CN202310076U - Miniature loudspeaker - Google Patents

Abstract

The utility model discloses a miniature loudspeaker, which comprises a lower cover, an upper cover connected with the lower cover, a receiving cavity composed of the upper cover and the lower cover, placed in the The basin frame and the sounding unit in the storage cavity, the sounding unit includes a vibration system and a magnetic circuit system, the lower cover is provided with a first groove, the basin is provided with a first bump, and the first The protruding block is accommodated in the first groove, and glue is filled between the two for sealing fit. Compared with the prior art, the utility model does not leak the sealing glue after the glue is sealed.

Description

micro speaker

【Technical field】

The utility model relates to a miniature electroacoustic device, in particular to a miniature loudspeaker.

【Background technique】

With the rapid development of electronic information technology, more and more electronic products are applied to speakers as their sound components, such as mobile phones, notebook computers, etc. Today, people not only require speakers to be miniaturized and have good acoustic performance, but also put forward higher requirements for the appearance and aesthetics of micro speakers. People now require that the sealing glue cannot leak out after the micro-speaker is sealed with glue.

The existing micro-speaker is provided with a cover plate and a magnetic circuit system. The cover plate is provided with a receiving hole for exposing the magnetic circuit system. The magnetic circuit system is placed in the receiving hole of the cover plate, and the size of the magnetic circuit system is smaller than the receiving hole, so there is a gap between the magnetic circuit system and the cover plate, and glue is used to seal the gap. Obviously not up to people's requirements.

Therefore, it is necessary to propose a new technical solution to solve the above defects.

【Content of utility model】

The purpose of the utility model is to provide a micro-speaker in which the sealing glue does not leak out.

The purpose of this utility model is achieved in that:

A kind of miniature loudspeaker, it comprises lower cover plate, the upper cover plate that is covered with described lower cover plate, the storage cavity body that is jointly formed by described upper cover plate and lower cover plate, the basin placed in described storage cavity frame and sounding monomer, the sounding monomer includes a vibration system and a magnetic circuit system, the basin frame is provided with an upper surface, a lower surface opposite to the upper surface, and an inner wall and an outer wall connecting the upper surface and the lower surface, and the basin frame The inner wall encloses a through hole for accommodating the magnetic circuit system, the lower cover plate is provided with a first groove, and the basin frame is provided with a first protrusion extending from the upper surface to the lower cover plate, and the first protrusion is accommodated in In the first groove, glue is filled between the two for sealing fit.

Preferably, the lower cover is provided with a storage hole for exposing the magnetic circuit system, and the lower cover is also provided with a retaining wall extending to the upper cover between the first groove and the storage hole.

Preferably, the upper cover is provided with a second groove, the frame is provided with a second protrusion extending from the lower surface to the upper cover, and the second protrusion is accommodated in the second groove.

Preferably, the frame is provided with a third protrusion extending from the inner wall to the through hole, the magnetic circuit system is provided with a protrusion, and the protrusion is at least partially sandwiched between the lower cover plate and the third protrusion, And abut against the inner wall of the pot frame.

Preferably, the upper cover is provided with a limit block extending from the lower cover to abut against the outer wall of the basin frame.

The utility model has the following advantages: the utility model discloses a micro-speaker, which comprises a lower cover, an upper cover connected with the lower cover, and a housing composed of the upper cover and the lower cover. The cavity, the basin frame and the sounding unit placed in the receiving cavity, the sounding unit includes a vibration system and a magnetic circuit system, the lower cover is provided with a first groove, and the basin is provided with a first The protrusion, the first protrusion is accommodated in the first groove, and glue is filled between the two for sealing fit. Compared with the prior art, the utility model does not leak the sealing glue after the glue is sealed.

【Description of drawings】

Fig. 1 is the three-dimensional exploded view of the utility model miniature loudspeaker;

Fig. 2 is the perspective view of the utility model miniature loudspeaker;

Fig. 3 is a sectional view along line III-III shown in Fig. 2;

Fig. 4 is an enlarged view of part A of Fig. 3;

Fig. 5 is the three-dimensional view of the magnetic circuit system of the utility model miniature loudspeaker;

Fig. 6 is the basin frame schematic diagram of the utility model miniature loudspeaker;

Fig. 7 is a schematic diagram of another perspective view of the basin frame of the micro-speaker of the present invention.

【Detailed ways】

Below in conjunction with accompanying drawing, the miniature loudspeaker of the present utility model is described in detail.

As shown in FIG. 1 , it is a miniature speaker 100 of the present invention, which includes a lower cover 8 and an upper cover 1 connected to the lower cover 8 , a vibration system 23 , a magnetic circuit system 456 and a basin frame 7 . The lower cover 8 is provided with a receiving hole 80 for exposing the magnetic circuit system 456 , and the basin frame 7 is provided with a conductive sheet 70 .

The magnetic circuit system 456 includes a pole piece 40 , a main magnet 50 , an auxiliary magnet 51 , an upper plate 41 , and a lower plate 6 . The pole pieces 40 and the main magnetic steel 50 have the same shape and are connected by glue to form a whole. The lower plate 6 is provided with a circular upper surface 60 , a circular lower surface (not labeled) corresponding to the circular upper surface 60 , and an arc-shaped surface 61 connecting the circular upper surface 60 and the circular lower surface. The main magnet 50 is circular and smaller than the lower plate 6 , and the main magnet 50 is attached to the center of the circular upper surface 60 of the lower plate 6 with glue. The auxiliary magnet 51 is a hollow circular magnet, and is attached to the circular upper surface 60 of the lower plate 6 with glue and is concentric with the main magnet 50 . The upper board 41 defines a through hole 410 , and the upper board 41 and the lower board 6 have the same size. Referring to FIG. 5 , the magnetic circuit system 456 is provided with a magnetic gap 9 . The upper plate 41 is covered with glue on the auxiliary magnetic steel 51, and the upper plate 41 in this way plays the role of fixing the auxiliary magnetic steel 51, and the upper plate 41 plays the role of magnetic conduction simultaneously. The secondary magnet 51 is provided with a protruding portion 510 outside the upper plate 41 and the lower plate 6 . The protrusion 510 has an upper surface 5101 close to the upper plate 41 , a lower surface (not numbered) opposite to the upper surface 5101 , and a side surface 5100 connecting the upper surface 5101 and the lower surface.

As shown in FIGS. 1 and 3 , the vibration system 23 includes a diaphragm 2 and a voice coil 3 . The diaphragm 2 is connected with the voice coil 3 . The diaphragm 2 is provided with a dome top 211 , a ring portion 210 and an edge portion 212 connected with the ring portion 210 . One end of the voice coil 3 is bonded to the ring portion 210 of the diaphragm 2 , and the other end of the voice coil 3 is suspended in the magnetic gap 9 . Since the diaphragm 2 is connected to the voice coil 3, when the voice coil 3 vibrates, the voice coil 3 will drive the diaphragm 2 to vibrate together.

As shown in Fig. 6 and Fig. 7, the pot frame 7 is provided with an upper surface 701, a lower surface 702 opposite to the upper surface 701 and an inner wall 704 and an outer wall 703 connecting the upper surface 701 and the lower surface 702, and the inner wall 704 of the pot frame 7 A through hole 700 for accommodating the magnetic circuit system 456 is formed. The basin frame 7 is provided with a first protrusion 71 extending from the upper surface 701 to the lower cover 8, a second protrusion 72 extending from the lower surface 702 to the upper cover 1, and a third protrusion extending from the inner wall 704 to the through hole 700. Block 73. The lower cover 8 is provided with a first groove 81 , and the lower cover 8 is provided with a retaining wall 82 extending between the first groove 81 and the receiving hole 80 to the upper cover 1 . The retaining wall 82 plays the role of isolating the glue. The upper cover 1 is provided with a second groove 11 , and the upper cover 1 is provided with a limiting block 12 extending from the lower cover 8 to abut against the outer wall 703 of the basin frame 7 .

As shown in FIG. 4 , the edge portion 212 of the diaphragm 2 is sandwiched between the upper cover plate 1 and the frame 7 and fixed. The first bump 71 is accommodated in the first groove 81, and the protruding portion 510 of the secondary magnetic steel 51 is at least partially sandwiched between the lower cover plate 8 and the third bump 73, and abuts against The inner wall 704 of the basin frame 7 . In this embodiment, the upper surface 5101 of the protruding portion 510 of the auxiliary magnetic steel 51 abuts against the third bump 73 , the side surface 5100 of the protruding portion 510 abuts against the inner wall 704 of the frame 7 , and the bottom of the protruding portion 510 The surface abuts against the lower cover plate 8 , thus playing the role of fixing and limiting the magnetic circuit system 456 . At the same time, the second protrusion 72 is accommodated in the second groove 11, and the upper cover plate 1 is provided with a limit block 12 extending from the lower cover plate 8 to abut against the outer wall 703 of the basin frame 7, thus achieving a fixed And the effect of limit pot frame 7.

The solution proposed by the utility model is that the basin frame 7 is provided with an upper surface 701, a lower surface 702 opposite to the upper surface 701, and an inner wall 704 and an outer wall 703 connecting the upper surface 701 and the lower surface 702, and the inner wall of the basin bracket 7 703 forms a through hole 700 for accommodating the magnetic circuit system, the lower cover 8 is provided with a first groove 81, and the basin frame 7 is provided with a first protrusion 71 extending from the upper surface 701 to the lower cover 8, The first protrusion 71 is accommodated in the first groove 81 , and glue 81 a is filled therebetween for sealing fit. Compared with the prior art, the utility model does not leak the sealing glue after the glue is sealed.

Preferably, the lower cover 8 is provided with a retaining wall 82 extending between the first groove 81 and the receiving hole 80 to the upper cover 1 to better isolate the glue.

It should be noted that the gap between the auxiliary magnet 51 and the basin frame 7 in Fig. 4, the gap between the auxiliary magnet 51 and the lower cover plate 8, and the gap between the basin frame 7 and the upper cover plate 1 are drawn. Exaggerated drawing, the purpose is to more clearly depict the positional relationship between them.

What has been described above is only the embodiment of the utility model, and it should be pointed out that for those of ordinary skill in the art, improvements can also be made without departing from the inventive concept of the utility model, but these all belong to Protection scope of the present utility model.

Claims (5)

1. Microspeaker; The upper cover plate that it comprises lower cover, connect with said lower cover lid, accommodate cavity, place said basin frame and sounding monomer of accommodating in the cavity by what said upper cover plate and lower cover were formed jointly; Said sounding monomer involving vibrations system and magnetic circuit system; Said basin set up upper surface, with upper surface opposing lower surface and inwall that is connected upper surface, lower surface and outer wall; Inwall by the basin frame surrounds the through hole of accommodating magnetic circuit system, it is characterized in that: said lower cover is provided with first groove, and said basin sets up first projection that extends to lower cover from upper surface; Said first projection is contained in first groove, is filled with glue between the two in order to be sealed and matched.

2. Microspeaker according to claim 1 is characterized in that: said lower cover is provided with the accepting hole that exposes magnetic circuit system, and lower cover also is provided with the barricade that extends to upper cover plate between first groove and accepting hole.

3. Microspeaker according to claim 1 is characterized in that: said upper cover plate is provided with second groove, and said basin sets up second projection that extends to upper cover plate from lower surface, and said second projection is contained in second groove.

4. Microspeaker according to claim 1; It is characterized in that: said basin has set up from inwall to extended the 3rd projection of through hole; Said magnetic circuit system is provided with protuberance, and this protuberance part at least is folded between lower cover and the 3rd projection, and is connected to the inwall of basin frame.

5. Microspeaker according to claim 1 is characterized in that: said upper cover plate is provided with the guide vane end stop that extends butt basin frame outer wall to lower cover.

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