CN208522987U - A kind of twin coil micro-telephone receiver based on moving magnet - Google Patents
A kind of twin coil micro-telephone receiver based on moving magnet Download PDFInfo
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- CN208522987U CN208522987U CN201820808051.0U CN201820808051U CN208522987U CN 208522987 U CN208522987 U CN 208522987U CN 201820808051 U CN201820808051 U CN 201820808051U CN 208522987 U CN208522987 U CN 208522987U
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Abstract
The utility model provides a kind of twin coil micro-telephone receiver based on moving magnet, including upper housing, upper housing one end is set there are two the first connecting terminal, first magnetic core is located at the intracorporal bottom of chamber of upper housing, first coil is wound in the periphery of the first magnetic core, first coil is connect with the first connecting terminal, upper housing and lower case make-up are arranged to form the shell with cavity, the one end of lower case is set there are two the second connecting terminal, second magnetic core is located at the intracorporal bottom of chamber of lower case, second coil winding is in the periphery of the second magnetic core, second coil is connect with the second connecting terminal, diaphragm unit includes vibrating frame, the diaphragm being fitted on vibrating frame surface and the vibrating reed being fitted on the surface of diaphragm, the recessed portion of sinking is equipped in the middle part of vibrating reed, magnet is mounted in recessed portion, first magnetic core and the second magnetic core are symmetrically distributed in magnetic The two sides of iron.The utility model uses unique moving magnet technology, and the efficiency of dynamic iron can be maintained to improve the efficiency of receiver, be easy to automate.
Description
Technical field
The utility model belongs to receiver, is more particularly to a kind of twin coil micro-telephone receiver based on moving magnet.
Background technique
The product of existing moving-coil Technology design manufacture uses stack design, is easy to automate, but volume is big, efficiency
It is low, power consumption is high, be unfavorable for realizing prolonged continuation of the journey in wireless headset application.
The existing dynamic iron technical products based on balanced armature are small in size, high-efficient, power consumption is low, but due to balanced armature
" E " type or U-typed design and balanced armature and diaphragm vibration plate special Joining Technology, be difficult to automate, it is necessary to use
A large amount of manpower produces, and brings very big challenge to cost and yield.
Utility model content
The purpose of the utility model is to provide a kind of twin coil easy to automate based on moving magnet is miniature called
Device.
One aspect according to the present utility model provides a kind of twin coil micro-telephone receiver based on moving magnet, comprising:
Upper housing, for the opened type box body with cavity, the upper housing one end is set there are two the first connecting terminal,
First magnetic core, positioned at the intracorporal bottom of the chamber of the upper housing,
First coil is wound in the periphery of first magnetic core, and the first coil is connect with first connecting terminal,
Lower case, for the opened type box body with cavity, the upper housing is arranged to be formed with the lower case make-up to be had
The cavity of the shell of cavity, the cavity of the upper housing and the lower case constitutes the cavity of the shell, the end of the shell
Portion offers sound mouth, and the one end of the lower case is set there are two the second connecting terminal,
Second magnetic core, positioned at the intracorporal bottom of the chamber of the lower case,
Second coil is wound in the periphery of second magnetic core, and second coil is connect with second connecting terminal,
Diaphragm unit including vibrating frame, the diaphragm being fitted on the vibrating frame surface and is fitted in the diaphragm
The middle part of vibrating reed on surface, the vibrating frame is equipped with inner hole, and the oscillating component of the vibrating reed is located in the inner hole, institute
The one side for stating vibrating reed is connected with the vibrating frame, and sky is equipped between remaining side of the vibrating reed and the vibrating frame inner hole
Gap, the outer edge of the diaphragm unit are fastened between the upper housing and lower case,
Magnet is equipped with the recessed portion of sinking in the middle part of the vibrating reed, and the magnet is mounted in the recessed portion, and described the
One magnetic core and second magnetic core are symmetrically distributed in the two sides of magnet.
In some embodiments, first magnetic core be welded on the upper housing intracavity bottom permeability alloys block or
For the protrusion that the upper housing is formed to its cavity sunken inside, second magnetic core is to be welded on the lower housing cavity bottom
Permeability alloys block or the protrusion formed for the lower case to its cavity sunken inside.
In some embodiments, alternating current flows through the first coil and the second coil, in first magnetic core and
Alternating magnetic field is formed between second magnetic core.
In some embodiments, the gap described in the membrane covered between vibrating frame and the vibrating reed, the film
Part of the piece between the vibrating frame and the vibrating reed is arch shape.
In some embodiments, the vibrating frame and the vibrating reed are structure as a whole, the vibrating frame and the vibration
Movable plate fits on the surface of the same side of the diaphragm, and one side of the vibrating reed is structure as a whole with the vibrating frame, institute
It states and is equipped with gap between remaining side of vibrating reed and the inner hole of the vibrating frame.
In some embodiments, the vibrating frame and the vibrating reed are separate structure, the vibrating frame and the vibration
Movable plate is located at the two sides for fitting in the diaphragm, and one side of the vibrating reed overlaps with the vibrating reed, the vibrating reed
The inner hole of remaining side and the vibrating frame is equipped with gap.
In some embodiments, the cavity of the shell is separated into two cavitys, the sound out by the diaphragm unit
Mouth is provided with the end of the lesser shell of the cavity volume.
In some embodiments, the bottom of the coil opposite with the magnet and magnetic core is equipped with protection board.
It has the advantage that: the utility model uses unique moving magnet technology, i.e., magnet is in movement shape at work
The magnet of state, oscillating component is lighter relative to the vibration end of the balanced armature of dynamic iron design the inside, and the movement of magnet directly drives
Vibrating reed movement eliminates the special Joining Technology in dynamic iron design from balanced armature to diaphragm, real using the structure of twin coil
Show magnetic circuit in design full symmetric, reduction distortion is also helped while the efficiency for further increasing receiver,
On the basis of the volume for keeping dynamic iron, design is become the design stacked, is highly susceptible to automating, it is ensured that the quality of product, at
Sheet and the suddenly big or suddenly small requirement to amount.
Detailed description of the invention
Fig. 1 is a kind of explosion signal of twin coil micro-telephone receiver based on moving magnet of the utility model embodiment one
Figure；
Fig. 2 is a kind of section view signal of twin coil micro-telephone receiver based on moving magnet of the utility model embodiment one
Figure；
Fig. 3 is a kind of explosion signal of twin coil micro-telephone receiver based on moving magnet of the utility model embodiment two
Figure；
Fig. 4 is a kind of section view signal of twin coil micro-telephone receiver based on moving magnet of the utility model embodiment two
Figure；
Specific embodiment
To make the above-mentioned purpose of the utility model, feature and a little can be more obvious and easy to understand, with reference to the accompanying drawing and tool
Body embodiment is described in further detail the utility model.
In this text, so-called " one embodiment " or " embodiment ", which refers to, may be included at least one reality of the utility model
A particular feature, structure, or characteristic in existing mode." in one embodiment " that different places occur in the present specification is not equal
Refer to the same embodiment, nor the individual or selective embodiment mutually exclusive with other embodiments.
Embodiment one
Fig. 1 and Fig. 2 schematically shows that a kind of twin coil based on moving magnet of embodiment of the utility model is micro-
Type receiver.As depicted in figs. 1 and 2, being somebody's turn to do the twin coil micro-telephone receiver based on moving magnet 5 includes upper housing 11, the first magnetic core
71, first coil 31, lower case 12, the second magnetic core 72, the second coil 32,44 component 4 of diaphragm and magnet 5.
Upper housing 11 is the opened type box body with cavity.The material of upper housing 11 is permeability magnetic material, has the function of magnetic conduction.
11 the other end of upper housing is set there are two the first connecting terminal 21.First magnetic core 71 is located at the intracorporal bottom of chamber of upper housing 11.
First magnetic core 71 is the permeability alloys block for being welded on bottom in 11 cavity of upper housing.First coil 31 can directly be wound in first
The periphery of magnetic core 71, can also be first by after the completion of 31 coiling of first coil, then is set on the first magnetic core 71.First coil 31
First initial line 311 and the first end lines 312 are connect with two the first connecting terminals 21 of 11 end of upper housing respectively.Lower case
12 be the opened type box body with cavity.The material of lower case 12 is permeability magnetic material, has the function of magnetic conduction.Upper housing 11 and lower casing
12 make-up of body is arranged to form the shell with cavity.The inner chamber body of upper housing 11 and the inner chamber body of lower case 12 collectively form shell
Cavity.The end of shell is equipped with sound mouth 111.The cavity of shell is separated into two cavitys, sound mouth 111 by diaphragm unit 4
It is connected to the lesser shell of cavity volume.In this embodiment, the cavity volume of upper housing 11 is less than the cavity body of lower case 12
Product, sound mouth 111 are set to the end of upper housing 11.Sound mouth 111 is opened in the small side of cavity, and the big side of cavity is working
Shi Zuowei damping, the big damping of cavity is small, and compression or the air function to be done for stretching airtight cavity are few, is conducive to output.Shell
End is equipped with sound tube 6.Sound tube 6 is straight tube-like, and the one end of sound tube 6 is welded on the end of shell, sound mouth 111 with go out
Sound tube 6 is connected.The sound that receiver generates is issued from sound mouth 111, is outwardly spread using sound tube 6.Lower case 12
One end set there are two the second connecting terminal 22.Second magnetic core 72 is located at the intracorporal bottom of chamber of lower case 12.Second magnetic core
72 be the permeability alloys block for being welded on bottom in the cavity of lower case 12, and permeability alloys block is the cylinder made of permeability magnetic material
Body is also possible to cuboid or other shapes.Second coil 32 can be directly wound on the second magnetic core 72, can also be first by second
After the completion of 32 coiling of coil, then it is set on the second magnetic core 72.Second initial line 321 of the second coil 32 and the second end lines
322 connect with two the second connecting terminals 22 of 21 end of lower case respectively.In this embodiment, the second magnetic core 72 and magnetic patch 5
Relatively, protection board 8 made of non-magnet material are equipped at the top of the second magnetic core 72 and the second coil 32, prevent 5 He of magnet
Magnetic core during the work time close to when inhaled it is dead.Diaphragm unit 4 includes vibrating frame 41, the diaphragm being fitted on 41 surface of vibrating frame
44 and the vibrating reed 43 that is fitted on the surface of diaphragm 44.The middle part of vibrating frame 41 is equipped with inner hole, the vibration section of vibrating reed 43
Quartile is in inner hole.One side of vibrating reed 43 is connect with vibrating frame 41, remaining side of vibrating reed 43 and the interior hole edge of vibrating frame 41
Gap is equipped between edge.Gap section is covered by diaphragm 44, and the part that diaphragm 4 covers gap is convex, can reduce resistance,
Increase the Oscillation Amplitude of vibrating reed 43.In this embodiment, vibrating frame 41 and vibrating reed 43 are structure as a whole.Vibrating frame 41 and vibration
Movable plate 43 is located on the surface of the same side of diaphragm 44.One side of vibrating reed 43 and the inner port edge of vibrating frame 41 are integrated knot
Structure is equipped with gap between remaining side of vibrating reed 43 and the inner port edge of vibrating frame 41.In this embodiment, vibrating frame 41, vibration
The inner hole and vibrating reed 43 of dynamic frame 41 are rectangular-shape, in practical applications, vibrating frame 41, the inner hole of vibrating frame 41 and vibration
Piece 43 can also be other shapes.In other embodiments, vibrating frame 41 and vibrating reed 43 can also be separate structure, vibrating frame
41 and the two sides that are located at diaphragm 44 of vibrating reed 43 surface on.One side of vibrating frame 41 is Chong Die with vibrating frame 43, and overlapping portion is allocated as
For the fulcrum vibrated for vibrating reed 43, it is equipped with gap between remaining side of vibrating reed 43 and the inner port edge for vibrating hole 43, is convenient for
The vibration of vibrating reed 43.The outer edge of diaphragm unit 4 is fastened between upper housing 11 and lower case 12.The middle part of vibrating reed 43 is set
There is the recessed portion 43 of sinking, magnet 5 is mounted in recessed portion 43.In this embodiment, the open-mouth of diaphragm 44 and upper housing 11
It fits, vibrating frame 41 and the open-mouth of the lower case 12 fit.The middle part of vibrating reed 43 is recessed towards 11 stroke of upper housing
Concave portion, magnet 5 and the second magnetic core 72 are opposite, are equipped with protection board 8 at the top of the second magnetic core 72 and the second coil 32.Prevent magnetic
Iron 5 and magnetic core during the work time close to when inhaled it is dead.
The magnet 5 of the utility model is the permanent magnet suitably to magnetize, and the permanent magnet suitably to magnetize is in unsaturation and magnetizes shape
The sensitivity of receiver is arrived in state, the horizontal embodiment magnetized, and the magnet 5 on vibrating reed 43 is located at the centre of two magnetic cores in stress
In equilibrium state, coil is respectively sleeved on magnetic core and lower magnetic core, when applying driving to coil, the friendship of flowing through coil
Time-dependent current generates alternating magnetic field between two magnetic cores, and the magnetic force that magnet just will receive alternation generates reciprocating machine movement, coil
The magnetic energy between two magnetic cores is converted electrical current into, linear magnetic field is formed between the first magnetic core 71 and the second magnetic core 72, reduces
Distortion, magnetic energy push magnet 5 to move up and down and then are converted to mechanical energy, above and below the drive vibrating reed 43 of magnet 5 moved up and down
It vibrates, the intracorporal air of epicoele in upper housing 11 is released or sucked by diaphragm 44, so that air be agitated to make a sound, is being gone out
Sound mouth 111 forms sound press, and then sounding.The design symmetry of twin coil can be much better in performance, and distortion can be smaller.
The utility model is the structure stacked, it is easy to accomplish automated production, the twin coil based on moving magnet are miniature called
The preparation method of device includes the following steps:
Prepare upper housing 11, opens up sound mouth 111 in the one end of upper housing 11, and pacify in the other end of upper housing 11
Fill the first connecting terminal 21.
The coiling first coil 31 on the first magnetic core 71, then the first magnetic core 71 for being equipped with first coil 31 is welded on upper casing
Bottom in the cavity of body 11, or protrusion is stamped and formed out into its cavity as the first magnetic core 71 in the bottom of upper housing 11, first will
It after the completion of 31 coiling of first coil, then is set on the first magnetic core 71, first coil 31 is connect with the first connecting terminal 21, make
Obtain upper housing component.
Prepare lower case 12, second connecting terminal 22 is installed in one end of lower case 12.
The second coil of coiling 32 on the second magnetic core 72, then the second magnetic core 72 for being equipped with the second coil 32 is welded on lower casing
Bottom in the cavity of body 12, or protrusion is stamped and formed out into its cavity as the second magnetic core 72 in the bottom of lower case 12, first will
It after the completion of second coil, 32 coiling, then is set on the second magnetic core 72, the second coil 32 is connect with the second connecting terminal 22, make
Obtain lower case component.
Prepare diaphragm unit 4, the preparation method that vibrating frame 41 and vibrating reed 43 are structure as a whole, comprising:
Prepare sheet metal, on sheet metal using Sheet Metal Forming Technology produce positioned at periphery vibrating frame 41 and be located at
The vibrating reed 43 in portion, diaphragm 44 is fitted on the surface of vibrating frame 41 and vibrating reed 43, and by diaphragm 44 in 41 He of vibrating frame
Gap section between vibrating reed 43 forms protrusion, magnet 5 is mounted in the recessed portion of vibrating reed 43.If split type knot
Structure then first makes vibrating frame 41 and vibrating reed 43 respectively, then vibrating frame 41, diaphragm 44 and vibrating reed 43 is carried out stickup group respectively
Dress.
The diaphragm unit 4 for being equipped with magnet is covered on to the opening of 12 component of lower case, then 11 component of upper housing is buckled to
It on diaphragm unit 4, and is fixedly connected, the first connecting terminal 21 and the second connecting terminal 22 is made to be located at the same side of shell.
Sound tube is installed in the end that shell is provided with sound mouth 111, sound tube inner passage is connected with sound mouth 111
It is logical.
Embodiment two
As shown in Figure 3 and Figure 4, on the basis of example 1, the first magnetic core 71 is changed to upper housing 11 into its cavity
Be recessed the protrusion formed.It will be first set in again on first magnetic core 71 after the completion of 31 coiling of first coil.By the second magnetic core 72
It is changed to the protrusion that lower case 12 is formed to its intracavitary recess.The second magnetic core 72 will be first set in again after the completion of 32 coiling of the second coil
On.First magnetic core 71 and the second magnetic core 72 are changed to be formed from shell to its intracavitary recess, thus save material cost and assembling
It is easy.
In other embodiments, the first magnetic core 71 is the protrusion that upper housing 11 is formed to its cavity sunken inside, the second magnetic core
72 be the permeability alloys block for being welded on bottom in 12 cavity of lower case.Alternatively, the first magnetic core 72 is to be welded on 11 cavity of upper housing
The permeability alloys block of interior bottom, the second magnetic core 72 are the protrusion that lower case 12 is formed to its cavity sunken inside.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art, exist
Under the premise of not departing from the concept of the present invention and working principle, various modifications and improvements can be made.
Claims (8)
1. a kind of twin coil micro-telephone receiver based on moving magnet characterized by comprising
Upper housing, for the opened type box body with cavity, the upper housing one end is set there are two the first connecting terminal,
First magnetic core, positioned at the intracorporal bottom of the chamber of the upper housing,
First coil is wound in the periphery of first magnetic core, and the first coil is connect with first connecting terminal,
Lower case, for the opened type box body with cavity, the upper housing and the lower case make-up are arranged to be formed with cavity
Shell, the cavity of the cavity of the upper housing and the lower case constitutes the cavity of the shell, and the end of the shell is opened
Equipped with sound mouth, the one end of the lower case is set there are two the second connecting terminal,
Second magnetic core, positioned at the intracorporal bottom of the chamber of the lower case,
Second coil is wound in the periphery of second magnetic core, and second coil is connect with second connecting terminal,
Diaphragm unit, including vibrating frame, the diaphragm being fitted on the vibrating frame surface and the surface for being fitted in the diaphragm
On vibrating reed, the middle part of the vibrating frame is equipped with inner hole, and the oscillating component of the vibrating reed is located in the inner hole, the vibration
One side of movable plate is connected with the vibrating frame, and gap is equipped between remaining side of the vibrating reed and the vibrating frame inner hole,
The outer edge of the diaphragm unit is fastened between the upper housing and lower case,
Magnet, the vibrating reed middle part are equipped with the recessed portion of sinking, and the magnet is mounted in the recessed portion, first magnetic
Core and second magnetic core are symmetrically distributed in the two sides of magnet.
2. the twin coil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that first magnetic core
To be welded on the permeability alloys block of the upper housing intracavity bottom or being the protrusion that the upper housing is formed to its cavity sunken inside,
Second magnetic core is to be welded on the permeability alloys block of the lower housing cavity bottom or is the lower case to its cavity indent
Fall into the protrusion formed.
3. the twin coil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that alternating current flows through
The first coil and the second coil form alternating magnetic field between first magnetic core and second magnetic core.
4. the twin coil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the membrane covered
Gap between the vibrating frame and the vibrating reed, part of the diaphragm between the vibrating frame and the vibrating reed
For arch shape.
5. the twin coil micro-telephone receiver according to claim 4 based on moving magnet, which is characterized in that the vibrating frame and
The vibrating reed is structure as a whole, on the surface of the same side that the vibrating frame and the vibrating reed fit in the diaphragm, institute
The one side and the vibrating frame for stating vibrating reed are structure as a whole, between remaining side of the vibrating reed and the inner hole of the vibrating frame
Equipped with gap.
6. the twin coil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the vibrating frame with
The vibrating reed is separate structure, and the vibrating frame and the vibrating reed are located at the two sides for fitting in the diaphragm, the vibration
One side of piece overlaps with the vibrating reed, remaining side of the vibrating reed and the inner hole of the vibrating frame are equipped with gap.
7. the twin coil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that the diaphragm unit
The cavity of the shell is separated into two cavitys, the sound mouth is provided with the end of the lesser shell of the cavity volume.
8. the twin coil micro-telephone receiver according to claim 1 based on moving magnet, which is characterized in that with the magnet phase
Pair coil and magnetic core bottom be equipped with protection board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820808051.0U CN208522987U (en) | 2018-05-28 | 2018-05-28 | A kind of twin coil micro-telephone receiver based on moving magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820808051.0U CN208522987U (en) | 2018-05-28 | 2018-05-28 | A kind of twin coil micro-telephone receiver based on moving magnet |
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| CN208522987U true CN208522987U (en) | 2019-02-19 |
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| CN201820808051.0U Active CN208522987U (en) | 2018-05-28 | 2018-05-28 | A kind of twin coil micro-telephone receiver based on moving magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110012398A (en) * | 2019-05-14 | 2019-07-12 | 潘国昌 | A kind of balance vibration system |
-
2018
- 2018-05-28 CN CN201820808051.0U patent/CN208522987U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110012398A (en) * | 2019-05-14 | 2019-07-12 | 潘国昌 | A kind of balance vibration system |
| CN110012398B (en) * | 2019-05-14 | 2024-03-12 | 潘国昌 | Balanced vibration system |
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