Sound box with adjustable sound cavity

Abstract

The utility model relates to the technical field of sound boxes, in particular to a sound box with an adjustable sound cavity, which comprises a sound box shell, protective screen plates, a loudspeaker main body and an adjusting assembly, the sound box shell is of a hollow structure, a plurality of notches are arranged on the sound box shell, the protective screen plates are connected to the notches, the position of the loudspeaker main body corresponds to the protective screen plates, and the adjusting assembly is arranged on the loudspeaker main body. The adjusting assembly is connected to the sound box shell, and the adjusting assembly comprises a fixed shell, a movable shell and a splicing assembly. According to the utility model, when the volume of the sound cavity is increased through the movement of the two movable shells in the direction far away from the fixed shell, the plurality of splice plates arranged on the movable shells move synchronously, and the plurality of splice plates move to be flush with the fixed shell when the movable shells move to a certain position. The problems that sound wave propagation is affected and the sound quality is reduced due to steps generated by the appearances of the movable shell and the fixed shell in the sound cavity are solved.

Description

Technical Field

[0001] This utility model relates to the field of speaker technology, specifically to a speaker with an adjustable sound cavity. Background Technology

[0002] A speaker is a device used to amplify and amplify sound. It typically consists of one or more speaker drivers, an acoustic cavity, and an electronic amplifier. The main function of a speaker is to convert electrical signals into sound and then amplify the sound through the loudspeakers to propagate it into the surrounding environment.

[0003] Chinese Patent No. CN216625977U discloses an audio device, including a loudspeaker, a first housing, and a second housing. The first housing has an open first chamber, and the second housing has an open second chamber. The side wall of the second chamber has a first opening, and the loudspeaker is installed in the first opening. The first housing and the second housing are connected, and the first chamber and the second chamber communicate with each other to form a sound cavity. The audio device also includes an adjustment component connected between the first housing and the second housing, which allows the first chamber to move relative to the second chamber along the axial direction of the first housing or the second housing under the action of the adjustment component, thereby adjusting the volume of the sound cavity.

[0004] However, in the above technical solution, the volume of the sound cavity can only be adjusted by the first chamber moving relative to the second chamber along the axial direction of the first or second housing under the action of the adjustment component. However, in this device, after the protrusion and the first mounting part are connected and adjusted by threads, they will form a stepped surface. The stepped surface will cause sound waves to scatter and reflect, affecting the sound quality of the speaker. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a speaker with an adjustable acoustic cavity.

[0006] The technical solution of this utility model is as follows: A speaker with an adjustable acoustic cavity includes a speaker shell, which is a hollow structure with multiple notches on the shell, and protective mesh plates connected to the notches; two speaker bodies symmetrically arranged and connected to the speaker shell; and an adjustment assembly connected to the shell, comprising a fixed shell, a movable shell, and splicing components. The fixed shell is connected to the shell, and the speaker bodies are connected to the fixed shell. Two symmetrically arranged movable shells are located at both ends of the fixed shell, and multiple splicing components are connected to the movable shells. Each splicing component includes elastic members and splicing plates, with the splicing plates located on the outside of the fixed shell. The two ends of the elastic members are respectively connected to the splicing plates and the movable shells. In use, the movable shells move away from the fixed shells, and the elastic members push the splicing plates closer together to form a splicing shell that overlaps with the fixed shell, increasing the volume of the acoustic cavity.

[0007] Preferably, the speaker housing consists of a fixed cylinder and two movable cylinders. The fixed cylinder is connected to the protective mesh plate, and the movable cylinders are threadedly connected to the fixed cylinder.

[0008] Preferably, the adjustment assembly further includes multiple connecting blocks, with both ends of the connecting blocks connected to the fixed housing and the speaker housing respectively; and a partition plate connected to the fixed housing, which divides the fixed housing into two rear acoustic chambers corresponding to the speaker bodies.

[0009] Preferably, the splicing assembly also includes movable rods, the number of which corresponds to the splicing panels. The movable rods are slidably connected in through holes opened in the fixed housing, and limit blocks are connected to the movable rods. A reset assembly is disposed on the fixed housing. When the reset assembly is in use, the fixed end of the reset assembly contacts the splicing panel and pushes it away from the fixed housing.

[0010] Preferably, there are four splicing panels, two of which are symmetrically arranged and have a wider width than the other two symmetrically arranged splicing panels, and each splicing panel is fitted with a sealing gasket on its outer side.

[0011] Preferably, the reset assembly includes multiple guide rods, which are connected to the fixed housing. Each guide rod has an inclined rod at the end near the movable housing, and a mating block connected to the splicing plate. The mating block is slidably connected to the inclined surface of the guide rod.

[0012] Preferably, multiple grooves are provided on the outer side of the fixed housing, and each groove is rotatably connected with a ball bearing.

[0013] Preferably, each movable cylinder is connected to a connecting ring, and the connecting ring has anti-slip texture.

[0014] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0015] In this invention, when the volume of the sound cavity is increased by moving the two movable shells away from the fixed shell, multiple splicing plates set on the movable shells will also move synchronously. When the movable shells move to a certain position, the multiple splicing plates will move to be flush with the fixed shells, thus avoiding the problem of sound wave propagation and sound quality reduction caused by the step shape of the movable shells and the fixed shells inside the sound cavity. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view;

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A;

[0019] Figure 4 This is a schematic diagram of the splicing component structure;

[0020] Figure 5 This is a schematic diagram illustrating the usage status of the splicing components.

[0021] Reference numerals: 1. Speaker housing; 2. Protective mesh plate; 3. Speaker body; 4. Fixed housing; 5. Movable housing; 6. Elastic element; 7. Splicing plate; 8. Fixed cylinder; 9. Movable cylinder; 10. Connecting block; 11. Divider plate; 12. Moving rod; 13. Limiting block; 14. Sealing gasket; 15. Guide rod; 16. Mating block; 17. Ball bearing. Detailed Implementation

[0022] Example 1

[0023] like Figures 1-5 As shown, the present invention proposes an adjustable speaker enclosure, comprising a speaker housing 1, a protective mesh plate 2, a speaker body 3, and an adjustment assembly. The speaker housing 1 has a hollow structure and multiple notches are provided on the speaker housing 1, with the protective mesh plate 2 connected to the notches. Two speaker bodies 3 are symmetrically arranged and connected to the speaker housing 1. The positions of the speaker bodies 3 correspond to the protective mesh plate 2.

[0024] In an optional embodiment, the speaker housing 1 consists of a fixed cylinder 8 and two movable cylinders 9. The fixed cylinder 8 is connected to the protective mesh plate 2. The fixed cylinder 8 has a hollow structure and a notch for mounting the speaker body 3 is provided on the fixed cylinder 8. The movable cylinders 9 are threadedly connected to the fixed cylinder 8.

[0025] In an optional embodiment, each movable cylinder 9 is connected to a connecting ring, and the connecting ring is provided with anti-slip texture.

[0026] The adjustment assembly is connected to the speaker housing 1. The adjustment assembly includes a fixed housing 4, a movable housing 5, and a splicing assembly. The fixed housing 4 is connected to the speaker housing 1, and the speaker body 3 is connected to the fixed housing 4.

[0027] In an optional embodiment, a plurality of grooves are provided on the outer side of the fixed housing 4, and each groove is rotatably connected with a ball bearing 17; the ball bearing 17 can reduce the friction between the splicing plate 7 and the surface of the fixed housing 4 when the splicing plate 7 moves, and avoid the wear caused by friction from affecting the sound quality;

[0028] Two symmetrically arranged movable housings 5 ​​are located at both ends of the fixed housing 4, and multiple splicing components are connected to the movable housings 5;

[0029] The splicing assembly includes elastic elements 6 and splicing plates 7. Multiple splicing plates 7 are disposed on the outside of the fixed housing 4. The two ends of multiple elastic elements 6 are respectively connected to the splicing plates 7 and the movable housing 5. In use, the movable housing 5 is away from the fixed housing 4, and the elastic elements 6 push the splicing plates 7 closer to each other to form a splicing housing that overlaps with the fixed housing 4, increasing the volume of the sound cavity.

[0030] Example 2

[0031] like Figure 2 As shown, the present invention proposes an adjustable acoustic cavity speaker. Compared with Embodiment 1, this embodiment describes the detailed structure of the adjustment component. The adjustment component also includes a connecting block 10 and a partition plate 11. Multiple connecting blocks 10 are distributed. The two ends of the connecting blocks 10 are respectively connected to the fixed housing 4 and the speaker housing 1. The partition plate 11 is connected to the fixed housing 4 and divides the fixed housing 4 into two rear acoustic cavities corresponding to the speaker bodies 3.

[0032] Example 3

[0033] like Figures 4-5 As shown, this utility model proposes an adjustable sound cavity speaker. Compared with Embodiment 2, this embodiment describes the detailed structure of the splicing assembly. The splicing assembly also includes a moving rod 12, a limiting block 13, and a reset assembly. The number of moving rods 12 corresponds to the number of splicing plates 7. The moving rods 12 are slidably connected in the through holes opened on the fixed housing 4. The limiting block 13 is connected to the moving rod 12. The reset assembly is disposed on the fixed housing 4. When the reset assembly is in use, the fixed end of the reset assembly contacts the splicing plate 7 and pushes it away from the fixed housing 4.

[0034] In an optional embodiment, there are four splicing panels 7, two of which are symmetrically arranged and have a wider width than the other two symmetrically arranged splicing panels 7. Each splicing panel 7 is fitted with a sealing gasket 14 on its outer side. The splicing panels 7 are arranged in different sizes so that when they come into contact with each other, they can form a sealed space through the contact of the sealing gasket 14 to improve the sound quality.

[0035] The reset assembly includes guide rods 15 and mating blocks 16. There are eight guide rods 15, which are connected to the fixed housing 4. Each guide rod 15 has an inclined surface at the end near the movable housing 5. The number of mating blocks 16 is twice that of the guide rods 15. The mating blocks 16 are connected to both ends of the splicing plate 7 and are slidably connected to the inclined surface of the guide rods 15.

[0036] In summary, when using this utility model, the user can control the on / off state and volume of the speaker body 3 via the control panel installed on the speaker housing 1. If it is necessary to adjust the sound cavity to enhance the sound quality of the speaker, the user rotates the connecting ring on the moving cylinder 9 to drive the moving cylinder 9 to rotate. The moving cylinder 9 moves away from the fixed cylinder 8 along the central axis of the fixed cylinder 8. While the moving cylinder 9 moves, it will drive the moving housing 5 to move synchronously through the bearing connection with the moving housing 5. The moving housing 5 moves away from the fixed housing 4 to increase the volume of the sound cavity and improve the sound quality. At the same time, when the moving housing 5 moves, it will drive the splicing plate 7 to move synchronously through the moving rod 12. The splicing plate 7 moves on the ball bearings 17 set on the outside of the fixed housing 4 to reduce friction and prevent damage to the splicing plate 7 to avoid affecting the sound quality. As the splicing plate 7 moves, the splicing plate 7 loses the fixed housing 4 and After the ball bearing 17 is restricted, the elastic element 6 rebounds and resets. The moving rod 12 and the limiting block 13 move synchronously. The limiting block 13 restricts the distance and range of movement of the splicing plate 7. The elastic element 6 pushes the splicing plate 7 to move so that the two wide and two narrow splicing plates 7 are spliced ​​into a splicing shell with the same size as the fixed shell 4. This is to prevent the problem of sound wave scattering and sound quality degradation caused by steps when adjusting the sound cavity. The presence of multiple splicing components means that when adjusting to different levels of the sound cavity, the splicing components will be spliced ​​in sequence for matching. When the sound cavity is reset, the moving cylinder 9 is rotated in the opposite direction. The inclined surface of one end of the guide rod 15 will be inserted into the notch on the mating block 16 at both ends of the splicing plate 7. As the movement proceeds, the mating block 16 gradually moves along the inclined surface and gradually enters the guide rod 15 to return to the horizontal position to complete the reset. At this time, the elastic element 6 is compressed, and the splicing plate 7 is located in the cavity formed by the fixed shell 4 and the moving shell 5.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An acoustic enclosure adjustable sound box, characterized in that, The utility model relates to a loudspeaker with adjustable sound cavity volume The utility model provides a loudspeaker with adjustable sound cavity volume, including sound box shell (1) is hollow structure, be equipped with multiple notches on sound box shell (1), and the notch is connected with the protective net board (2); Two loudspeaker bodies (3) are symmetrically arranged, and the loudspeaker body (3) is connected to the sound box shell (1); An adjusting assembly is connected to the sound box shell (1), and the adjusting assembly comprises a fixed shell (4), a moving shell (5) and a splicing assembly, the fixed shell (4) is connected to the sound box shell (1), the loudspeaker body (3) is connected to the fixed shell (4), two symmetrically arranged moving shells (5) are arranged at both ends of the fixed shell (4), a plurality of splicing assemblies are connected to the moving shell (5), the splicing assembly comprises an elastic member (6) and a splicing plate (7), a plurality of splicing plates (7) are arranged on the outer side of the fixed shell (4), and the two ends of a plurality of elastic members (6) are connected to the splicing plate (7) and the moving shell (5) respectively; in the use state, the moving shell (5) is away from the fixed shell (4), the elastic member (6) pushes the splicing plate (7) to be close to each other to form a splicing shell coinciding with the fixed shell (4) to increase the sound cavity volume.

2. The sound chamber adjustable speaker of claim 1, wherein, The sound box shell (1) is composed of a fixed cylinder (8) and two moving cylinders (9), the fixed cylinder (8) is connected to the protective net board (2), and the moving cylinder (9) is threadedly connected to the fixed cylinder (8).

3. The sound chamber adjustable speaker of claim 1, wherein, The adjusting assembly further comprises A plurality of connecting blocks (10) are arranged, and the two ends of the connecting block (10) are connected to the fixed shell (4) and the sound box shell (1) respectively; A partition plate (11) is connected to the fixed shell (4), and the partition plate (11) divides the fixed shell (4) into two rear sound cavities corresponding to the loudspeaker bodies (3).

4. The sound chamber adjustable speaker of claim 1, wherein, The splicing assembly further comprises A plurality of moving rods (12) are arranged, the moving rod (12) is slidably connected to a through hole formed in the fixed shell (4), and a limiting block (13) is connected to the moving rod (12); A reset assembly is arranged on the fixed shell (4); in the use state, the fixed end of the reset assembly is in contact with the splicing plate (7) to push it away from the fixed shell (4).

5. The sound chamber adjustable speaker of claim 1, wherein, The four splicing plates (7) are arranged symmetrically, and the width of two of the four splicing plates (7) is greater than that of the other two splicing plates (7); a sealing gasket (14) is arranged on the outer side of each splicing plate (7).

6. The sound chamber adjustable speaker of claim 4, wherein, The reset assembly comprises A plurality of guide rods (15) are arranged, the guide rod (15) is connected to the fixed shell (4), and an inclined rod is arranged on one end of the guide rod (15) close to the moving shell (5), A cooperating block (16) is connected to the splicing plate (7), and the cooperating block (16) is slidably connected to the inclined surface of the guide rod (15).

7. The sound chamber adjustable speaker of claim 1, wherein, A plurality of grooves are arranged on the outer side of the fixed shell (4), and a rolling ball (17) is rotatably connected to each groove.

8. The sound chamber adjustable speaker of claim 2, wherein, A connecting ring is connected to each moving cylinder (9), and an anti-skid pattern is formed on the connecting ring.

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