CN210327951U

CN210327951U - Inhale sound module and audio amplifier

Info

Publication number: CN210327951U
Application number: CN201921272592.7U
Authority: CN
Inventors: 龚程
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-04-14
Anticipated expiration: 2029-08-07

Abstract

The utility model discloses a sound absorption module and a sound box, wherein the sound absorption module comprises a bottom shell made of plastic materials, a sound cavity with an upper end opening is arranged inside the bottom shell, a nylon breathable net covers the top of the bottom shell, the outer edge of the nylon breathable net is bonded with the outer edge of the bottom shell, the bottom of one end of the bottom shell is provided with a sound adjusting hole, a nylon breathable net sheet is bonded at the bottom of the bottom shell at the position of the sound adjusting hole, and sound absorption micro-particles are filled in the sound cavity; the sound box comprises an upper shell, a lower shell, a loudspeaker and a sound absorption module, wherein the upper shell is fixed on the lower shell, the loudspeaker is fixed on the inner side of the upper shell, the sound absorption module is fixed in the lower shell, a sound outlet hole is formed in the position, where the sound adjusting hole is located, of the lower shell, and a cavity is formed in an area surrounded by the sound absorption module, the lower shell and the upper shell; the utility model discloses can improve the low frequency effect of audio amplifier and reduce the distortion.

Description

Inhale sound module and audio amplifier

Technical Field

The utility model relates to an audio amplifier technical field, concretely relates to inhale sound module and audio amplifier.

Background

The existing sound box gradually develops towards small and ultrathin sound box and structural abnormity, when the existing sound box is used, sound waves are refracted and distorted all around in a cavity inside the sound box, even if the best loudspeaker is used, an ideal low-frequency effect cannot be achieved, the reason is considered, because the space volume of the cavity in the existing sound box is insufficient, the low-frequency loss is extremely large, and the distortion degree is high due to the sound wave refraction and distortion at the back of the loudspeaker.

A sound box with ideal bass performance needs to have enough back cavity volume to form optimal matching with all parameters of a loudspeaker, so that a certain diving depth can be achieved, and a good low-frequency effect is achieved. However, in the development of new products, due to structural limitations in various aspects, companies often cannot make the conditions required by an ideal rear sound cavity, so that the rear sound wave of the loudspeaker is refracted, distorted and energy-cancelled in the small, ultrathin and structurally-irregular cavities, thereby causing the phenomena of large low-frequency loss and high distortion.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a inhale sound module and audio amplifier, it inhales the sound module through the installation in the audio amplifier, inhales the sound module and forms independent sound wave absorption and release cavity to can reduce the speaker rear portion sound wave and refract distortion and energy offset in these small-size, ultra-thin and structure dysmorphism cavities, and then can improve the low frequency effect of audio amplifier and reduce the distortion.

The utility model provides a inhale sound module, includes the drain pan of being made by plastic materials, and the drain pan is inside to be provided with upper end open-ended sound chamber, and the top of drain pan covers has the ventilative net of nylon, and the outward flange of the ventilative net of nylon bonds with the outward flange of drain pan, and the bottom of drain pan wherein one end is provided with the accent hole, and the bottom that is located the drain pan of accent hole position department bonds and has the ventilative net piece of nylon, and it has the sound microparticle of inhaling to fill in the sound.

The utility model provides a inhale sound module, wherein, the upper end of drain pan is provided with outside annular chimb, and the outward flange of the ventilative net of nylon bonds with the upper surface of annular chimb.

A sound-absorbing module, wherein the sound-absorbing micro-particles are in a disc-shaped or star-shaped structure.

The utility model provides a sound box, includes casing, lower casing and speaker, goes up the casing and fixes on the casing down, and the speaker is fixed at last casing inboard, and sound box still includes inhales the sound module, inhales the sound module and fixes in the casing down, and the lower casing is located the position department of adjusting sound hole and is provided with the sound hole, inhales the regional vacuole formation that sound module, lower casing and last casing enclose.

A sound box, wherein, the inner wall of the lower shell is provided with an annular step for supporting an annular convex edge at the upper end of the bottom shell, and the annular convex edge is fixed on the annular step.

The utility model discloses an installation is inhaled the sound module in the audio amplifier, inhales the sound module and forms independent sound wave absorption and release cavity to can reduce the speaker rear portion sound wave and refract distortion and energy offset in these small-size, ultra-thin and structure dysmorphism cavities, and then can improve the low frequency effect of audio amplifier and reduce the distortion.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic perspective view of a speaker;

FIG. 2 is a schematic view of a partially exploded structure of the speaker;

FIG. 3 is a schematic view of a partially exploded structure of the speaker;

FIG. 4 is a schematic cross-sectional view of the speaker;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

fig. 6 is a waveform diagram of audio frequencies at low frequencies of a sound box to which the sound absorbing module is applied and a sound box to which the sound absorbing module is not applied.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a inhale sound module, include the drain pan 1 of being made by plastic materials, the inside upper end open-ended sound chamber 11 that is provided with of drain pan 1, the top of drain pan 1 covers has ventilative net 2 of nylon, the outward flange of ventilative net 2 of nylon bonds with the outward flange of drain pan 1, the outward flange of ventilative net of nylon passes through the hot melt with the outward flange of drain pan and bonds, the bottom of drain pan 1 one end wherein is provided with accent sound hole 12, the bottom that is located drain pan 1 of accent sound hole 12 place department bonds and has ventilative net piece 3 of nylon, the ventilative net piece of nylon bonds together through the mode that the hot melt bonds with the drain pan, it has by inhaling sound microparticle 4 to. The sound-absorbing microparticles 4 are obtained by direct purchase in the market, and are zeolite microparticles or polysilicon microparticles.

The upper end of the bottom shell 1 is provided with an outward annular convex edge 13, and the outer edge of the nylon breathable net 2 is bonded with the upper surface of the annular convex edge 13; by adopting the structure, the nylon breathable net can be reliably bonded with the bottom shell.

The sound-absorbing microparticles 4 have a disk-like or star-like structure.

The utility model provides a sound box, includes casing 5, casing 6 and speaker 7 down, goes up casing 5 and fixes on casing 6 down, and speaker 7 is fixed at last casing 5 inboardly, and sound box is still including inhaling the sound module, inhales the sound module and fixes in casing 6 down, and casing 6 is located the 12 position departments in pitch hole down and is provided with out the sound hole 61, inhales the regional vacuole formation 8 that the sound module, casing 6 and last casing 5 enclose down.

An annular step 62 for supporting the annular flange 13 at the upper end of the bottom case 1 is arranged on the inner wall of the lower case 6, and the annular flange 13 is fixed on the annular step 62; the annular convex edge can be fixed on the annular step in a hot melt bonding or screw fixing mode.

After the sound absorption module is installed in the sound box, the refraction distortion and energy offset of sound waves at the rear part of the loudspeaker in a cavity formed by the upper shell and the lower shell can be reduced, so that the low-frequency effect of the sound box can be improved, and the distortion can be reduced.

As shown in fig. 6, the sound box with the sound absorption module improves the low frequency effect below 700HZ and the total harmonic distortion of 300-2000HZ compared to the sound box without the sound absorption module.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. Inhale the sound module, its characterized in that: including drain pan (1) made by plastic materials, drain pan (1) inside is provided with upper end open-ended sound chamber (11), the top of drain pan (1) covers has ventilative net of nylon (2), the outward flange of ventilative net of nylon (2) bonds with the outward flange of drain pan (1), the bottom of drain pan (1) one end wherein is provided with accent sound hole (12), and the bottom that is located drain pan (1) of accent sound hole (12) position department bonds and has ventilative net piece of nylon (3), it has by inhaling sound microparticle (4) to fill in sound chamber (11).

2. Sound-absorbing module according to claim 1, characterized in that the upper end of the bottom shell (1) is provided with an outward annular collar (13), the outer edge of the nylon air-permeable mesh (2) being glued to the upper surface of the annular collar (13).

3. Sound-absorbing module according to claim 1, characterized in that the sound-absorbing micro particles (4) are of disc-like or star-shaped configuration.

4. The audio amplifier, including last casing (5), casing (6) and speaker (7) down, go up casing (5) and fix on casing (6) down, speaker (7) are fixed at last casing (5) inboard, its characterized in that: the loudspeaker box further comprises a sound absorption module according to any one of claims 1 to 3, wherein the sound absorption module is fixed in the lower shell (6), a sound outlet (61) is arranged at the position of the sound adjusting hole (12) of the lower shell (6), and a cavity (8) is formed in the area enclosed by the sound absorption module, the lower shell (6) and the upper shell (5).

5. An acoustic enclosure as claimed in claim 4, characterized in that the inner wall of the lower casing (6) is provided with an annular step (62) for supporting an annular flange (13) at the upper end of the bottom shell (1), the annular flange (13) being fixed to the annular step (62).