CN202310078U

CN202310078U - Loudspeaker

Info

Publication number: CN202310078U
Application number: CN2011203890492U
Authority: CN
Inventors: 徐芸霞; 许骞
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Priority date: 2011-10-13
Filing date: 2011-10-13
Publication date: 2012-07-04
Anticipated expiration: 2021-10-13

Abstract

The utility model relates to a loudspeaker, which comprises a frame, a diaphragm fixedly held on the frame, a magnetic bowl contained in the frame and a voice coil with one end fixedly held below the diaphragm. The frame comprises a long side lateral wall and a wide side lateral wall connected with the long side lateral wall. The magnetic bowl comprises a magnetic bowl bottom wall and a magnetic lateral wall extending out from the magnetic bowl bottom wall. The frame, the diaphragm and the magnetic bowl define an inner cavity, a fallen portion is arranged on the wide side lateral wall, a lateral wall is arranged between the fallen portion and the inner cavity, and a groove for being communicated with the inner cavity to balance internal air pressure is arranged on the lateral wall. Due to the groove arranged on the wide side lateral wall of the frame, leakage speed of air of the inner cavity is greatly increased, air permeability and flexibility of the loudspeaker are improved, and acoustic performance of the loudspeaker is improved.

Description

Loud speaker

[technical field]

The utility model relates to a kind of electroacoustic transducer, especially refers in a kind of electroacoustic transducer the signal of telecommunication is converted into the loud speaker of voice signal.

[background technology]

Along with the fast development of wireless telecommunications, Global Mobile Phone is more and more, and people are not limited only to basic conversation to the requirement of mobile phone, more requires the face shaping of traditional mobile phone is proposed more requirements.Especially the arrival in 3G epoch, mobile multimedia technology be development thereupon also, and a lot of mobile phones have multiple amusement function, and like video playback, digital vedio recording, recreation, GPS navigation etc., this requires mobile phone screen increasing, so that better visual experience.

The loud speaker of tradition mobile phone generally all comprises the basin frame, be contained in magnetic bowl in the basin frame, accommodate the magnet steel in the magnetic bowl, a vibrating diaphragm and an end that is retained on the basin frame is retained on the voice coil loudspeaker voice coil on the vibrating diaphragm; And form magnetic gap between magnetic bowl and the magnet steel, and the other end of voice coil loudspeaker voice coil is suspended in this magnetic gap, and said basin frame and magnetic bowl, vibrating diaphragm surround an inner chamber; Concerning the loud speaker of this traditional structure; Generally all be on the basin frame, to open leak to control inner chamber air pressure, still, this position of opening is little away from voice coil loudspeaker voice coil and aperture; This certainly will cause gas permeability bad, thereby influences the acoustical behavior of loud speaker.

Therefore, be necessary a kind of new loud speaker to be provided to above-mentioned shortcoming.

[utility model content]

It is too small away from voice coil loudspeaker voice coil and aperture that the purpose of the utility model is to solve conventional loudspeakers leak position, thereby cause the deficiency that the loud speaker gas permeability is bad, the loud speaker acoustical behavior is not good, and a kind of loud speaker is provided.

A kind of loud speaker; The magnetic bowl, the end that comprise the basin frame, be immobilizated in vibrating diaphragm on the basin frame, are contained in the basin frame are immobilizated in the voice coil loudspeaker voice coil under the said vibrating diaphragm; Said basin frame comprises long side wall and the broadside sidewall that joins with the long side wall; Said magnetic bowl comprises magnetic bowl diapire and from the extended magnetic bowl of magnetic bowl diapire sidewall, said basin frame, vibrating diaphragm and magnetic bowl surround an inner chamber, and said broadside sidewall is provided with subsidence part; Be provided with side wall between said subsidence part and the inner chamber, said side wall is provided with the groove that through-lumen is used for the balance internal gas pressure.

Preferably, be provided with the gap that is used for the inner chamber escape of air between the two ends of said magnetic bowl diapire long axis direction and the broadside sidewall.

Preferably, the long side wall of said basin frame and the broadside sidewall corner of joining also is provided with the support level that is used to support the magnetic bowl.

Preferably, cover an Air Filter on said groove and the gap.

Preferably, the two ends of said magnetic bowl diapire long axis direction are provided with the step of stepping down, and the corresponding end of said Air Filter is fixed in this step of stepping down, and an other end of said Air Filter is fixed on the subsidence part of broadside sidewall.

The beneficial effect of the utility model is: through on basin frame broadside sidewall, establishing groove, thereby promoted inner chamber escape of air speed widely, strengthened the gas permeability and the sensitivity of loud speaker, thereby promoted the acoustical behavior of loud speaker.

[description of drawings]

Fig. 1 is the three-dimensional exploded view of loud speaker;

Fig. 2 is the stereogram of loud speaker among Fig. 1;

Fig. 3 is the stereogram that loud speaker lacks magnetic bowl and Air Filter among Fig. 1;

Fig. 4 is along the cutaway view of A-A line among Fig. 2;

Fig. 5 is the enlarged drawing of C among Fig. 4.

[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 loud speaker 1, it comprises basin frame 10, be contained in magnetic bowl 11 in the basin frame 10, be contained in magnet steel 12 in the magnetic bowl 11, be attached to magnet steel 12 surfaces pole piece 13, be retained on vibrating diaphragm 14, an end on the basin frame 10 and be retained on voice coil loudspeaker voice coil 15 under this vibrating diaphragm 14, be embedded and cooperate the loam cake 17 that forms receiving space at the conducting terminal 16 that is used to import the signal of telecommunication on the basin frame 10, with basin frame 10 and stick on the Air Filter 19 that is used for dust protection on basin frame 10 and the magnetic bowl 11.Said conducting terminal 16 1 ends electrically connect with extraneous; Its other end and voice coil loudspeaker voice coil 15 electrically connect; When the signal of telecommunication in the external world is passed to voice coil loudspeaker voice coil 15 by conducting terminal 16; Voice coil loudspeaker voice coil 15 is sounded thereby drive vibrating diaphragm 14 vibrations along with the frequency of alternating current is done the reciprocating motion of cutting magnetic line in magnetic gap.

Said basin frame 10 comprises long side wall 103 and the broadside sidewall 104 that joins with long side wall 103.Said magnetic bowl 11 comprises magnetic bowl diapire 111 and from magnetic bowl diapire 111 extended pair of opposing magnetic bowl sidewalls 112.Said long side wall 103 is provided with the support level 105 that is used to support magnetic bowl 11 with the corner that broadside sidewall 104 joins, and said magnetic bowl diapire 111 is retained on this support level 105.

Arrive shown in Figure 5 like Fig. 3; Said broadside sidewall 104 is provided with subsidence part 1041; Be provided with side wall 1042 between said subsidence part 1041 and the inner chamber 18; Said side wall 1042 is provided with the groove 1043 that through-lumen 18 is used for the balance internal gas pressure; Be provided with the gap 1112 that is used for the inner chamber escape of air between the two ends of said magnetic bowl diapire 111 long axis directions and the broadside sidewall 104, cover an Air Filter 19 on said groove 1043 and the gap 1112, said Air Filter 19 can prevent effectively that the dust of external environment from entering into loud speaker 1 inside.

The two ends of said magnetic bowl diapire 111 long axis directions are provided with the step 1111 of stepping down; Said Air Filter 19 corresponding ends are fixed in this step 1111 of stepping down; An other end of said Air Filter 19 is fixed on the subsidence part 1041 of broadside sidewall 104, like this, guarantees in the overall dimension that does not influence loud speaker 1; Leave enough spaces and be convenient to the four sides gum, be beneficial to the installation of loud speaker 1.

And the existence of gap 1112 and groove 1043 has not only increased inner chamber escape of air speed, and position of opening is nearer from voice coil loudspeaker voice coil 15; The inner chamber air can vertically leak through gap 1112, can pass through groove 1043 transverse leakages again, has reduced air damping; Increased the gas permeability of loud speaker 1, can both breathe freely in the back side of loud speaker 1 and side, like this; The sensitivity of loud speaker 1 is higher, has improved the acoustical behavior of loud speaker 1.

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. loud speaker; The magnetic bowl, the end that comprise the basin frame, be immobilizated in vibrating diaphragm on the basin frame, are contained in the basin frame are immobilizated in the voice coil loudspeaker voice coil under the said vibrating diaphragm; Said basin frame comprises long side wall and the broadside sidewall that joins with the long side wall; Said magnetic bowl comprises magnetic bowl diapire and from the extended magnetic bowl of magnetic bowl diapire sidewall, said basin frame, vibrating diaphragm and magnetic bowl surround an inner chamber, it is characterized in that: said broadside sidewall is provided with subsidence part; Be provided with side wall between said subsidence part and the inner chamber, said side wall is provided with the groove that through-lumen is used for the balance internal gas pressure.

2. loud speaker according to claim 1 is characterized in that: be provided with the gap that is used for the inner chamber escape of air between the two ends of said magnetic bowl diapire long axis direction and the broadside sidewall.

3. loud speaker according to claim 1 is characterized in that: the corner that the long side wall of said basin frame and broadside sidewall join also is provided with the support level that is used to support the magnetic bowl.

4. loud speaker according to claim 2 is characterized in that: cover an Air Filter on said groove and the gap.

5. loud speaker according to claim 4; It is characterized in that: the two ends of said magnetic bowl diapire long axis direction are provided with the step of stepping down; The corresponding end of said Air Filter is fixed in this step of stepping down, and an other end of said Air Filter is fixed on the subsidence part of broadside sidewall.