CN208540116U - A kind of active noise reduction earphone - Google Patents
A kind of active noise reduction earphone Download PDFInfo
- Publication number
- CN208540116U CN208540116U CN201821193180.XU CN201821193180U CN208540116U CN 208540116 U CN208540116 U CN 208540116U CN 201821193180 U CN201821193180 U CN 201821193180U CN 208540116 U CN208540116 U CN 208540116U
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- China
- Prior art keywords
- air
- front cover
- noise reduction
- active noise
- equalizer opening
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Abstract
The utility model provides a kind of active noise reduction earphone, not only adjustable air balance, but also is able to maintain the abundant low frequency of earphone.The active noise reduction earphone, including headset main body, headset main body include front cover, earmuff and rear cover, and earmuff and rear cover are located at the two sides of front cover, and front cover and earmuff surround earphone ante-chamber, and front cover and rear cover surround earphone back cavity, and front cover is equipped with air equalizer opening；Front cover is equipped with air pressure balance regulating member corresponding with air equalizer opening, and air pressure balance regulating member is the air-permeable mattress or the baffle to be opened/closed that automatically resets for covering air equalizer opening.The utility model active noise reduction earphone, since air pressure balance regulating member being arranged at air equalizer opening, then the aperture of air equalizer opening can increase without revealing low-frequency sound too much, when ante-chamber air velocity is larger, the aperture of air equalizer opening is bigger, discouraged pressure release is faster, avoid in earmuff strong air pressure compressing cause loudspeaker and the vibrating diaphragm of feedback microphones generate utter long and high-pitched sounds etc. it is bad.
Description
Technical field
The utility model belongs to earphone field, specifically a kind of active noise reduction earphone.
Background technique
Existing active noise reduction earphone is usually circumaural earphone, and ear-shield type active noise reduction earphone has air pressure balance design,
Come avoid earmuff wear after due to adjustment or extruding when earphone ante-chamber in air pressure become larger suddenly to wearer's ear-drum formed
Low frequency gas shock, and can alleviate or even avoid noise of uttering long and high-pitched sounds caused by gas shock feedback microphones.Existing ear-shield type has
Usually there are two types of mode, one is penetrating small by opening one in speaker front cover 1 for the air pressure balance design of source noise cancelling headphone
Hole (air equalizer opening 2) connection is extraneous, as shown in Figure 1, to carry out pressure release to the air pressure in earphone ante-chamber 3, keeps ante-chamber
It is balanced with ambient pressure；Another way is to carry out pressure release except chamber lid after being connected in ante-chamber using a root long gas-guide tube,
The leakage for being reduced low-frequency sound using the equivalent acoustic damping that the air column in gas-guide tube is formed simultaneously is lost, and is promoted the external world and made an uproar
The isolation capacity of sound.
Wherein first way, to reduce low-frequency sound leakage, the aperture of air equalizer opening is typically small, usually in 0.5-
1mm or so, aperture is small to lose heart that slow, air pressure balance is slow when causing ante-chamber interior air-flow speed fast, and strong air pressure will cause in earmuff
Loudspeaker and the vibrating diaphragm of feedback microphones are in non-primary equilbrium position, in turn result in the bad generation such as utter long and high-pitched sounds；For second
Kind mode, since acoustic damping size is related with the length of gas-guide tube, air guide length of tube is bigger, and acoustic damping is bigger, and is limited to earphone
The limitation of bulk, the limited length of gas-guide tube, the equivalent acoustic damping that air column is formed in such gas-guide tube is limited, then to low
The leakage of frequency sound makes up limited, makes earphone that can not have good bass to show.
Utility model content
The utility model provides a kind of active noise reduction earphone, not only adjustable air balance, but also is able to maintain the abundant of earphone
Low frequency.
To achieve the purpose that solve above-mentioned technical problem, the utility model is achieved using following technical scheme: a kind of
Active noise reduction earphone, including headset main body, the headset main body include front cover, earmuff and rear cover, the earmuff and the rear cover
The two sides of the front cover are located at, the front cover and the earmuff surround earphone ante-chamber, and the front cover and the rear cover surround
Earphone back cavity, the front cover are equipped with the air equalizer opening for making the earphone ante-chamber and extraneous conducting；The front cover be equipped with
The corresponding air pressure balance regulating member of the air equalizer opening, the air pressure balance regulating member are to cover the air equalizer opening
Air-permeable mattress or the baffle to be opened/closed that automatically resets.
The aperture of the air equalizer opening is 1-10mm.
The quantity of the air equalizer opening is 1-5, is uniformly distributed along the circumference on the front cover.
The material of the air-permeable mattress is compressible porous material.
The air-permeable mattress is an independent pad being installed on the front cover, and the material of the air-permeable mattress is compressible more
Porous materials.
The liner of annular is folded between the earmuff and the front cover, the material of the liner is compressible porous material
Material, a part of the inward flange of the liner cover the air equalizer opening to constitute the air-permeable mattress.
The liner of annular is folded between the earmuff and the front cover, the liner includes the hard substrate and arc of arc
The soft part of shape, the soft part and hard substrate pairing bonding circularize, and the material of the soft part is compressible more
Porous materials, the inward flange of the soft part cover the air equalizer opening to constitute the air-permeable mattress.
The material of the baffle that automatically resets is the elastomer of elastically deformable, one end of which is fixed on the front cover, separately
One end is free end.
The baffle that automatically resets includes rigid door body and the elastic reseting part for driving rigid door body reset.
Compared with prior art, the utility model active noise reduction earphone is correspondingly arranged on front cover with air equalizer opening
Air pressure balance regulating member, air pressure balance regulating member can be the air-permeable mattress or to be opened/closed automatic of covering air equalizer opening
Reseting baffle, when currently intracavitary air velocity is larger, since the permeation functions or ante-chamber interior air-flow pressure of air-permeable mattress make automatically
Reseting baffle, which is opened, carries out pressure release, the speed of automatic adjusument air balance；When air pressure balance or ante-chamber interior air-flow speed compared with
Hour, since the baffle closure of blocking or automatically reset of air-permeable mattress covers air equalizer opening, earphone is made to keep good low frequency effect
Fruit；Since air pressure balance regulating member being arranged at air equalizer opening, then the aperture of air equalizer opening compared with prior art can be into one
Step increases without revealing low-frequency sound too much, and when ante-chamber air velocity is larger, the aperture of air equalizer opening is bigger, loses heart
Pressure release is faster, avoids in earmuff strong air pressure compressing that loudspeaker and the vibrating diaphragm of feedback microphones is caused to generate and utters long and high-pitched sounds etc. no
It is good.
Detailed description of the invention
Fig. 1 is the headset main body axial, cross-sectional view of prior art active noise reduction earphone；
Fig. 2 is the headset main body axis of active noise reduction earphone when using individual air-permeable mattress in the utility model embodiment one
To sectional view；
Fig. 3 is active noise reduction ear when serving as air-permeable mattress by a part of the inward flange padded in the utility model embodiment one
The headset main body axial, cross-sectional view of machine；
Fig. 4 is the structural schematic diagram of whole ventilating liner in the utility model embodiment one；
Fig. 5 is the structural schematic diagram padded of locally breathing freely in the utility model embodiment one；
Fig. 6 is the headset main body axial, cross-sectional view of two active noise reduction earphone of the utility model embodiment；
Fig. 7 be two active noise reduction earphone of the utility model embodiment automatically reset baffle pressure release state when headset main body axis
To sectional view.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawings and detailed description.
The utility model active noise reduction earphone is headphone, including wearing bracket and positioned at wearing bracket both ends
Two headset main bodies are improved since the utility model relates only to the structure in headset main body, then in Fig. 2, Fig. 3, Fig. 6 and Fig. 7
The structural schematic diagram of headset main body is only provided, remaining structure does not repeat.
Embodiment one
Referring to Fig. 2 to Fig. 5, the present embodiment active noise reduction earphone, including headset main body 100, headset main body 100 include front cover
1, earmuff 2 and rear cover 3, earmuff 2 and rear cover 3 are located at the two sides of front cover 1, and front cover 1 and earmuff 2 surround earphone ante-chamber 4, front cover
1 and rear cover 3 surround earphone back cavity 5, front cover 1 is equipped with the air equalizer opening 6 for making earphone ante-chamber 4 and extraneous conducting；With existing skill
Unlike art, air pressure balance regulating member corresponding with air equalizer opening 6, this implementation are additionally provided in the present embodiment on front cover 1
Air pressure balance regulating member is the air-permeable mattress 7 for covering air equalizer opening 6 in example.
Due to being covered with air-permeable mattress 7 on air equalizer opening 6, blocking can be played to the low-frequency sound in earphone ante-chamber 4 and is made
With reducing the leakage of low-frequency sound, low-frequency sound is smaller in 4 interior air-flow speed of earphone ante-chamber, and earphone is made to keep good low frequency
Effect；It acts on simultaneously as there is the covering of air-permeable mattress 7 to block to reduce the leakage of low-frequency sound, then the aperture of air equalizer opening 6
The comparable prior art further increases, so air-permeable mattress 7 area increase, vapor permeation area increase, such as in the prior art its
Aperture is generally 0.5-1mm, and the aperture of air equalizer opening 6 can be with 1mm or more, such as 1-10mm in the present embodiment, and air pressure is flat
The aperture in weighing apparatus hole 6 is bigger, then when earphone is worn, since headset main body 100 covers on user ear, then makes earphone ante-chamber 4
When closing, closed 4 interior air-flow speed of earphone ante-chamber are larger, due to large aperture air equalizer opening 6 and the ventilative work of air-permeable mattress 7
With being convenient for quick pressure releasing, avoid strong air pressure compressing in earphone ante-chamber 4 that loudspeaker and the vibrating diaphragm of feedback microphones is caused to produce
It is raw utter long and high-pitched sounds etc. it is bad.
The quantity of air equalizer opening 6 can be 1-5, be uniformly distributed along the circumference on front cover 1, play pressure release, flat with multi-faceted
It weighs the effect of air pressure, is illustrated for an air equalizer opening 6 is set on front cover 1 in the present embodiment.
Further, the material of air-permeable mattress 7 is compressible porous material, such as foam or hot pressing sponge, can for
The individual pad that air equalizer opening 6 cooperates, by way of gluing or other fixed forms are installed on front cover 1, such as
Shown in Fig. 2.Compressible porous material has gas permeability but also has certain damping, can accelerate air pressure balance and reduce to the greatest extent low
The loss of frequency.
Due to the active noise reduction earphone of wear-type, the connection of earmuff 2 and front cover 1, which generallys use, to be disposed there between
Liner 8 is attached, i.e., the liner 8 of annular is folded between earmuff 2 and front cover 1, and the material for padding 8 is compressible porous material
Material, as shown in Figure 3 and Figure 4；Not increase structure member additionally, simplify package assembly, in the present embodiment, pads 8 inward flange
A part covering air equalizer opening 6, air-permeable mattress 7 is constituted by the part of the inward flange of liner 8, such as foam or hot pressing sea
The radial width increasing for padding 8 is enable inner edges to cover air equalizer opening 6, as shown in Figure 3 and Figure 4 by silk floss.Then at this time
Structure member using earphone itself is the air pressure balance regulating member that may make up earphone ante-chamber 4, increases structural portion without additional
Part and corresponding mounting structure.
Due to the liner 8 using whole ventilating, it is easy by structural member tolerances, there are decrement when assembly is inconsistent
Problem, to cause the different situation of low frequency leakage amount with a collection of earphone products.To solve this problem, excellent in the present embodiment
Locally ventilative liner 8 is selected in choosing, i.e., as shown in figure 5, liner 8 includes the hard substrate 8-1 of arc and the soft part 8- of arc
2, soft part 8-2 are connected with hard substrate 8-1 pairing and are circularized entirety, and soft part 8-2 is only selected compressible porous material, and
By the inward flange of soft part 8-2 covering air equalizer opening 6 to constitute air-permeable mattress 7, i.e., using the soft part of liner 8 in the present embodiment
For 8-2 as the air-permeable mattress 7 cooperated with air equalizer opening 6, the rest part for padding 8 is hard substrate 8-1, such as acrylic material
The plastic materials such as material, PC, ABS are formed by hard substrate 8-1 and are supported, reduce probabilistic compression, only by part
Gas permeable material carries out air pressure balance, the as far as possible consistency between guarantee product.Since the quantity of air equalizer opening 6 is not limited to
One, then entirely padded shared by soft part 8-2 8 ratio it is unlimited, whole air equalizer openings can be covered by being subject to, if air pressure
Balance hole 6 is multiple, and when scattering device, then the quantity of soft part 8-2 is not limited to one, can be with air equalizer opening 6 one
One is correspondingly arranged.
For the connection between soft part 8-2 and hard substrate 8-1 can be used the mode of gluing it is be bonded or using other
Clamping mode, is not particularly limited herein.
Embodiment two
What is different from the first embodiment is that referring to figure 6 and figure 7, the air pressure balance adjustment portion of the present embodiment active noise reduction earphone
Part is the baffle 9 to be opened/closed that automatically resets, and pressure release principle is, automatic multiple when earphone ante-chamber 4 is balanced with external air flow pressure
Position baffle 9 is in Normal Shutdown state, and when 4 interior air-flow quick washing of earphone ante-chamber, the baffle 9 that automatically resets opens quick pressure releasing
Make air pressure balance, is illustrated in figure 7 the baffle 9 that automatically resets and is opened the state for carrying out pressure release, gas by the gas shock of Fast Compression
After flattening weighing apparatus, baffle automatically resets to closed state.
It automatically resets there are many implementations of baffle 9, for example the elastomer of elastically deformable can be used in baffle itself, than
Such as rubber baffle or latex baffle, one end of which is fixed on front cover 1, the other end is free end, when 4 interior air-flow of earphone ante-chamber is quick
Impact automatically reset baffle 9 when, so that baffle is generated flexible deformation, free end deviates air equalizer opening 6 and then to open air pressure flat
Weighing apparatus hole 6, gas shock terminate rear baffle and are restored to initial closed state under the effect of its elastic-restoring force；Alternatively, as automatic
The another embodiment of reseting baffle 9 comprising rigid baffle body and the elastic reset portion for driving baffle body to reset
Part, specifically by taking elastic reseting part is spring as an example, baffle body one end is hinged on front cover 1, other end connecting spring
One end, the other end of spring are connected on front cover 1, and when 4 interior air-flow quick washing baffle body of earphone ante-chamber, baffle body is beaten
Air equalizer opening 6 is opened, while driving spring that flexible deformation, elastic recovery of the baffle body in spring after gas shock occurs
Initial closed state is restored under power effect.
Above embodiments are only to illustrate the technical solution of the utility model, rather than are limited；Although referring to before
Embodiment is stated the utility model is described in detail, it for those of ordinary skill in the art, still can be right
Technical solution documented by previous embodiment is modified or equivalent replacement of some of the technical features；And these
Modifications or substitutions, the utility model technical solution claimed that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of active noise reduction earphone, including headset main body, the headset main body includes front cover, earmuff and rear cover, the earmuff
The two sides of the front cover are located at the rear cover, the front cover and the earmuff surround earphone ante-chamber, the front cover and institute
It states rear cover and surrounds earphone back cavity, the front cover is equipped with the air equalizer opening for making the earphone ante-chamber and extraneous conducting；Its feature
Be: the front cover is equipped with air pressure balance regulating member corresponding with the air equalizer opening, the air pressure balance adjustment portion
Part is the air-permeable mattress or the baffle to be opened/closed that automatically resets for covering the air equalizer opening.
2. active noise reduction earphone according to claim 1, it is characterised in that: the aperture of the air equalizer opening is 1-
10mm。
3. active noise reduction earphone according to claim 2, it is characterised in that: the quantity of the air equalizer opening is 1-5,
It is uniformly distributed along the circumference on the front cover.
4. active noise reduction earphone according to claim 1, it is characterised in that: the material of the air-permeable mattress is compressible porous
Material.
5. active noise reduction earphone according to any one of claim 1 to 4, it is characterised in that: the air-permeable mattress is fixed
An independent pad on the front cover.
6. active noise reduction earphone according to any one of claim 1 to 3, it is characterised in that: the earmuff and it is described before
It is folded with the liner of annular between lid, the material of the liner is compressible porous material, one of the inward flange of the liner
Divide the covering air equalizer opening to constitute the air-permeable mattress.
7. active noise reduction earphone according to any one of claim 1 to 3, it is characterised in that: the earmuff and it is described before
Be folded between lid annular liner, it is described liner include arc hard substrate and arc soft part, the soft part and
The hard substrate pairing bonding circularizes, and the material of the soft part is compressible porous material, the inner edge of the soft part
Edge covers the air equalizer opening to constitute the air-permeable mattress.
8. active noise reduction earphone according to any one of claim 1 to 3, it is characterised in that: the baffle that automatically resets
For the elastomer of elastically deformable, one end of which is fixed on the front cover, the other end is free end.
9. active noise reduction earphone according to any one of claim 1 to 3, it is characterised in that: the baffle that automatically resets
Including rigid door body and the elastic reseting part for driving rigid door body to reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821193180.XU CN208540116U (en) | 2018-07-26 | 2018-07-26 | A kind of active noise reduction earphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821193180.XU CN208540116U (en) | 2018-07-26 | 2018-07-26 | A kind of active noise reduction earphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208540116U true CN208540116U (en) | 2019-02-22 |
Family
ID=65385090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821193180.XU Active CN208540116U (en) | 2018-07-26 | 2018-07-26 | A kind of active noise reduction earphone |
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| CN (1) | CN208540116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031119A1 (en) * | 2019-08-20 | 2021-02-25 | 深圳市魅动智能股份有限公司 | Noise-canceling headphones |
-
2018
- 2018-07-26 CN CN201821193180.XU patent/CN208540116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021031119A1 (en) * | 2019-08-20 | 2021-02-25 | 深圳市魅动智能股份有限公司 | Noise-canceling headphones |
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