Sound cavity mounting structure in sound box

Abstract

The utility model discloses a sound box inner sound cavity installation structure in the sound box related technical field, which comprises an inner sound cavity rear shell and an inner sound cavity front shell, an installation matching flange is integrally formed on the inner side surface of the inner sound cavity rear shell, an arch-bridge-shaped air guide pipe is arranged in a cavity between the inner sound cavity rear shell and the inner sound cavity front shell, and the inner sound cavity rear shell and the inner sound cavity front shell are provided with an installation matching flange. And a fixed bottom plate is arranged at one end of the contact surface of the arch-bridge-shaped air guide pipe and the inner sound cavity rear shell. According to the utility model, the cross section of the air guide pipe is designed into an arch shape, so that the air guide pipe does not need to be disassembled into two pieces and can meet the mold process, then the inner sound cavity rear shell is welded by using the ultrasonic process, the inner sound cavity rear shell and the front shell are ultrasonically welded together to form a component, and finally the loudspeaker is assembled on the component. One air pipe component and a manual operation cotton pasting process can be effectively saved, the problem of poor sealing caused by instability of manual operation cotton pasting is solved, the assembling process is simplified, and economic benefits are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field related to speaker boxes, and specifically relates to a sound cavity installation structure in a speaker box. Background Art

[0002] A speaker is a device that converts audio signals into sound. Generally speaking, it refers to a speaker cabinet or subwoofer housing with a built-in power amplifier that amplifies the audio signal before replaying it, making it louder. The speaker is the terminal of the entire sound system, converting electrical energy into sound energy and radiating it into the air. It is a crucial component of the sound system, responsible for converting electrical signals into sound signals for direct human hearing. Existing speakers have an independent internal sound chamber and an air duct with a circular or runway-shaped cross-section. The air duct consists of two components, an upper shell and a lower shell. To facilitate mold processing, the air duct is typically split into two components, ultrasonically welded together, and then screwed to the rear shell of the internal sound chamber. Cotton is then applied to the front shell to prevent air leakage. The front and rear shells are then screwed together to form a single component, and the speaker is then mounted on top. This results in complex assembly and high cost. Utility Model Content

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a sound cavity installation structure in a speaker. To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0004] A sound cavity installation structure in a speaker box includes an inner sound cavity rear shell and an inner sound cavity front shell. A mounting fitting flange is integrally formed on the inner side surface of the inner sound cavity rear shell. An arch bridge-shaped air duct is provided in the cavity between the inner sound cavity rear shell and the inner sound cavity front shell. A fixed bottom plate is provided at one end of the contact surface between the arch bridge-shaped air duct and the inner sound cavity rear shell. A mounting fitting groove is provided on the bottom surface of the fixed bottom plate. The shape, size and specification of the mounting fitting groove match the mounting fitting flange. A fixing ear is provided on the outer side of the fixed bottom plate. A matching hole is processed on the fixing ear. A matching column matching the matching hole is provided on the position outside the mounting fitting flange on the inner sound cavity rear shell.

[0005] As a further solution of the present invention: the cross-section of the matching column is a cross-shaped structure, and the position, quantity and specifications of the matching column are adapted to the matching holes on the fixing ears, so as to improve the installation accuracy of the arch bridge-shaped air duct.

[0006] As a further solution of the present invention: the installation matching groove of the arch-bridge-shaped air duct and the installation matching flange of the inner sound cavity rear shell are fixed by ultrasonic welding, thereby enhancing the stability and sealing of the arch-bridge-shaped air duct installation.

[0007] As a further solution of the present invention: the cross-section of the arch bridge-shaped air duct is a double arch shape, an air guide cavity is provided in the arch bridge-shaped air duct, an open end is provided at one end of the air guide cavity, and the open end is designed as a trumpet structure.

[0008] As a further solution of the present invention: welding matching grooves and welding matching protrusions are respectively provided on the joint surfaces of the inner sound cavity rear shell and the inner sound cavity front shell, and the welding matching protrusions of the inner sound cavity front shell and the welding matching grooves of the inner sound cavity rear shell are fixed by ultrasonic welding.

[0009] As a further solution of the present invention: a mounting groove is provided on the front shell of the inner sound cavity, a loudspeaker is mounted in the mounting groove, and the loudspeaker is fixedly connected to the front shell of the inner sound cavity by screws.

[0010] The cross-sectional shape of the air duct of the utility model is designed to be an arch shape, so that it does not need to be disassembled into two parts and can meet the mold process. It is then welded to the rear shell of the inner sound cavity using an ultrasonic process, and then the rear shell of the inner sound cavity and the front shell are ultrasonically welded together to become one component. Finally, the speaker is assembled on it, which can effectively save an air duct component and the manual cotton pasting process, solve the problem of poor sealing caused by the instability of manual cotton pasting, simplify the assembly process, and improve economic benefits.

[0011] The rear shell of the inner sound cavity of the utility model is provided with an installation matching flange that is compatible with the shape and specifications of the arch bridge-shaped air duct, and a matching column is provided on the outside of the installation matching flange, which can effectively position the installation of the arch bridge-shaped air duct and ensure the installation accuracy and stability of the arch bridge-shaped air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an exploded view of the present utility model;

[0013] Figure 2 This is a schematic diagram of the appearance of the utility model;

[0014] Figure 3 This is the main sectional view of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the arch bridge-shaped air duct of the present invention when viewed from above;

[0016] Figure 5 This is a schematic diagram of the structure of the arch-bridge-shaped air duct of the present invention when viewed from above;

[0017] Figure 6 This is a schematic diagram of the interior of the rear shell of the inner sound cavity of the present invention.

[0018] Figure 7 This is a schematic diagram of the rear shell structure of the inner sound cavity of the present invention.

[0019] In the figure: 1. Rear shell of inner sound cavity; 2. Arch-bridge-shaped air duct; 3. Front shell of inner sound cavity; 4. Speaker; 5. Screw; 6. Welding matching groove; 7. Welding matching protrusion; 8. Installation matching flange; 9. Installation matching groove; 10. Fixed bottom plate; 11. Fixed ear; 12. Matching hole; 13. Matching column; 14. Air guide cavity; 15. Open end. DETAILED DESCRIPTION

[0020] like Figures 1 to 7 As shown, a sound cavity installation structure in a speaker includes an inner sound cavity rear shell 1 and an inner sound cavity front shell 3. A mounting fitting flange 8 is integrally formed on the inner side surface of the inner sound cavity rear shell 1, and an arch bridge-shaped air duct 2 is provided in the cavity between the inner sound cavity rear shell 1 and the inner sound cavity front shell 3. A fixed bottom plate 10 is provided at one end of the contact surface between the arch bridge-shaped air duct 2 and the inner sound cavity rear shell 1, and a mounting fitting groove 9 is provided on the bottom surface of the fixed bottom plate 10. The shape, size and specification of the mounting fitting groove 9 match the mounting fitting flange 8. A fixing ear 11 is provided on the outer side of the fixed bottom plate 10, and a matching hole 12 is processed on the fixing ear 11. A matching column 13 matching the matching hole 12 is provided on the position outside the mounting fitting flange 8 on the inner sound cavity rear shell 1.

[0021] The cross section of the matching column 13 is a cross-shaped structure, and the position, quantity and specifications of the matching column 13 are adapted to the matching holes 12 on the fixing ears 11 , so as to improve the installation accuracy of the arch-shaped air duct 2 .

[0022] The mounting fitting groove 9 of the arch-bridge-shaped air duct 2 and the mounting fitting flange 8 of the inner sound cavity rear shell 1 are fixed by ultrasonic welding, thereby enhancing the stability and sealing of the installation of the arch-bridge-shaped air duct 2 .

[0023] The cross section of the arch bridge-shaped air duct 2 is a double arch shape. An air guide cavity 14 is provided in the arch bridge-shaped air duct 2. An open end 15 is provided at one end of the air guide cavity 14. The open end 15 is designed as a trumpet structure.

[0024] The joint surfaces of the inner sound cavity rear shell 1 and the inner sound cavity front shell 3 are respectively provided with welding matching grooves 6 and welding matching protrusions 7. The welding matching protrusions 7 of the inner sound cavity front shell 3 and the welding matching grooves 6 of the inner sound cavity rear shell 1 are fixed by ultrasonic welding.

[0025] An installation slot is provided on the front shell 3 of the inner sound cavity, and a speaker 4 is installed in the installation slot. The speaker 4 is fixedly connected to the front shell 3 of the inner sound cavity by screws 5.

[0026] The working principle of the present utility model is as follows: the arch bridge-shaped air duct 2, the inner sound cavity front shell 3, and the inner sound cavity rear shell 1 are all made of plastic materials; the surfaces of the inner sound cavity rear shell 1 and the arch bridge-shaped air duct 2 are polished, and the surface of the inner sound cavity front shell 3 is sun-textured; the cross-sectional shape of the arch bridge-shaped air duct 2 is designed to be a double arch shape; during installation, the mounting matching groove 9 of the arch bridge-shaped air duct 2 is matched with the mounting matching flange 8 in the inner sound cavity rear shell 1, and the matching hole 12 is matched with the position of the matching column 13, and the assembly is then combined; thereafter, the arch bridge-shaped air duct 2 is welded to the inner sound cavity rear shell 1 using an ultrasonic process, and then the welding matching groove 6 of the inner sound cavity rear shell 1 is matched with the welding matching protrusion 7 of the inner sound cavity front shell 3, and they are welded together using ultrasonic technology; finally, the speaker 4 is fixedly mounted in the corresponding mounting groove on the inner sound cavity front shell 3 by screws 5, so that it forms an independent inner sound cavity body;

[0027] The cross-sectional shape of the air duct of the present invention is designed to be an arch shape, so that it does not need to be disassembled into two parts and can meet the mold process. It is then welded to the inner sound cavity rear shell 1 using an ultrasonic process, and then the inner sound cavity rear shell 1 and the front shell are ultrasonically welded together to become a component. Finally, the speaker 4 is assembled on it, which can effectively save one air duct component and the manual cotton pasting process, solve the problem of poor sealing caused by the instability of manual cotton pasting, simplify the assembly process, and improve economic benefits. The inner sound cavity rear shell 1 is provided with an installation matching flange 8 that is compatible with the shape and specifications of the arch bridge-shaped air duct 2, and a matching column 13 is provided on the outside of the installation matching flange 8, which can effectively position the installation of the arch bridge-shaped air duct 2 to ensure the installation accuracy and installation stability of the arch bridge-shaped air duct 2.

[0028] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with this patent can make slight changes or modifications to equivalent embodiments using the above-mentioned technical content without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. A sound box inner cavity installation structure, comprising an inner cavity rear shell (1) and an inner cavity front shell (3), characterized in that: The inner side surface of the inner sound cavity rear shell (1) is integrally formed with a mounting fitting flange (8); an arch bridge-shaped air duct (2) is provided in the cavity between the inner sound cavity rear shell (1) and the inner sound cavity front shell (3); a fixed base plate (10) is provided at one end of the contact surface between the arch bridge-shaped air duct (2) and the inner sound cavity rear shell (1); a mounting fitting groove (9) is provided on the bottom surface of the fixed base plate (10); the shape, size and specification of the mounting fitting groove (9) match the mounting fitting flange (8); a fixing ear (11) is provided on the outer side of the fixed base plate (10); a matching hole (12) is processed on the fixing ear (11); a matching column (13) matching the matching hole (12) is provided on the inner sound cavity rear shell (1) at a position outside the mounting fitting flange (8).

2. The sound cavity installation structure in a speaker box according to claim 1, characterized in that: The cross section of the matching column (13) is a cross-shaped structure, and the position, quantity and specifications of the matching column (13) are adapted to the matching hole (12) on the fixing ear (11).

3. The sound cavity installation structure in a speaker box according to claim 1, characterized in that: The mounting fitting groove (9) of the arch bridge-shaped air duct (2) and the mounting fitting flange (8) of the inner sound cavity rear shell (1) are fixed by ultrasonic welding.

4. The sound cavity installation structure in a speaker box according to claim 1, characterized in that: The cross section of the arch bridge-shaped air duct (2) is in the shape of a double arch. An air guide cavity (14) is provided in the arch bridge-shaped air duct (2). An opening end (15) is provided at one end of the air guide cavity (14). The opening end (15) is designed as a bell-mouth structure.

5. The sound cavity installation structure in a speaker box according to claim 1, characterized in that: The joint surfaces of the inner sound cavity rear shell (1) and the inner sound cavity front shell (3) are respectively provided with welding matching grooves (6) and welding matching protrusions (7), and the welding matching protrusions (7) of the inner sound cavity front shell (3) and the welding matching grooves (6) of the inner sound cavity rear shell (1) are fixed by ultrasonic welding.

6. The sound cavity installation structure in a speaker box according to claim 1, characterized in that: The inner sound cavity front shell (3) is provided with a mounting groove, in which a loudspeaker (4) is mounted, and the loudspeaker (4) is fixedly connected to the inner sound cavity front shell (3) via screws (5).

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