A speaker enclosure

Abstract

This utility model relates to a speaker enclosure, which has multiple first sound outlets and multiple second sound outlets, with the diameter of the first sound outlets being larger than the diameter of the second sound outlets. When the speaker unit, a component of the speaker enclosure, emits sound, the sound waves pass through the larger first sound outlet, causing the resonant frequency to decrease, thereby enhancing the output of low-frequency sound waves. When the sound waves pass through the smaller second sound outlets, the resonant frequency increases, which can divert the sound energy accumulation in a specific frequency band of the first sound outlet, ensuring balanced sound output across the entire frequency range. Furthermore, since the diameter of the first sound outlet is 1.2-1.5 times that of the second sound outlet, the larger diameter first sound outlet improves the output efficiency of ultra-low frequencies, while the smaller diameter second sound outlet improves the output efficiency of mid-to-low frequencies. The two work together to achieve efficient complementarity between different frequency bands, thereby enhancing low-frequency performance and achieving optimal sound output.

Description

Technical Field

[0001] This utility model relates to the field of speaker technology, and in particular to a speaker shell. Background Technology

[0002] The speaker enclosure is the core structural component of a speaker, primarily serving two functions: firstly, to secure the internal speaker units and other components; and secondly, to conduct sound through the sound outlets on the enclosure. However, most speaker enclosures on the market today suffer from a significant flaw: their sound outlets are designed with a uniform size. This homogenized opening limits the acoustic performance of the speaker unit modules, particularly hindering the effective enhancement of low-frequency sound wave output.

[0003] This design flaw directly impacts the user experience. For example, when playing movie or game sound effects, sounds that rely on low frequencies, such as explosions and impacts, cannot be adequately amplified, resulting in insufficient sound layering and limited dynamic range. As a result, users struggle to achieve an immersive auditory experience, diminishing the sense of presence in movies and music. Utility Model Content

[0004] Therefore, it is necessary to provide a speaker enclosure to solve the technical problem that the uniform size of the sound outlet holes in the speaker enclosure makes it impossible to effectively enhance the output of low-frequency sound waves.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] A speaker enclosure includes: a housing, wherein the housing has a plurality of first sound outlet holes and a plurality of second sound outlet holes, wherein the diameter of the first sound outlet hole is larger than the diameter of the second sound outlet hole, and the diameter of the first sound outlet hole is 1.2-1.5 times the diameter of the second sound outlet hole.

[0007] In one embodiment, the distance between the centers of adjacent first and second sound holes along the horizontal direction of the housing is 2.9 mm to 3.2 mm.

[0008] In one embodiment, in the axial direction of the housing, the distance between the centers of adjacent first and second sound outlet holes is 1.4mm-1.6mm.

[0009] In one embodiment, the housing has an installation cavity, and the first sound outlet and the second sound outlet communicate with the installation cavity.

[0010] In one embodiment, the housing is provided with a positioning hole, which is spaced apart from the first sound outlet and the second sound outlet, and the positioning hole is used to provide installation positioning for other components of the speaker.

[0011] In one embodiment, a tuning layer is provided on the side wall of the mounting cavity, the tuning layer being used to improve the sound purity of the first sound outlet and the second sound outlet.

[0012] In one embodiment, a mounting groove is provided at the bottom end of the housing, the mounting groove is spaced apart from the first sound outlet and the second sound outlet, and the mounting groove communicates with the mounting cavity.

[0013] In one embodiment, the first sound holes and the second sound holes are arranged alternately on the housing.

[0014] In one embodiment, the first sound holes are spaced at equal intervals, and the second sound holes are spaced at equal intervals.

[0015] In one embodiment, the ratio of the diameter to the depth of the first sound hole and the second sound hole is 1.2 to 1.5.

[0016] The beneficial effects of this utility model are as follows: By providing a speaker shell with multiple first sound outlets and multiple second sound outlets, the diameter of the first sound outlet is larger than the diameter of the second sound outlet. When the speaker unit, a component of the speaker, emits sound, the sound wave passes through the larger first sound outlet, causing the resonant frequency to decrease, thereby enhancing the output of low-frequency sound waves. When the sound wave passes through the smaller second sound outlet, the resonant frequency increases, which can divert the sound energy accumulation in a specific frequency band of the first sound outlet, ensuring balanced sound output across the entire frequency range. Furthermore, since the diameter of the first sound outlet is 1.2-1.5 times that of the second sound outlet, the frequency difference between the two is within 20Hz-50Hz. Thus, the larger diameter first sound outlet improves the output efficiency of ultra-low frequencies, while the smaller diameter second sound outlet improves the output efficiency of mid-low frequencies. The two work together to avoid sound interference caused by frequency band overlap and achieve efficient complementarity between different frequency bands, thereby enhancing low-frequency performance and achieving optimal sound output, thus improving the user's actual experience. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the speaker enclosure in Example 1;

[0019] Figure 2 This is a front view structural diagram of the speaker housing in Example 1;

[0020] Figure 3 This is a bottom view structural diagram of the speaker housing in Example 1;

[0021] Figure 4 This is a bottom view of the speaker housing structure of Example 1.

[0022] In the attached diagram, 10 is the housing; 11 is the first sound outlet; 12 is the second sound outlet; 13 is the mounting groove; 14 is the mounting cavity; 15 is the positioning hole; C is a set of first sound outlets; D is a row of first sound outlets; E is a set of second sound outlets; F is a row of second sound outlets; G is the top surface; and H is the annular surface. Detailed Implementation

[0023] Example 1

[0024] A speaker enclosure, such as Figures 1 to 3 As shown, the device includes a housing 10, on which multiple first sound outlet holes 11 and multiple second sound outlet holes 12 are formed. The housing 10 has a top surface G and an annular surface H perpendicular to the top surface G. The multiple first sound outlet holes 11 and multiple second sound outlet holes 12 are all formed on the annular surface H. The multiple second sound outlet holes 12 and multiple first sound outlet holes 11 are arranged vertically around the outer surface of the annular surface H, forming multiple rows and columns of second sound outlet holes 12 and first sound outlet holes 11. Each row of second sound outlet holes F is divided into two groups, with two groups of second sound outlet holes E spaced apart to form two independent sound emission areas. Each row of first sound outlet holes D forms a group of first sound outlet holes C, forming an independent sound emission area. The group of first sound outlet holes C is located between the two groups of second sound outlet holes 12. This ensures that the sound emission areas of the two groups of first sound outlet holes 11 and the group of first sound outlet holes C are independent and do not interfere with each other. The diameter of the first sound hole 11 is larger than the diameter of the second sound hole 12, and the diameter of the first sound hole 11 is 1.2-1.5 times the diameter of the second sound hole 12.

[0025] In use, after the housing 10 is assembled with the other components of the speaker enclosure, when the sound waves emitted by the speaker unit propagate to the first sound outlet 11, according to the Helmholtz resonant frequency calculation formula: Where f is the resonant frequency, c is the velocity of sound, A is the area of ​​the sound outlet, V is the volume of the enclosure, and L is the effective thickness of the sound outlet. c, V, and L are all constants. Therefore, the sound emitted from the larger first sound outlet 11 has a lower resonant frequency f, thus enhancing the output effect of low-frequency sound waves. The airflow velocity v = (q / A), where q is the volumetric flow rate and is constant. Because the area of ​​the first sound outlet 11 is larger, the airflow velocity v will be smaller, easily causing airflow accumulation. Therefore, a second sound outlet 12 with a smaller diameter than the first sound outlet 11 is provided. According to the above calculation formula, the gas velocity v is larger, effectively improving airflow and eliminating airflow accumulation near the first sound outlet 11. Simultaneously, the resonant frequency f is also larger. The higher resonant frequency of the second sound outlet 12 helps optimize the acoustic performance in the mid-to-low frequency range. The diameter of the first sound outlet 11 is 1.2-1.5 times the diameter of the second sound outlet 12. According to the Helmholtz resonant frequency calculation formula mentioned above, when the diameter of the first sound outlet 11 is 1.2-1.5 times the diameter of the second sound outlet 12, the frequency difference Δf between the two is within 20-50Hz. Thus, the larger diameter of the first sound outlet 11 improves the output efficiency of ultra-low frequencies, while the smaller diameter of the second sound outlet 12 improves the output efficiency of mid-low frequencies. Their synergistic operation avoids acoustic interference caused by frequency band overlap and achieves efficient complementarity between different frequency bands, thereby achieving optimal sound production. By cooperating with the first and second sound outlets 12 of different diameters, the low-frequency response of the speaker is improved, and the overall stability of the system is ensured through airflow dynamics optimization, achieving a balance between acoustic performance and structural reliability.

[0026] Preferably, along the axial direction of the housing 10, each of the first sound outlet holes 11 and each of the second sound outlet holes 12 are arranged alternately on the housing 10, that is, the first sound outlet holes 11 in adjacent rows are staggered, and the second sound outlet holes 12 in adjacent rows are staggered. Specifically, each first sound outlet hole 11 and each second sound outlet hole 12 in adjacent rows are staggered, that is, the first sound outlet holes 11 and second sound outlet holes 12 in each row are arranged obliquely from top to bottom on the housing 10. Through the above arrangement, the airflow path inside the speaker housing can be dispersed, avoiding regular sound wave reflection, reducing wind noise, thereby optimizing the acoustic performance in the mid-low frequency range.

[0027] Preferred, such as Figure 3As shown, along the horizontal direction of the housing 10, the distance between the centers of each adjacent first sound outlet 11 and second sound outlet 12 is 2.9mm-3.2mm. According to d = λ / 2 and λ = v / f, where λ is the wavelength, v is the speed of sound (340 m / s), and f is the frequency of the sound wave, the frequency of low-frequency sound waves is 20 Hz-250 Hz, and the frequency of high-frequency sound waves is 2 kHz-20 kHz. When d = λ / 2, sound wave interference will occur. Taking the maximum value of low-frequency sound wave (250 Hz) and high-frequency sound wave (20 kHz) as examples, and substituting them into d = λ / 2 and λ = v / f respectively, the value of d for low-frequency sound waves is calculated to be 0.68 m, and the value of d for high-frequency sound waves is calculated to be 8.5 mm. These two values ​​are much larger than the distance between the centers of the first sound hole 11 and the second sound hole 12 (2.9 mm-3.2 mm). Therefore, it is possible to avoid destructive interference in the horizontal direction between the sound waves of adjacent first sound holes 11 and adjacent second sound holes 12, ensuring the clarity of low-frequency sound waves.

[0028] Preferably, along the axial direction of the housing 10, the distance between the centers of adjacent first sound outlet holes 11 and second sound outlet holes 12 is 1.4mm-1.6mm. According to the above formula, d=λ / 2, λ=v / f, 1.4mm-1.6mm is much smaller than the above-mentioned 0.68m and 8.5mm, therefore, the sound waves will not interfere with each other in the axial direction.

[0029] Preferred, such as Figure 3 As shown, a mounting cavity 14 is provided inside the housing 10, and the first sound outlet 11 and the second sound outlet 12 are connected to the mounting cavity 14. The mounting cavity 14 provides mounting space for the core components of the speaker cabinet, such as the speaker unit, while the housing 10 effectively protects the internal components. When the speaker unit in the mounting cavity 14 is working, the sound waves it generates are radiated outward through the first sound outlet 11 and the second sound outlet 12, achieving effective sound output. This structural design ensures both the rational layout of the components and the smooth propagation of sound.

[0030] Preferred, such as Figure 3 As shown, the outer casing has a positioning hole 15, which is spaced apart from the first sound outlet 11 and the second sound outlet 12, and communicates with the mounting cavity 14. The positioning hole 15 provides mounting positioning for other components of the speaker, thereby enabling rapid assembly between the casing 10 and other components of the speaker.

[0031] Preferred, such as Figure 1 and Figure 2As shown, a mounting groove 13 is provided at the bottom of the housing 10. Specifically, the speaker includes a mounting base on which core components such as the speaker unit are integrated, and a locking block is provided on the edge. During installation, the housing 10 is aligned and fastened to the mounting base, so that the locking block on the base is precisely inserted into the mounting groove 13 of the housing 10, forming a stable snap-fit ​​connection. This structural design ensures both ease of assembly and mechanical stability between the housing 10 and the base, while also providing effective protection for the internal components of the speaker.

[0032] Preferably, the first sound outlet holes 11 are spaced at equal intervals, and the second sound outlet holes 12 are spaced at equal intervals. This arrangement improves the uniformity of sound output from the first sound outlet holes 11 and the second sound outlet holes 12.

[0033] Preferably, the diameter-to-depth ratio of the first sound outlet 11 and the second sound outlet 12 is 1.2 to 1.5. This ratio ensures a smooth impedance transition of sound waves from the housing 10 to the air, reducing reflection loss and optimizing output performance in specific frequency bands.

[0034] Example 2

[0035] Unlike Embodiment 1, a tuning layer is provided on the side wall of the mounting cavity 14. Specifically, the tuning layer is made of glass wool, and it has clearance holes corresponding to the positions of each first sound outlet 11 and each second sound outlet 12. The tuning layer is adhered to the side wall of the mounting cavity 14. The tuning layer made of glass wool can absorb the reflected sound waves emitted by the speaker unit inside the mounting cavity 14, reducing sound coloration and vibration of the housing 10, thereby improving sound purity. Furthermore, the sound waves emitted by the speaker unit can still radiate normally outward from the first sound outlet 11 and the second sound outlet 12 after passing through the clearance holes, without interfering with the normal sound output.

[0036] The other structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.

Claims

1. A speaker housing, characterized in that, include: The housing (10) has a plurality of first sound holes (11) and a plurality of second sound holes (12). The diameter of the first sound hole (11) is larger than the diameter of the second sound hole (12). The diameter of the first sound hole (11) is 1.2-1.5 times the diameter of the second sound hole (12).

2. The speaker housing according to claim 1, characterized in that, Along the horizontal direction of the housing (10), the distance between the centers of each adjacent first sound hole (11) and second sound hole (12) is 2.9mm-3.2mm.

3. The speaker housing according to claim 1, characterized in that, Along the axial direction of the housing (10), the distance between the centers of each adjacent first sound hole (11) and second sound hole (12) is 1.4mm-1.6mm.

4. The speaker housing according to claim 1, characterized in that, The housing (10) has an installation cavity (14) inside, and the first sound outlet (11) and the second sound outlet (12) are connected to the installation cavity (14).

5. The speaker housing according to claim 4, characterized in that, The outer casing is provided with a positioning hole (15), which is spaced apart from the first sound outlet (11) and the second sound outlet (12). The positioning hole (15) is used to provide installation positioning for other components of the speaker.

6. The speaker housing according to claim 4, characterized in that, A tuning layer is provided on the side wall of the mounting cavity (14), which is used to improve the sound purity of the first sound outlet (11) and the second sound outlet (12).

7. The speaker housing according to claim 4, characterized in that, The bottom end of the housing (10) is provided with a mounting groove (13), which is spaced apart from the first sound outlet (11) and the second sound outlet (12), and the mounting groove (13) is connected to the mounting cavity (14).

8. The speaker housing according to claim 1, characterized in that, Each of the first sound outlet holes (11) and each of the second sound outlet holes (12) are arranged alternately on the housing (10).

9. The speaker housing according to claim 1, characterized in that, The first sound holes (11) are spaced at equal intervals, and the second sound holes (12) are spaced at equal intervals.

10. The speaker housing according to claim 1, characterized in that, The ratio of the diameter to the depth of the first sound hole (11) and the second sound hole (12) is 1.2 to 1.5.

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