CN219395037U - Can improve dustcoat of loudspeaker low frequency characteristic - Google Patents

Abstract

The utility model provides a housing capable of improving low-frequency characteristics of a loudspeaker, which comprises a housing, an acoustic wave guide cover and a loudspeaker monomer, wherein the acoustic wave guide cover is a sleeve with open upper and lower ends, and the loudspeaker monomer is arranged at the bottom of the acoustic wave guide cover; the top end of the vertical part of the sound wave guide cover is close to the top end of the inner wall of the shell, so that the sound can be transmitted and broadcast in a small space, the transmission path is at least twice the height of the shell, the volume is reduced by prolonging the transmission path, and the volume is smaller than that of the closed sound box, therefore, the requirement on the output power of the power amplifier is lower than that of the closed sound box.

Description

Can improve dustcoat of loudspeaker low frequency characteristic

Technical Field

The utility model relates to an outer cover capable of improving low-frequency characteristics of a loudspeaker, and belongs to the technical field of electroacoustic.

Background

The loudspeaker, wind instrument, the upper thin and the lower thick is a kind of conversion equipment that the electric energy changes into sound, when different electron energy passes to the coil, the coil produces an energy and the magnetic field interaction of magnet, and this interaction causes the paper tray vibration, because electron energy changes at any time, the coil of loudspeaker can move forward or backward, consequently the paper tray of loudspeaker will follow the motion, and this action makes the density degree of air produce the change and produce sound.

The existing phase-inversion sound box is derived on the basis of a loudspeaker, and is mainly a phase-inversion perforated box and a low-frequency radial sound box, and is a sound box with phase-inversion holes (grooves) formed in a sound box panel. Because of the holes, the sound in the box can radiate outside, and the box body is mainly used for eliminating the sound short circuit of the loudspeaker, inhibiting the sound resonance, widening the frequency response range and reducing the distortion.

The loudspeaker units all have a basic resonance point frequency, at which the output sound will be maximum and the distortion will be maximum, if not controlled, which tends to cause the low-frequency playback of the sound box to be more uneven, the balance to be worse, and the distortion to be increased dramatically. Therefore, it is necessary to develop a housing which is small and can develop and surpass the low frequency characteristics of the inverter speaker itself, and which is used for many devices which have a requirement for low frequency expansion and have a single device with insufficient effect.

Disclosure of Invention

The utility model provides a housing capable of improving the low-frequency characteristic of a loudspeaker, and the problems can be effectively solved.

The utility model is realized in the following way:

the outer cover capable of improving the low-frequency characteristic of the loudspeaker comprises a shell, an acoustic wave guide cover and a loudspeaker monomer, wherein the acoustic wave guide cover is a sleeve with open ends at the upper end and the lower end;

the sound wave guide cover is of a T-shaped structure with an inverted vertical section and is mechanically connected with the bottom end inside the shell through a connecting structure, and the top end of the vertical part of the sound wave guide cover is close to the top end of the inner wall of the shell.

As a further improvement, a plurality of sound outlet holes are formed in the bottom end surface of the sound wave guide cover, close to the loudspeaker single body.

As a further improvement, the number of the sound outlets is 4-6, and the sound outlets are distributed equidistantly on concentric circles where the centers of the sound outlets and the loudspeaker monomers are located.

As a further improvement, the sound outlet is an arc annular slot.

As a further improvement, the bottom of the shell is provided with a fixing ring, and the fixing ring is fixed outside the whole machine through a fixing structure.

As a further improvement, a fixing ring is arranged at the top of the shell, and the fixing ring is fixed inside the whole machine through a fixing structure.

The beneficial effects of the utility model are as follows: when the loudspeaker unit works, sound waves radiated from the back of the loudspeaker unit pass through the sound wave guide cover, are reflected and refracted by the shell and radiated to the front, are overlapped with sound waves in front of the loudspeaker unit, and are radiated forwards together, so that the low-frequency effect is enhanced, and the sound is not distorted.

The top end of the vertical part of the sound wave guide cover is close to the top end of the inner wall of the shell, so that the sound can be transmitted and broadcast in a small space, the transmission path is at least twice the height of the shell, the volume is reduced by prolonging the transmission path, and the volume is smaller than that of the closed sound box, therefore, the requirement on the output power of the power amplifier is lower than that of the closed sound box.

The bottom of the shell is provided with the fixing ring, the fixing ring is fixed outside the whole machine through the fixing structure, the whole machine comprises any equipment using a loudspeaker, and the following is not repeated; the shell that the bottom set up solid fixed ring is more suitable for installing in the inside of complete machine, and it is inside to embed in the complete machine, does not influence the aesthetic property of equipment, the shell top is provided with solid fixed ring, gu fixed ring passes through fixed knot constructs to be fixed in the complete machine inside, more does benefit to the inside at the shell of small volume of installing, and practicality is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a housing for improving low frequency characteristics of a loudspeaker according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of a housing for improving low frequency characteristics of a loudspeaker according to an embodiment of the utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

In the description of the present utility model, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 and 2, the present utility model provides a housing for improving low frequency characteristics of a loudspeaker, which includes a housing 10, a sound wave guiding cover 20, and a loudspeaker unit 30, wherein the sound wave guiding cover 20 is a sleeve with open upper and lower ends, the loudspeaker unit 30 is mounted at the bottom of the sound wave guiding cover 20, and the outer wall of the bottom of the sound wave guiding cover 20 is mechanically connected with the sound wave guiding cover 20.

The speaker unit 30 has a conversion device for converting electric energy into sound, that is, when different electric energy is transferred to the coil, the coil generates an energy to interact with the magnetic field of the magnet, and the interaction causes the vibration of the paper disc.

The structure of the horn unit 30 is not limited at all, as long as it has a function of converting electric energy into sound.

The basic principle of the utility model is that when the loudspeaker unit 30 works, sound waves radiated from the back of the loudspeaker unit 30 pass through the sound wave guide cover 20, are radiated to the front after being reflected and refracted by the shell 10, are overlapped with sound waves in front of the loudspeaker unit 30, and are radiated forwards together, so that the low-frequency effect is enhanced, and the sound is not distorted.

Further, the sound wave guiding cover 20 has an inverted T-shaped structure with a vertical section, and is mechanically connected with the bottom end inside the housing 10 through the connection structure 40, and the top end of the vertical portion of the sound wave guiding cover 20 is close to the top end of the inner wall of the housing 10, so that a propagation path of sound is extended in a small space, the propagation path is at least 1.5 times of the height of the housing 10, and the volume is reduced by extending the propagation path, so that the volume is 70% smaller than that of the closed sound box, and therefore, the requirement on the output power of the power amplifier is lower than that of the closed sound box.

In one embodiment, the horizontal portion of the sound wave guiding cover 20 is L-shaped, and the bottom end inside the housing 10 is also provided with an inverted L-shaped member adapted to the horizontal portion, and the two members are overlapped and then are penetrated and fixed by bolts or screws.

Further, a plurality of fixing holes are formed at the overlapping position of the horizontal part of the sound wave guiding cover 20 and the bottom end inside the casing 10, and the corresponding casing 10 is also provided with a plurality of fixing holes, so that the two fixing holes can be inserted and fixed in the fixing holes for adjusting the internal volume of the casing 10 and the area of the sound outlet. And is more beneficial to reducing the low-frequency effect.

In one embodiment, the connection structure 40 is formed by connecting a slot and a protrusion, and the protrusion is disposed on the horizontal portion of the sound wave guiding cover 20 and engaged with the slot on the inner wall of the housing 10, so as to implement the locking seal.

As a further improvement, the bottom end surface of the sound wave guiding cover 20 is provided with a plurality of sound outlets 50 near the speaker unit 30, the number of the sound outlets 50 is 4-6, the sound outlets 50 are distributed at equal intervals with respect to a concentric circle where the center of the speaker unit 30 is located, the area of the sound outlets 50 is widened in a small volume range, the sound outlet area is ensured to be larger than or equal to that of a common phase inversion sound box, and if the area is too small, the reflected or diffracted sound is very sharp, which is equivalent to the original purpose of reducing the sound frequency of the utility model.

Furthermore, the sound outlet 50 is an arc annular slot, if it is directly installed outside the whole machine, the surface is smooth and smooth, the appearance is beautiful, and the sound outlet function is not affected.

As a further improvement, as shown in fig. 1, a fixing ring 101 is disposed at the bottom of the housing 10, and the fixing ring 101 is fixed outside the whole machine by a fixing structure 102, where the whole machine includes any equipment using a speaker, and the following is omitted. The shell 10 with the bottom provided with the fixing ring 101 is more suitable for being arranged in the whole machine, is arranged in the whole machine, does not influence the attractive performance of the equipment, and has strong practicality.

As a further improvement, as shown in fig. 2, a fixing ring 101 is disposed at the top of the housing 10, and the fixing ring 101 is fixed inside the whole machine by a fixing structure 102, so that the fixing ring is more beneficial to being installed inside the housing 10 with a small volume, and has strong practicality.

In one embodiment, the fixing structure 102 is a screw, and may be rotatably fixed on the whole machine housing.

In one embodiment, the fixing structure 102 is a bolt and hexagonal nut fit, and can be rotationally fixed through the integral housing and locked by a nut.

In summary, the principle of the utility model is as follows: when the speaker unit 30 works, sound waves radiated from the back of the speaker unit 30 pass through the sound wave guide cover 20, are reflected and refracted by the shell 10, are radiated to the front through the sound outlet 50, are overlapped with sound waves in front of the speaker unit 30, and are radiated forwards together, so that the low-frequency effect is enhanced, the sound is not distorted, and the volume is reduced.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (6)

1. The outer cover capable of improving the low-frequency characteristic of the loudspeaker is characterized by comprising a shell (10), an acoustic wave guide cover (20) and a loudspeaker monomer (30), wherein the acoustic wave guide cover (20) is a sleeve with open upper and lower ends, the loudspeaker monomer (30) is arranged at the bottom of the acoustic wave guide cover (20), and the outer wall of the bottom of the acoustic wave guide cover (20) is mechanically connected with the acoustic wave guide cover (20);

the sound wave guide cover (20) is of a T-shaped structure with an inverted vertical section, and is mechanically connected with the bottom end inside the shell (10) through a connecting structure (40), and the top end of the vertical part of the sound wave guide cover (20) is close to the top end of the inner wall of the shell (10).

2. The housing for improving the low-frequency characteristic of a loudspeaker according to claim 1, wherein a plurality of sound outlets (50) are arranged at the bottom end surface of the sound wave guiding housing (20) near the loudspeaker unit (30).

3. A cover for improving the low frequency characteristics of a loudspeaker according to claim 2, wherein the number of sound outlets (50) is 4-6, and the sound outlets (50) are equidistantly distributed about a concentric circle where the center of the loudspeaker unit (30) is located.

4. A cover for improving the low frequency characteristics of a loudspeaker according to claim 2 or 3, wherein the sound outlet (50) is an arcuate annular slot.

5. The outer cover capable of improving low-frequency characteristics of a loudspeaker according to claim 1, wherein a fixing ring (101) is arranged at the bottom of the outer cover (10), and the fixing ring (101) is fixed outside the whole machine through a fixing structure (102).

6. The outer cover capable of improving low-frequency characteristics of a loudspeaker according to claim 1, wherein a fixing ring (101) is arranged at the top of the outer cover (10), and the fixing ring (101) is fixed in the whole machine through a fixing structure (102).