CN209402719U - Microphone device - Google Patents
Microphone device Download PDFInfo
- Publication number
- CN209402719U CN209402719U CN201821662523.2U CN201821662523U CN209402719U CN 209402719 U CN209402719 U CN 209402719U CN 201821662523 U CN201821662523 U CN 201821662523U CN 209402719 U CN209402719 U CN 209402719U
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- China
- Prior art keywords
- recessed portion
- face
- magnet
- microphone device
- magnetic yoke
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Abstract
The utility model discloses a kind of microphone devices, it is related to electro-acoustic product technical field, including magnetic circuit system and vibrational system, magnetic circuit system includes conductive magnetic yoke and the magnet assemblies that are mounted in conductive magnetic yoke, magnet assemblies include the first face towards conductive magnetic yoke and the second face being oppositely arranged with the first face, it is provided in magnet assemblies from the first recessed portion towards the second face recess, also, recessed portion does not penetrate through the first face and the second face vertically.The microphone device of the utility model increases gluing area by the way that recessed portion is arranged in magnet assemblies, improves the adhesion strength of magnet assemblies and conductive magnetic yoke.
Description
Technical field
The utility model relates to electroacoustic fields, are specifically related to a kind of microphone device.
Background technique
Loudspeaker has been widely applied on the terminal electronics product such as mobile phone, Pad, earphone as a kind of microphone device.
The designer trends for being increasingly thinned, minimizing with electronic product, the overall dimensions of loudspeaker also design smaller and smaller.Mesh
Before, the connection type of magnet and conductive magnetic yoke is generally plane contact and applies glue connection, however works as the ratio of the size design of magnetic circuit component
When lesser, then by traditional gluing mode be difficult to guarantee high adhesion strength under limited area, to product into
It is easy to produce cracking in row fall-down test, causes the reliability of product and stability poor.
Utility model content
In view of the above-mentioned problems, the technical problem to be solved by the utility model is to provide a kind of microphone device, it is whole in product
Increase the adhesion strength of the two under the premise of body size and component are constant.
To solve the above-mentioned problems, the technical solution of the utility model is:
A kind of microphone device, including magnetic circuit system and vibrational system, the magnetic circuit system include that conductive magnetic yoke and installation are solid
Magnet assemblies in the conductive magnetic yoke, wherein the magnet assemblies include the first face towards the conductive magnetic yoke and with
The second face that first face is oppositely arranged is provided in the magnet assemblies from described first towards second face recess
Recessed portion, also, the recessed portion does not penetrate through first face and the second face vertically.
Preferably, adhesive glue is filled in the recessed portion.
Optionally, the recessed portion includes one or more groove structure.
Optionally, the recessed portion is provided with multiple groove structures；Multiple groove structures are evenly spaced on, or
Person, the spacing between multiple groove structures differ.
Optionally, the transverse width of the recessed portion is gradually reduced from open end to bottom end, alternatively, the recessed portion
Open end is equal with the transverse width of bottom end.
Optionally, the cross sectional shape of the recessed portion is round, rectangle or round rectangle.
Optionally, the magnet assemblies include being set to the centring magnet of the conductive magnetic yoke center and being arranged in institute
State two pieces or four blocks of side magnet of conductive magnetic yoke marginal position；The recessed portion is arranged in the centring magnet and/or side magnet
On.
Preferably, the conductive magnetic yoke is in tabular, and the side magnet is provided with four pieces；The recessed portion is arranged at each piece
On the side magnet；The side magnet includes the first part close to centring magnet and second far from the centring magnet
Point, the recessed portion is arranged on the second part.
Preferably, the lateral cross-sectional area of the recessed portion is not more than the area in the first face of the corresponding side magnet
1/2。
Preferably, the lateral cross-sectional area of the recessed portion is not more than the area in the first face of the corresponding side magnet
1/3。
After above-mentioned technical proposal, the beneficial effects of the utility model are:
By the way that the recessed portion not penetrated through is arranged in magnet assemblies, and colloid can be coated in recessed portion, so that
The gluing area of magnet assemblies and conductive magnetic yoke in assembly obviously increases, and improves adhesion strength, reduces the wind for even avoiding fracture
Danger, meets product stability demand；Also, by the design of recessed portion, it is also convenient for the gluing on the fitting surface of the two, simplifies and applies
Glue program.
Detailed description of the invention
Fig. 1 is the diagrammatic cross-section of the utility model embodiment acoustic device magnetic circuit components of system as directed structure；
Appended drawing reference therein includes: 1, conductive magnetic yoke, 20, centring magnet, 21, side magnet, 210, recessed portion.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is further described.
The microphone device of the utility model, including magnetic circuit system and vibrational system, wherein magnetic circuit system include conductive magnetic yoke with
And the magnet assemblies that assembly is fixed in conductive magnetic yoke.It will be readily understood that microphone device can be set to single magnetic structure, i.e.,
One block of centring magnet only is set in the center of conductive magnetic yoke, may be set to be multipath magnetic circuit structure, i.e., simultaneously in conductive magnetic yoke
Two pieces or four blocks of side magnet are arranged in marginal position, these are all the conventional designs of this field, and details are not described herein.
In order to solve the problems, such as that conductive magnetic yoke and magnet cartridge are inadequate with adhesion strength in the prior art, the utility model proposes
Recessed portion is set in magnet assemblies, specifically, magnet assemblies include the first face both (adhesive surface) i.e. towards conductive magnetic yoke with
And the second face being oppositely arranged with the first face, recessed portion are recessed to be formed towards the second face from first, also, recessed portion is vertically
The first face and the second face are not penetrated through.
In order to preferably illustrate the technical program, exemplary illustration is done in conjunction with following example.
Embodiment:
As shown in Figure 1, the present embodiment is related to the microphone device of multipath magnetic circuit, magnetic circuit system specifically includes flat magnetic conduction
Yoke 1 and be arranged in conductive magnetic yoke 1 center one block of centring magnet 20, four blocks of side magnet 21 of its marginal position are set
(sectional view illustrates only two pieces).In the present embodiment, it is provided with recessed portion 210 on side magnet 21, recessed portion 210 is from side
The first of magnet 21 is recessed to be formed towards the second face.
When conductive magnetic yoke 1 and side magnet 21 assemble, gluing area between the two increases the space of recessed portion 210, i.e.,
It is coated with adhesive glue simultaneously in the adhesive surface (i.e. the first face) and recessed portion 210 of the two, the bonding of the two can be increased in this way
Intensity can satisfy product when carrying out drop test to stability, the demand of reliability, while be also convenient for gluing.
Preferably, recessed portion 210 may include one or more groove structure, when being provided with a groove structure,
It can be punched into a recessed portion 210 to the second face along the long axis direction of side magnet 21, it is more when being provided with multiple groove structures
A groove structure, which can be configured as, to be uniformly spaced apart, and spacing etc. is also configurable to.Certainly, in order to guarantee gluing
The uniformity, preferably equidistantly distributed.
In the specific implementation, the transverse width of recessed portion 210 can be from open end (i.e. port on the first face) bottom of to
End is gradually reduced, that is, is set as tapering type structure, and it is equal with the width of bottom end to may be set to be open end, from the first face
Specific concave manner to the second face is unrestricted.
In addition, the cross sectional shape of recessed portion 210 can be set to round, rectangle or round rectangle, in the present embodiment,
Because microphone device is rectangle, it can choose and be set as rectangle, being set as other any shapes certainly is all theoretically that can grasp
Make.
It should be noted that the specific portion about the shape of recessed portion 210, quantity, distribution and setting of above-mentioned introduction
What part was made just for the sake of elaboration the utility model schematically enumerates, and those skilled in the art in the specific implementation can root
According to actual conditions flexible choice.
In addition, the situation that recessed portion 210 is set on side magnet 21 is illustrated only in the present embodiment, likewise, recessed portion
210 also can be set on centring magnet 21, or simultaneously on centrally disposed magnet 20 and side magnet 21, more when being arranged
When the magnet 21 of block side, it can also be only in several pieces of upper settings wherein, be also possible to all be arranged on each piece.No matter it is arranged in
On centring magnet or on the magnet of side, effect is to enhance gluing between conductive magnetic yoke and magnet assemblies by increasing glue-spread
Knotting strength.
Further desirable for explanation, when recessed portion is arranged on the magnet of side, due to side magnet and centring magnet it
Between gap be magnetic gap, and side magnet close to the first part of centring magnet be also constitute magnetic gap most important part,
It is big for the second part far from centring magnet to the contribution of magnetic field strength, therefore in order to reduce as far as possible pair
The influence of BL value, preferably on the second portion by recessed portion setting, the recessed portion specifically illustrated in attached drawing are to be located at side magnet
Center on.Additionally, it is preferred that, the lateral cross-sectional area of recessed portion is not more than the area in the first face of corresponding side magnet
1/2, more preferably, no more than the 1/3 of the first face area, can preferably balance improve adhesion strength and magnetic property in this way
Relationship between loss.
It is well known that the magnetic circuit system of microphone device further includes the center magnetic conduction of centrally disposed magnet and side magnet surface
Plate and side magnetic conductive board.In addition, vibrational system includes vibrating diaphragm and the voice coil that is connected and fixed with vibrating diaphragm, the one end of voice coil far from vibrating diaphragm
It is suspended in the magnetic gap of magnetic circuit system.After external electric signal accesses voice coil, moved back and forth under the action of electromagnetic field,
Diaphragm oscillations are driven, outwardly radiative acoustic wave, realizes the conversion of electric energy to sound energy.Above structure is to those skilled in the art
It is well known design, therefore repeats no more in the present invention.
The above is only the utility model case study on implementation, are not intended to limit the utility model, as long as this field is common
Technical staff's equivalent modification according to made by the utility model disclosure or variation, should all be included in claims and record
Protection scope in.
Claims (10)
1. a kind of microphone device, including magnetic circuit system and vibrational system, the magnetic circuit system includes that conductive magnetic yoke and installation are fixed
Magnet assemblies in the conductive magnetic yoke, it is characterised in that: the magnet assemblies include the first face towards the conductive magnetic yoke with
And the second face being oppositely arranged with first face, it is provided in the magnet assemblies recessed towards second face from described first
Sunken recessed portion, also, the recessed portion does not penetrate through first face and the second face vertically.
2. microphone device according to claim 1, it is characterised in that: be filled with adhesive glue in the recessed portion.
3. microphone device according to claim 2, it is characterised in that: the recessed portion includes one or more groove knot
Structure.
4. microphone device according to claim 3, it is characterised in that: the recessed portion is provided with multiple groove structures；It is more
A groove structure is evenly spaced on, alternatively, the spacing between multiple groove structures differs.
5. microphone device according to claim 2, it is characterised in that: the transverse width of the recessed portion from open end to
Bottom end is gradually reduced, alternatively, the open end of the recessed portion is equal with the transverse width of bottom end.
6. microphone device according to claim 2, it is characterised in that: the cross sectional shape of the recessed portion is round, rectangle
Or round rectangle.
7. microphone device according to claim 2, it is characterised in that: the magnet assemblies include being set to the conductive magnetic yoke
The centring magnet of center and two pieces or the four blocks of side magnet that the conductive magnetic yoke marginal position is set；The recessed portion
It is arranged on the centring magnet and/or side magnet.
8. microphone device according to claim 7, it is characterised in that: the conductive magnetic yoke is in tabular, and the side magnet is set
It is equipped with four pieces；The recessed portion is arranged on each block of side magnet；The side magnet includes close to the first of centring magnet
The second part of part and the separate centring magnet, the recessed portion are arranged on the second part.
9. microphone device according to claim 7, it is characterised in that: the lateral cross-sectional area of the recessed portion no more than pair
The 1/2 of the area in the first face of the side magnet answered.
10. microphone device according to claim 9, it is characterised in that: the lateral cross-sectional area of the recessed portion is not more than
The 1/3 of the area in the first face of the corresponding side magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821662523.2U CN209402719U (en) | 2018-10-13 | 2018-10-13 | Microphone device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821662523.2U CN209402719U (en) | 2018-10-13 | 2018-10-13 | Microphone device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209402719U true CN209402719U (en) | 2019-09-17 |
Family
ID=67878205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821662523.2U Active CN209402719U (en) | 2018-10-13 | 2018-10-13 | Microphone device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209402719U (en) |
-
2018
- 2018-10-13 CN CN201821662523.2U patent/CN209402719U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |