Band-pass type bass loudspeaker

Abstract

The utility model discloses a band-pass type woofer, which comprises a box body shell I which is a U-shaped plate body structure outside a box body formed by vertically bonding plate bodies, a box body shell II is arranged on one side of an opening of the box body shell I, and the box body shell II and the box body shell I form a rectangular wall body structure; and a main shell structure of the box body of the woofer is formed. When the band-pass type bass loudspeaker is used, the inner cavity partition plate I, the inner cavity partition plate II and the inner cavity partition plate III are spliced to form an n-shaped frame body structure to separate an inner cavity structure of the loudspeaker, so that the environment of the inner cavity of the box body is increased, and along with the arrangement of the two cavities, a pipeline of a rear cavity of a loudspeaker driver of the loudspeaker is effectively used; air resonance in a pipeline is utilized to tune and control displacement of a driver, higher efficiency is achieved, the first conduit and the second conduit are matched to form a band-pass type bass loudspeaker structure, a low-frequency part can be accurately processed, and the burden of other loudspeakers in a low-frequency range is relieved during combined use.

Description

TECHNICAL FIELD

[0001] The utility model relates to acoustics technical field, concretely is a kind of band-pass low-frequency loudspeaker. BACKGROUND

[0002] In the field of audio equipment, low-frequency loudspeaker is the key component of sound system, and the traditional low-frequency loudspeaker has certain limitations in low-frequency response and efficiency, etc., with the continuous improvement of people's requirements for sound quality, especially the pursuit of deep and powerful bass effect, which promotes the continuous improvement of loudspeaker technology, in order to improve the low-frequency performance, acoustical engineers begin to explore different box structures, by reasonably designing the separation structure and pipe length of the box interior and other parameters, the low-frequency sound can be enhanced and adjusted, so that the loudspeaker can also produce higher sound pressure level at lower frequency, and unnecessary frequency response peaks can be reduced, thereby providing smoother low-frequency response.

[0003] Early low-frequency loudspeakers simply rely on diaphragm to directly radiate sound, but in low-frequency band, sound attenuation is fast, sound pressure is insufficient, etc., and common band-pass box has low direct current displacement of driver due to the effect of rear cavity air spring, but a displacement peak appears in super-low frequency band. SUMMARY

[0004] The utility model discloses a kind of band-pass low-frequency loudspeakers, to solve the problem that existing low-frequency loudspeaker simply relies on diaphragm to directly radiate sound in the above background technology, but in low-frequency band, sound attenuation is fast, sound pressure is insufficient, etc., and common band-pass box has low direct current displacement of driver due to the effect of rear cavity air spring, but a displacement peak appears in super-low frequency band.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of band-pass low-frequency loudspeaker, including box shell one, it is the U-shaped plate body structure that plate body vertical adhesion constitutes box exterior, box shell one opening side is provided with box shell two, and box shell two and box shell one constitute rectangular wall structure, and constitute the main housing structure of the box of low-frequency loudspeaker;

[0006] The box shell one and box shell two constitute rectangular box structure, and box shell one and box shell two two ends are respectively equipped with positioning side plate one and positioning side plate two, the positioning side plate two is symmetrically arranged with box shell two, and box shell two and box shell one inner layer are provided with sealing plate, and box shell two side is provided with mounting hole;

[0007] The bottom of the inner wall of the outer shell of the enclosure is provided with an inner cavity partition 1 and an inner cavity partition 3, which are installed symmetrically and vertically. An inner cavity partition 2 is installed at the top of the inner cavity partition 1 and the inner cavity partition 3. The inner cavity partition 1, the inner cavity partition 2 and the inner cavity partition 3 form a geometric inner cavity. The inner cavity partition 1 has a circular opening inside, and a speaker driver is installed in the circular opening of the inner cavity partition 1.

[0008] The above technical solution facilitates the division of the internal structure of the speaker cavity into two chambers, which is conducive to acoustic filtering and energy concentration.

[0009] Preferably, the outer shell, the first positioning side plate, the second positioning side plate, and the second outer shell constitute a rectangular box structure, and the inner layers of the second positioning side plate and the first positioning side plate are provided with sealing elements.

[0010] Using the above technical solution, the enclosure shell 1, positioning side plate 1, positioning side plate 2 and enclosure shell 2 are spliced ​​together and positioned for installation.

[0011] Preferably, the second positioning side plate has equidistant openings inside, and the second positioning side plate and the first positioning side plate are symmetrically arranged on both sides of the outer shell of the housing.

[0012] Using the above technical solution, the two ends of the box are limited and installed by positioning side plate one and positioning side plate two.

[0013] Preferably, a support frame is vertically installed at the top end of the inner cavity partition, and a U-shaped opening is provided at the top end of the support frame, and the support frame is engaged with the surface of the conduit.

[0014] By adopting the above technical solution, the support frame is set up so that it works in conjunction with the conduit to provide support.

[0015] Preferably, the inner cavity partition three has a circular hole structure inside, and the circular hole of the inner cavity partition three is installed through one end of the conduit two, and the other end of the conduit two is installed through the positioning side plate two.

[0016] By adopting the above technical solution, the circular hole structure of the inner cavity partition three facilitates the installation and positioning of the second catheter.

[0017] Preferably, the second catheter is arranged parallel to the first catheter in a perpendicular direction, and the diameter of the first catheter is larger than the diameter of the second catheter.

[0018] By adopting the above technical solution, the second catheter is set parallel to the first catheter, which facilitates the connection of the two chamber sections.

[0019] Preferably, one end of the second catheter is connected to a geometrical internal cavity structure formed by the first internal cavity septum, the second internal cavity septum, and the third internal cavity septum.

[0020] Using the above technical solution, the internal chambers of the box are separated by a panel structure formed by splicing together inner cavity partition 1, inner cavity partition 2 and inner cavity partition 3.

[0021] Compared with the prior art, the beneficial effects of this utility model are: This bandpass subwoofer:

[0022] 1. During use, the internal cavity structure of the speaker is divided by the splicing of inner cavity partition 1, inner cavity partition 2 and inner cavity partition 3. This facilitates the control of the internal cavity environment. With the setting of the two cavities, the pipes of the rear cavity of the speaker driver are effectively utilized. The air resonance tuning in the pipes controls the driver displacement and achieves higher efficiency. The bandpass subwoofer structure formed by the cooperation of duct 1 and duct 2 can accurately handle the low frequency part. When used in conjunction with other speakers, it reduces the burden on other speakers in the low frequency range, thereby making the frequency response of the entire audio system more balanced and improving the overall sound quality.

[0023] 2. The internal cavity is divided using three internal partitions, and the two-shell structure ensures simple and stable installation. A support frame provides support for the duct, reducing the probability of rattling noises and minimizing low-frequency response peaks and troughs, resulting in a smoother low-frequency response curve. This means reduced sound distortion, making the bass sound more natural and pure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the overall internal three-dimensional structure of this utility model;

[0026] Figure 3 This is a schematic diagram of the overall internal side section of the present invention.

[0027] Figure 4 This is a schematic diagram of the overall internal three-dimensional structure of this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the installation of catheter one and catheter two of this utility model;

[0029] Figure 6 This is a three-dimensional structural diagram of the installation of inner cavity partition 1 and inner cavity partition 3 of this utility model.

[0030] In the diagram: 1. Enclosure shell 1; 2. Positioning side plate 1; 3. Positioning side plate 2; 4. Enclosure shell 2; 5. Mounting hole; 6. Inner cavity partition 1; 7. Inner cavity partition 2; 8. Inner cavity partition 3; 9. Support frame; 10. Conduit 1; 11. Conduit 2; 12. Speaker driver. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-6 This utility model provides a technical solution: a bandpass subwoofer, including a cabinet shell 1, a positioning side plate 2, a positioning side plate 3, a cabinet shell 4, a mounting hole 5, an inner cavity partition 6, an inner cavity partition 7, an inner cavity partition 3, a support frame 9, a conduit 10, a conduit 2 11, and a speaker driver 12.

[0033] Among them, the outer shell 1 is a U-shaped plate structure formed by vertically bonding the plates to form the exterior of the enclosure. The outer shell 4 is provided on the opening side of the outer shell 1, and the outer shell 4 and the outer shell 1 together form a rectangular wall structure, which constitutes the main outer shell structure of the subwoofer enclosure.

[0034] The outer shell 1 and the outer shell 4 form a rectangular box structure. Positioning side plate 1 2 and positioning side plate 2 3 are respectively installed at both ends of the outer shell 1 and the outer shell 2 4. Positioning side plate 2 3 and the outer shell 2 4 are symmetrically arranged. Sealing plates are provided inside the outer shell 2 4 and the outer shell 1. A mounting hole 5 is provided on one side of the outer shell 2 4. The outer shell 1, positioning side plate 1 2, positioning side plate 2 3 and the outer shell 2 4 form a rectangular box structure. Sealing elements are provided inside the positioning side plate 2 3 and the positioning side plate 1 2. The positioning side plate 2 3 has an equidistant opening structure inside. The positioning side plate 2 3 and the positioning side plate 1 2 are symmetrically arranged on both sides of the outer shell 1.

[0035] Referring to the attached diagrams in the instruction manual Figures 1-6 As shown, the enclosure shell 1, positioning side plate 2, positioning side plate 3, and enclosure shell 4 are assembled using bolts or adhesive. Sealing elements are installed at the joints of the enclosure shell 1, positioning side plate 2, positioning side plate 3, and enclosure shell 4 to improve the audio transmission effect within the enclosure. Mounting holes 5 on the surface of enclosure shell 4 provide mounting options for the cables connected to the speaker driver 12. Figure 1 As shown, compared to traditional speakers, it can reproduce bass frequencies of 20-200Hz more effectively, allowing users to more clearly feel the deep roar of drumbeats and the stunning bass effects in movies.

[0036] The bottom of the inner wall of the outer casing 1 is provided with an inner cavity partition 6 and an inner cavity partition 8, which are symmetrically and vertically installed. An inner cavity partition 7 is installed at the top of the inner cavity partitions 6 and 8. The inner cavity partitions 6, 7, and 8 form a geometric inner cavity. The inner cavity partition 6 has a circular opening, and a speaker driver 12 is installed in the circular opening. A support frame 9 is vertically installed at the top of the inner cavity partition 7. Furthermore, the top of the support frame 9 is provided with a U-shaped opening, and the support frame 9 is engaged with the surface of the first conduit 10. The inner cavity partition 3 8 is provided with a round hole structure, and the round hole of the inner cavity partition 3 8 is installed through one end of the second conduit 11. The other end of the second conduit 11 is installed through the positioning side plate 2 3. The second conduit 11 is arranged parallel to the first conduit 10 in a vertical direction, and the diameter of the first conduit 10 is larger than the diameter of the second conduit 11. One end of the second conduit 11 is connected to the zig-shaped inner cavity structure formed by the inner cavity partition 1 6, the inner cavity partition 2 7, and the inner cavity partition 3 8.

[0037] Referring to the attached diagrams in the instruction manual Figures 1-6 As shown, inner cavity partition 6, inner cavity partition 7, and inner cavity partition 8 are installed inside the box in a geometric structure, such as... Figure 2 and Figures 5-6 As shown, the holes in the inner cavity partition 6 provide installation for the speaker driver 12. At this time, the rear cavity of the speaker driver 12 faces the conduit 11. The support frame 9 located above the inner cavity partition 7 provides installation for the conduit 10. The rear cavity space of the speaker driver 12 is effectively utilized. By using the air resonance tuning in the conduit, the driver displacement is controlled to achieve higher efficiency. The conduit 11 connects to the inner cavity space, which facilitates the transmission of sound waves to the outside and effectively enhances low-frequency sound. Through the double-layer cabinet structure design, acoustic filtering is formed, which allows the speaker to concentrate energy in the low-frequency range, reduces the peaks and valleys of the low-frequency response, and provides a relatively smoother low-frequency frequency response curve. The outer cavity of the cabinet is connected through the conduit 10 to assist in the transmission of sound, which can reduce sound distortion and make the bass sound more natural and pure.

[0038] Working Principle: When using this bandpass subwoofer, the rectangular cabinet structure formed by the outer shell 1, positioning side plate 1, positioning side plate 2, and outer shell 4, along with the zigzag partition formed by inner cavity partition 1, inner cavity partition 2, and inner cavity partition 3, divides the cabinet space into two chambers. The internal holes of inner cavity partition 16 provide installation for the speaker driver 12. The conduit 2 11 passes through inner cavity partition 3 8 to connect the inner chamber, forming an external connection between the inner cavity and the cabinet. Through the rear cavity pipe of the speaker driver 12, the air resonance within the pipe is used to control the driver displacement, achieving higher efficiency. It is installed in conjunction with the support frame 9 located at the upper end of inner cavity partition 2 7, connected to conduit 10. Conduit 10 connects the outer cavity inside the cabinet to the outside. The installation of conduit 10 and conduit 2 11 together forms an acoustic filter, allowing the speaker to concentrate energy in the low-frequency range, increasing the overall practicality.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bandpass subwoofer, comprising: The outer shell of the enclosure is a U-shaped plate structure formed by vertically bonding the plate body. The outer shell of the enclosure is a second enclosure (4) on one side of the opening of the outer shell of the enclosure. The second enclosure (4) and the outer shell of the enclosure are a rectangular wall structure, which constitutes the main outer shell structure of the bass speaker enclosure. The features are as follows: the outer shell 1 (1) and the outer shell 2 (4) form a rectangular box structure, and the two ends of the outer shell 1 (1) and the outer shell 2 (4) are respectively equipped with positioning side plate 1 (2) and positioning side plate 2 (3), the positioning side plate 2 (3) and the outer shell 2 (4) are symmetrically arranged, and the inner layer of the outer shell 2 (4) and the outer shell 1 (1) is provided with a sealing plate, and the outer shell 2 (4) is provided with a mounting hole (5) on one side; The bottom of the inner wall of the outer shell 1 (1) is provided with an inner cavity partition 1 (6) and an inner cavity partition 3 (8), and the inner cavity partition 1 (6) and the inner cavity partition 3 (8) are symmetrically and vertically installed. An inner cavity partition 2 (7) is installed at the top of the inner cavity partition 1 (6) and the inner cavity partition 3 (8), and the inner cavity partition 1 (6), the inner cavity partition 2 (7) and the inner cavity partition 3 (8) form a geometric structure of the inner cavity. The inner cavity partition 1 (6) has a circular opening, and a speaker driver (12) is installed in the circular opening of the inner cavity partition 1 (6).

2. A bandpass subwoofer according to claim 1, characterized in that: The outer shell (1), positioning side plate (2), positioning side plate (3), and outer shell (4) form a rectangular box structure, and the inner layer of positioning side plate (3) and positioning side plate (2) is provided with a sealing element.

3. A bandpass subwoofer according to claim 1, characterized in that: The positioning side plate 2 (3) has equidistant openings inside, and the positioning side plate 2 (3) and the positioning side plate 1 (2) are symmetrically arranged on both sides of the outer shell 1 (1).

4. A bandpass subwoofer according to claim 1, characterized in that: The inner cavity partition 2 (7) is vertically mounted with a support frame (9), and the support frame (9) has a U-shaped opening at its top. The support frame (9) is engaged with the surface of the conduit 1 (10).

5. A bandpass subwoofer according to claim 1, characterized in that: The inner cavity partition three (8) is provided with a round hole structure, and the round hole of the inner cavity partition three (8) is installed through one end of the conduit two (11), and the other end of the conduit two (11) is installed through the positioning side plate two (3).

6. A bandpass subwoofer according to claim 5, characterized in that: The second conduit (11) is arranged parallel to the first conduit (10) in a perpendicular direction, and the diameter of the first conduit (10) is larger than the diameter of the second conduit (11).

7. A bandpass subwoofer according to claim 5, characterized in that: One end of the second conduit (11) is connected to the zigzag internal cavity structure formed by the first internal cavity partition (6), the second internal cavity partition (7), and the third internal cavity partition (8).

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