CN206365025U - A kind of miniature electro-acoustic conversion equipment - Google Patents
A kind of miniature electro-acoustic conversion equipment Download PDFInfo
- Publication number
- CN206365025U CN206365025U CN201621406681.2U CN201621406681U CN206365025U CN 206365025 U CN206365025 U CN 206365025U CN 201621406681 U CN201621406681 U CN 201621406681U CN 206365025 U CN206365025 U CN 206365025U
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- magnetostriction
- housing
- plate
- coil
- acoustic conversion
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Abstract
The utility model discloses a kind of miniature electro-acoustic conversion equipment, diaphragm unit and coil including housing and in the cavity of housing, the outward flange of diaphragm unit and the madial wall of housing are connected, air chamber and rear gas chamber before the cavity of housing is divided into by diaphragm unit, preceding air chamber offers sound mouth, and coil is located in rear gas chamber, and the magnetostriction plate body that magnetostriction materials are made is equipped with coil, one end of magnetostriction plate body is connected with diaphragm unit, and the other end of magnetostriction plate body is connected with housing.Drive part of the present utility model is only coil and magnetostriction plate, simple in construction and space-consuming is smaller, the volume of rear gas chamber can be reduced as far as possible, so as to realize the miniaturization of electro-acoustic conversion device.
Description
Technical field
The utility model belongs to electro-acoustic conversion device field, is more particularly to a kind of miniature electro-acoustic conversion equipment.
Background technology
The drive part of existing electro-acoustic conversion device is all to obtain the armature of coil through helically coiling in two panels permanent magnetism
Vertical tremor is power in iron.The vibrations of armature are delivered to vibrations diaphragm by connecting rod, so as to agitate air to produce sound.
The part that the drive part of such a structure is included is more, and in order to accommodate these parts, the housing of electro-acoustic conversion device is necessary
With certain volume, this, which allows for electro-acoustic conversion device miniaturization, becomes more difficult.
Utility model content
The purpose of this utility model is to provide a kind of relatively simple miniature electro-acoustic conversion equipment of structure.
According to one side of the present utility model there is provided a kind of miniature electro-acoustic conversion equipment, including housing and it is located at
Diaphragm unit, coil in the cavity of the housing and the magnetostriction plate being made up of magnetostriction materials,
The outward flange of the diaphragm unit is connected with the madial wall of the housing, the diaphragm unit by the cavity of housing every
Into preceding air chamber and rear gas chamber, the preceding air chamber offers sound mouth,
The coil and magnetostriction plate are located in the rear gas chamber, and the magnetostriction materials are equipped with the coil
The magnetostriction plate body being made, one end of the magnetostriction plate body is connected with the diaphragm unit, the magnetostriction plate body
The other end be connected with the housing.
In some embodiments, the diaphragm unit includes film frame, diaphragm and the vibration plate being fitted and connected successively, described
The outward flange of film frame is pasted with the madial wall of the housing to be connected, and the film frame is provided with endoporus, the membrane covered residence
State the endoporus of film frame, the vibration plate is fitted in the both sides of the diaphragm with the film frame respectively, one side of the vibration plate with
The film frame is overlapping, and remaining side of the vibration plate is provided with space with the inner port edge of the film frame.
In some embodiments, the vibration plate is towards the coil, one end of the vibration plate and the magnetostriction plate
Connection.
In some embodiments, it is projection that the diaphragm, which is located at the part in the space,.
In some embodiments, the projection is towards rear gas chamber, and the raised cross section is U-shaped.
In some embodiments, the magnetostriction plate is not contacted with the coil.
Its advantage is：In the presence of the alternating magnetic field of coil, the magnetostriction plate that magnetostriction materials are made is long
Degree changes, when the length of magnetostriction plate, promotes vibration plate to move up, when the length of magnetostriction plate shortens
When, drive vibration plate to move down, so repeat, driving vibration, mobile vibration produces sound up and down, so that electroacoustic conversion
Work.Drive part of the present utility model is only coil and magnetostriction plate, simple in construction and space-consuming is smaller, can be subtracted as far as possible
The volume of few rear gas chamber, so as to realize the miniaturization of electro-acoustic conversion device.
Brief description of the drawings
Fig. 1 schematically shows a kind of section view signal of miniature electro-acoustic conversion equipment of the embodiment of the utility model one
Figure.
Embodiment
Fig. 1 schematically shows a kind of miniature electro-acoustic conversion equipment of embodiment of the present utility model.Such as Fig. 1 institutes
Show, the miniature electro-acoustic conversion equipment includes housing 1 and diaphragm unit 2 and coil 3 in the cavity of housing 1.
The outward flange of diaphragm unit 2 is connected with the madial wall of housing 1.The cavity of housing 1 is divided into preceding air chamber by diaphragm unit 2
11 and rear gas chamber 12.Specifically, diaphragm unit 2 includes film frame 21, diaphragm 22 and the vibration plate 23 being fitted and connected successively.Film frame
21 outward flange is pasted with the madial wall of housing 1 to be connected.Film frame 21 and the side wall of housing 1 are vertically arranged.Film frame 21 is by shell
Air chamber 11 and rear gas chamber 12 before the cavity of body 1 is divided into.Preceding air chamber 11 offers sound mouth 111, and sound mouth 111 is located at housing 1
On the wall of side, extraneous and preceding air chamber 11 is connected.Coil 3 is located in rear gas chamber 12.It is equipped with what magnetostriction materials were made in coil 3
Magnetostriction plate 4.The bottom of magnetostriction plate 4 is connected with the bottom of housing 1.The end of coil 3 is connected with the bottom of housing 1.
Magnetostriction plate 4 and coil 3 is set to be firmly placed in housing 1.In the presence of the alternating magnetic field of coil 3, mangneto is stretched
The length of contracting plate 4 changes.The inner bottom wall of one end of magnetostriction plate 4 and housing is connected, the other end of magnetostriction plate 4 with
Diaphragm unit 2 is connected, specifically, and the other end of magnetostriction plate 4 is connected with vibration plate 23.When the length of magnetostriction plate 4
When, promote vibration plate 23 to move up, when the length of magnetostriction plate 4 becomes in short-term, drive vibration plate 23 to move down, so repeat,
The vibration up and down for forming vibration plate 23 produces sound.Film frame 21 is provided with endoporus, and diaphragm 22 covers the endoporus of film frame 21.
Vibration plate 23 is fitted in the both sides of diaphragm 22 with film frame 23 respectively.For the ease of the connection of magnetostriction plate 4 and vibration plate 23, vibration plate
23 are located in rear gas chamber 12, and film frame 21 is located in preceding air chamber 11.One side of vibration plate 23 is overlapping with film frame 21, vibration plate 23 its
Remaining side and the inner port edge of film frame 21 are provided with space.Diaphragm 22 is located at the outward flange of vibration plate 23 and the inner port edge of film frame 21
Between part in space be projection 221, provide space for the vibration up and down of vibration plate 23, it is ensured that the vibration width of vibration plate 23
Degree.Projection 221 is towards rear gas chamber 12, and the cross section of projection 221 is U-shaped, and U-shaped raised stiffness is preferable.It is of the present utility model to drive
Dynamic part is only coil and magnetostriction plate, simple in construction and space-consuming is smaller, and the volume of rear gas chamber can be reduced as far as possible, so that
Realize the miniaturization of electro-acoustic conversion device.
Above-described is only some embodiments of the present utility model.For those of ordinary skill in the art, exist
On the premise of not departing from the utility model creation design, various modifications and improvements can be made, it is new that these belong to this practicality
The protection domain of type.
Claims (6)
1. a kind of miniature electro-acoustic conversion equipment, it is characterised in that the diaphragm including housing and in the cavity of the housing
Component, coil and the magnetostriction plate being made up of magnetostriction materials,
The outward flange of the diaphragm unit is connected with the madial wall of the housing, before the cavity of housing is divided into by the diaphragm unit
Air chamber and rear gas chamber, the preceding air chamber offer sound mouth,
The coil and magnetostriction plate are located in the rear gas chamber, and the magnetostriction plate is equipped with the coil, described
One end of magnetostriction plate is connected with the diaphragm unit, and the other end of the magnetostriction plate is connected with the housing.
2. miniature electro-acoustic conversion equipment according to claim 1, it is characterised in that the diaphragm unit includes fitting successively
Film frame, diaphragm and the vibration plate of connection, the outward flange of the film frame are connected with the madial wall of the housing, and the film frame is set
There is endoporus, the endoporus of film frame is stated in the membrane covered residence, and the vibration plate is fitted in the diaphragm respectively with the film frame
Both sides, one side of the vibration plate is overlapping with the film frame, remaining side of the vibration plate and the inner port edge of the film frame
Provided with space.
3. miniature electro-acoustic conversion equipment according to claim 2, it is characterised in that the vibration plate is towards the coil, institute
One end that vibration plate is stated with the magnetostriction plate is connected.
4. miniature electro-acoustic conversion equipment according to claim 2, it is characterised in that the diaphragm is located in the space
Part is projection.
5. miniature electro-acoustic conversion equipment according to claim 4, it is characterised in that the projection is described towards rear gas chamber
Raised cross section is U-shaped.
6. miniature electro-acoustic conversion equipment according to claim 1, it is characterised in that the magnetostriction plate and the coil
Do not contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621406681.2U CN206365025U (en) | 2016-12-21 | 2016-12-21 | A kind of miniature electro-acoustic conversion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621406681.2U CN206365025U (en) | 2016-12-21 | 2016-12-21 | A kind of miniature electro-acoustic conversion equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206365025U true CN206365025U (en) | 2017-07-28 |
Family
ID=59375218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621406681.2U Active CN206365025U (en) | 2016-12-21 | 2016-12-21 | A kind of miniature electro-acoustic conversion equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206365025U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134190A1 (en) * | 2018-12-25 | 2020-07-02 | 苏州三色峰电子有限公司 | Receiver |
-
2016
- 2016-12-21 CN CN201621406681.2U patent/CN206365025U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020134190A1 (en) * | 2018-12-25 | 2020-07-02 | 苏州三色峰电子有限公司 | Receiver |
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