CN209526873U - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN209526873U CN209526873U CN201822278115.3U CN201822278115U CN209526873U CN 209526873 U CN209526873 U CN 209526873U CN 201822278115 U CN201822278115 U CN 201822278115U CN 209526873 U CN209526873 U CN 209526873U
- Authority
- CN
- China
- Prior art keywords
- magnet steel
- pole piece
- voice coil
- hole
- loudspeaker
- 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 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000003780 insertion Methods 0.000 claims abstract description 12
- 230000037431 insertion Effects 0.000 claims abstract description 12
- 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
- 238000010586 diagram Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Landscapes
- Headphones And Earphones (AREA)
Abstract
The utility model provides 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, the second magnet steel is equipped in the side away from the first magnet steel of the pole piece, on the contrary, the pole piece is equipped with through-hole, second magnet steel is equipped with the card insertion portion cooperated with the through-hole for the magnetizing direction of second magnet steel and the magnetizing direction of the first magnet steel.The beneficial effect of the loudspeaker of the utility model is: adding the second magnet steel in the side of pole piece back to the first magnet steel, 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.
[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, and the magnetizing direction of second magnet steel and the magnetizing direction of the first magnet steel are on the contrary, described
Pole piece is equipped with through-hole, and second magnet steel is equipped with the card insertion portion cooperated with the through-hole.
Preferably, the through-hole is set to center of the pole piece towards second magnet steel side, the card insertion portion
Set on second magnet steel towards the center of the pole piece side.
Preferably, the through-hole is circular through hole, and the card insertion portion is cylindrical projection.
Preferably, the loudspeaker further includes shell, and the vibrational system and magnetic circuit system are all mounted in the shell.
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 of the skeleton is fixed to the voice coil, and the voice coil and the flexible circuit board
Electrical connection.
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.
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 partial enlarged view in Fig. 3 at B.
Fig. 5 is the decomposition diagram of the magnetic circuit system of the utility model.
Fig. 6 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 shown in Figure 1, Figure 2 and Figure 3, the 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
On the contrary, pole piece 23 is equipped with through-hole 231, the second magnet steel 24 is equipped with matches with through-hole 231 for the magnetizing direction of magnet steel 24 and the first magnet steel 22
The card insertion portion 241 of conjunction.In the present invention, the first magnet steel 22, pole piece 23 and the second magnet steel 24 are all along radial polarization.
Preferably, through-hole 231 is set to center of the pole piece 23 towards 24 side of the second magnet steel, and card insertion portion 241 is set to the
Two magnet steel 24 towards 23 side of pole piece center so that the central axis of the central axis of the second magnet steel 24 and pole piece 23
Line is on the same line.
As shown in Figure 3 and Figure 5, it is preferable that through-hole 231 is circular through hole, and card insertion portion 241 is cylindrical protrusions.It is cylindrical
Raised card insertion is in circular through hole, it can be ensured that the concentricity of pole piece 23 and the second magnet steel 24.Of course, through-hole 231 or card insertion portion
241 may be the shape that other are matched, as long as can guarantee the concentricity of pole piece 23 and the second magnet steel 24.
Refering to shown in Fig. 3, Fig. 4 and Fig. 6, vibrational system 30 includes vibrating diaphragm 31, voice coil 32, skeleton 33 and flexible circuit board
34, skeleton 33 is fixed to voice coil 32 far from one end of vibrating diaphragm 31, specifically, one end that skeleton 33 is connect with voice coil 32 radially to
It is bent to form bending part 331 outside, then extends axially downward to form annular interconnecting piece 332 again, voice coil 32 is connect with skeleton 33
One end be equipped with the annular protrusion 321 that cooperate with annular interconnecting piece 332, 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, the appearance of annular protrusion 321
Face is fixed to the inner surface of annular interconnecting piece 332.Skeleton 33 connects flexible circuit board 34, and voice coil 32 close to one end of vibrating diaphragm 31
It is electrically connected with flexible circuit board 34.Skeleton 33 is set, so that the top of voice coil 32 can be directly fixed to skeleton 33, so as to significantly
The broken string risk of voice coil 32 is reduced, voice coil 32 can be used thinner line coiling and form, to reduce the weight of entire vibrational system
Amount promotes 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.
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.The utility model it is another
Innovative point is, 23 material of pole piece on pole piece 23 than using via design, facilitating pole piece 23 and second in the case where relatively thin
The positioning of magnet steel 24.Assuming that opening up blind hole, but the depth that blind hole can be set is shallower, pole piece 23 and the second magnet steel 24 cannot achieve
Positioning.
It should be noted that in the utility model embodiment institute it is directional instruction (such as up, down, left, right, before and after,
Inside and outside, top, bottom ...) it is only used for explaining in the opposite position under a certain particular pose (as shown in the picture) between each component
Relationship etc. is set, if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
It should also be noted that, when an element is referred to as being " fixed " or " disposed " on another element, which can
Directly on the other element or may be simultaneously present centering elements.When an element referred to as " connects " another yuan
Part, it, which can be, is directly connected to another element or may be simultaneously present centering elements.
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 be equipped with the second magnet steel, the magnetizing direction of second magnet steel and the magnetizing direction of the first magnet steel on the contrary,
The pole piece is equipped with through-hole, and second magnet steel is equipped with the card insertion portion cooperated with the through-hole.
2. loudspeaker according to claim 1, it is characterised in that: the through-hole is set to the pole piece towards second magnetic
The center of steel side, the card insertion portion are set to center of second magnet steel towards the pole piece side.
3. loudspeaker according to claim 2, it is characterised in that: the through-hole is circular through hole, and the card insertion portion is circle
Column protrusion.
4. loudspeaker according to any one of claims 1 to 3, it is characterised in that: the loudspeaker further includes shell, described
Vibrational system and magnetic circuit system are all mounted in the shell.
5. 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 of the skeleton is fixed
The extremely voice coil, and the voice coil is electrically connected with the flexible circuit board.
6. loudspeaker according to claim 5, 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278115.3U CN209526873U (en) | 2018-12-30 | 2018-12-30 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822278115.3U CN209526873U (en) | 2018-12-30 | 2018-12-30 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209526873U true CN209526873U (en) | 2019-10-22 |
Family
ID=68228742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822278115.3U Expired - Fee Related CN209526873U (en) | 2018-12-30 | 2018-12-30 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209526873U (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 CN201822278115.3U patent/CN209526873U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191022 |