CN209659585U - Loudspeaker - Google Patents
Loudspeaker Download PDFInfo
- Publication number
- CN209659585U CN209659585U CN201822212364.2U CN201822212364U CN209659585U CN 209659585 U CN209659585 U CN 209659585U CN 201822212364 U CN201822212364 U CN 201822212364U CN 209659585 U CN209659585 U CN 209659585U
- Authority
- CN
- China
- Prior art keywords
- loudspeaker
- lid
- loudspeaker monomer
- magnetic
- monomer
- 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
- 239000000178 monomer Substances 0.000 claims abstract description 60
- 239000004033 plastic Substances 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 230000035939 shock Effects 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 8
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Abstract
The utility model provides a kind of loudspeaker, the first lid and the second lid including formation accommodating space and the loudspeaker monomer being contained in the accommodating space, the accommodating space is separated into ante-chamber and back cavity by the loudspeaker monomer, first lid corresponds to and is equipped with open-celled structure at the position of the loudspeaker monomer, is equipped with magnetic conductive board at the open-celled structure.The loudspeaker of the utility model can effectively promote the BL value of loudspeaker by installing magnetic conductive board on the first lid, improve the frequency response of product low frequency.
Description
[technical field]
The utility model relates to acoustic-electric field more particularly to a kind of loudspeakers.
[background technique]
The loudspeaker of the prior art, including the first lid, the second lid and loudspeaker monomer equipped with magnetic bowl and vibrating diaphragm, institute
It states the first lid and the second lid is assembled to form the cavity for accommodating the loudspeaker monomer, what first lid was integrally formed
Plastic casing, plastic casing do not have magnetic conduction ability.With the miniaturization of electronic product, the overall dimensions of loudspeaker are also increasingly
It is small, thus the thickness of the magnetic bowl of loudspeaker monomer also require it is smaller and smaller.However, magnetic bowl thickness reduces, magnetic saturation is easily caused, is dropped
Its low magnetic conduction ability, the BL value of loudspeaker accordingly reduce (B represents magnetic induction intensity, and L is length of the electrified wire in magnetic field,
BL is the product of the length of magnetic induction intensity and electrified wire in magnetic field), sensitivity decrease, product low frequency frequency response reduces.
Therefore, it is necessary to provide a kind of loudspeaker being able to maintain while miniaturization compared with high bl-values again.
[utility model content]
The purpose of this utility model is to provide a kind of loudspeakers for promoting low frequency frequency response.
The technical solution of the utility model is as follows:
A kind of loudspeaker is provided, including forming the first lid of accommodating space and the second lid and being contained in the receiving
The accommodating space is separated into ante-chamber and back cavity, first lid by the loudspeaker monomer in space, the loudspeaker monomer
It is equipped with open-celled structure at the position of the corresponding sounding monomer, magnetic conductive board is installed at the open-celled structure.
Preferably, first lid is made of plastics, and the magnetic conductive board is made of carbon steel.
Preferably, the open-celled structure is completely covered by the magnetic conductive board.
Preferably, the face far from the loudspeaker monomer of first lid is outer surface, and the open-celled structure includes
From the first step portion that the appearance is recessed towards the loudspeaker monomer direction, the magnetic conductive board is fixed on the first step
Portion.
Preferably, the area of the magnetic conductive board is greater than the area of the cross section of the magnetic bowl of the loudspeaker monomer.
Preferably, shock absorber part is equipped between the loudspeaker monomer and the magnetic conductive board.
Preferably, second lid has towards the inner surface of the loudspeaker monomer and away from the loudspeaker monomer
Outer surface, the inner surface, which extends internally, the second flange, and the outer surface is concaved with second step portion, the loudspeaking
One end of device monomer is fixed with second flange, is equipped with cover board in the second step portion.
Preferably, the cover board is steel disc.
Preferably, second lid include side wall and through the side wall go out acoustic aperture, it is described go out acoustic aperture and it is described before
Chamber connection.
The utility model has the beneficial effects that: can effectively promote loudspeaking by installing magnetic conductive board on the first lid
The BL value of device improves the frequency response of product low frequency.
[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 schematic cross-sectional view of the loudspeaker monomer of the utility model.
Fig. 5 is according to new departure of an embodiment of the present invention and the frequency response comparison diagram of prior art.
Fig. 6 is the schematic diagram at first first visual angle of lid of the utility model.
Fig. 7 is the schematic diagram at first second visual angle of lid of the utility model.
Fig. 8 is the schematic diagram of second lid 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 the first lid
10, the second lid 20 and loudspeaker monomer 30, the first lid 10 and the second lid 20 surround jointly accommodates loudspeaker monomer 30
Accommodating space 1, loudspeaker monomer 30 are installed between the first lid 10 and the second lid 20.Loudspeaker monomer 30 and the first lid
Back cavity 2 is formed between 10, forms ante-chamber 3 between loudspeaker monomer 30 and the second lid 20, and sound is issued from ante-chamber 3.
As shown in figure 4, loudspeaker monomer 30 includes magnetic circuit system and vibrational system, magnetic circuit system includes magnetic bowl 301 and receives
The magnet steel 302 being dissolved in magnetic bowl 301, magnetic bowl 301 and magnet steel 302 include 303 He of coil being formed radially magnetic gap, vibrational system
Vibrating diaphragm 304, coil 303 are suspended in magnetic gap, and vibrating diaphragm 304 is fixed on 303 one end of coil.After coil 303 is powered, coil
303 can vibrate under the action of magnetic circuit system magnetic field, and at the same time, coil 303 takes vibrating diaphragm 304 to and vibrates together.Magnet steel 302
It being made of permanent-magnet material, magnetic bowl 301 is made of permeability magnetic material, and the magnetic conduction ability of magnetic bowl 301 is related with thickness, and magnetic bowl 301 is thicker,
Its magnetic conduction ability is stronger.
The vibrating diaphragm 304 of loudspeaker monomer 30 is close to the second lid 20, and magnetic bowl 301 is close to the first lid 10.First lid 10
It is equipped with open-celled structure 101 at 301 position of magnetic bowl of corresponding loudspeaker monomer 30, magnetic conductive board 40 is installed in open-celled structure 101, is led
The magnetic bowl 301 of 40 face of magnetic sheet and close loudspeaker monomer 30, installs at 301 position of magnetic bowl close to loudspeaker monomer 30 and leads
Magnetic sheet 40, the thickness of the magnetic bowl 301 equivalent to increase loudspeaker monomer 30, to enhance magnetic conduction ability.Magnetic bowl 301 is thicker,
Voice coil ambient magnetic flux metric density is bigger, increases the BL value of loudspeaker monomer 30, promotes sensitivity, promotes the frequency response of product low frequency, raises
Sound device playback time bass is also simpler and more honest.
Fig. 5 show the frequency response comparison diagram of the prior art and new solution provided by the utility model, and lines I represents existing
There is technical solution, lines II represents new solution provided by the utility model, test condition are as follows: measuring distance 5cm, freely
, test equipment NI, the prior art and new solution provided by the utility model are in addition to material difference, other conditions phase
Together.From comparison in figure it is known that the technical solution of the utility model is in 100Hz-800Hz within the scope of this, SPL value increases bright
It is aobvious.
The one group of data obtained after tested are as follows:
When first lid 10 is the plastic housing being made entirely of plastic, BL value is 0.655, when the first lid 10 uses this reality
When with the new solution of novel offer, BL value is 0.719, and comparison can obtain, and BL value increases 0.064, so as to cause SPL
It increases.In 500Hz, it is 0.86dB that SPL, which increases,.Using the technical solution of the utility model, product low frequency frequency response is promoted, is raised
Sound device playback time has simpler and more honest bass.
Preferably, the first lid 10 is made of plastics, and magnetic conductive board 40 is made of carbon steel.In the first lid 10 close to loudspeaker
At 301 position of magnetic bowl of monomer 30, plastics are replaced with permeability magnetic material such as carbon steel, the rest part of the first lid 10 is still with plastics system
At, so set, on the one hand manufacturing cost can be saved, on the other hand, but can make the overall weight of loudspeaker monomer 30 compared with
Gently.Of course, magnetic conductive board 40 also can be used other magnetic properties good material be made.
As shown in Figure 6 and Figure 7, the face of the separate loudspeaker monomer 30 of the first lid 10 is outer surface, and open-celled structure 101 wraps
It includes from appearance and is recessed the first step portion 102 to be formed and through-hole 103 towards 30 direction of loudspeaker monomer.The area of magnetic conductive board 40
Greater than the area of the cross section of 30 magnetic bowl of loudspeaker monomer, magnetic conductive board 40 is fixedly installed in first step portion 102, and covers completely
Lid open-celled structure 101 has gap between magnetic conductive board 40 and loudspeaker monomer 30, which forms a part of back cavity 2.
Preferably, through-hole 103 is extended towards the side of loudspeaker monomer 30 the first flange 104, the first flange 104
It is arranged around loudspeaker monomer 30.
As shown in figures 1 and 3, shock absorber part 50 is equipped between loudspeaker monomer 30 and magnetic conductive board 40, shock absorber part 50, which is located at, leads
In the gap that magnetic sheet 40 and loudspeaker monomer 30 are formed.Preferably, the area of shock absorber part 50 is less than the transversal of loudspeaker monomer 30
The area in face, and it is located at middle position of the loudspeaker monomer 30 towards the first lid 10.Shock absorber part 50 is set to middle position
It can make the vibration of loudspeaker monomer 30 in all directions that can be extenuated.
Shock absorber part 50 is preferably foam.It is to be appreciated that shock absorber part 50 can also be made of other damping materials, in not shadow
In the case where ringing the work of loudspeaker monomer 30, all it is possible.
With reference to Fig. 1 and Fig. 8, the second lid 20 is known as inner surface towards 30 face of loudspeaker monomer, backwards to loudspeaker monomer
30 faces are known as outer surface, and the inner surface of the second lid 20 has extended inwardly to form the second flange 201, the outer surface of the second lid 20
It is concaved with second step portion 202, the side card of the second lid 20 of direction of loudspeaker monomer 30 and is fixed on the second flange
In 201, cover board 60 is installed in second step portion 202, second step portion 202 is equipped with through-hole 206.Cover board 60 is steel disc, steel disc
Engage or is bonded in the second groove 202.Second lid 20 is made of plastics, and thickness is thicker, close to loudspeaker monomer 30
Plastics are nearby substituted for steel disc that is relatively thin and being able to satisfy intensity by position, can be increased the space of ante-chamber 3, be reached better acoustics
Effect.
Preferably, Fig. 3 and Fig. 8 are please referred to, the second lid 20 includes side wall 203 and goes out acoustic aperture 204 through side wall 203,
Acoustic aperture 204 is extended towards loudspeaker monomer 30 close to the side of loudspeaker monomer 30 and leads sound plate 205 out, leads sound plate 205
Inclination extends at the second flange 201, and acoustic aperture 204 is connected to ante-chamber 3 out.
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 (9)
1. a kind of loudspeaker, including forming the first lid of accommodating space and the second lid and being contained in the accommodating space
Loudspeaker monomer, the accommodating space is separated into ante-chamber and back cavity by the loudspeaker monomer, which is characterized in that described first
Lid corresponds to and is equipped with open-celled structure at the position of the loudspeaker monomer, is equipped with magnetic conductive board at the open-celled structure.
2. loudspeaker according to claim 1, it is characterised in that: first lid is made of plastics, the magnetic conductive board
It is made of carbon steel.
3. loudspeaker according to claim 1, it is characterised in that: the open-celled structure is completely covered by the magnetic conductive board.
4. loudspeaker according to claim 1, it is characterised in that: the separate loudspeaker monomer of first lid
Face is outer surface, the open-celled structure include from the first step portion that the appearance is recessed towards the loudspeaker monomer direction,
The magnetic conductive board is fixed on the first step portion.
5. loudspeaker according to claim 1, it is characterised in that: the loudspeaker monomer includes magnetic bowl, the aperture knot
Structure is set to first lid and corresponds at the position of the magnetic bowl, and the area of the magnetic conductive board is greater than the loudspeaker monomer
The area of the cross section of magnetic bowl.
6. loudspeaker according to claim 1, it is characterised in that: be equipped between the loudspeaker monomer and the magnetic conductive board
Shock absorber part.
7. loudspeaker according to claim 1, it is characterised in that: second lid has towards the loudspeaker monomer
Inner surface and away from the outer surface of the loudspeaker monomer, the inner surface, which extends internally, the second flange, the outer surface
It is concaved with second step portion, one end of the loudspeaker monomer is fixed with second flange, the second step
Cover board is installed in portion.
8. loudspeaker according to claim 7, it is characterised in that: the cover board is steel disc.
9. loudspeaker according to claim 1, it is characterised in that: second lid includes side wall and through the side wall
Go out acoustic aperture, it is described go out acoustic aperture be connected to the ante-chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822212364.2U CN209659585U (en) | 2018-12-26 | 2018-12-26 | Loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822212364.2U CN209659585U (en) | 2018-12-26 | 2018-12-26 | Loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209659585U true CN209659585U (en) | 2019-11-19 |
Family
ID=68518940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822212364.2U Expired - Fee Related CN209659585U (en) | 2018-12-26 | 2018-12-26 | Loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209659585U (en) |
-
2018
- 2018-12-26 CN CN201822212364.2U patent/CN209659585U/en not_active Expired - Fee Related
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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: 20191119 |