driving voice coil loudspeaker voice coil is connected with external power source respectively with described communication voice coil loudspeaker voice coil, also can implement.
The communication voice coil loudspeaker voice coil of electro-acoustic element of the present utility model is held on the centre of described protecgulum and vibrating diaphragm connecting portion, can make this electro-acoustic element stable performance that has communication function, rational in infrastructure.
Above-described only is better embodiment of the present 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 protection range of the present utility model.