CN215647339U - Loudspeaker and sound cavity structure - Google Patents

Abstract

The utility model relates to a sound cavity structure, which comprises a front cavity component; the front cavity assembly comprises a bearing seat and a mesh decorating part matched with the bearing seat; the mesh trim includes a mesh portion; the mesh part comprises a mesh surface provided with a plurality of horn holes and at least one barrier wall for separating the mesh surface, and the barrier wall divides the mesh surface into a plurality of small areas. The sound cavity structure can change the transmission wavelength of sound in the sound cavity structure, avoid the frequency of standing wave, prevent distortion, especially prevent high-frequency distortion, and reduce noise.

Description

Loudspeaker and sound cavity structure

Technical Field

The utility model relates to the field of acoustoelectrics, in particular to a loudspeaker and a sound cavity structure.

Background

With the progress of science and technology, terminal products also seek better sound quality, and due to the influence of the deeper front cavity of the horn cavity, the phenomenon of serious high-frequency distortion is often generated, noise is generated, the sound restoration is greatly influenced, and great unpleasant feeling is brought to the sound experience of users. The prior art usually compensates by sacrificing part of sound size, and the purpose of sound quality and volume cannot be achieved.

Fig. 1 and 2 show a loudspeaker of the prior art having a deep front cavity structure. The front cavity structure includes a mesh decoration 32a for transmitting and improving sound quality, the mesh part 320a in the mesh decoration 32a is not provided with partitions, namely, the area is not divided into small areas, sound transmission process, longer sound wave can generate one or more sound wave combinations, different sound wave coupling effects are generated, sound distortion is generated, especially high frequency distortion is serious, and noise is generated. Therefore, how to improve the structural design of the portion and reduce the high frequency distortion becomes an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a speaker and a sound cavity structure, which are provided to overcome the above-mentioned drawbacks of the prior art.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a speaker and sound cavity structure is provided, which comprises a front cavity component; the front cavity assembly comprises a bearing seat and a mesh decorating part matched with the bearing seat;

the mesh trim includes a mesh portion; the mesh part comprises a mesh face provided with a plurality of holes and at least one barrier wall arranged on the mesh face, and the barrier wall divides an area above the mesh face into a plurality of small areas.

In some embodiments, the barrier wall is disposed transversely to the mesh face.

In some embodiments, two of the barrier ribs are disposed on the mesh surface at an interval, namely a first barrier rib and a second barrier rib, which divide the area above the mesh surface into three small areas.

In some embodiments, the sound cavity structure comprises a dust screen; the mesh decorating part also comprises a supporting wall which is arranged outside the mesh part in a protruding way; the dustproof net cover is arranged on the supporting wall; the dustproof net, the supporting wall and the mesh parts define a sound cavity structure together, and the sound cavity structure is divided into a plurality of small-area sound cavities by the blocking wall.

In some embodiments, the mesh trim includes a transfer aperture opening in the support wall; the transmission hole cuts the supporting wall into a first supporting wall and a second supporting wall; the first barrier wall and the second barrier wall are opposite to the side wall surfaces of the sound cavity structure and are provided with notches, the first barrier wall is close to the transmission hole and is provided with a notch, and the second barrier wall is far away from the transmission hole and is provided with a notch.

In some embodiments, the first and second support walls are symmetrically disposed; the first supporting wall, the second supporting wall and the dust screen define the transmission hole together.

In some embodiments, the mesh decorative piece further comprises an attachment portion extending outwardly along the mesh portion for mounting the mesh decorative piece on the carrier; the support wall separates the mesh part from the attachment part and is arranged around the mesh part; the bearing seat comprises a second mounting cavity in which the mesh-sharing decorating part is arranged; the pasting part is bonded on the bottom wall surface of the bearing seat in a gum mode.

In some embodiments, the mesh trim piece is integrally formed with the carrier seat.

In some embodiments, the bearing seat comprises a panel, and the second installation cavity is arranged through the panel;

the shape and size of the second mounting cavity are equivalent to the shape and size of the mesh part of the mesh decorating part.

A loudspeaker comprises a loudspeaker unit and further comprises the sound cavity structure.

The loudspeaker and the sound cavity structure have the following beneficial effects:

by carrying out region division on the mesh part in the mesh decorating part in the sound cavity structure to change the transmission wavelength of sound in the mesh decorating part, the frequency of standing wave is avoided, the generation of distortion is prevented, particularly the generation of high-frequency distortion is prevented, and the noise is reduced.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic diagram of a loudspeaker in the prior art;

FIG. 2 is a schematic diagram of the front chamber shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a speaker in some embodiments of the utility model;

FIG. 4 is a schematic diagram of a speaker in some embodiments of the utility model;

FIG. 5 is a schematic view of the mesh trim part of FIG. 4;

FIG. 6 is another directional schematic view of the mesh trim piece of FIG. 4.

Detailed Description

For a clearer understanding of the technical features, objects, and effects of the present invention, reference will now be made to the accompanying drawings.

It is to be understood that the terms upper, lower, and intermediate are used in the positional relationship illustrated in the accompanying drawings for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the elements or components referred to must have a particular orientation, be constructed or operated in a particular orientation, and are not to be construed as limiting the present invention.

Fig. 3 and 4 show a speaker according to some embodiments of the present invention, which is used in an intercom, a mobile phone, a stereo set, or other devices that need to play transmitted sound, and includes a speaker unit 10, a front cavity assembly 30, and a dust screen 20. The horn unit 10 in some embodiments is circular and fits over the front cavity assembly 30 for playing transmitted sound waves. The dust screen 20 is in a fan shape, is located between the front cavity assembly 30 and the speaker unit 10, and covers the front cavity assembly 30, and is used for preventing foreign matters such as dust or other impurities from entering the speaker, thereby playing a protective role and simultaneously having a function of adjusting tone quality. The front chamber assembly 30 is in a shape of a circular shell, and is used for the common speaker unit 10 and the dust screen 20 to cooperate with each other, so as to perform the functions of transmitting sound, adjusting tone quality, amplifying or zooming sound, and the like.

In some embodiments, the horn unit 10 includes a horn and a horn carrier for carrying the horn. The loudspeaker is wrapped in the loudspeaker carrier and used for playing sound; the horn carrier is in the shape of a pie with a cavity that fits into the horn cavity in the front cavity assembly 30.

In some embodiments, the front cavity assembly 30 includes a carrier seat 31 and a mesh decoration 32 fitted on the carrier seat 31. The carrier 31 is in the shape of a circular shell, and can be used for carrying and forming one or more sound cavities for adjusting sound effects together with the dust screen 20, the speaker unit 10 and the mesh decoration 32. The mesh decoration 32 has the function of adjusting the tone quality, can be assembled on the bearing seat 31 after being formed separately, and also can be formed integrally with the bearing seat 31. In some embodiments, the separately formed mesh decoration 32 may be attached between the carrier base 31 and the speaker unit 10 by means of a back adhesive.

The carrier 31 in some embodiments may include a panel 310 and a first mounting cavity 311 protruding from the panel 310. The panel 310 has a circular plate shape, and the first mounting cavity 311 has a cylindrical shape, for the speaker unit 10 to be mounted thereon. Preferably, the first mounting cavity 311 is disposed along the center of the panel 310, and the central axis of the first mounting cavity 311 passes through the center of the panel 310. It is understood that the inner diameter of the first mounting cavity 311 is equal to or slightly larger or slightly smaller than the outer diameter of the horn unit 10, so that the horn unit 10 can be smoothly fitted in the first mounting cavity 311.

The bearing seat 31 in some embodiments may further include a speaker mounting step 312 annularly disposed along the first mounting cavity 311 for the speaker unit 10 to be disposed thereon, and may prevent the speaker unit 10 from sliding downward and affecting the size of the sound cavity, and thus affecting the sound quality of the speaker. It can be understood that the horn mounting step 312 protrudes annularly on the inner wall surface of the first mounting cavity 311, that is, the horn mounting step 312 divides the first mounting cavity 311 into a mounting cavity located at the upper part of the horn mounting step 312 and a sound cavity located at the lower part of the horn mounting step 312, and it can be understood that the inner diameter of the first mounting cavity 311 is larger than that of the sound cavity, and the difference between the inner diameters is equivalent to the width of the mesa of the second mounting step 312.

In some embodiments, the carrier 31 may further include a second mounting cavity 313 along a bottom wall surface of the first mounting cavity 311 for disposing the co-meshed decoration 32 thereon. The second mounting cavity is disposed through the panel 310. It is understood that the second mounting cavity 313 has a shape and size corresponding to the shape and size of the mesh part 320 of the mesh decoration 32 such that the mesh part 320 is disposed therein. Preferably, the second mounting cavity 311 is disposed along the edge of the bottom wall surface, even though the arc-shaped edge of the second mounting cavity 311 is attached to the edge of the bottom wall surface.

Fig. 5 illustrates mesh trim 32 in some embodiments, which may include a mesh portion 320, an attachment portion 321 extending outwardly along mesh portion 320, a support wall 322 separating mesh portion 320 from attachment portion 321 and disposed about mesh portion 320, and a transfer aperture 323 opening in support wall 322.

The mesh part 320 has functions of transmitting sound and adjusting sound quality.

The attaching portion 321 is used for mounting the mesh decoration 32 on the carrier 31, and preferably, the attaching portion 321 can be adhered to the bottom wall surface of the carrier 31 by means of a back adhesive. The size of the attaching portion 321 can satisfy the installation effect, so as to save materials and cost.

The attaching portion 321 is shaped like a panel so as to be attached to the carrying seat 31. Preferably, the attaching portion 321 is attached to the bottom wall surface of the bearing seat 31 by means of a back adhesive, i.e. a plane opposite to the bottom wall surface of the first mounting cavity 311. Preferably, the attached portion is closely attached to the bottom wall surface of the carrier seat 31 and is located in the bottom wall surface.

The supporting wall 322 is protruded on the plane of the mesh part 320 and is perpendicular to the plane, the supporting wall 322 is arc-shaped and holds the mesh part 320 therein, and the size of the outer edge shape is equal to the size of the arc of the second installation cavity 313, which is convenient for adaptive installation. The supporting wall 322 is used for covering the dust screen 20, and the dust screen 20, the supporting wall 322 and the mesh hole 320 define the sound cavity structure 40 together, so as to adjust the transmitted sound and improve the sound quality. In some embodiments, transfer aperture 323 bisects support wall 322 into first support wall 3220 and second support wall 3221. Preferably, the first and second supporting walls 3220 and 3221 are symmetrically arranged and both have a hand shape to cradle the mesh portion 320 therein. A part or all of the space between the first supporting wall 3220 and the second supporting wall 3221 is the transmission hole 323.

The first supporting wall 3220 and the second supporting wall 3221 are spaced apart from each other to define the transmission hole 323 together with the dust screen 20. The sound played from the speaker unit 10 enters the sound chamber structure 40 through the transmission hole 323 and acts through the sound chamber structure 40 to adjust the sound quality and prevent the original sound from being excessively changed and distorted.

In some embodiments, as shown in fig. 4 and 5, the mesh portion 320 includes a mesh surface 3201 having a plurality of speaker holes and one or more blocking walls 3202 separating the mesh surface 3201, the blocking walls 3202 divide the mesh surface 3201 into a plurality of regions, i.e., the sound cavity structure 40 into a plurality of small-region sound cavities, which have a key role of blocking sound relative to the sound cavity structure 40, changing front cavity acoustic impedance, and preventing excessive high-frequency distortion.

In some embodiments, the blocking walls 3202 are disposed along the mesh surface 3201 in a transverse direction, so that the mesh surface 3201 can be divided into a plurality of small regions to confine the sound to oscillate in a small space, change the wavelength of the sound, avoid the frequency of the standing waves, and prevent the distortion.

In some embodiments, two barrier ribs 3202, i.e., a first barrier rib and a second barrier rib, may be laterally spaced on the mesh surface 3201 to divide the mesh surface 3201 into three small regions to improve the sound effect. The first blocking wall and the second blocking wall are provided with notches corresponding to the side wall surfaces of the sound cavity structure 40, specifically, the first blocking wall is provided with a notch near the transmission hole 323, and the second blocking wall is provided with a notch far from the transmission hole 323. The above-mentioned gaps can be used for transmitting sound waves. Of course, the first blocking wall and the second blocking wall may have one or more notches or no notches corresponding to the side wall surfaces of the sound cavity structure 40. Of course, the present invention does not limit the number of the blocking walls 3202, and the blocking walls 3202 may be provided in plural according to the need. The barrier walls 3202 in some implementations are disposed perpendicular or substantially perpendicular to the mesh face 3201.

As shown in fig. 5 and 6, the sound cavity structure 40, which is the sound cavity region where the mesh surface 3201 is located, is divided into a plurality of small sound cavities, and sound waves are propagated through the small-region mesh sound cavities, so that the sound is confined to a small space and oscillated, the wavelength of the sound is changed, and the frequency of standing waves is avoided, thereby preventing the occurrence of distortion. The air body from the dust screen 20 to the mesh of the mesh decoration 32 is divided into a plurality of small air bodies with small volume by a complete big air body, and the transmission form of sound in the original large air body is changed. This feature improves significantly for deeper vestibular spaces 40 (thicker air volume).

As shown in fig. 2, if the mesh surface 3201 is not isolated, there are many possible propagation modes due to the larger sound wavelength, or several propagation modes are combined together, which generate different coupling effects and generate noise.

According to the structural acoustic theory basis, the purpose of changing the front cavity vibration system of the loudspeaker is achieved by changing the acoustic impedance of the system, and the change of the vibration system directly changes the distortion of the system;

high frequency parts due to the linear elements are filtered out, thereby reducing high frequency distortion.

In some embodiments of the present invention, the existing assembling mode of the front cavity of the speaker is not changed, the front cavity of the speaker is divided into a plurality of (three) areas, that is, a partition is added appropriately at the sound cavity structure 40 part of the front cavity of the deep speaker, so as to divide the sound cavity structure 40 of the front cavity into a plurality of parts, and the present invention has the following beneficial effects:

by the design of the front cavity of the loudspeaker in the regions, the regular movement of air in the front cavity under high-frequency resonance is reduced, the generation of standing waves is reduced, and the distortion is reduced;

the vibration system composed of the loudspeaker and the front cavity is changed by changing the acoustic impedance, and the distortion of the system is directly changed;

the change in acoustic impedance, analyzed from the perspective of negative feedback, affects the vibration mode of the vibration system of the horn unit 10, reduces the distortion, and reduces the nonlinear distortion generated by the horn unit 10.

The structure of the sound cavity structure 40 in the utility model can be applied to a product with a similar front cavity structure without being limited to a loudspeaker, so that high-frequency distortion is optimized, and the tone quality and the comfort level of customer experience are improved.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the utility model as defined in the appended claims.

Claims (10)

1. A sound cavity structure, comprising a front cavity assembly (30); the front cavity assembly (30) comprises a bearing seat (31) and a mesh decorating part (32) matched on the bearing seat (31);

the mesh garnish (32) includes a mesh portion (320); the mesh part (320) includes a mesh face (3201) provided with a plurality of holes and at least one blocking wall (3202) provided on the mesh face (3201), the blocking wall (3202) dividing an area above the mesh face (3201) into a plurality of small areas.

2. The sound cavity structure according to claim 1, wherein the baffle wall (3202) is arranged transversely to the mesh surface (3201).

3. The sound cavity structure according to claim 2, wherein two of the blocking walls (3202) are spaced on the mesh surface (3201), and are a first blocking wall and a second blocking wall, respectively, and the first blocking wall and the second blocking wall divide the area above the mesh surface (3201) into three small areas.

4. The sound cavity structure according to claim 3, characterized in that it comprises a dust screen (20); the mesh decoration piece (32) also comprises a supporting wall (322) which is arranged outside the mesh part (320) in a protruding way; the dust screen (20) is covered on the supporting wall (322); the dust screen (20), the supporting wall (322) and the mesh part (320) jointly define a sound cavity structure (40), and the blocking wall (3202) divides the sound cavity structure (40) into a plurality of small-area sound cavities.

5. The sound chamber structure according to claim 4, wherein the mesh garnish (32) includes a transmission hole (323) opened in the support wall (322); the transmission hole (323) divides the supporting wall (322) into a first supporting wall (3220) and a second supporting wall (3221); gaps are formed in the side wall surfaces, opposite to the sound cavity structure (40), of the first blocking wall and the second blocking wall, gaps are formed in the positions, close to the transmission holes (323), of the first blocking wall, and gaps are formed in the positions, far away from the transmission holes (323), of the second blocking wall.

6. The sound cavity structure according to claim 5, wherein the first supporting wall (3220) and the second supporting wall (3221) are symmetrically arranged; the first supporting wall (3220) and the second supporting wall (3221) define the transmission hole (323) together with the dust screen (20).

7. The sound cavity structure according to claim 5, wherein said mesh decoration (32) further comprises an attaching portion (321) extending outwardly along said mesh portion (320) for mounting said mesh decoration (32) on said carrier seat (31); the support wall (322) separates the mesh portion (320) from the attachment portion (321) and is disposed around the mesh portion (320); the bearing seat (31) comprises a second mounting cavity (313) in which a common mesh decorating part (32) is arranged; the sticking part (321) is bonded on the bottom wall surface of the bearing seat (31) in a gum mode.

8. The sound cavity structure according to claim 5, wherein the mesh garnish (32) is integrally formed with the carrier seat (31).

9. The sound cavity structure according to claim 7, wherein said carrier (31) comprises a face plate (310), said second mounting cavity (313) being disposed through said face plate (310);

the shape and size of the second mounting cavity (313) are equivalent to the shape and size of the mesh part (320) of the mesh decoration piece (32).

10. A loudspeaker comprising a horn unit (10), characterized by a sound cavity structure according to any one of claims 1 to 9.

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