CN209676469U - A kind of electro-acoustic conversion device - Google Patents

Abstract

The utility model embodiment provides a kind of electro-acoustic conversion device.The utility model embodiment increases the consistency for the sound that the first phonation unit and the second phonation unit issue, improves the integrated level of electro-acoustic conversion device by will at least partly the second phonation unit be placed in the first phonation unit.The volume of electro-acoustic conversion device can not be increased while improving the sound quality of electro-acoustic conversion device.Further, it is possible to simplify the structure of electro-acoustic conversion device.

Description

A kind of electro-acoustic conversion device

Technical field

The utility model relates to technical field of electronic products more particularly to a kind of electro-acoustic conversion devices.

Background technique

Electro-acoustic conversion device is the device for converting electrical current into Cheng Shengneng, and electro-acoustic conversion device can be Microspeaker, example Loudspeaker equipment in such as earphone, telelecture or smart phone, the electro-acoustic conversion device can be enclosed in or be integrated In the shell or shell of equipment where it.However, the sound quality of existing electro-acoustic conversion device need to be improved.

Utility model content

In view of this, the utility model embodiment provides a kind of electro-acoustic conversion device, the sound of the electro-acoustic conversion device Matter is capable of providing preferable sound quality.Electro-acoustic conversion device described in the utility model embodiment includes:

First phonation unit and the second phonation unit, at least partly described second phonation unit are located at the first sounding list It is first internal；

Wherein, first phonation unit is moving-coil unit, and second phonation unit is moving iron unit.

Further, it is formed with hole in first phonation unit, at least partly described second phonation unit is located at described Kong Zhong.

Further, the central axes in the hole, first phonation unit and second phonation unit essentially coincide.

Further, first phonation unit includes frame；

Hole is formed in the frame, at least partly described second phonation unit is located in the hole.

Further, the first end face of second phonation unit is higher than the first end face of the frame, second hair The second end face of sound unit and the second end face of the frame are substantially flush.

Further, the first end in the hole has cricoid retention bead；Second phonation unit includes first Divide and second part, the second part are located in the hole；

Wherein, the sectional dimension of the first part is less than the internal diameter of the retention bead, the second part Sectional dimension is greater than the internal diameter of the retention bead.

Further, the electro-acoustic conversion device includes front cover；

The front cover is in the top of first phonation unit, and the first end face of second phonation unit is described first Between phonation unit and the front cover.

Further, the front cover includes vocal hole；The first end face of second phonation unit is in the vocal hole Lower section.

Further, first phonation unit includes:

Frame, the first end face of the frame have cricoid groove, the second end face of the frame have with it is described First tuning mouth of groove connection；

Vibrating diaphragm is connect with the first end face of the frame, and forms the first cavity with the groove；

Voice coil, the voice coil is tubular structure, in the groove of the frame；

Magnet assembly, in the groove of the frame, region of the magnet assembly above the first tuning mouth With the second tuning mouth；

Tuning screen cloth connect with the frame and covers the first tuning mouth.

Further, the electro-acoustic conversion device includes pad；

The second end face of second phonation unit is connect with the partial region of the second end face of first phonation unit To the side of the pad.

The utility model embodiment increases by first by will at least partly the second phonation unit be placed in the first phonation unit The consistency for the sound that phonation unit and the second phonation unit issue, improves the integrated level of electro-acoustic conversion device.It can improve The volume of electro-acoustic conversion device is not increased while the sound quality of electro-acoustic conversion device.Further, it is possible to simplify electro-acoustic conversion device Structure.

Detailed description of the invention

By referring to the drawings to the description of the utility model embodiment, the above-mentioned and other mesh of the utility model , feature and advantage will be apparent from, in the accompanying drawings:

Fig. 1 is the sectional view of the electro-acoustic conversion device of the utility model embodiment；

Fig. 2-Fig. 5 is the appearance schematic diagram of the electro-acoustic conversion device of the utility model embodiment；

Fig. 6-Fig. 7 is the schematic diagram of the frame of the utility model embodiment；

Fig. 8 is the perspective exploded view of the electro-acoustic conversion device of the utility model embodiment.

Specific embodiment

The utility model is described below based on embodiment, but the utility model is not restricted to these implementations Example.It is detailed to describe some specific detail sections below in the datail description of the utility model.To those skilled in the art The utility model can also be understood completely in the description of part without these details for member.In order to avoid obscuring the utility model Essence, there is no narrations in detail for well known method, process, process, element and circuit.

In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and What attached drawing was not necessarily drawn to scale.

Unless the context clearly requires otherwise, "include", "comprise" otherwise throughout the specification and claims etc. are similar Word should be construed as the meaning for including rather than exclusive or exhaustive meaning；That is, be " including but not limited to " contains Justice.In the description of the present invention, unless otherwise indicated, " multilayer " is meant that two layers or two layers or more.

It should be understood that when element or layer be referred to " ... on ", " with ... it is adjacent ", " being connected to " or " being coupled to " it is other When element or layer, can directly on other elements or layer, it is adjacent thereto, be connected or coupled to other elements or layer, or There may be elements or layer between two parties by person.On the contrary, when element is referred to as " on directly existing ... ", " with ... direct neighbor ", " directly It is connected to " or " being directly coupled to " other elements or when layer, then there is no elements or layer between two parties.It for ease of description here can be with Using " ... under ", " ... below ", "lower", " ... on ", the spatial relation terms such as "upper" to be to describe such as attached drawing Shown in relationship between an elements or features and another (a little) elements or features.It should be appreciated that spatial relation term purport In the different orientation for summarizing the device of device in use or operation in addition to being orientated shown in attached drawing.For example, if in attached drawing Device turns, and the element for being described as " " other elements or feature " under " or " below " will be in other elements or spy " top " of sign.Therefore, exemplary term " ... below " can cover above and below two kinds orientation.Device can be adopted Other orientations (being rotated by 90 ° or in other orientations) are taken, are interpreted accordingly used herein of spatial relation description symbol.

The phonation unit of electro-acoustic conversion device is divided into two kinds by energy conversion regime: moving-coil unit and moving iron unit.Moving-coil Unit drives vibrating diaphragm sounding by the vibration of voice coil, and volume is larger, has good sound musicality and sound field effect；And dynamic iron list Member utilizes the vibration of balanced armature, is transmitted to vibrating diaphragm by accurate conducting structure, drives vibrating diaphragm sounding, compact, sensitivity Height has preferably sound stereovision and parsing power, the loudness of sound high frequency section can be made to increase.Therefore, in order to improve electricity Moving-coil unit and moving iron unit can be combined together by the sound quality of sound converting apparatus, so that the sound quality of electro-acoustic conversion device is imitated Fruit is more preferable.However, the volume that the scheme that existing moving-coil unit and moving iron unit combine will lead to electro-acoustic conversion device is excessive, and Existing technical solution will lead to the ante-chamber of electro-acoustic conversion device, back chamber channel design complexity, need to carry out structure optimization.

In view of this, the utility model embodiment provides a kind of electro-acoustic conversion device, electro-acoustic conversion device can be improved Sound quality, while not increasing the volume of electro-acoustic conversion device, and the internal structure of electro-acoustic conversion device can be simplified.

In the utility model embodiment, it is illustrated for forming the electro-acoustic conversion device inside earphone, it should be appreciated that Electro-acoustic conversion device can also be Microspeaker, loudspeaker or receiver in such as speakerphone speaker or smart phone, Or other similar compact electronic devices, such as laptop computer, notebook or tablet computer.The electro-acoustic conversion device It can be enclosed in or be integrated in the shell or shell of the equipment where it.

Fig. 1 is the sectional view of the electro-acoustic conversion device of the utility model embodiment.Fig. 2-Fig. 5 is the utility model embodiment Electro-acoustic conversion device appearance schematic diagram.As Figure 1-Figure 5, the electro-acoustic conversion device includes: 1 He of the first phonation unit Second phonation unit 2, at least partly described second phonation unit 2 are located inside first phonation unit 1.Wherein, described One phonation unit 1 is moving-coil unit, and second phonation unit 2 is moving iron unit.

Further, it is formed with hole 101 in first phonation unit 1, at least partly described second phonation unit 2 is located at In the hole 101.

At least partly the second phonation unit 2 is located inside first phonation unit 1, can preferably utilize space, reach To the effect for the volume for reducing electro-acoustic conversion device.Electro-acoustic conversion device is set to have the first phonation unit and the second phonation unit concurrently The volume of electro-acoustic conversion device is not increased simultaneously.

Further, the central axes in the hole 101, first phonation unit 1 and second phonation unit 2 are basic It is overlapped.

The central axes of first phonation unit 1 and second phonation unit 2 be overlapped enable to the first phonation unit 1 with And the sound that second phonation unit 2 issues has preferable consistency, can be improved the acoustical quality of earphone.Also, energy Enough simplify the dependency structures such as the cavity of acoustic-electric conversion equipment, improve production efficiency, reduces production cost.

As Figure 2-Figure 5, the shape of electro-acoustic conversion device is similar cylindrical, it is specific close to being combined by cylinder and circular cone and At shape.The shape of electro-acoustic conversion device can adapt to the shape of the shell of In-Ear Headphones in the present embodiment.

First phonation unit 1 includes frame 102, vibrating diaphragm 103, voice coil 104, magnet assembly 105, tuning screen cloth 106 And washer (Spring Washer) 107.The magnet assembly 105 is connected with frame 102, is used to form magnetic field.The voice coil 104 be the coil by electric current, after receiving current signal, is vibrated in magnetic field.The voice coil 104 drives vibrating diaphragm 103 to vibrate, Air and sounding are pushed repeatedly.

Specifically, it is formed with hole 101 in the frame 102, at least partly described second phonation unit 2 is located at the hole In 101.Further, the first end face 201 of second phonation unit 2 is higher than the first end face 1021 of the frame 102, institute The second end face 202 and the second end face 1022 of the frame 102 for stating the second phonation unit 2 are substantially flush.

Further, the first end in the hole 101 has cricoid retention bead 1011.Further, the limit convex Playing 1011 is circular ring shape, and the internal diameter of the retention bead 1011 is less than the internal diameter in hole 101.Second phonation unit 2 includes the A part 203 and second part 204, the second part 203 are located in the hole 101.Wherein, the first part 203 Sectional dimension is less than the internal diameter of the retention bead 1011, and the sectional dimension of the second part 204 is greater than the limit The internal diameter of protrusion 1011.Further, the lower surface of the retention bead 1011 to frame second end face 1022 away from The axial length on 204 edge of second part from substantially equal to described second phonation unit 2.The retention bead 1011 is to described Second phonation unit 2 plays the fixed effect of limit.

Fig. 6-Fig. 7 is the schematic diagram of the frame of the utility model embodiment.As shown in Figure 6 and Figure 7, the frame 102 First end face has cricoid groove 1023, has be connected to the groove 1023 first to adjust in the third end face of the frame Sound mouth 1024.The groove 1023 is circular ring shape.The voice coil 104, magnet assembly 105 and washer 107 are located at the groove In 1023.The first tuning mouth 1024 is the hole for ventilation, to adjust the sound quality of electro-acoustic conversion device.

Specifically, the frame 102 is the support member of first phonation unit 1, can be by the first phonation unit Each functional component is become one by frame 102.In the present embodiment, the frame 102 is as the first phonation unit 1 While support member, hole 101 is formed in frame 102, is mentioned for the second phonation unit 2 to be placed in the first phonation unit 1 For space.Meanwhile the frame 102 can also play the fixed effect of support to the second phonation unit 2.In electro-acoustic conversion device shape Electro-acoustic conversion device can be installed on the electronic equipment using the electro-acoustic conversion device by Cheng Hou by frame 102.In this reality It applies in example, the shape of frame 102 is similar cylindrical, specific close to the shape being composed of cylinder and circular cone.In the present embodiment The shape of frame 102 can adapt to the shape of the shell of In-Ear Headphones.

A part of end face of vibrating diaphragm 103 is connect with the first end face of the frame 102, and forms the with the groove 1023 One cavity.Vibrating diaphragm 103 is used to vibrate with the voice coil 101, pushes air to generate sound repeatedly.Further, vibrating diaphragm 103 is ring Shape.Further, the vibrating diaphragm 103 is circular ring shape.And the size of vibrating diaphragm 103 is corresponding with the size of groove 1023, vibrating diaphragm 103 outer diameter is slightly larger than the outer diameter of groove 1023, and the internal diameter of the vibrating diaphragm 103 is slightly less than the internal diameter of the groove 1023.At this In embodiment, the section of vibrating diaphragm 103 is double arches, and the position at 103 both ends of vibrating diaphragm is connected with frame, 103 middle position of vibrating diaphragm It is connect with voice coil 104.The vibrating diaphragm 103 of double arches can play the effect for improving electro-acoustic conversion device sound quality.

The first end face 201 of second phonation unit 2 is higher than the vibrating diaphragm 103.It is equivalent to second phonation unit 2 First end face 201 be higher than first phonation unit 1, enable to the voice signal of the second phonation unit 2 closer to human ear, Since the second phonation unit 2 is moving iron unit, increases the loudness of sound high frequency section, be able to ascend electroacoustic converting means on the whole The acoustical quality in high band set.

The voice coil 104 is the coil by electric current, after receiving current signal, in the magnetic field that magnet assembly 401 is formed Middle vibration.When current-carrying conductor passes through magnetic field, an electric power will receive, direction meets Fleming's left-hand rule, power and electricity Stream, magnetic direction are orthogonal, and stress size is directly proportional to electric current, conductor length, magnetic flux density.When voice coil 104 inputs alternation When tone currents, voice coil 104 just becomes current-carrying conductor and is generated alternate motion by an alternation motive force, drives vibrating diaphragm 103 Vibration pushes air and sounding repeatedly.The voice coil 104 can be tubular structure, wherein the section of the tubular structure can be with It is annulus, elliptical ring and straight-flanked ring etc..In the present embodiment, the section of the voice coil 104 be annulus, and voice coil 104 cut The diameter in face is less than the outer diameter of the groove 1023, greater than the internal diameter of the groove 1023.Voice coil 104 be located at groove 1023 it In.

The magnet assembly 105 is connected with frame 102, is used to form magnetic field.The magnet assembly 105 is adjusted described first The region of 1024 top of sound mouth has the second tuning mouth 1051.Second tuning mouth 1051 is corresponding with the first tuning mouth 1024 to be connected It is logical, for the gas outlet as the first phonation unit, to adjust the sound quality of electro-acoustic conversion device.

Tuning screen cloth 106 connect with the frame 102 and covers the first tuning mouth.

Washer 107 is used for fixed magnetic component 105.

The electro-acoustic conversion device includes front cover 3.Front cover 3 plays protection first phonation unit 1 and the second sounding list The effect of member 2.

The front cover 3 is in the top of first phonation unit 1, and the first end face 201 of second phonation unit 2 is in institute It states between the first phonation unit 1 and the front cover 3.Further, the front cover 3 includes vocal hole 301, the second sounding list The first end face 201 of member 2 is in the lower section of the vocal hole 301.Further, the vocal hole 301 and the second sounding list The central axes of member 2 essentially coincide.The first end face 201 of second phonation unit 2 is the main pars stridulans of the second phonation unit Position.By the first end face 201 of the second phonation unit 2 close to vocal hole 301, when electro-acoustic conversion device in earphone in use, energy Enough make the second phonation unit 2 closer to the ear canal of user, can be avoided leakage sound, improves the acoustical quality of acoustic-electric conversion equipment.

The electro-acoustic conversion device includes pad 4.The second end face 202 of second phonation unit 2 and first hair The partial region of the second end face of sound unit 1 is connected to the side of the pad 4.In an optional implementation manner, described Pad 4 cooperate the first phonation unit 1 frame 102 shape, pad 4 include first part and second part, first part and Second part intersection location has certain angle.Pad 4 can be conductor or flexible circuit board etc., for being electrically connected first Phonation unit 1 and the second phonation unit 2 have certain control circuit on pad 4, and pad 4 and the circuit of outside are electrically connected It connects, so that the first phonation unit and the second phonation unit are connected with external circuit.

Fig. 8 is the perspective exploded view of the utility model embodiment.As shown in figure 8, in a kind of optional implementation In, the electro-acoustic conversion device of the utility model embodiment includes: the first phonation unit 1, the second phonation unit 2, front cover 3 and welding plate 4.Wherein, at least partly the second phonation unit 2 is located in first phonation unit 1.Second phonation unit 2 and the first sounding list The center at the sounding position of member 1 essentially coincides.

First phonation unit 1 is moving-coil unit, and the first phonation unit 1 includes: frame 102, vibrating diaphragm 103, voice coil 104, magnetic Property component 105, tuning screen cloth 106 and washer 107.Wherein, magnet assembly 105 includes magnetic bowl 1052 and magnet 1051.

Hole is formed in first phonation unit 1.Specially there is hole among frame 102.Most of second phonation unit 2 is located at In the hole of first phonation unit 1, and the central axes of the first phonation unit 1, the second phonation unit 2 and the hole essentially coincide.The The central axes of one phonation unit 1 and second phonation unit 2 are overlapped and enable to the first phonation unit 1 and described second The sound that phonation unit 2 issues has preferable consistency, can be improved the acoustical quality of earphone.Further, it is possible to simplify acoustic-electric The dependency structures such as the cavity of conversion equipment improve production efficiency, reduce production cost.

Second phonation unit 2 is moving iron unit, and the second phonation unit 2 is transmitted to by the pitman of a precise structure The central point of one miniature vibrating diaphragm, so that the phonation unit of vibration and sounding is generated, in order to preferably show the utility model It is substantive, the internal structure of second phonation unit is not showed that in figure.

Frame of the front cover 3 in the top of first phonation unit 1 and the second phonation unit 2, with the first phonation unit 1 102 connections.Play the role of dust-proof, aggregation sound and protection first phonation unit 1 and the second phonation unit 2.

Welding plate 4 is bending-like, the frame 102 of patch and the first phonation unit 1, the first phonation unit 1 and the second phonation unit 2 It is connected respectively to the side of pad 4.Pad 4 can be conductor or flexible circuit board etc., for being electrically connected the first phonation unit 1 With the second phonation unit 2, there is certain control circuit on pad 4, and pad 4 is electrically connected with the circuit of outside, so that the One phonation unit and the second phonation unit are connected with external circuit.

The utility model embodiment increases by first by will at least partly the second phonation unit be placed in the first phonation unit The consistency for the sound that phonation unit and the second phonation unit issue, improves the integrated level of electro-acoustic conversion device.It can improve The volume of electro-acoustic conversion device is not increased while the sound quality of electro-acoustic conversion device.Further, it is possible to simplify electro-acoustic conversion device Structure.

It should be understood that in the utility model embodiment, with the central axes of the first phonation unit and the second phonation unit in attached drawing It is illustrated for essentially coinciding, in fact, the first phonation unit and the second phonation unit can also be other positions relationship, such as Second phonation unit can intersect with the central axes of the first phonation unit, is parallel or vertical.

It should be understood that the electro-acoustic conversion device in the utility model embodiment can also include the knot for being used to form sounding cavity Component, to further increase the audio of electro-acoustic conversion device.

It should be understood that the shape of the utility model embodiment electro-acoustic conversion device shown in the drawings is exemplary only, it is described The shape of electro-acoustic conversion device can be that the different shapes such as cuboid, cube and irregular shape herein with no restrictions can According to the application scenarios unrestricted choice of the electro-acoustic conversion device.

It should be understood that first phonation unit, the second phonation unit and the first phonation unit of composition and the second sounding list The structural member etc. of member can be adaptively adjusted according to the shapes and sizes of electro-acoustic conversion device, herein with no restrictions.

The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field For technical staff, the utility model can have various modifications and changes.All institutes within the spirit and principle of the utility model Any modification, equivalent substitution, improvement and etc. of work, should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of electro-acoustic conversion device, which is characterized in that described device includes:

First phonation unit and the second phonation unit, at least partly described second phonation unit are located in first phonation unit Portion；

Wherein, first phonation unit is moving-coil unit, and second phonation unit is moving iron unit.

2. the apparatus according to claim 1, which is characterized in that be formed with hole in first phonation unit, at least partly Second phonation unit is located in the hole.

3. the apparatus of claim 2, which is characterized in that the hole, first phonation unit and described second The central axes of phonation unit essentially coincide.

4. device according to claim 3, which is characterized in that first phonation unit includes frame；

Hole is formed in the frame, at least partly described second phonation unit is located in the hole.

5. device according to claim 4, which is characterized in that the first end face of second phonation unit is higher than the basin The second end face of the first end face of frame, the second end face and the frame of second phonation unit is substantially flush.

6. device according to claim 4, which is characterized in that the first end in the hole has cricoid retention bead；Institute Stating the second phonation unit includes first part and second part, and the second part is located in the hole；

Wherein, the sectional dimension of the first part is less than the internal diameter of the retention bead, the section of the second part Size is greater than the internal diameter of the retention bead.

7. the apparatus according to claim 1, which is characterized in that the electro-acoustic conversion device includes front cover；

The front cover is in the top of first phonation unit, and the first end face of second phonation unit is in first sounding Between unit and the front cover.

8. device according to claim 7, which is characterized in that the front cover includes vocal hole；Second phonation unit First end face in the lower section of the vocal hole.

9. the apparatus according to claim 1, which is characterized in that first phonation unit includes:

The first end face of frame, the frame has cricoid groove, has and the groove in the second end face of the frame First tuning mouth of connection；

Vibrating diaphragm is connect with the first end face of the frame, and forms the first cavity with the groove；

Voice coil, the voice coil is tubular structure, in the groove of the frame；

Magnet assembly, in the groove of the frame, region of the magnet assembly above the first tuning mouth has Second tuning mouth；

Tuning screen cloth connect with the frame and covers the first tuning mouth.

10. the apparatus according to claim 1, which is characterized in that the electro-acoustic conversion device includes pad；

The partial region of the second end face of second phonation unit and the second end face of first phonation unit is connected to institute State the side of pad.