CN205596325U - Electroacoustic transducer - Google Patents

Abstract

The utility model discloses an electroacoustic transducer, shell (1) has, link firmly connection shell fragment (2) on shell (1), link firmly vibrating diaphragm (7) on shell (1), and link firmly basin frame (3) on shell (1), vibrating diaphragm (7), the back operatic tunes of transducer is enclosed into jointly in shell (1) and basin frame (3), connect shell fragment (2) including shell fragment body (21), reach via the water conservancy diversion portion (22) that shell fragment body (21) extends, water conservancy diversion portion (22) stretches into in the operatic tunes of back, and and form to make the back operatic tunes and external communicating phonate hole (S) between basin frame (3). The utility model discloses the at least partial phonate hole of transducer through connecting the shell fragment and having formed the back operatic tunes, the effect through water conservancy diversion portion can also realize smoothly switching on of air current, is favorable to improving the transducer performance, the utility model discloses the embedded assembly of well connection shell fragment can effectively reduce the cost of shell subassembly.

Description

Electroacoustic transducer

Technical field

This utility model relates to electro-acoustic product technical field, more specifically, this utility model relates to one Electroacoustic transducer.

Background technology

Electroacoustic transducer in this utility model specifically refers to convert electrical signals to the electricity of acoustical signal Acoustic device, such as speaker, receiver etc., wherein, the key component of electroacoustic transducer is Magnetic circuit system and vibrational system, magnetic circuit system mainly includes the frame being fixedly connected on shell, fixes The centring magnet being connected on the bottom of frame, is formed for sound between side of sidewall portion and the centring magnet of frame The magnetic gap that circle is inserted；Vibrational system mainly includes the voice coil loudspeaker voice coil being arranged in magnetic gap and fixes with voice coil loudspeaker voice coil The vibrating diaphragm connected, wherein, vibrating diaphragm, is entered along being fixedly connected on the step surface of shell by its neighboring And the inner chamber of electroacoustic transducer is divided into there is the rear operatic tunes of voice coil loudspeaker voice coil and the front operatic tunes relative with the rear operatic tunes. Based on said structure, the operation principle of electroacoustic transducer is: voice coil loudspeaker voice coil will be when receiving audio signal Vibrate under the effect of magnetic circuit system, and then drive diaphragm oscillations to instigate surrounding air sounding, this requirement The front operatic tunes should arrange the acoustic aperture that goes out being in communication with the outside, and for the balance purpose such as acoustic pressure, heat radiation, after The operatic tunes be also required to arrange be in communication with the outside go out acoustic aperture, at present, the acoustic aperture that goes out of the rear operatic tunes is typically directly It is opened on the sidewall of shell.

In order to make electroacoustic transducer form a complete product, it is except above-mentioned vibrational system and magnetic circuit Outside system, also having aid system, this aid system includes that above-mentioned shell and vibrating diaphragm surround front sound The protecgulum in chamber and by the connection shell fragment etc. in externally connected for voice coil loudspeaker voice coil drive circuit.Here, owing to shaking The structure of dynamic system and magnetic circuit system is relatively fixed, substantially therefore, in the evolution of electroacoustic transducer In, technical staff is constantly by improving aid system and then simplifying its processing technology, reduce its production Cost, has been difficult to have bigger in this aspect by single parts are carried out structure improvement Breaking through, this makes electroacoustic transducer meet with development bottleneck in terms of simplifying processing technology.

Utility model content

One purpose of this utility model embodiment is to provide a kind of electroacoustic transducer, this electroacoustic transducer At least partly go out acoustic aperture by connect that shell fragment forms the rear operatic tunes, and then simplify processing technology.

According to first aspect of the present utility model, it is provided that a kind of electroacoustic transducer, there is shell, consolidate Calmly connect connection shell fragment, the vibrating diaphragm being fixedly connected on described shell on the housing and fix Connecting frame on the housing, wherein, described vibrating diaphragm, described shell and described frame are enclosed jointly Become the rear operatic tunes of described electroacoustic transducer；Described connection shell fragment includes elastic sheet body and via described bullet The diversion division that sheet body extends, described diversion division stretches in the described rear operatic tunes, and described diversion division with Be formed such that between described frame the described rear operatic tunes with the external world communicate go out acoustic aperture.

Preferably, described frame includes bottom, side of sidewall portion and corner, described electroacoustic transducer Being fixedly connected on described bottom in the centring magnet operatic tunes in the rear, described side of sidewall portion is via the described end Portion's bending extends in the described rear operatic tunes, and forms magnetic gap, described corner with described centring magnet Stretch out via described bottom indentation, there between adjacent two side of sidewall portion；Described diversion division is concrete Be formed such that between described corner the described rear operatic tunes with the external world communicate go out acoustic aperture.

Preferably, the inwall of described shell is provided with the supporting part of corresponding each described corner, Described frame is supported on described supporting part by described corner.

Preferably, described diversion division include the bottom training wall relative with described corner and via Two side training walls that described bottom training wall extends towards the bending of described corner, and said two side Training wall sets up the both sides going out acoustic aperture in correspondence separately.

Preferably, described elastic sheet body includes fixed part, revers turn part and elastic arm portion, described elastic arm portion Accept via described revers turn part and described fixed part, a part for described fixed part and described revers turn part with The surface laminating of described shell.

Preferably, described elastic sheet body also includes that the end via described fixed part is towards described elastic arm The limiting section that portion's bending extends, described limiting section is provided with the movement travel for limiting described elastic arm portion Spacing elongated hole；The end in described elastic arm portion forms positive stop hook, and described positive stop hook penetrates described spacing In elongated hole.

Preferably, described electroacoustic transducer has two described connection shell fragments, described connection shell fragment with After the molding respectively of described shell, assembling is fixing；The diversion division of each described connection shell fragment and described frame it Between formed described in go out acoustic aperture, the most right on the length direction of described frame.

Preferably, described connection shell fragment also includes the elastic card claw extended via described elastic sheet body, Described shell is provided with the draw-in groove adaptive with described elastic card claw, described elastic card claw and corresponding draw-in groove card Connecing formation barb structure, described barb structure is arranged to limit corresponding elastic card claw from corresponding draw-in groove Abjection.

Preferably, described connection shell fragment be arranged by a described elastic card claw formed described in lead Stream portion.

Preferably, described shell is additionally provided with for guiding described elastic card claw to embed in corresponding draw-in groove Guiding surface.

Inventor of the present utility model finds, in the prior art, there is the system simplifying electroacoustic transducer The problem running into development bottleneck as process aspect, and the function owing to connecting shell fragment with go out acoustic aperture is complete Different and without any relatedness, therefore, this utility model connects shell fragment by combining and goes out acoustic aperture letter Change processing technology technical assignment be that those skilled in the art never expect or it is not expected that, Therefore this utility model is a kind of new technical scheme.

One of the present utility model has the beneficial effects that, this utility model electroacoustic transducer is by rear load Connect that shell fragment defines the rear operatic tunes at least partly goes out acoustic aperture, and this eliminates and additionally arranges this part and go out acoustic aperture Design and/or operation, therefore for current state of development, compared in traditional structure connect For the technique of shell fragment integrated injection molding, the connection shell fragment of this kind of structure uses and is directly embedded into formula assembling, energy Enough processing technology simplifying electroacoustic transducer (particularly shell) largely, reduce production cost. It addition, the diversion division stretched in the rear operatic tunes by connecting shell fragment forms out acoustic aperture, diversion division can be passed through Effect realize the smooth and easy conducting of air-flow, and then be conducive to improving the performance of electroacoustic transducer.

By detailed description to exemplary embodiment of the present utility model referring to the drawings, this practicality Novel further feature and advantage thereof will be made apparent from.

Accompanying drawing explanation

Combined in the description and the accompanying drawing of the part that constitutes description shows this utility model Embodiment, and be used for explaining principle of the present utility model together with its explanation.

Fig. 1 is the structural representation of a kind of embodiment according to this utility model electroacoustic transducer；

Fig. 2 is that electroacoustic transducer shown in Fig. 1 is from the structural representation of another view；

Fig. 3 is the decomposing schematic representation of electroacoustic transducer shown in Fig. 1 and Fig. 2；

Fig. 4 is the structural representation of a kind of embodiment connecting shell fragment in Fig. 1 to Fig. 3；

Fig. 5 is the close-up schematic view of the diversion division connecting shell fragment in Fig. 4；

Fig. 6 is the structural representation of frame in Fig. 1 to Fig. 3；

Fig. 7 is the structural representation after the removal frame of electroacoustic transducer shown in Fig. 2；

Fig. 8 is the close-up schematic view of A2 part in Fig. 7；

Fig. 9 be electroacoustic transducer shown in Fig. 2 tiltedly cut open schematic diagram through diversion division；

Figure 10 is the elevational schematic through diversion division of electroacoustic transducer shown in Fig. 2；

Figure 11 is the structural representation after the removal connection shell fragment of electroacoustic transducer shown in Fig. 7；

Figure 12 is the close-up schematic view of A1 part in Figure 11.

Description of reference numerals:

1-shell；11a, 11b-draw-in groove；

12-supporting part；13a, 13b-guiding surface；

2-connects shell fragment；21-elastic sheet body；

211-fixed part；212-revers turn part；

213-elastic arm portion；213a-positive stop hook；

214-limiting section；The spacing elongated hole of 214a-；

22-diversion division；23a, 23b-elastic card claw；

Training wall bottom 221-；222-side training wall；

3-frame；Bottom 31-；

32-side of sidewall portion；33-corner；

4-centring magnet；5-center washer；

6-voice coil loudspeaker voice coil；61-voice coil leads；

7-vibrating diaphragm；8-reinforcement part；

9-protecgulum；S-goes out acoustic aperture.

Detailed description of the invention

Various exemplary embodiment of the present utility model is described in detail now with reference to accompanying drawing.It should be noted that Arrive: unless specifically stated otherwise, the relative cloth of the parts illustrated the most in these embodiments and step Put, numerical expression and numerical value are not intended to scope of the present utility model.

Description only actually at least one exemplary embodiment is illustrative below, never makees For to this utility model and application thereof or any restriction of use.

May not beg in detail for technology, method and apparatus known to person of ordinary skill in the relevant Opinion, but in the appropriate case, described technology, method and apparatus should be considered a part for description.

Shown here with in all examples discussed, any occurrence should be construed as merely example Property rather than as limit.Therefore, other example of exemplary embodiment can have different Value.

It should also be noted that similar label and letter represent similar terms, therefore, one in following accompanying drawing A certain Xiang Yi the accompanying drawing of denier is defined, then need not it is carried out further in accompanying drawing subsequently Discuss.

This utility model is for the problem solving to simplify electroacoustic transducer processing technology, it is provided that Yi Zhongxin Electroacoustic transducer structure, this electroacoustic transducer specifically will be provided for connect voice coil leads connection Shell fragment with formed after the acoustic aperture that goes out of the operatic tunes combine, simultaneously by shell fragment will be connected with shell respectively Separately formed laggard luggage is joined fixing, connects shell fragment and uses embedded assembling, compared in prior art For the integrated injection molding of shell, it is possible to effectively simplify the processing technology of shell, save production cost.

Here, for the ease of being fully understood from connecting shell fragment and the effect going out acoustic aperture of the rear operatic tunes, below 1 to Fig. 3 illustrates the overall structure of electroacoustic transducer with reference to the accompanying drawings, e.g. speaker or called The electroacoustic transducer of device mainly includes magnetic circuit system, vibrational system and aid system, wherein, auxiliary system System include the protecgulum 9 combined and shell 1, vibrational system and magnetic circuit system be then housed in by In the cavity that protecgulum 9 and shell 1 are surrounded；Magnetic circuit system mainly includes being fixedly connected on shell 1 Frame 3 and the centring magnet 4 that is fixedly connected on the bottom of frame 3, and in order to revise center magnetic The magnetic line of force that ferrum sends, this magnetic circuit system can also include the center being fixedly connected on centring magnet 4 Washer 5, forms the magnetic gap inserted for voice coil loudspeaker voice coil 6 between side of sidewall portion and the centring magnet 4 of this frame 3； Vibrational system mainly include the voice coil loudspeaker voice coil 6 being arranged in above-mentioned magnetic gap and fixing with voice coil loudspeaker voice coil 6 be connected shake Film 7, and in order to regulate the acoustical behavior of electroacoustic transducer, this vibrational system can also include fixing company The reinforcement part 8 being connected on vibrating diaphragm 7, wherein, vibrating diaphragm 7 is fixedly connected on shell 1 by its edge, neighboring Step surface on, and then the cavity of electroacoustic transducer be divided into there is the rear operatic tunes of voice coil loudspeaker voice coil 6 and with rear The front operatic tunes that the operatic tunes is relative.Based on said structure, the operation principle of electroacoustic transducer is: voice coil loudspeaker voice coil 6 exists To vibrate under the effect of magnetic circuit system when receiving audio signal, and then drive vibrating diaphragm 7 to vibrate and plan Dynamic surrounding air by front operatic tunes sounding, this require before the operatic tunes should arrange be in communication with the outside go out acoustic aperture, And for the balance purpose such as acoustic pressure, heat radiation, the rear operatic tunes be also required to arrange be in communication with the outside go out acoustic aperture. In order to by drive circuit externally connected for voice coil loudspeaker voice coil 6 to receive audio signal, above-mentioned aid system is also Including the connection shell fragment 2 being arranged on shell 1, voice coil loudspeaker voice coil 6 passes through voice coil leads 61 and is connected shell fragment 2 Be electrically connected with, so, when electroacoustic transducer is arranged on the equipment of e.g. mobile phone, by During installation, compression connection shell fragment 6 makes it in electrical contact with the connection terminal on equipment, can be changed by electroacoustic The voice coil loudspeaker voice coil 6 of energy device is connected in the drive circuit of equipment.

In order to realize of the present utility model connecting shell fragment be combined arranging with the acoustic aperture that goes out of the operatic tunes after formation Purpose together, as shown in Figures 1 to 12, the connection shell fragment 2 of this utility model electroacoustic transducer Including elastic sheet body 21 and the diversion division 22 that extends via elastic sheet body 21, this diversion division 22 is stretched Enter in the rear operatic tunes surrounded by vibrating diaphragm 7, shell 1 and frame 3, and this diversion division 22 and frame 3 it Between be formed such that the rear operatic tunes with the external world communicate go out acoustic aperture S, i.e. shape between frame 3 and diversion division 22 Becoming as the opening going out acoustic aperture S, this diversion division 22 can guide air-flow to enter and stream via going out acoustic aperture S Go out the rear operatic tunes.This utility model electroacoustic transducer can by two connect shell fragments 2 respectively formed one above-mentioned Go out acoustic aperture S, it is also possible to set up as required and go out acoustic aperture for connecting extraneous other with the rear operatic tunes, with After acquisition balance, the effect of each several part acoustic pressure in the operatic tunes, is formed such as altogether outside three or four connections Boundary goes out acoustic aperture with the rear operatic tunes, and this can be by the structure of opening reserved between frame 3 and shell 1 And/or set up other by the structure offering opening on the sidewall of shell 1 and go out acoustic aperture.

Owing to this utility model electroacoustic transducer defines at least part of of the rear operatic tunes by connecting shell fragment 2 Going out acoustic aperture, this substantially can save and additionally arrange this part and go out design and/or the operation of acoustic aperture, for mesh For front state of development, this kind of structure, also will relatively great Cheng by making the connection embedded assembling of shell fragment Degree ground simplifies the processing technology of electroacoustic transducer, reduces production cost.It addition, by connecting shell fragment 2 The diversion division 22 stretched in the rear operatic tunes forms out acoustic aperture, can be real by the guide functions of diversion division 22 The smooth and easy conducting of existing air-flow, and then be conducive to improving the performance of electroacoustic transducer.Furthermore, due to water conservancy diversion Portion 22 is positioned in the rear operatic tunes, and therefore, voice coil leads 61 can realize conveniently by diversion division 22 and connect Connect the electric connection between shell fragment 2.

For the ease of making frame 3 can be connected in shell fragment 2 formation with the fewest structural modification State out acoustic aperture S, in a specific embodiment of the present utility model, as shown in Figures 1 to 12, should Frame 3, on the basis of arranging bottom 31 and side of sidewall portion 32, is additionally arranged corner 33, wherein, the end Portion 31 connects centring magnet 4 for fixing, and side of sidewall portion 32 extends to the rear operatic tunes via bottom 31 bending In and form magnetic gap with centring magnet 4, corner 33 then via bottom 31 in adjacent two sides Indentation, there between wall portion 32 stretches out, and above-mentioned diversion division 22 is concrete and shape between corner 33 Become to make the rear operatic tunes with extraneous communicate go out acoustic aperture S, this illustrates out that acoustic aperture S is positioned at the corner of frame 3 Place, this kind of structure also has diversion division 22 without taking the space for arranging magnetic circuit system of the rear operatic tunes Effect, and then make magnetic circuit system can obtain maximized enforcement.This corner 33 can be with company Connect the configuration of shell fragment 2 one_to_one corresponding, it is also possible to the indentation, there at the most adjacent two side of sidewall portion 32 is respectively provided with this Corner 33, to ensure the integrally-built symmetry of frame 3.This corner 33 can be simply by Bottom indentation, there flattening between adjacent two side of sidewall portion 32,31 are formed, it is also possible to by frame Base material carries out the technique such as stamping-out, line cutting and is formed.Owing to this embodiment is the base at frame existing structure On plinth, the gap position between adjacent two side of sidewall portion 32 is utilized to be provided for being formed out the limit of acoustic aperture S Corner 33, therefore, it can obtain this utility model electroacoustic transducer with minimum structural modification.

On the basis of above-mentioned frame 3, for the ease of carry out frame 3 opposite shell 1 location and/ Or connect, in a specific embodiment of the present utility model, as shown in Fig. 7 to Figure 12, shell 1 Inwall on be provided with the supporting part 12 of corresponding each corner 33, so that frame 3 passes through corner 33 are supported on supporting part 12, and further, this frame can be fixedly connected on by corner 33 and prop up On support part 12.Based on this kind of structure, the indentation, there at the most adjacent two side of sidewall portion 32 is respectively provided with this limit Corner 33, is beneficial to location and/or the connection of frame 3 opposite shell 1.

Above-mentioned diversion division 22 can need to be set to arbitrary shape according to water conservancy diversion direction, for example with The structures such as arc deflector, L-type deflector, in a specific embodiment of the present utility model, as Shown in Fig. 4 to Fig. 8, this diversion division 22 include the bottom training wall 221 relative with corner 32, And bend two the side training walls 222 extended, and two towards corner 32 via bottom training wall 331 Individual side training wall 222 sets up the both sides going out acoustic aperture S in correspondence, i.e. air-flow separately will be essentially by by two sides Gas channel that training wall 22, bottom training wall 331 and corresponding sides corner 33 surround and with this air-flow What passage communicated go out acoustic aperture S circulates, and this kind of diversion division structure is advantageously implemented multi-faceted water conservancy diversion Effect.In this embodiment, as shown in Figure 9 and Figure 10, voice coil leads 61 such as can be with respective side Connect shell fragment 2 bottom training wall 331 bottom surface be electrically connected with.

For the ease of the connection location being attached between shell fragment 2 and shell 1, of the present utility model In one specific embodiment, as shown in Figures 1 to 4, this elastic sheet body 21 include fixed part 211, Revers turn part 212 and elastic arm portion 213, this elastic arm portion 213 is specifically via revers turn part 212 and fixed part 211 Accepting, this revers turn part 212 can obtain the effect increasing elastic arm portion 213 elastic force effect, this fixed part 211 and the surface laminating of a part and shell 1 of revers turn part 212, the surface tool of this explanation shell 1 There is the imitated structure matched with fixed part 211 and revers turn part 212, and then be capable of connecting shell fragment 2 on shell 1 accurate, quickly position.

In order to prevent infinity ground under unpredictable External Force Acting, the elastic arm portion 213 connecting shell fragment 2 Away from fixed part 211, in turn result in or accelerate to connect the damage of shell fragment 2, of the present utility model In one specific embodiment, as shown in Figures 1 to 4, this elastic sheet body 21 also includes via fixed part End towards elastic arm portion 213 bending extend limiting section 214, this limiting section 214 be provided with for Limit the spacing elongated hole 214a of the movement travel in elastic arm portion 213；Accordingly, the end in this elastic arm portion 213 End forms positive stop hook 213a, and this positive stop hook 213a penetrates in spacing elongated hole 214a, with by spacing Interaction between elongated hole 214a and positive stop hook 213a, limits elastic arm portion 213 away from fixed part 211 Extreme position.On this basis, elastic arm portion 213 also can be made the most i.e. to be limited in This extreme position, even if elastic sheet body 21 is in compressive state all the time, to provide suitable pretightning force, And then improve the contact force connected between terminal of elastic sheet body 21 and equipment.Here, people in the art Member is it should be appreciated that the length of this spacing elongated hole 214a should make the elastic arm portion 213 can be along close The direction of fixed part 211 arrives the operating position after pressure.

When two connection shell fragments of electroacoustic transducer all use the structure of above-mentioned connection shell fragment 2, can make Formed between diversion division 22 and the frame 3 of each connection shell fragment 2 goes out acoustic aperture S, length in frame 3 On degree direction, (namely on length direction of voice coil loudspeaker voice coil 6 and vibrating diaphragm 7) is the most right, with the operatic tunes after enhancing balance The effect of both sides air pressure.

In this utility model electroacoustic transducer, above-mentioned connection shell fragment 2 such as can use bonding, conduct Insert injection moulding on shell 1, the means such as welding be fixedly connected on shell 1, in the prior art, This connection shell fragment 2 is mainly by being fixedly connected on shell as insert injection moulding means on shell 1 On 1.In order to simplify the processing technology of this utility model electroacoustic transducer further, this utility model is adopted It is fabricated separately with shell 1 with connecting shell fragment 2, and is connected fixing for connection shell fragment 2 by interface arrangment Attachment structure on shell 1, to this end, in a specific embodiment of the present utility model, such as figure Shown in 1 to Figure 12, this connection shell fragment 2 still further comprises the bullet extended via elastic sheet body 21 Property claw, accordingly, the draw-in groove that shell 1 is provided with and elastic card claw is adaptive, this elastic card claw is with right Answering draw-in groove clamping to form barb structure, this barb structure is arranged to limit corresponding elastic card claw from correspondence Deviating from draw-in groove, specifically, elastic card claw is arranged by elastic deformation and embeds in corresponding draw-in groove, And form this barb structure by recovery elastic deformation with draw-in groove after embedding in draw-in groove, here, this bullet Property claw can be arranged as required to as variously-shaped, such as hook type, U-shaped, V-type etc..

It is connected at realize being connected between shell fragment 2 with shell 1 fixing of coordinating utilizing elastic card claw and draw-in groove Embodiment in, as shown in Fig. 4 to Figure 12, preferably connection shell fragment 2 is set to by a bullet Property claw 23a form above-mentioned diversion division 22, to obtain while shell fragment 2 structure with outer simplifying to connect Adhesion bigger between shell 1.Based on this kind of structure, above-mentioned have bottom training wall 221 and two Another beneficial effect of the diversion division 22 of side training wall 222 is then for being suitable as an elastic card claw 23a and firm adhesion is provided, realize elastic card claw 23 specifically by two side training walls 222 Effect.In the embodiment of Fig. 4 to Figure 12, this connection shell fragment 2 be provided with two elastic card claw 23a, 23b, one of them elastic card claw 23a define diversion division 22, and shell 1 is provided with corresponding elastic card The draw-in groove 11a and the draw-in groove 11b of corresponding another elastic card claw 23b of pawl 23a, wherein, draw-in groove 11a at least forms barb structure with one of them side training wall 222, and specifically, this draw-in groove 11a has There is the cell wall fitted respectively with two side training walls 222, and, it is right that at least one cell wall forms restriction Answer the inclined-plane that side training wall 222 is deviate from from draw-in groove 11a, so by squeeze side training wall 222 with Inclined surface fits and forms barb structure.Further, for the ease of by External Force Acting by bullet Property claw 23a, 23b install to corresponding draw-in groove 11a, 11b, this shell 1 can also arrange use In guiding elastic card claw 23a, 23b to embed guiding surface 13a, the 13b in corresponding draw-in groove 11a, 11b, In the embodiment of Fig. 4 to Figure 12, it is provided with for guiding elastic card claw 23a to embed in draw-in groove 11a Guiding surface 13a and guiding for guiding another elastic card claw 23b to embed in draw-in groove 11b oblique Face 13b.Here, preferably only the elastic card claw 23a as diversion division 22 is arranged in the rear operatic tunes, And remaining elastic card claw 23b is arranged at the outside of electroacoustic transducer, this can not only reduce rear Taking of the space for arranging magnetic circuit system of the operatic tunes, is also convenient for operator and assembles.

The various embodiments described above primary focus describes and the difference of other embodiments, but art technology Personnel are it should be understood that, the various embodiments described above can be used alone as required or be combined with each other makes With.

Although specific embodiments more of the present utility model being described in detail by example, but Being to it should be appreciated by those skilled in the art, example above is merely to illustrate rather than in order to limit Scope of the present utility model.It should be appreciated by those skilled in the art, can be without departing from model of the present utility model Enclose with spirit in the case of, above example is modified.Scope of the present utility model is wanted by appended right Ask and limit.

Claims (10)

1. an electroacoustic transducer, there is shell (1), the connection shell fragment (2) being fixedly connected on described shell (1), the vibrating diaphragm (7) being fixedly connected on described shell (1), and the frame (3) being fixedly connected on described shell (1), wherein, described vibrating diaphragm (7), described shell (1) and described frame (3) surround the rear operatic tunes of described electroacoustic transducer jointly, it is characterized in that, described connection shell fragment (2) includes elastic sheet body (21), and the diversion division (22) extended via described elastic sheet body (21), described diversion division (22) stretches in the described rear operatic tunes, and between described diversion division (22) and described frame (3), it is formed such that the described rear operatic tunes goes out acoustic aperture (S) with the external world communicates.

Electroacoustic transducer the most according to claim 1, it is characterized in that, described frame (3) includes bottom (31), side of sidewall portion (32) and corner (33), centring magnet (4) operatic tunes in the rear of described electroacoustic transducer is fixedly connected on described bottom (31), described side of sidewall portion (32) extends in the described rear operatic tunes via described bottom (31) bending, and form magnetic gap with described centring magnet (4), described corner (33) stretches out via described bottom (31) indentation, there between adjacent two side of sidewall portion (32)；Described diversion division (22) concrete be formed such that between described corner (33) the described rear operatic tunes with extraneous communicate go out acoustic aperture (S).

Electroacoustic transducer the most according to claim 2, it is characterized in that, being provided with the supporting part (12) of corresponding each described corner (33) on the inwall of described shell (1), described frame (3) is supported on described supporting part (12) by described corner (33).

Electroacoustic transducer the most according to claim 2, it is characterized in that, described diversion division (22) includes the bottom training wall (221) relative with described corner (33) and two the side training walls (222) extended via described bottom training wall (221) towards described corner (33) bending, and said two side training wall (222) sets up the both sides going out acoustic aperture (S) in correspondence separately.

Electroacoustic transducer the most according to claim 1, it is characterized in that, described elastic sheet body (21) includes fixed part (211), revers turn part (212) and elastic arm portion (213), described elastic arm portion (213) is accepted with described fixed part (211) via described revers turn part (212), the surface laminating of a part for described fixed part (211) and described revers turn part (212) and described shell (1).

Electroacoustic transducer the most according to claim 5, it is characterized in that, described elastic sheet body (21) also includes the limiting section (214) that the end via described fixed part (211) extends towards the bending of described elastic arm portion (213), and described limiting section (214) is provided with the spacing elongated hole (214a) of the movement travel for limiting described elastic arm portion (213)；The end of described elastic arm portion (213) forms positive stop hook (213a), and described positive stop hook (213a) penetrates in described spacing elongated hole (214a).

Electroacoustic transducer the most according to claim 1, it is characterised in that described electroacoustic transducer has two described connection shell fragments (2), and after the molding respectively of described connection shell fragment (2) and described shell (1), assembling is fixing；Acoustic aperture (S), the most right on the length direction of described frame (3) is gone out described in being formed between diversion division (22) and the described frame (3) of each described connection shell fragment (2).

Electroacoustic transducer the most according to any one of claim 1 to 7, it is characterized in that, described connection shell fragment (2) also includes the elastic card claw (23a extended via described elastic sheet body (21), 23b), described shell (1) is provided with and described elastic card claw (23a, 23b) adaptive draw-in groove (11a, 11b), described elastic card claw (23a, 23b) with corresponding draw-in groove (11a, 11b) clamping forms barb structure, described barb structure is arranged to limit corresponding elastic card claw (23a, 23b) from corresponding draw-in groove (11a, abjection in 11b).

Electroacoustic transducer the most according to claim 8, it is characterised in that described connection shell fragment (2) is arranged by a described elastic card claw (23a, 23b) and forms described diversion division (22).

Electroacoustic transducer the most according to claim 8, it is characterized in that, described shell (1) is additionally provided with for guiding described elastic card claw (23a, 23b) to embed the guiding surface (13a, 13b) in corresponding draw-in groove (11a, 11b).