CN212324350U

CN212324350U - Loudspeaker

Info

Publication number: CN212324350U
Application number: CN202020613912.7U
Authority: CN
Inventors: 颜君玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-01-08
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a loudspeaker, including loudspeaker body, loudspeaker body includes coil skeleton, and coil skeleton's top bonds the bottom that has dust cover and cone, and the top of cone bonds the interior limit that has the book ring, its characterized in that: the loudspeaker further comprises an air pressure coating, the air pressure coating is fixed on the loudspeaker body in an air-tight mode, an air-tight closed space is formed between the air pressure coating and the loudspeaker body or between the air pressure coating and the loudspeaker body, and high-pressure air is filled in the air-tight closed space. Has the following advantages: the peak valley of the loudspeaker sound pressure frequency response curve is effectively reduced, the loudspeaker sound pressure frequency response curve is very smooth, meanwhile, the loudspeaker distortion is greatly reduced, the product quality of the loudspeaker is improved, the high-frequency cut-off frequency of the loudspeaker is effectively widened, and the transient response characteristic of the loudspeaker is effectively improved.

Description

Loudspeaker

Technical Field

The utility model relates to a loudspeaker belongs to electro-acoustic technology field.

Background

The loudspeaker is a transducer which converts electrical signals into sound signals, the frequency response curve of the good loudspeaker is as flat as possible, the bandwidth is wide, and the lower the distortion in the frequency range, the better.

As shown in fig. 1, in the conventional speaker structure, the cone or diaphragm is firmly bonded to the coil of the rigid body, so that when the speaker is powered on, the coil in the magnetic field is acted by the electromagnetic force in the vertical direction to drive the cone or diaphragm to vibrate together at the equilibrium position, and the cone or diaphragm pushes the air to vibrate to make a sound. In the vertical movement process, the rigidity of the cone or the vibrating diaphragm and the coil is high, and the cone or the vibrating diaphragm is not easy to deform; the folding rings provide compliance, namely space is provided for the vertical movement of the cone or the diaphragm through the bending and stretching deformation of the folding rings. In fact, however, this process is not a simple piston movement (complete rigidity) since the cone or diaphragm is not a completely rigid body and deforms itself when subjected to different forces, which deformation of the cone or diaphragm may occur as shown in fig. 2.

Under the action of forces of different frequencies, the surface of the cone or the diaphragm is divided into a plurality of areas, the vibration of some areas is strengthened, the vibration of some areas is weakened, the phases of some adjacent areas are opposite, and the local vibration of the areas is called division vibration as shown in fig. 3.

The segmentation vibration cannot be completely avoided, and the current main measures are to suppress the segmentation vibration of the cone or the diaphragm and reduce the influence of the segmentation vibration as much as possible. The difference between the high and low range speakers is largely affected by the magnitude of the divided vibration.

The frequency response curve bandwidth of the output sound pressure of the product is narrowed due to the segmentation vibration, the frequency response curve is not smooth, and peaks and valleys are generated, namely, the sound at the peak position is large, and the sound at the valley position is small, as shown in fig. 4, the segmentation vibration is also an important reason for distortion of the loudspeaker.

In order to solve the adverse effect of the segmentation vibration of the cone or the diaphragm, the prior art is improved from the following directions:

1. the applicant ' Suzhou Shanghai electronics Limited company ' and publication No. CN201491245U ' are patents for solving the problem that the cone has insufficient rigidity after being flattened, and can generate segmentation vibration during vibration, so that the frequency response of a loudspeaker is not wide.

2. The patent of the applicant 'Shenzhen acoustic science and technology (Shenzhen) limited' and the publication number 'CN 109862482A' provides a ball-top material, a diaphragm and a loudspeaker, wherein the diaphragm of the ball-top material can raise the high-frequency cut-off frequency so as to solve the adverse effect caused by the segmentation vibration of a cone or the diaphragm.

3. The patent of applicant 'Zhejiang Tianle Heile electronics limited' and publication number 'CN 205596316U' provides a foamed PP sandwich sound cone which has high rigidity and can meet the use requirement of a high-power loudspeaker so as to overcome the defects of low rigidity and soft material of a single-layer cone.

4. The patent of applicant's "Yang smelt", publication No. CN2854989 "is to set up the radial distribution of the protruding strengthening rib strip and play a reinforcing role in loudspeaker cone, the intensity of the vibrating diaphragm is bigger, it is difficult to appear cutting apart the vibration, has reduced the distortion of the loudspeaker, make the frequency response flatter.

5. The applicant's patent of "Hangzhou West Esse acoustic Limited", publication No. CN202095079U ", discloses a reinforced cone for a speaker, which has high structural strength and increased low-frequency performance of the speaker, and aims to solve the problem of insufficient rigidity of the existing cone so as to make the frequency response of the speaker wider.

6. The applicant ' Ningbo city sunny electro-acoustic element industry Co., Ltd ', publication No. CN203251419U ' discloses that the whole strength of a cone of the.

7. The applicant ' Tianjin university of science and technology ', publication No. CN101626539A ' discloses a method for manufacturing a high-performance paper loudspeaker diaphragm material, and the elastic modulus and damping of a cone are improved by improving the loudspeaker diaphragm material.

In summary, to reduce the adverse effect caused by the split vibration of the speaker, the prior art mainly solves the problem by the following aspects:

firstly, the structural strength of the membrane or the cone is enhanced, the rigidity is improved, and the membrane or the cone is not easy to deform, and specific measures such as the design of reinforcing ribs are adopted on the membrane or the cone, and various strange reinforcing ribs (or reinforcing methods) are provided;

secondly, the center of the membrane or the cone is fixed and the phase plug is added, the damping glue is brushed to increase the damping, the damping glue can inhibit the segmentation vibration, but the vibration mass can be increased, so that the sound of the loudspeaker is reduced, and the bandwidth is narrowed;

thirdly, the rigidity of the membrane or the cone material is enhanced or the density of the material is reduced, if a fiber weaving cone is adopted, a layer of magnesium metal, beryllium metal and the like are brushed or plated outside the cone, the quality of the scheme is increased, and the cost is increased;

fourthly, a proper amount of carbon fiber is infiltrated into the paper pulp, and the carbon fiber is a composite material and has the characteristics of low density, high rigidity and moderate damping;

fifthly, the ball top is made of light and hard metal magnesium and beryllium, and the cost of the ball top is higher.

The ideal material or design to dampen membrane or cone separation vibrations is: firstly, the ratio of E/rho is large, E is the Young modulus of the material, and rho is the density of the material, namely the material is high in rigidity and low in density; and secondly the internal damping of the material is high. The material has good rigidity and is not easy to deform, the internal damping is high, the material can be quickly attenuated after vibration, the high-frequency cut-off frequency is high due to small mass, and the bandwidth is wider, but the actual situation of the prior art scheme is that the material with good rigidity has low internal damping, such as a metal vibrating diaphragm; materials with poor rigidity, such as rubber or plastic diaphragms, have high internal damping; measures for improving rigidity, such as increasing the thickness of the material, can simultaneously increase the quality of the product; the damping measures are improved, and the product quality is also improved by brushing damping glue; the product cost is high by adopting metal or composite material with high rigidity and low density, such as beryllium. Through changes in the membrane or cone shape design, such as the use of stiffeners, new segmentation vibrations are introduced. Therefore, the loudspeaker in the prior art scheme meets the bottleneck in the aspect of how to solve the segmentation vibration and further improving the performance of the loudspeaker.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above not enough, provide a speaker, cut apart the vibration and obtain effective suppression, will effectively reduce speaker sound pressure frequency response curve's peak valley, make speaker sound pressure frequency response curve very level and smooth, simultaneously, the speaker distortion also will reduce by a wide margin, has improved the product quality of speaker, and speaker high frequency cut-off frequency will effectively widen, and the transient response characteristic of speaker will effectively improve.

For solving the technical problem, the utility model discloses a following technical scheme:

the utility model provides a loudspeaker, is including realizing the speaker body of speaker main part function the speaker still includes the atmospheric pressure diolame, and atmospheric pressure diolame gas tightness is fixed on the speaker body, and atmospheric pressure diolame itself or with the speaker body be formed with the airtight space of gas tightness, and airtight space is inside to be filled with high-pressure gas.

Further, the speaker body includes coil skeleton, and the bottom that has dust cover and cone is bonded to coil skeleton's top, and the top of cone bonds the interior limit that has the collaring.

Further, the air pressure coating film covers and is fixed on the paper basin, the top edge and the bottom edge of the air pressure coating film are attached to the paper basin in an air-tight mode, and an air-tight closed space is formed between the air pressure coating film and the paper basin.

Furthermore, one side of the upper side part and the lower side part of the paper basin is covered with a fixed air pressure envelope, or both sides of the paper basin are covered with the fixed air pressure envelope.

Further, the paper basin is completely covered with the air pressure envelope, or a local area is covered with the air pressure envelope.

Furthermore, the air pressure envelope covers the upper part of the dust cover, the edge of the air pressure envelope is attached to the paper cone in an air-tight mode, and the edge of the air pressure envelope can be attached to the top of the paper cone or any position far away from the bottom of the paper cone.

Furthermore, the paper cone and the dust cover are replaced by an air pressure coating film, an air-tight closed space is formed in the air pressure coating film, the bottom of the air pressure coating film is bonded with the coil framework, and the top edge of the air pressure coating film is bonded with the inner edge of the folding ring through glue.

Furthermore, the loudspeaker body comprises a coil, the top of the coil is bonded with a dome, an air pressure coating film is arranged on the dome, the edge of the air pressure coating film is attached to the dome in an air-tight manner, an air-tight closed space is formed between the air pressure coating film and the dome, and high-pressure air is filled in the air-tight closed space.

Further, the loudspeaker body comprises a coil, the top of the coil is bonded with a coating support ring, an air pressure coating is arranged on the inner side of the coating support ring, the edge of the air pressure coating is fixed on the coating support ring, an air-tight closed space is formed by the air pressure coating, and high-pressure air is filled in the air-tight closed space.

Further, the envelope support ring is a rigid body.

A loudspeaker comprises a loudspeaker body for realizing the main function of the loudspeaker, wherein the loudspeaker body comprises a coil, the top of the coil is bonded with a dome, the dome is provided with a plurality of inflatable micro-tubes, the inflatable micro-tubes are airtight closed spaces, and high-pressure gas is filled in the airtight closed spaces.

Furthermore, the number of the ball tops is one, and the inflatable micro-tubes are arranged on one of the upper surface and the lower surface of each ball top, or the inflatable micro-tubes are arranged on the upper surface and the lower surface of each ball top.

Furthermore, the number of the ball tops is two, an inflatable micro tube is arranged between the two ball tops which are arranged in the radial direction, and the top end and the bottom end of the inflatable micro tube are fixed on the opposite surfaces of the two ball tops.

Furthermore, the number of the ball tops is three, the inflatable micro-tubes are arranged between every two of the three radially arranged ball tops, and the top ends and the bottom ends of the two groups of inflatable micro-tubes are fixed on opposite surfaces of the three radially arranged ball tops.

Further, the pressure of the high-pressure gas inside the airtight sealed space is not less than the external pressure of the airtight sealed space.

Further, the high-pressure gas is one or a combination of several gases of inert gas, carbon dioxide CO2, nitrogen N2, carbon monoxide CO, methane CH4, hydrogen H2 and air.

Further, the air pressure coating material is one of a high-barrier plastic film, an engineering plastic film, a metal material thin layer, a composite material film and a surface metal layer-plated film.

The utility model adopts the above technical scheme, compare with prior art, have following technological effect:

by adopting the air pressure coating structure, high-pressure air with certain pressure intensity is filled in the closed space, so that the high-pressure air has certain rigidity, and the rigidity is higher as the pressure intensity is higher; because a gas with low density, such as helium, is preferred, the gas pressure envelope structure has much lower density than most materials in nature; the high-pressure air has excellent damping characteristics; the present application thus satisfies in principle two requirements for an ideal damping membrane or cone divided vibrating material: firstly, the E/rho ratio is large, and secondly, the internal damping of the material is high. Because of the advantage of this structural feature, the stiffness requirements for the speaker cone are reduced and the mass of the cone can be reduced.

Therefore, the quality problem of the loudspeaker product is greatly reduced, the high-frequency cut-off frequency of the loudspeaker is effectively widened, and the transient response characteristic of the loudspeaker is effectively improved (the smaller the mass of the vibration system is, the smaller the inertia is, the better the transient characteristic is); the effective suppression of the segmentation vibration effectively reduces the peak valley of the sound pressure frequency response curve of the loudspeaker, so that the sound pressure frequency response curve of the loudspeaker is very smooth; at the same time, the distortion will be greatly reduced.

Meanwhile, the structure of the device is simple, the material cost is low, and the device is very suitable for large-scale industrial production.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic cross-sectional structure diagram of a cone speaker in the background art of the present invention;

FIG. 2 is a schematic view of a surface structure of a cone speaker cone subjected to bending deformation in the background art of the present invention;

fig. 3 is a schematic diagram of the loudspeaker diaphragm in the background art of the present invention dividing the vibration at different frequencies;

FIG. 4 is a graph of the frequency response of a loudspeaker with split vibration according to the background art of the present invention;

fig. 5 is a schematic cross-sectional structure diagram of a cone speaker according to embodiment 1 of the present invention;

fig. 6 is a schematic cross-sectional structure diagram of a cone speaker according to embodiment 2 of the present invention;

fig. 7 is a schematic cross-sectional structure diagram of a cone speaker according to embodiment 3 of the present invention;

fig. 8 is a schematic cross-sectional structure diagram of a cone speaker according to embodiment 4 of the present invention;

fig. 9 is a schematic cross-sectional structure diagram of a cone speaker according to embodiment 5 of the present invention;

fig. 10 is a schematic cross-sectional view of a speaker according to embodiment 6 of the present invention;

fig. 11 is a schematic sectional view of an arc dome protruding upward in embodiment 6 of the present invention;

fig. 12 is a schematic sectional view of an arc dome protruding downward in embodiment 6 of the present invention;

fig. 13 is a schematic cross-sectional view of a speaker according to embodiment 7 of the present invention;

fig. 14-17 are schematic sectional views of the top of the air-filled micro-tube structure in embodiment 8 of the present invention.

Detailed Description

Embodiment 1, as shown in fig. 5, a speaker, including the speaker body, the speaker body can realize the main part function that the speaker changes the electrical signal into sound signal, the speaker body includes magnetic shield 2, be equipped with magnet 1 in the magnetic shield 2, be equipped with magnetic conduction piece 8 on the magnet 1, be equipped with coil skeleton 13 in the magnetic gap that magnetic shield 2 and magnetic conduction piece 8 formed, coil skeleton 13's surface adheres to there is coil 3, coil skeleton 13's top bonds the bottom that has dust cover 7 and cone 5, dust cover 7 covers and is used for blockking the dust in the top of magnet 1, cone 5's top bonds the interior limit that has folding ring 11, the top of magnetic shield 2 is connected with basin frame 6, basin frame 6 is located cone 5's below, be equipped with centering brace 4 between basin frame 6 and the coil skeleton 13, centering brace 4 bonds fixedly with coil skeleton 13, be equipped with blank holder 12 between basin frame 6 and the outside of folding ring 11.

The paper cone 5 is connected with an air pressure coating film 9, the top edge and the bottom edge of the air pressure coating film 9 are respectively attached to the top edge and the bottom edge of the paper cone 5 in an air-tight mode, the paper cone 5 is completely covered with the air pressure coating film 9 to form an air-tight closed space, and high-pressure air 10 is filled in the closed space.

The air pressure envelope 9 is an airtight sealing material, and in this embodiment, a high-barrier plastic film is preferably used, the high-barrier plastic film is formed by extruding a material with a strong gas barrier property and polyolefin with a strong heat-sealing property and a strong moisture barrier property simultaneously, and is a multilayer film, and the film can play a good airtight function, such as nylon (MKD6), a PVA-coated high-barrier plastic film, PVDC (polyvinylidene chloride), EVOH (ethylene/vinyl alcohol copolymer), and the like.

The airtight sealing material may also be various engineering plastic films such as a polyester film (PET), a low density polyethylene film (LDPE), a cast polypropylene film (CPP), a nylon film, etc.; but also can be a thin layer of metal material, such as beryllium, magnesium, and the like, or an alloy with other metals; composite films, such as various woven material film composite plastic films; various film surfaces may also be plated with metal layers such as aluminum, silicon oxide, etc. to achieve better hermeticity.

The high pressure gas 10 is preferably a gas with low density and high stability, such as various inert gases like He and helium, carbon dioxide CO2, nitrogen N2, carbon monoxide CO, methane CH4, hydrogen H2, and the like, and may be air, or a combination of one or more of the foregoing gases.

The pressure intensity of the high-pressure gas 10 in the airtight sealed space is not less than the external pressure intensity of the airtight sealed space, and is preferably higher than the external pressure intensity, so that the air pressure envelope 9 and the paper cone 5 wrapping the airtight sealed space have certain rigidity, and the higher the air pressure intensity in the airtight sealed space is, the higher the rigidity of the air pressure envelope 9 and the paper cone 5 is.

The gas or air itself has damping properties, and the divided vibration of the cone 5 is damped by the gas in the closed space, which is negligible when it is expressed on the air pressure envelope surface 9 that pushes the outside air to sound. Thus, the requirement on the rigidity of the cone is reduced, so that the mass of the cone can be thinned or reduced, and the smaller the overall vibration mass of the loudspeaker (mainly comprising the membrane or the cone, the coil and the coil framework), the better the transient characteristic is.

The air pressure envelope 9 can also be made of the same material as the cone 5, the two ends of the air pressure envelope are sealed to form an air-tight sealed space, and high-pressure gas 10 is filled in the sealed space.

The air pressure envelope 9 can be arranged on the lower side part or the upper side part of the paper cone 5 and can play a similar effect

In conclusion, the air pressure envelope structure of the embodiment meets two requirements of an ideal inhibiting film or a paper cone for cutting the vibration material at the same time: firstly, the E/rho ratio is large, and secondly, the internal damping of the material is high.

Example 2

The same contents as those in embodiment 1 have already been discussed in detail in embodiment 1, and are not described herein again, and the present embodiment is modified as follows with respect to embodiment 1:

as shown in fig. 6, the lower side portion and the upper side portion of the paper cone 5 are provided with air pressure envelopes 9, the air pressure envelopes 9 and the upper and lower sides of the paper cone 5 form an air-tight sealed space, and high-pressure air 10 is filled into the sealed space, so that the paper cone is higher in rigidity and higher in damping when the air pressure envelopes are arranged on the upper side portion and the lower side portion of the paper cone.

Example 3

as shown in fig. 7, the partial area of the paper cone 5 is covered with the air pressure envelope 9, the top edge and the bottom edge of the air pressure envelope 9 are airtightly attached to the paper cone 5 to form an airtight sealed space, and the high-pressure air 10 is filled in the airtight sealed space, so that the air pressure envelope 9 and the partial area of the paper cone 5 covered by the air pressure envelope form a partial reinforced area, which can achieve the similar effect as that of embodiment 1.

The pneumatic envelope 9 may be disposed on the upper side or the lower side of the cone 5, or the pneumatic envelope 9 may be disposed on both the upper side and the lower side of the cone 5, so that the rigidity is stronger.

Example 4

as shown in fig. 8, the air pressure envelope 9 is covered on the dust cover 7, the edge of the air pressure envelope 9 is airtightly attached to the paper cone 5, the edge of the air pressure envelope 9 can be attached to the top of the paper cone 5 or any position far from the bottom, an airtight sealed space is formed between the air pressure envelope 9, the paper cone 5 and the dust cover 7, and the inside of the airtight sealed space is filled with the high-pressure gas 10, thereby achieving an effect similar to that of embodiment 1.

Example 5

as shown in fig. 9, in the embodiment, the paper cone 5 and the dust cover 7 are replaced by the air pressure envelope 9, the air pressure envelope 9 itself forms an airtight sealed space, the air pressure envelope 9 is filled with the high pressure gas 10, the bottom of the air pressure envelope 9 is bonded to the coil frame 13, and the top edge of the air pressure envelope 9 and the inner edge of the folding ring 11 are bonded together by the adhesive, so that the air pressure envelope 9 is completely used for replacing the paper cone with high density and large mass, and the vibration mass is further reduced. Under the action of high-pressure gas, the rigidity can be further improved, and the damping characteristic is better.

Example 6

as shown in fig. 10, the speaker body includes a magnetic cover 2, a magnet 1 is disposed in the magnetic cover 2, a magnetic conductive sheet 8 is disposed on the magnet 1, a coil 3 is disposed in a magnetic gap formed by the magnetic cover 2 and the magnetic conductive sheet 8, a dome 20 is bonded to the top of the coil 3, a tub frame 6 is disposed outside the magnetic cover 2, a front cover 21 is disposed on the top of the tub frame 6, a plurality of sound holes 22 are disposed on the front cover 21, a corrugated rim 11 is bonded between the tub frame 6 and the top of the coil 3, the dome 20 is generally formed by a sandwich structure of aluminum foil + polymethacrylimide foam (PMI) + aluminum foil, but the high-frequency cutoff frequency of the aluminum foil dome of the sandwich structure is generally within 8.5KHz, and cannot meet the requirement of the acoustic performance of the high-pitched part of the speaker, therefore, in this embodiment, an air pressure envelope 9 is disposed on the upper surface of the dome 20, and the edge of the air-, an air-tight sealed space is formed between the air pressure envelope 9 and the ball top 20, and the high-pressure gas 10 in the embodiment 1 is filled in the air-tight sealed space, so that the strength of the ball top is effectively enhanced, meanwhile, the internal sealed gas can also inhibit the ball top from being divided and vibrated, and the air is pushed to make a sound by the air pressure envelope 9 under the driving of the coil and the ball top.

The dome 20 may also be made of a hard, low density metal such as aluminum, magnesium, beryllium, etc., or several metal alloys such as magnesium-lithium alloy, lithium-beryllium alloy, etc. The dome may also be carbon fiber, or a composite with several of the aforementioned metals.

As shown in fig. 11, the shape of the dome 20 may be various, and the dome 20 may be an upwardly convex arc shape, and a hermetically sealed space is formed between the upwardly convex arc surface 23 of the dome 20 and the air pressure envelope 9, and the high pressure gas 10 described in embodiment 1 is filled in the sealed space.

As shown in fig. 12, the dome 20 may also be a downwardly convex arc, and a gas-tight sealed space is formed between the downwardly convex arc surface 24 of the dome 20 and the gas pressure envelope 9, and the sealed space is filled with the high-pressure gas 10 described in example 1.

The dome 20 may be replaced with a pneumatic capsule 9, that is, a hermetically sealed space is formed entirely by the pneumatic capsule 9, and the high-pressure gas 10 described in embodiment 1 is filled in the hermetically sealed space, and the lower surface of the pneumatic capsule 9 is bonded to the top of the coil 3.

Example 7

The same contents as those in embodiment 6 have already been discussed in detail in embodiment 6, and are not described herein again, and the embodiment is modified as follows with respect to embodiment 6:

as shown in fig. 13, an envelope support ring 25 is bonded to the top of the coil 3, a pneumatic envelope 9 is provided inside the envelope support ring 25, the edge of the pneumatic envelope 9 is fixed to the envelope support ring 25, the envelope support ring 25 is a rigid body, the envelope support ring 25 is preferably a hollow structure, and in order to increase the rigidity of the envelope support ring 25, the envelope support ring 25 may be filled with the high-pressure gas 10 described in embodiment 1.

The cross section of the envelope support ring 25 can be rectangular, circular, triangular, regular hexagonal, L-shaped, C-shaped and other geometric shapes.

Example 8

the dome 20 is provided with a plurality of transversely arranged inflation micro-tubes 26, the inflation micro-tubes are airtight sealed spaces, the inflation micro-tubes 26 can be made of materials for preparing the air pressure envelope 9, and the inflation micro-tubes 26 are filled with high-pressure gas 10 filled in the air pressure envelope 9.

As shown in fig. 14, the number of the dome 20 is one, and an inflation microtube 26 is disposed on one of the upper and lower surfaces of the dome 20.

As shown in fig. 16, the number of the dome 20 is one, and the air inflation microtubes 26 are arranged on the upper and lower surfaces of the dome 20.

As shown in fig. 15, the number of the ball tops 20 is two, an inflation microtube 26 is arranged between two radially arranged ball tops 20, and the top end and the bottom end of the inflation microtube 26 are fixed on the opposite surfaces of the two ball tops 20.

As shown in fig. 17, the number of the ball tops 20 is three, the three ball tops 20 arranged in the radial direction are provided with the air inflation micro tubes 26 between every two, and the top ends and the bottom ends of the two groups of air inflation micro tubes 26 are fixed on the opposite surfaces between the three ball tops 20 arranged in the radial direction.

The air pressure envelope is not only suitable for the loudspeaker with the structure, but also suitable for loudspeakers with other principles, such as static, plane diaphragm, moving iron, moving magnetic principle and the like.

The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A kind of loudspeaker, including the loudspeaker body which realizes the function of loudspeaker body, characterized by that: the loudspeaker also comprises an air pressure envelope (9), the air pressure envelope (9) is fixed on the loudspeaker body in an air-tight mode, an air-tight closed space is formed between the air pressure envelope (9) and the loudspeaker body or between the air pressure envelope (9) and the loudspeaker body, and high-pressure gas (10) is filled in the air-tight closed space.

2. A loudspeaker according to claim 1, wherein: the loudspeaker body comprises a coil framework (13), the top of the coil framework (13) is bonded with the bottoms of a dust cover (7) and a cone (5), and the top of the cone (5) is bonded with the inner edge of a folding ring (11).

3. A loudspeaker according to claim 1, wherein: the air pressure coating film (9) is covered and fixed on the paper basin (5), the top edge and the bottom edge of the air pressure coating film (9) are attached to the paper basin (5) in an air-tight mode, and an air-tight closed space is formed between the air pressure coating film (9) and the paper basin (5).

4. A loudspeaker according to claim 3, wherein: one side of the upper side part and the lower side part of the paper basin (5) is covered with a fixed air pressure envelope (9), or both sides of the paper basin are covered with the fixed air pressure envelope (9).

5. A loudspeaker according to claim 3, wherein: the paper basin (5) is completely covered with the air pressure envelope (9), or a local area is covered with the air pressure envelope (9).

6. A loudspeaker according to claim 2, wherein: the air pressure envelope (9) covers the dust cover (7), the edge of the air pressure envelope (9) is attached to the paper basin (5) in an air-tight mode, the edge of the air pressure envelope (9) can be attached to the top of the paper basin (5) or any position far away from the bottom of the paper basin, and an air-tight sealed space is formed among the air pressure envelope (9), the paper basin (5) and the dust cover (7).

7. A loudspeaker according to claim 2, wherein: the paper cone (5) and the dust cover (7) are replaced by air pressure envelopes (9), air-tight closed spaces are formed in the air pressure envelopes (9), the bottoms of the air pressure envelopes (9) are bonded with the coil framework (13), and the top edges of the air pressure envelopes (9) are combined with the inner edges of the folding rings (11).

8. A loudspeaker according to claim 1, wherein: the loudspeaker body comprises a coil (3), a dome (20) is bonded to the top of the coil (3), an air pressure envelope (9) is arranged on the dome (20), the edge of the air pressure envelope (9) is combined with the dome (20) in an air-tight mode, and an air-tight closed space is formed between the air pressure envelope (9) and the dome (20).

9. A loudspeaker according to claim 1, wherein: the loudspeaker body comprises a coil (3), an envelope supporting ring (25) is bonded to the top of the coil (3), an air pressure envelope (9) is arranged on the inner side of the envelope supporting ring (25), the edge of the air pressure envelope (9) is fixed on the envelope supporting ring (25), and an air-tight sealed space is formed in the air pressure envelope (9).

10. A loudspeaker according to claim 9, wherein: the enveloping supporting ring (25) is a rigid body.

11. A loudspeaker according to any one of claims 1 to 9, wherein: the air pressure envelope (9) is made of one of a high-barrier plastic film and a metal material thin layer.

12. The utility model provides a loudspeaker, is including realizing the speaker body of speaker main part function, and the speaker body includes coil (3), and the top of coil (3) bonds there is dome (20), its characterized in that: the dome (20) is provided with a plurality of air-filled micro-tubes (26), the air-filled micro-tubes (26) are air-tight closed spaces, and high-pressure gas (10) is filled in the air-tight closed spaces.

13. A loudspeaker according to claim 12, wherein: the number of the ball tops (20) is one, and the inflatable micro-tubes (26) are arranged on one of the upper surface and the lower surface of the ball tops (20), or the inflatable micro-tubes (26) are arranged on the upper surface and the lower surface of the ball tops.

14. A loudspeaker according to claim 12, wherein: the number of the spherical tops (20) is two, the inflation micro-tube (26) is arranged between the two spherical tops (20) which are arranged in the radial direction, and the top end and the bottom end of the inflation micro-tube (26) are fixed on the opposite surfaces of the two spherical tops (20).

15. A loudspeaker according to claim 12, wherein: the number of the ball tops (20) is three, the inflatable micro-tubes (26) are arranged between every two of the three radially arranged ball tops (20), and the top ends and the bottom ends of the two groups of inflatable micro-tubes (26) are fixed on opposite surfaces among the three radially arranged ball tops (20).

16. A loudspeaker according to any one of claims 1 or 12, wherein: the pressure of the high-pressure gas (10) inside the gas-tight closed space is not less than the pressure outside the gas-tight closed space.

17. A loudspeaker according to any one of claims 1 or 12, wherein: the high-pressure gas (10) is one of inert gas, carbon dioxide CO2, nitrogen N2, carbon monoxide CO, methane CH4, hydrogen H2 and air.