CN206879090U - Acoustic-electric conversion equipment and audio frequency apparatus - Google Patents

Abstract

The utility model discloses a kind of acoustic-electric conversion equipment and audio frequency apparatus, and the acoustic-electric conversion equipment includes：Housing, the housing have relative roof and bottom wall；And armature, magnetic part, armature support component and coil in the housing；The armature support component supports the armature between the coil and the magnetic part；The coil has the magnetic core being arranged in the coil channel；The armature extends to the magnetic part from the magnetic core, and the armature is supported by the armature support part；Wherein, the magnetic part forms the gap passed through by the armature；The length direction of the coil is not parallel through the direction in the gap with the armature.Acoustic-electric conversion equipment and audio frequency apparatus provided by the utility model help to lift packaging efficiency.

Description

Acoustic-electric conversion equipment and audio frequency apparatus

Technical field

It the utility model is related to field of acoustics, more particularly to a kind of acoustic-electric conversion equipment and audio frequency apparatus.

Background technology

Various types of microphones and receiver (transducer) have been used for many years.In these devices, it is different electrical Part is all installed together in shell or component.For example, receiver generally includes coil, magnet, armature and other parts, And these parts are all installed in receiver shell, and they together form magnetic path.Other types of acoustic apparatus It may include other types of part.Wherein, transducer can be used in a variety of applications of such as audiphone or earphone etc.May be used also In such as wearable device, these devices are used in the other application of personal computer or cell phone etc.

From the above, existing receiver architecture is as shown in figure 1, the receiver of the structure is carried out automatically by manipulator Packaging efficiency is relatively low when changing assembling.

Utility model content

As shown in fig.1, the bottom plate of the coil (coil) and housing (not shown) of existing receiver be arranged in parallel, meanwhile, Armature (reed) needs (armature extension from horizontal direction when installing each component through coil inner chamber and the gap of magnet Direction) armature is inserted in coil inner chamber, and to ensure position of the armature in coil inner chamber, this allows for manipulator automatic Not only to ensure the precision of coil and armature horizontal direction when changing assembling, and to ensure the precision of vertical direction, to automation The required precision of assembling is high, therefore causes packaging efficiency low.

In addition, existing receiver, in assembling, coil and armature needs level are put into receiver shell, and other assemblies (magnet, yoke, vibrating diaphragm etc.) can be put into housing vertically, therefore causes make it that assembling procedure is complex in assembling, this It equally have impact on packaging efficiency.

In order to solve the above technical problems, the application provides a kind of electroacoustic transducer, including：

Housing, the housing have relative roof and bottom wall；And

Armature, magnetic part, armature support component and coil in the housing；The coil, which has, to be set Magnetic core in the coil channel；

The armature extends to the magnetic part from the magnetic core, also, the armature is by the armature support component It is supported between the coil and the magnetic part；The armature support component does not have magnetic relative to the armature；

A part for the armature is arranged in the gap that the magnetic part is formed, wherein, the length side of the coil It is not parallel to the direction in the gap is passed through with the armature.

Preferably, in addition to the coil positioning convex that is arranged in the housing；Wherein, the raised prevention is positioned at described The movement of coil in housing.

Preferably, the end of the magnetic core connects the bottom wall of the housing.

Preferably, the armature and the magnetic core are the integrated formed structure with three crooked positions.

Preferably, the magnetic core extends through the bottom wall of the housing and connects the outer surface of the bottom wall.

Preferably, the armature and the magnetic core are the integrated formed structure with four crooked positions.

Preferably, one end of the magnetic core is directly connected to the bottom wall, wherein, the armature, the magnetic core and part institute State bottom wall and form magnetic path.

Preferably, one end that the armature extends close to the gap by one end away from the gap has at least two Individual bending part.

Preferably, the permeability of the armature support component is smaller than the permeability of the armature at least 1000 times.

Preferably, the housing has the side wall between the roof and bottom wall；Have in the side wall and PCB is set The opening of plate.

In the utility model, the acoustic-electric conversion equipment sets the length direction of coil and armature to pass through the side in shown gap To not parallel, the installation accuracy that need not can ensure when mounted between coil and armature is arranged such, only needs armature and coil Between can form magnetic path, so as to need not be carried out when install coil it is horizontal and it is vertical accurately control, so as to have Beneficial to the raising of packaging efficiency.

With reference to following explanation and accompanying drawing, particular implementation of the present utility model is disclose in detail, specifies this practicality New principle can be in a manner of adopted.It should be understood that embodiment of the present utility model in scope not thus by Limitation.In the range of the spirit and terms of appended claims, embodiment of the present utility model includes many changes, modifications With it is equivalent.

The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more Used in individual other embodiment, it is combined with the feature in other embodiment, or substitute the feature in other embodiment.

It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when being used herein, but simultaneously It is not excluded for the presence or additional of one or more further features, one integral piece, step or component.

Brief description of the drawings

, below will be to implementing in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art The required accompanying drawing used is briefly described in mode or description of the prior art, it should be apparent that, drawings in the following description Only some embodiments of the present utility model, for those skilled in the art, do not paying creative labor Under the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the motor explosive view of receiver of the prior art；

Fig. 2 is the acoustic-electric conversion equipment sectional view that a kind of embodiment of the application is provided；

Fig. 3 is Fig. 2 explosive view；

Fig. 4 is Fig. 2 top view；

Fig. 5 is the acoustic-electric conversion equipment sectional view that the application another embodiment is provided；

Fig. 6 is the acoustic-electric conversion equipment sectional view that the application another embodiment is provided.

Embodiment

In order that those skilled in the art more fully understand the technical scheme in the utility model, below in conjunction with this reality With the accompanying drawing in new embodiment, the technical scheme in the utility model embodiment is clearly and completely described, shown So, described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Based on this Embodiment in utility model, the institute that those of ordinary skill in the art are obtained on the premise of creative work is not made There is other embodiment, should all belong to the scope of the utility model protection.

It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ", For illustrative purposes only, it is unique embodiment to be not offered as " right side " and similar statement.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to technology of the present utility model The implication that the technical staff in domain is generally understood that is identical.It is simply in term used in the description of the present utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term as used herein "and/or" bag Include the arbitrary and all combination of the Listed Items of one or more correlations.

Fig. 2 to Fig. 4 is referred to, a kind of acoustic-electric conversion equipment provided for a kind of embodiment of the utility model, the acoustic-electric Conversion equipment includes：Housing 1, the housing 1 have roof 11 and bottom wall 12；And armature 2, magnetic in the housing 1 Property part 3 and coil 4；The magnetic part 3 is formed with gap 31；The armature 2 passes through the gap 31；The coil 4 Length direction and the armature 2 through the gap 31 direction it is not parallel.

In the present embodiment, housing 1 has roof 11 and bottom wall 12, wherein, roof 11 is oppositely arranged with bottom wall 12. As shown in Fig. 2 it can be in rectangular shape that the housing 1 is overall, there can be side wall between roof 11 and bottom wall 12, so as to enclose structure Into the receiving cavity with rectangular shape, the electric machine assemblies such as coil 4, armature 2, magnetic part 3 are accommodated whereby.

Specifically, two side walls with larger area of the roof 11 with bottom wall 12 for the rectangular shape housing 1, housing Vibrating diaphragm 9 can also be accommodated in 1, ante-chamber can be formed between vibrating diaphragm 9 and roof 11, can be formed between vibrating diaphragm 9 and bottom wall 12 Back cavity, wherein, above-mentioned electric machine assembly may be housed in back cavity.

For ease of providing electric current to coil 4, the pcb board 8 being electrically connected with coil 4 can be provided with housing 1.For ease of peace Fill the pcb board 8, housing 1 is provided with the opening 14 for setting the pcb board 8, and as shown in Figure 2 and Figure 3, the shape of the opening 14 can be with Pcb board 8 matches, and pcb board 8 is fixedly connected on the surface of coil 4, and the pcb board 8 can block the opening 14 so as to housing 1 forms closed cavity.

For ease of the positioning of pcb board 8, facilitate the installation of PCB and coil 4, housing 1, which has, positions coil 4 within the case 1 And the projection 10 for preventing coil 4 and pcb board 8 from moving.The projection 10 protrudes from the inner surface of housing 1, and its particular location can be with Positioned at the position for the thickness of 14 1 pcb board 8 that is open apart from housing 1.As shown in Fig. 2 the projection 10 can pass through opening in pcb board 8 14 (at least part) enter it is spacing by the projection 10 when being installed in housing 1, so as to know that pcb board 8 has been installed on correct position Put, due to pcb board 8 with coil 4 to be fixedly connected, so as to which the accurate positioning of coil 4 can be ensured whereby.Simultaneously as should be (fixed Position) projection 10 presence, the movement of coil 4 and pcb board 8 is prevented from, and improves the stability of total.

In the present embodiment, the projection 10 can be an individual component by being connected on the inwall of housing 1, can also For the structure of projection 10 being integrated with the inner surface of housing 1, it is preferred that the positioning convex 10 is structure as a whole with housing 1, and it passes through Punch forming.Specifically, there are two relative long side walls 13 and two relative short sides between bottom wall 12 and roof 11 Wall, opening 14 are arranged on a short side wall, and the inner surface of two relative long side walls 13 leads to close to the position of the opening 14 Cross punch forming and state positioning convex 10.

In the present embodiment, coil 4 has passage 41 (being referred to as inner chamber)；The length of the passage 41 along coil 4 Direction penetrates the coil 4.Preferably, the passage 41 is cylindrical channel 41.Have in the passage 41 of the coil 4 magnetic core 20 ( It is properly termed as bobbin), the magnetic core 20 can be stretched into the passage 41 of coil 4 for armature 2 and formed, and now, magnetic core 20 is one with armature 2 Body structure.In addition, as shown in figure 5, magnetic core 20 and armature 2 are Split type structure, the two is connected with each other (such as welding) so as to transmit Magnetic induction line (or magnetic field).Wherein, the length direction of coil 4 is similarly the length direction of its upper channel 41, is similarly magnetic core 20 Length direction.

In present embodiment, magnetic part 3 is formed with the gap 31 that (or through) is set for part armature 2, specifically, magnetic Property part 3 be two pieces of magnet 3a with regular texture (such as square shape, rectangular shape), two pieces of magnet 3a can be with It is oppositely arranged under the support of supporting construction (being referred to as yoke 6) and forms gap 31 between.

Acoustic-electric conversion equipment in present embodiment receives pumping signal when carrying out sounding, by the coil 4 of motor and (swashed Signal is encouraged generally to transmit in the form of electric current), and move armature 2 under the collective effect of magnetic part 3, armature 2 can lead to Crossing connecting pin 7 drives vibrating diaphragm 9 to vibrate, and then forms sound, and can be exported sound by the voice output port of housing 1.

Specifically as shown in figure 3, coil 4 can have a passage 41 penetrated along its length, the passage 41 Magnetic core 20 inside be may be provided with to form magnetic path (magnetic circuit) with armature 2.Coil 4 can be with input current (pumping signal), alternating magnetic field is produced when electric current flows through coil 4 in armature 2, then armature 2 is formed in magnetic part 3 Connecting pin 7 is driven to move under magnetic fields, so as to produce desired sound.

Certainly, the example above is only that present embodiment is applied to the example of audiphone, and the application is not restricted to this, For example the electro-acoustic conversion device in present embodiment can also be applied to earphone, microphone etc..

In the present embodiment, the acoustic-electric conversion equipment sets the length direction of coil 4 and armature 2 to pass through shown gap 31 Direction it is not parallel, be arranged such the installation accuracy that need not can ensure when mounted between coil 4 and armature 2, only need armature 2 Magnetic path can be formed between coil 4, so as to which horizontal and vertical accurate control need not be carried out when installing coil 4 System, so as to be advantageous to the raising of packaging efficiency.

In multiple embodiments as shown in Figures 2 to 6, the length direction of the coil 4 can be worn with the armature 2 The direction for crossing the gap 31 is mutually perpendicular to.Now as can be seen that coil 4 is erect on bottom wall 12, this allows for pacifying Install coil 4 when vertically (roof 11 to the direction of bottom wall 12) can be installed on bottom wall 12, and armature 2 can also be with same The direction of sample passes through or connected coil 4 (or other positions), because other assemblies (such as magnetic part 3) can also be vertically Installed, therefore the acoustic-electric conversion equipment can be assembled vertically in assembling, without in assembling process transfer Direction is changed, so as to which packaging efficiency is substantially improved.

Also, the assembling of the acoustic-electric conversion equipment of the structure can be assembled by robotic, without setting The auxiliary mounting assembly such as fixture is put, not only lifts packaging efficiency, and save assembly cost.

In given accompanying drawing illustrated embodiment, coil 4 is vertically-mounted.Specifically, the end face of coil 4 can be direct Or be installed on indirectly on bottom wall 12, wherein, can be bonded by glue between the end face of coil 4 and bottom wall 12, so as to by line Circle 4 is fixed.Under such structure, bottom wall 12 can be with horizontal positioned in the case of automatic assembling, and coil 4 can fix peace from top to down On inner surface loaded on bottom wall 12, meanwhile, without other septs between coil 4 and bottom wall 12, be advantageous to improve the integrated of device Degree and miniaturization.

In other embodiment (not shown), it can be connected indirectly between the end face of the coil 4 and bottom wall 12, such as Assembling for convenience of coil 4 and the structure for adapting to electric machine assembly, other assemblies (such as installing plate, peace are fixed with bottom wall 12 Fill support), the end face of coil 4 can be by being installed in the other assemblies, and then is fixed on indirectly on bottom wall 12.

In one embodiment, when the gap 31 of the length direction of coil 4 and magnetic part 3 is not parallel, one end of coil 4 Difference in height, or length side of the armature 2 along coil 4 occurs apart from the height of bottom wall 12 with armature 2 in height apart from bottom wall 12 It is not desired position or state to the position or state for extending into gap 31.

Based on the consideration, by ensure armature 2 be located at magnetic part 3 position in formation gap 31 it is accurate, armature 2 is at it There are multiple bending parts 21 (bends) on bearing of trend.Electricity can be easy to when armature 2 and coil 4 are not parallel by being arranged such Pivot 2 forms magnetic induction line direction perpendicular to magnetic part 3 in non-vibrational state lower edge and passes through gap 31, and then in coil 4, armature Preferably magnetic path is established between 2 and magnet 3a.

In the implementation shown in fig. 5, the armature 2 is from one end 25 away from the gap 31 between described Pass through bending at least twice during one end extension of gap 31.Now, the armature 2 is from one end 25 away from the gap 31 to close There are at least two bending parts 21, armature 2 often passes through a bending part 21, armature 2 between the one end 26 in the gap 31 Certain change occurs for bearing of trend.For ease of processing, and consider that (or armature 2 is through gap 31 for vertical coil 4 and gap 31 Direction) vertically, the bending angle of each bending part 21 of the armature 2 (can have ± 10 ° to float in practice for 90 degree It is dynamic, vertical with magnetic direction when entering gap 31 with armature 2 to be advisable), and in the fillet of bending part 21 processing.

It should be noted that do not limit in this application armature 2 width (perpendicular to the bearing of trend of armature 2, Armature 2 extend when left and right directions) bending situation, i.e. armature 2 width can have deformation (be stamped and formed out or roll over Bending into etc.), do not do any restriction in present embodiment.

In the implementation shown in fig. 5, the mode of the end face of coil 4 installation can also be direct by the end of magnetic core 20 Or the bottom wall 12 of housing 1 is connected indirectly.Wherein, it is contemplated that magnetic core 20 can be permeability magnetic material, and the end of magnetic core 20 can lead to The bottom wall 12 for being fixedly welded on housing 1 is crossed, so as to preferably stability.In other embodiment, the end of magnetic core 20 As described above by being installed in other assemblies, the bottom wall 12 of housing 1 can also be connected indirectly.

Please continue to refer to embodiment as shown in Figure 5, the armature 2 is directly connected to the bottom wall 12, now, the electricity Pivot 2, the magnetic core 20 and the part bottom wall 12 form magnetic path.Magnetic field transmission can be reduced by forming the magnetic path During magnetic resistance, the motion amplitude of armature 2 can be effectively ensured, and then beneficial to the tonequality of lifting sound output.In the implementation In mode, armature 2 can be that permeability magnetic material is formed with magnetic core 20 and at least part bottom wall 12.

In this embodiment, armature 2 and magnetic core 20 can be structure as a whole, and armature 2 stretches into the part of the passage 41 of coil 4 Magnetic core 20 is formed, and end is fixed on bottom wall 12.Wherein, armature 2 and magnetic core 20 have three bending parts 21, each folding Turn of bilge position 21 is in 90 degree of bendings.

In this embodiment, magnetic part 3 is extended to from coil 4 by three bending parts 21, armature 2 and magnetic core 20 With the first vertical component effect (magnetic core 20), first level portion, the second vertical component effect, the second horizontal part.Wherein, the first vertical component effect and second Vertical component effect is perpendicular to bottom wall 12 (inner surface), and first level portion and the second horizontal part are parallel to bottom wall 12, it can be seen that the armature The well-regulated bending construction of 2 tools, is easy to make, while can preferably adapt to the water that vertical coil 4 is formed with magnetic part 3 The difference in height in flat gap 31, also, in assembling, the armature 2 and magnetic core 20 equally can insert in coil 4 from top to down Row assembling, it is very beneficial for the raising of packaging efficiency.

Disturbed it should be noted that the assembling mode is not formed with the assembling of magnetic part 3, such as, magnetic part 3 One magnet 3a can be assembled first, be assembled after another magnet 3a above armature 2, can equally use side from top to down Formula.

In another embodiment as shown in Figure 6, armature 2 and magnetic core 20 can equally be structure as a whole, and magnetic core 20 can To extend through the bottom wall 12 of housing 1, and it is fixedly connected on the outer surface of bottom wall 12.Specifically, one end of the magnetic core 20 passes through The opening 14 of bottom wall 12 is extend into outside housing 1, and the outer surface of bottom wall 12 is fixedly connected with by bending, wherein, this is close to end The bending part 21 of position is in substantially 90 degree bendings, to be bonded the outer surface of bottom wall 12.Relative to the embodiment shown in Fig. 2, Armature 2 and magnetic core 20 in the embodiment have four bending parts 21.Coil 4 and armature 2 can be carried out when mounted The end bending that armature 2 is stretched out to housing 1 after assembling is fixed.

It should be noted that armature 2 and magnetic core 20 and it is not limited in this application as above-mentioned integral structure, at other In embodiment, than as shown in figure 5, armature 2 and magnetic core 20 are Split type structure.When scope of readers is to Fig. 5, the lower end of armature 2 is consolidated Surely the inner surface of the bottom wall 12 of housing 1 is connected, the left end of armature 2 is welded in upper end, and armature 2 has two bendings from left end to right-hand member Position 21, and right-hand member passes through gap 31.

In embodiment as shown in Figures 2 to 4, armature support component 5 is provided with housing 1, the armature support component 5 Armature 2 is supported between coil 4 and magnetic part 3, is arranged such, armature 2 is formed in gap 31 in magnetic part 3 Positioning can be completed by the armature support component 5, it is accurate for the position between armature 2 and coil 4 so as to reduce The requirement of control, be advantageous to the raising of packaging efficiency.

Wherein, armature support component 5 is fixed on the inner surface of bottom wall 12, specifically, armature support component 5 is located at along vertical Directly between the direction armature 2 of bottom wall 12 and bottom wall 12, also, along the bearing of trend of armature 2 positioned at coil 4 and magnetic part 3 Between.The armature support component 5 can be structure as a whole with housing 1, such as, the armature support component 5 is prominent for base wall portion 12 Rise and formed.Or the armature support component 5 is fixed on bottom wall 12 by forms such as connections (such as welding, bonding).The armature The shape and structure of supporting member 5 can be square, cuboid or other regular shapes, generally more rectangular than as shown in Figure 3 Body；Certainly, the armature support component 5 can also be irregular shape, and the application is simultaneously not intended to be limited in any, and only needs armature support structure Part 5 can support armature 2, and armature 2 is positioned through gap 31.

Even electricity can not be transferred to avoid magnetic induction line from being exported to reduce by armature support component 5 when transmitting on armature 2 Pivot 2 is located at the part in gap 31, and then causes the mobile range of armature 2 small or irremovable problem, the armature support component 5 Permeability it is smaller than the permeability of the armature 2 at least 1000 times.Further, the armature support component 5 is non-magnetic material Material is formed.

A kind of embodiment of the application also provides a kind of audio frequency apparatus, and the audio frequency apparatus includes as above any embodiment institute The acoustic-electric conversion equipment stated.In the present embodiment, the acoustic-electric conversion equipment may be referred to the sound in any of the above-described embodiment Shape, structure and the function of electrical switching device, no longer repeat one by one in present embodiment.Specifically, the audio frequency apparatus bag Include at least one of earphone, audiphone.

Herein cited any digital value all include between lower limit to higher limit with the lower value of an incremented and The all values of upper value, the interval of at least two units between any lower value and any much higher value be present.For example, such as Fruit elaborates that the quantity of part or the value of process variable (such as temperature, pressure, time etc.) are from 1 to 90, preferably from 20 To 80, more preferably from 30 to 70, then purpose is to illustrate that such as 15 to 85,22 are also clearly listed in the specification arrives 68th, 43 to 51,30 to 32 is equivalent.For the value less than 1, it is 0.0001,0.001,0.01,0.1 suitably to think a unit. These are only intended to the example clearly expressed, it is believed that the numerical value enumerated between minimum and peak is possible to Combination is all expressly set forth in the specification in a similar manner.

Unless otherwise indicated, all scopes all include all numerals between end points and end points.It is used together with scope " about " or " approximation " be suitable for two end points of the scope.Thus, " about 20 to 30 " are intended to covering " about 20 to about 30 ", including at least the end points indicated.

All articles and reference disclosed, including patent application and publication, for various purposes by quoting knot Together in this.Describe the term " substantially by ... forms " of combination should include determined by element, composition, part or step and reality Other elements, composition, part or the step of the basic novel feature of the combination are not influenceed in matter.Using term "comprising" or " comprising " describes the combination of element here, composition, part or step it is also contemplated that substantially by these elements, composition, part Or the embodiment that step is formed.Here by using term " can with ", it is intended to which illustrate that " can with " include is described any Attribute is all optional.

Multiple element, composition, part or step can be provided by single integrated component, composition, part or step.It is alternative Ground, single integrated component, composition, part or step can be divided into multiple element, composition, part or the step of separation.It is used for The open "a" or "an" for describing element, composition, part or step is not said to exclude other elements, composition, part Or step.

It should be understood that above description is to illustrate rather than to be limited.By reading above-mentioned retouch State, many embodiments and many applications outside the example provided all will be aobvious and easy for a person skilled in the art See.Therefore, the scope of this teaching should not determine with reference to foregoing description, but should with reference to appended claims and this The four corner of the equivalent that a little claims are possessed determines.It is for comprehensive purpose, all articles and special with reference to including The disclosure of profit application and bulletin is all by reference to being incorporated herein.Theme disclosed herein is omitted in preceding claims Any aspect is not intended to abandon the body matter, also should not be considered as inventor the theme is not thought of as it is disclosed A part for utility model theme.

Claims (10)

1. A kind of 1. electroacoustic transducer, it is characterised in that including：

   Housing, the housing have relative roof and bottom wall；And

   Armature, magnetic part, armature support component and coil in the housing；The coil, which has, is arranged at institute State the magnetic core in coil channel；

   The armature extends to the magnetic part from the magnetic core, also, the armature is supported by the armature support component Between the coil and the magnetic part；The armature support component does not have magnetic relative to the armature；

   A part for the armature is arranged in the gap that the magnetic part is formed, wherein, the length direction of the coil with The armature is not parallel through the direction in the gap.
2. 2. electroacoustic transducer as claimed in claim 1, it is characterised in that：Also include the coil positioning being arranged in the housing It is raised；Wherein, the raised movement for preventing the coil in the housing.
3. 3. electroacoustic transducer as claimed in claim 1, it is characterised in that：The end of the magnetic core connects the bottom of the housing Wall.
4. 4. electroacoustic transducer as claimed in claim 1, it is characterised in that：The armature and the magnetic core are with three bendings The integrated formed structure at position.
5. 5. electroacoustic transducer as claimed in claim 1, it is characterised in that：The magnetic core extends through the bottom wall of the housing simultaneously Connect the outer surface of the bottom wall.
6. 6. electroacoustic transducer as claimed in claim 1, it is characterised in that：The armature and the magnetic core are with four bendings The integrated formed structure at position.
7. 7. electroacoustic transducer as claimed in claim 1, it is characterised in that：One end of the magnetic core is directly connected to the bottom wall, Wherein, the armature, the magnetic core and the part bottom wall form magnetic path.
8. 8. electroacoustic transducer as claimed in claim 1, it is characterised in that：The armature is extended by one end away from the gap There are at least two bending parts to one end close to the gap.
9. 9. electroacoustic transducer as claimed in claim 1, it is characterised in that：The permeability of the armature support component is than the electricity The permeability of pivot is small at least 1000 times.
10. 10. electroacoustic transducer as claimed in claim 1, it is characterised in that：The housing, which has, is located at the roof and bottom wall Between side wall；There is the opening for setting pcb board in the side wall.