CN209526841U - Loudspeaker and earphone - Google Patents
Loudspeaker and earphone Download PDFInfo
- Publication number
- CN209526841U CN209526841U CN201822278123.8U CN201822278123U CN209526841U CN 209526841 U CN209526841 U CN 209526841U CN 201822278123 U CN201822278123 U CN 201822278123U CN 209526841 U CN209526841 U CN 209526841U
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- pole piece
- voice coil
- loudspeaker
- protrusion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 55
- 239000010959 steel Substances 0.000 claims abstract description 55
- 238000005452 bending Methods 0.000 claims description 7
- 230000035945 sensitivity Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 241000357293 Leptobrama muelleri Species 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model provides a kind of loudspeaker and earphone, including vibrational system and magnetic circuit system, vibrational system includes the voice coil of vibrating diaphragm and driving vibrating diaphragm, magnetic circuit system includes magnetic bowl, the first magnet steel and pole piece for being fixed to magnetic bowl, the second magnet steel is equipped in the side away from the first magnet steel of pole piece, the magnetizing direction of second magnet steel is opposite with the magnetizing direction of the first magnet steel, the central axis of second magnet steel is overlapped with the central axis of pole piece, the side away from the first magnet steel of pole piece is equipped with blind hole, and the second magnet steel is equipped with the protrusion chimeric with blind hole.Having the beneficial effect that for the utility model adds the second magnet steel back to the side of the first magnet steel above pole piece, second magnet steel is opposite with the magnetizing direction of the first magnet steel, second magnet steel and pole piece are coaxial, the uniformity of Distribution of Magnetic Field can be improved, improve earphone core driving force balance, reduces and waved caused by driving force imbalance；Meanwhile the sensitivity of earphone can be promoted.
Description
[technical field]
The utility model relates to acoustic-electric field more particularly to a kind of loudspeakers and earphone.
[background technique]
Loudspeaker in the earphone of the prior art, including vibrational system and magnetic circuit system, the vibrational system include vibrating diaphragm,
Voice coil and flexible circuit board, the magnetic circuit system include magnetic bowl, the magnet steel and pole piece for being fixed to the magnetic bowl.However, existing skill
The Distribution of Magnetic Field of the earphone of art, loudspeaker is not uniform enough, uneven so as to cause the driving force of earphone core, while also will affect ear
The sensitivity of machine.
Therefore, it is necessary to provide the loudspeaker that a kind of Distribution of Magnetic Field is uniform, balance is good.
[utility model content]
The purpose of this utility model is to provide the loudspeakers of a kind of improvement driving force balance and promotion sensitivity.
The technical solution of the utility model is as follows:
A kind of loudspeaker, including vibrational system and magnetic circuit system are provided, the vibrational system includes vibrating diaphragm and driving vibrating diaphragm
Voice coil, the magnetic circuit system includes magnetic bowl, the first magnet steel and pole piece for being fixed to the magnetic bowl, in the pole piece away from the
The side of one magnet steel is equipped with the second magnet steel, the magnetizing direction of the magnetizing direction of second magnet steel and first magnet steel on the contrary,
The central axis of second magnet steel is overlapped with the central axis of the pole piece, and the side away from the first magnet steel of the pole piece is set
There is blind hole, second magnet steel is equipped with the protrusion chimeric with the blind hole.
Preferably, the blind hole is set to the center of the pole piece, and the protrusion is set to the center of second magnet steel
Position.
Preferably, the blind hole is blind round hole, and the protrusion is cylindrical protrusions.
Preferably, the vibrational system further includes skeleton and flexible circuit board, and the skeleton is close to one end of the vibrating diaphragm
The flexible circuit board is connected, the other end is fixed to the voice coil, and the voice coil is electrically connected with the flexible circuit board.
Preferably, one end that the skeleton is connect with the voice coil is radially bent to form bending part, the bending
Portion axially extends to form annular interconnecting piece towards the voice coil, one end that the voice coil is connect with the skeleton be equipped with it is described
The annular protrusion of annular interconnecting piece cooperation.
A kind of earphone, including earphone outer covering and loudspeaker are provided, the loudspeaker is loudspeaker as described above.
The utility model has the beneficial effects that: the second magnet steel is added back to the side of the first magnet steel above pole piece, the
The magnetizing direction of two magnet steel and the first magnet steel can improve the uniformity of Distribution of Magnetic Field, improve on the contrary, the second magnet steel and pole piece are coaxial
Earphone core driving force balance is reduced and is waved caused by driving force imbalance；Meanwhile the sensitivity of earphone can be promoted.
[Detailed description of the invention]
Fig. 1 is the decomposition diagram of the utility model loudspeaker.
Fig. 2 is the combination diagram of the loudspeaker of the utility model.
Fig. 3 is the cross-sectional view in Fig. 2 along line A-A.
Fig. 4 is the decomposition diagram of the magnetic circuit system of the utility model.
Fig. 5 is the decomposition diagram of the vibrational system of the utility model.
[specific embodiment]
The utility model is described in further detail with embodiment with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of loudspeaker 100 provided according to an embodiment of the present invention, including shell 10,
The magnetic circuit system 20 and vibrational system 30 being mounted in shell 10.
Magnetic circuit system 20 include magnetic bowl 21, the first magnet steel 22 for being fixed to magnetic bowl 21, pole piece 23 and the second magnet steel 24, second
The magnetizing direction of the magnetizing direction of magnet steel 24 and the first magnet steel 22 is on the contrary, the central axis of the second magnet steel 24 and the center of pole piece 23
Axis is overlapped.In the present invention, the first magnet steel 22 and the second magnet steel 24 are all along radial polarization.
As shown in Figure 3 and Figure 4, it is preferable that blind hole 231 is formed away from the side of first magnet steel 22 in pole piece 23, second
Magnet steel 24 is equipped with the protrusion 241 chimeric with blind hole 231 towards the side of pole piece 23.Blind hole 231 is set to the center of pole piece 23,
Protrusion 241 is set to the center of the second magnet steel 24.Protrusion 241 is entrenched in blind hole 231, so that in the second magnet steel 24
The central axis of mandrel line and pole piece 23 is on the same line.Preferably, blind hole 231 is blind round hole, and protrusion 241 is cylinder
Protrusion, cylindrical protrusions card insertion is in blind round hole, it can be ensured that the concentricity of pole piece 23 and the second magnet steel 24.Of course, blind hole
231 or protrusion 241 or other shapes for matching, as long as can guarantee the concentricity of pole piece 23 and the second magnet steel 24 i.e.
It can.Preferably, in the case where 23 material of pole piece is thicker, the deeper blind hole of depth, which can be set, also can be set through-hole, energy
Ensure the positioning of pole piece 23 and the second magnet steel 24.
Refering to shown in Fig. 3 and Fig. 5, vibrational system 30 includes vibrating diaphragm 31, voice coil 32, skeleton 33 and flexible circuit board 34, bone
Frame 33 is fixed to voice coil 32 far from one end of vibrating diaphragm 31, and specifically, one end that skeleton 33 is connect with voice coil 32 is radially curved
Folding form bending part 331, then extend axially downward to form annular interconnecting piece 332 again, voice coil 32 connect with skeleton 33 one
End is equipped with the annular protrusion 321 cooperated with annular interconnecting piece 332, and voice coil 32 and skeleton 33 pass through annular interconnecting piece 332 and annular
Protrusion 321 is fixedly connected, i.e. the top surface of annular protrusion 321 is fixed to 331 bottom surface of bending part, and the outer surface of annular protrusion 321 is solid
The fixed inner surface to annular interconnecting piece 332.Skeleton 33 close to vibrating diaphragm 31 one end connect flexible circuit board 34, and voice coil 32 with it is soft
Property circuit board 34 be electrically connected.Skeleton 33 is set, so that the top of voice coil 32 can be directly fixed to skeleton 33, so as to substantially reduce
The broken string risk of voice coil 32, voice coil 32 can be used thinner line coiling and form, to reduce the weight of entire vibrational system, mention
Rise sensitivity.
Vibrating diaphragm 31 includes centrally located top dome 311, around top dome 311 and the interconnecting piece 312 that connect with top dome 311
And extend and fix the fixed part 313 of vibrating diaphragm 31 to shell 10 from interconnecting piece 312.
The utility model also provides a kind of earphone, including earphone outer covering (not shown) and foregoing loudspeaker 100.
In the utility model, the second magnet steel 24, the side of magnetizing of the second magnet steel 24 are added above the pole piece 23 of loudspeaker 100
To the magnetizing direction with the first magnet steel 22 on the contrary, the magnetic line of force from the first magnet steel 22 and the second magnet steel 24 is after the convergence of pole piece 23
Flowing through voice coil 32, then magnetic bowl 21 is flowed to, so as to improve the uniformity of 100 Distribution of Magnetic Field of loudspeaker, improve earphone core driving force
Balance is reduced and is waved caused by driving force imbalance；Meanwhile the sensitivity of earphone can be promoted.
Above-described is only the embodiments of the present invention, it should be noted here that for the ordinary skill of this field
For personnel, without departing from the concept of the present invention, improvement can also be made, but these belong to it is practical
Novel protection scope.
Claims (6)
1. a kind of loudspeaker, including vibrational system and magnetic circuit system, the vibrational system includes the voice coil of vibrating diaphragm and driving vibrating diaphragm,
The magnetic circuit system includes magnetic bowl, the first magnet steel and pole piece for being fixed to the magnetic bowl, which is characterized in that in the back of the pole piece
Side from the first magnet steel is equipped with the second magnet steel, the magnetizing direction phase of the magnetizing direction of second magnet steel and first magnet steel
Instead, the central axis of second magnet steel is overlapped with the central axis of the pole piece, the pole piece away from the one of the first magnet steel
Side is equipped with blind hole, and second magnet steel is equipped with the protrusion chimeric with the blind hole.
2. loudspeaker according to claim 1, it is characterised in that: the blind hole is set to the center of the pole piece, institute
State the center that protrusion is set to second magnet steel.
3. loudspeaker according to claim 2, it is characterised in that: the blind hole is blind round hole, and the protrusion is cylinder
Shape protrusion.
4. loudspeaker according to any one of claims 1 to 3, it is characterised in that: the vibrational system further include skeleton and
Flexible circuit board, the skeleton connect the flexible circuit board close to one end of the vibrating diaphragm, and the other end is fixed to the voice coil,
And the voice coil is electrically connected with the flexible circuit board.
5. loudspeaker according to claim 4, it is characterised in that: one end that the skeleton is connect with the voice coil is radially
Outward bending forms bending part, and the bending part axially extends to form annular interconnecting piece towards the voice coil, the voice coil with
One end of the skeleton connection is equipped with the annular protrusion with the annular interconnecting piece cooperation.
6. a kind of earphone, including earphone outer covering and loudspeaker, the loudspeaker is loudspeaking described in any one of claim 1 to 5
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278123.8U CN209526841U (en) | 2018-12-30 | 2018-12-30 | Loudspeaker and earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278123.8U CN209526841U (en) | 2018-12-30 | 2018-12-30 | Loudspeaker and earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526841U true CN209526841U (en) | 2019-10-22 |
Family
ID=68228837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822278123.8U Expired - Fee Related CN209526841U (en) | 2018-12-30 | 2018-12-30 | Loudspeaker and earphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209526841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114070A1 (en) * | 2019-12-10 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Earphone core and earphone |
-
2018
- 2018-12-30 CN CN201822278123.8U patent/CN209526841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021114070A1 (en) * | 2019-12-10 | 2021-06-17 | 瑞声声学科技(深圳)有限公司 | Earphone core and earphone |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |