Front and back sound cavity adjustable intelligent sound box

Abstract

The application relates to an intelligent sound box with adjustable front and rear sound cavities, which comprises a sound box shell, a sound cavity cylinder, a front cavity rotating cylinder, a loudspeaker assembly, a rear cavity adjusting disc, a front driving part, a rear driving part and a control assembly. One end of the sound box shell is provided with a sound outlet. The sound cavity cylinder is a cylindrical structure with an open end. The front cavity rotating cylinder is rotatably arranged on the sound cavity cylinder. The loudspeaker assembly is threadedly connected to the front cavity rotating cylinder, and the loudspeaker assembly and the open end of the sound cavity cylinder form a front sound cavity. The rear cavity adjusting disc is movably arranged in the front cavity rotating cylinder in an axial direction, and the loudspeaker assembly and the rear cavity adjusting disc form a rear sound cavity. The front driving part is used for driving the front cavity rotating cylinder to rotate in a circumferential direction. The rear driving part is used for driving the rear cavity adjusting disc to move in an axial direction. The control assembly is electrically connected with the front driving part and the rear driving part. The volume parameters of the front and rear sound cavities can be adjusted to change the bass and treble effects of the sound box, so that the music effect of the sound box is better.

Description

Technical Field

[0001] This invention relates to the field of audio equipment technology, and in particular to an intelligent speaker with adjustable front and rear acoustic cavities. Background Technology

[0002] Audio equipment is a commonly used sound output device in daily life. With the development of technology, the types and functions of audio equipment are constantly being improved. Miniaturization, digitalization, specialization, and film and television applications are the development trends of audio equipment in recent years. However, traditional audio equipment cannot adjust the size of the sound cavity, resulting in a fixed audio output curve and a monotonous tone that cannot meet the needs of users. Summary of the Invention

[0003] Therefore, the purpose of this invention is to overcome the shortcomings of the prior art and provide a smart speaker with adjustable front and rear acoustic cavities. According to embodiments of the present invention, the smart speaker with adjustable front and rear acoustic cavities changes the high and low frequency effects of the speaker output by adjusting the volume parameters of the front and rear acoustic cavities, thereby improving the overall music output effect.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A smart speaker with adjustable front and rear acoustic cavities, comprising:

[0006] A speaker housing, one end of which is provided with a sound outlet;

[0007] The acoustic cavity is a cylindrical structure with one end open, and the open end of the acoustic cavity abuts against the inner end of the speaker housing where the sound outlet is located.

[0008] A front cavity rotating cylinder, wherein the front cavity rotating cylinder is rotatably disposed on the inner peripheral wall of the sound cavity cylinder body;

[0009] A speaker assembly is threadedly connected to the inner peripheral wall of the front cavity rotating cylinder, and the speaker assembly and the opening end of the sound cavity cylinder form a front sound cavity;

[0010] A rear cavity adjustment plate is axially movable inside the front cavity rotating cylinder, and the outer peripheral wall of the rear cavity adjustment plate forms a clearance fit with the inner peripheral wall of the front cavity rotating cylinder; the end of the speaker assembly away from the opening of the sound cavity cylinder forms a rear sound cavity with the rear cavity adjustment plate;

[0011] A front drive unit, the front drive unit being used to drive the front cavity rotating cylinder to rotate circumferentially;

[0012] A rear drive unit, which is used to drive the rear cavity adjustment plate to move axially;

[0013] A control component, which is electrically connected to the front drive unit and the rear drive unit respectively.

[0014] Therefore, according to the present invention, the intelligent speaker with adjustable front and rear sound cavities can control the position of the speaker assembly in the sound cavity cylinder through the front drive component, thereby adjusting the size of the front and rear sound cavities, and can control the position of the rear cavity adjustment plate in the rear sound cavity through the rear drive component, thereby adjusting the size of the rear sound cavity. It can be understood that the open end of the sound cavity cylinder of the present invention abuts against the inner end of the speaker housing with the sound outlet hole, so that the sound emitted by the speaker assembly can pass through the sound outlet hole to the outside. The front cavity rotating cylinder is rotatably fitted on the inner wall of the sound cavity cylinder, the speaker assembly is threadedly connected to the inner wall of the front cavity rotating cylinder, and the rear cavity adjustment plate is located on the side of the speaker assembly away from the sound outlet hole. In this way, the inner wall of the front cavity rotating cylinder, the speaker assembly and the open end of the sound cavity cylinder together form the front sound cavity of the speaker, and the inner wall of the front cavity rotating cylinder, the speaker assembly and the rear cavity adjustment plate together form the rear sound cavity of the speaker. Specifically, the front drive unit can drive the front cavity rotating cylinder to rotate axially within the sound cavity body. Since the front cavity rotating cylinder and the speaker assembly are connected by a thread, the rotation of the front cavity rotating cylinder simultaneously drives the speaker assembly to move axially, thereby changing the volume of the front and rear sound cavities. Furthermore, the rear drive unit can drive the rear cavity adjusting plate to move axially within the front cavity rotating cylinder. This changes the distance between the rear cavity adjusting plate and the speaker assembly; in other words, the volume of the rear sound cavity can be adjusted by controlling the axial movement of the rear cavity adjusting plate. Therefore, this invention can change the high and low frequency effects of the audio output by adjusting the volume of the front and rear sound cavities, resulting in a better music effect for the intelligent speaker and better meeting the diverse needs of users.

[0015] In one embodiment, the horn assembly includes a horn mounting base and a horn unit, the horn unit being fixedly disposed in the horn mounting base; the outer peripheral wall of the horn mounting base is provided with a first external thread, and the inner peripheral wall of the front cavity rotating cylinder is provided with a first internal thread that is threadedly connected to the first external thread; when the front drive member drives the front cavity rotating cylinder to rotate circumferentially, the front cavity rotating cylinder can drive the horn mounting base to move in the axial direction.

[0016] In one embodiment, the front cavity rotating cylinder is a cylindrical structure with openings at both ends; the inner peripheral wall of the sound cavity cylinder is recessed outward to form an annular groove, and the outer peripheral wall of the front cavity rotating cylinder extends outward to form an annular protrusion, and the annular protrusion is rotatably disposed in the annular groove.

[0017] In one embodiment, an annular toothed belt is provided on the inner wall of the end of the front cavity rotating cylinder away from the opening of the sound cavity cylinder. The front drive component includes a front servo motor and a front drive gear. The front servo motor is electrically connected to the control component. The front servo motor is provided with a front drive shaft. The front drive shaft passes through the closed end of the sound cavity cylinder and extends into the interior of the sound cavity cylinder. The front drive gear is coaxially mounted on the front drive shaft and meshes with the annular toothed belt. The front servo motor is used to drive the front drive shaft to rotate, thereby driving the front drive gear to rotate. The front drive gear is used to drive the annular toothed belt to rotate circumferentially.

[0018] In one embodiment, a guide sleeve extends outward along the axial direction from the middle of the end of the acoustic cavity cylinder away from its opening. The opening direction of the guide sleeve is consistent with the opening direction of the acoustic cavity cylinder, and a second internal thread is provided on the inner peripheral wall of the guide sleeve. The rear cavity adjusting plate has a disc-shaped structure, and a connecting sleeve extends outward along the axial direction from the middle of the end of the rear cavity adjusting plate away from the speaker assembly. A second external thread is provided on the outer peripheral wall of the connecting sleeve, which is threaded to the second internal thread. The rear driving member passes through the guide sleeve and is drivenly connected to the connecting sleeve. The rear driving member is used to drive the connecting sleeve to rotate circumferentially.

[0019] In one embodiment, the rear drive unit includes a rear servo motor, which is electrically connected to the control component. The rear servo motor is provided with a rear drive shaft, and the outer peripheral wall of the rear drive shaft is provided with annular external teeth. A rotating chuck is provided in the connecting sleeve. The rotating chuck is a hollow structure with openings at both ends. The inner peripheral wall of the rotating chuck is provided with annular internal teeth that mesh with the annular external teeth. The rear drive shaft passes through the guide sleeve and is inserted into the rotating chuck, so that the annular external teeth and the annular internal teeth are engaged and connected.

[0020] In one embodiment, the connecting sleeve is a cylindrical structure with one end open. A keyway groove is provided on the inner wall of the connecting sleeve along the axial direction. The rotating chuck is rotatably disposed inside the connecting sleeve. A keyway rib is provided on the outer peripheral wall of the rotating chuck along the axial direction. The keyway groove is slidably fitted onto the keyway rib. The rear servo motor drives the rear drive shaft to rotate circumferentially. The rear drive shaft drives the rotating chuck to rotate circumferentially. The rotating chuck drives the connecting sleeve to rotate circumferentially. While rotating circumferentially, the connecting sleeve moves axially along the second internal thread of the guide sleeve.

[0021] In one embodiment, the acoustic cavity body includes a main body and an acoustic cavity fixing seat. The main body is a cylindrical structure with openings at both ends. One end of the main body abuts against the inner end of the speaker housing, which has a sound outlet hole. An annular mounting portion is provided on the outer peripheral wall of the other end of the main body. The diameter of the acoustic cavity fixing seat is equal to the diameter of the mounting seat. The acoustic cavity fixing seat covers the main body and the mounting portion, and the acoustic cavity fixing seat and the mounting portion are detachably fixedly connected.

[0022] In one embodiment, the control component includes a control panel and an audio processing integrated circuit. The control panel is disposed on the outer wall of the speaker housing, and the audio processing integrated circuit is disposed inside the speaker housing. The control panel and the audio processing integrated circuit are electrically connected. The audio processing integrated circuit is electrically connected to the front drive component and the rear drive component, respectively.

[0023] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the intelligent speaker with adjustable front and rear acoustic cavities according to the present invention.

[0025] Figure 2 This is a schematic diagram of the internal structure of the intelligent speaker with adjustable front and rear acoustic cavities according to the present invention;

[0026] Figure 3 This is an exploded view of the intelligent speaker with adjustable front and rear acoustic cavities according to the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the intelligent speaker with adjustable front and rear acoustic cavities of the present invention, without the speaker housing.

[0028] Figure 5 This is one of the cross-sectional schematic diagrams of the intelligent speaker with adjustable front and rear acoustic cavities of the present invention, without the speaker housing;

[0029] Figure 6 This is the second cross-sectional schematic diagram of the intelligent speaker with adjustable front and rear acoustic cavities of the present invention, without the speaker housing.

[0030] Figure 7 This is the third cross-sectional schematic diagram of the intelligent speaker with adjustable front and rear acoustic cavities of the present invention, with the speaker housing removed.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Speaker housing; 11. Sound outlet; 20. Sound cavity cylinder; 21. Annular groove; 22. Guide sleeve; 23. Second internal thread; 24. Main cylinder; 25. Sound cavity fixing seat; 26. Fixing part; 27. Mounting part; 30. Front cavity rotating cylinder; 31. Annular protrusion; 32. First internal thread; 33. Annular toothed belt; 40. Speaker assembly; 41. Speaker fixing seat; 42. Speaker unit; 43. First external thread; 50. Rear cavity adjusting plate; 51. Connecting sleeve; 52. Second external thread; 53. Rotating chuck; 54. Key rib; 55. Key slide groove; 60. Front drive component; 61. Front servo motor; 62. Front drive gear; 70. Rear drive component; 71. Rear servo motor; 72. Rear drive shaft; 80. Audio processing integrated circuit; 81. Control panel. Detailed Implementation

[0033] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention, primarily used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention.

[0034] Common audio equipment is a frequently used sound output device in daily life. With the development of technology, the types and functions of audio equipment are constantly being improved. Miniaturization, digitalization, specialization, and film and television applications are the development trends of audio equipment in recent years. However, traditional audio equipment cannot adjust the size of the sound cavity, resulting in a fixed audio output curve and a monotonous sound that cannot meet the needs of users.

[0035] In view of this, the present invention provides an intelligent speaker with adjustable front and rear acoustic cavities. According to an embodiment of the present invention, the intelligent speaker with adjustable front and rear acoustic cavities can change the high and low frequency effects of the speaker output by adjusting the volume parameters of the front and rear acoustic cavities, thereby improving the music output effect.

[0036] Please see Figures 1 to 7This invention provides an intelligent speaker with adjustable front and rear acoustic cavities, including a speaker housing 10, an acoustic cavity cylinder 20, a front cavity rotating cylinder 30, a speaker assembly 40, a rear cavity adjusting plate 50, a front drive component 60, a rear drive component 70, and a control assembly. One end of the speaker housing 10 is provided with a sound outlet 11. The acoustic cavity cylinder 20 is a cylindrical structure with one open end, and the open end of the acoustic cavity cylinder 20 abuts against the inner end of the speaker housing 10 where the sound outlet 11 is located. The front cavity rotating cylinder 30 is rotatably mounted on the inner peripheral wall of the acoustic cavity cylinder 20. The speaker assembly 40 is threadedly connected to the inner peripheral wall of the front cavity rotating cylinder 30. The speaker assembly 40 and the opening end of the acoustic cavity cylinder 20 form a front acoustic cavity. The rear cavity adjustment disk 50 is axially movable inside the front cavity rotating cylinder 30, and the outer peripheral wall of the rear cavity adjustment disk 50 forms a clearance fit with the inner peripheral wall of the front cavity rotating cylinder 30. The end of the speaker assembly 40 away from the opening of the acoustic cavity cylinder 20 and the rear cavity adjustment disk 50 form a rear acoustic cavity. The front drive member 60 is used to drive the front cavity rotating cylinder 30 to rotate circumferentially. The rear drive member 70 is used to drive the rear cavity adjustment disk 50 to move axially. The control component is electrically connected to the front drive member 60 and the rear drive member 70 respectively.

[0037] Therefore, according to the present invention, the position of the speaker assembly 40 in the sound cavity cylinder 20 can be controlled by the front drive member 60, thereby adjusting the volume of the front and rear sound cavities. Similarly, the position of the rear cavity adjustment disc 50 in the rear sound cavity can be controlled by the rear drive member 70, thereby adjusting the volume of the rear sound cavity. It can be understood that the opening end of the sound cavity cylinder 20 abuts against the inner end of the speaker housing 10 with the sound outlet 11, so that the sound emitted by the speaker assembly 40 can be emitted from the sound cavity cylinder 20. The sound outlet 11 extends to the outside. The front cavity rotating cylinder 30 is rotatably fitted onto the inner wall of the sound cavity cylinder 20. The speaker assembly 40 is threaded onto the inner wall of the front cavity rotating cylinder 30. The rear cavity adjusting plate 50 is located on the side of the speaker assembly 40 away from the sound outlet 11. In this way, the inner wall of the front cavity rotating cylinder 30, the speaker assembly 40 and the open end of the sound cavity cylinder 20 together form the front sound cavity of the speaker, and the inner wall of the front cavity rotating cylinder 30, the speaker assembly 40 and the rear cavity adjusting plate 50 together form the rear sound cavity of the speaker. Specifically, the front drive unit 60 drives the front cavity rotating cylinder 30 to rotate axially on the sound cavity cylinder 20. Since the front cavity rotating cylinder 30 and the speaker assembly 40 are connected by a thread, the rotation of the front cavity rotating cylinder 30 drives the speaker assembly 40 to move axially, thereby changing the volume of the front and rear sound cavities. Furthermore, the rear drive unit 70 drives the rear cavity adjusting plate 50 to move axially within the front cavity rotating cylinder 30. This changes the distance between the rear cavity adjusting plate 50 and the speaker assembly 40, meaning that the volume of the rear sound cavity can be adjusted by controlling the axial movement of the rear cavity adjusting plate 50. Therefore, this invention can change the high and low frequency effects of the audio output by adjusting the volume of the front and rear sound cavities, resulting in better music performance for the smart speaker and better meeting the different needs of users.

[0038] Specifically, in this embodiment of the invention, the horn assembly 40 includes a horn mounting base 41 and a horn unit 42, the horn unit 42 being fixedly disposed in the horn mounting base 41; the outer peripheral wall of the horn mounting base 41 is provided with a first external thread 43, and the inner peripheral wall of the front cavity rotating cylinder 30 is provided with a first internal thread 32 that is threadedly connected to the first external thread 43; when the front drive member 60 drives the front cavity rotating cylinder 30 to rotate circumferentially, the front cavity rotating cylinder 30 can drive the horn mounting base 41 to move in the axial direction. The front cavity rotating cylinder 30 is a cylindrical structure with openings at both ends; the inner peripheral wall of the sound cavity cylinder 20 is recessed outward to form an annular groove 21, and the outer peripheral wall of the front cavity rotating cylinder 30 extends outward to form an annular protrusion 31, the annular protrusion 31 being rotatably disposed in the annular groove 21.

[0039] This can be understood as follows: when the current driving component 60 drives the front cavity rotating cylinder 30 to rotate circumferentially, the annular groove 21 on the inner wall of the sound cavity cylinder 20 limits the annular protrusion 31 on the outer wall of the front cavity rotating cylinder 30 in the axial direction, so that the front cavity rotating cylinder 30 can only rotate circumferentially and cannot be displaced in the axial direction. In this way, the front cavity rotating cylinder 30 can drive the speaker mounting base 41 to rotate through the first internal thread 32 on the inner wall, thereby causing the speaker mounting base 41 to move in the axial direction along the trajectory of the first internal thread 32, thereby realizing the adjustment of the axial displacement of the speaker assembly 40, so that the volume of the front and rear sound cavities can be adjusted.

[0040] To facilitate the drive connection between the front drive unit 60 and the front cavity rotating cylinder 30, in this embodiment of the invention, an annular toothed belt 33 is provided on the inner wall of the end of the front cavity rotating cylinder 30 away from the opening of the sound cavity cylinder 20. The front drive unit 60 includes a front servo motor 61 and a front drive gear 62. The front servo motor 61 is electrically connected to the control component. The front servo motor 61 is provided with a front drive shaft. The front drive shaft passes through the closed end of the sound cavity cylinder 20 and extends into the interior of the sound cavity cylinder 20. The front drive gear 62 is coaxially mounted on the front drive shaft and meshes with the annular toothed belt 33. The front servo motor 61 is used to drive the front drive shaft to rotate, thereby driving the front drive gear 62 to rotate. The front drive gear 62 is used to drive the annular toothed belt 33 to rotate circumferentially, thereby synchronously driving the entire front cavity rotating cylinder 30 to rotate circumferentially.

[0041] Additionally, a guide sleeve 22 extends outward along the axial direction from the middle of the end of the acoustic cavity body 20 away from its opening. The opening direction of the guide sleeve 22 is consistent with the opening direction of the acoustic cavity body 20, and a second internal thread 23 is provided on the inner peripheral wall of the guide sleeve 22. The rear cavity adjusting plate 50 has a disc-shaped structure. A connecting sleeve 51 extends outward along the axial direction from the middle of the end of the rear cavity adjusting plate 50 away from the speaker assembly 40. A second external thread 52 is provided on the outer peripheral wall of the connecting sleeve 51, which is threadedly connected to the second internal thread 23. The rear driving member 70 passes through the guide sleeve 22 and is drivenly connected to the connecting sleeve 51. The rear driving member 70 is used to drive the connecting sleeve 51 to rotate circumferentially.

[0042] Furthermore, the rear drive unit 70 includes a rear servo motor 71, which is electrically connected to the control component. The rear servo motor 71 is provided with a rear drive shaft 72, and the outer peripheral wall of the rear drive shaft 72 is provided with annular external teeth. The connecting sleeve 51 is provided with a rotating chuck 53, which is a hollow structure with openings at both ends. The inner peripheral wall of the rotating chuck 53 is provided with annular internal teeth that mesh with the annular external teeth. The rear drive shaft 72 passes through the guide sleeve 22 and is inserted into the rotating chuck 53, so that the annular external teeth and the annular internal teeth are engaged and connected. In this embodiment of the invention, the connecting sleeve 51 is a cylindrical structure with one open end. A keyway groove 55 is provided on the inner wall of the connecting sleeve 51 along the axial direction. The rotating chuck 53 is rotatably disposed inside the connecting sleeve 51. A keyway rib 54 is provided on the outer peripheral wall of the rotating chuck 53 along the axial direction. The keyway groove 55 is slidably fitted onto the keyway rib 54. The rear servo motor 71 drives the rear drive shaft 72 to rotate circumferentially. The rear drive shaft 72 drives the rotating chuck 53 to rotate circumferentially. The rotating chuck 53 drives the connecting sleeve 51 to rotate circumferentially. While rotating circumferentially, the connecting sleeve 51 moves axially along the second internal thread 23 of the guide sleeve 22.

[0043] This can be understood as follows: when the rear drive unit 70 drives the rotating chuck 53 to rotate circumferentially, the rotating chuck 53 drives the connecting sleeve 51 to rotate synchronously through the key rib 54. At the same time, due to the threaded connection between the second internal thread 23 of the guide sleeve 22 and the second external thread 52 of the connecting sleeve 51, the connecting sleeve 51 moves axially along the trajectory of the second internal thread 23. The key groove 55 of the connecting sleeve 51 will adaptively slide on the key rib 54, thereby achieving the effect of driving the rear cavity adjustment plate 50 to move axially through the rear drive unit 70.

[0044] In other words, according to the embodiment of the present invention, the front and rear acoustic chambers of the intelligent speaker can be adjusted by adjusting the displacement of the speaker assembly 40 along the axial direction through the front drive member 60, thereby enabling accurate parameter adjustment of the size of the front acoustic chamber; and the rear cavity adjustment disk 50 can be adjusted along the axial direction through the rear drive member 70 to further enable accurate parameter adjustment of the size of the rear acoustic chamber.

[0045] In this embodiment of the invention, the control component includes a control panel 81 and an audio processing integrated circuit 80. The control panel 81 is disposed on the outer wall of the speaker housing 10, and the audio processing integrated circuit 80 is disposed inside the speaker housing 10. The control panel 81 and the audio processing integrated circuit 80 are electrically connected. The audio processing integrated circuit 80 is electrically connected to the front drive member 60 and the rear drive member 70, respectively.

[0046] The audio processing integrated circuit 80 is electrically connected to the front servo motor 61 and the rear servo motor 71, and also electrically connected to the speaker unit 42 to control the sound output of the speaker unit 42. The control panel 81 is located on the outer wall of the sound cavity housing for convenient user control of the smart speaker. Additionally, a Bluetooth unit can be installed on the audio processing integrated circuit 80 to allow users to wirelessly connect their mobile phones to the Bluetooth unit for control via their smartphones.

[0047] In some embodiments of the present invention, the acoustic cavity body 20 includes a main body 24 and an acoustic cavity fixing seat 25. The main body 24 is a cylindrical structure with openings at both ends. One end of the main body 24 abuts against the inner end of the speaker housing 10 where a sound outlet 11 is provided. An annular mounting portion 27 is provided on the outer peripheral wall of the other end of the main body 24. The diameter of the acoustic cavity fixing seat 25 is equal to the diameter of the mounting seat. The acoustic cavity fixing seat 25 covers the main body 24 and the mounting portion 27, and the acoustic cavity fixing seat 25 and the mounting portion 27 are detachably fixedly connected. In addition, in order to facilitate fixing the acoustic cavity body 20 to the acoustic cavity housing, an annular fixing portion 26 is provided on the outer peripheral wall of the end of the main body 24 connected to the sound outlet 11. In this way, the fixing portion 26 can be fixed to the speaker housing 10 by means of screws or the like. This can be understood as the sound cavity fixing seat 25 being detachably connected to the mounting part 27 of the main body 24, which facilitates the assembly of parts inside the sound cavity body 20.

[0048] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting this invention.

[0049] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the range of adjustable acoustic chambers in intelligent speakers before and after the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A smart speaker with adjustable front and rear acoustic cavities, characterized in that, include: A speaker housing, wherein a sound outlet is provided at one end of the speaker housing; The acoustic cavity is a cylindrical structure with one end open, and the open end of the acoustic cavity abuts against the inner end of the speaker housing where the sound outlet is located. A front cavity rotating cylinder is rotatably disposed on the inner peripheral wall of the sound cavity cylinder body; A speaker assembly is threadedly connected to the inner peripheral wall of the front cavity rotating cylinder, and the speaker assembly and the opening end of the sound cavity cylinder form a front sound cavity; A rear cavity adjustment plate is axially movable inside the front cavity rotating cylinder, and the outer peripheral wall of the rear cavity adjustment plate forms a clearance fit with the inner peripheral wall of the front cavity rotating cylinder; the end of the speaker assembly away from the opening of the sound cavity cylinder forms a rear sound cavity with the rear cavity adjustment plate; A front drive unit, which is used to drive the front cavity rotating cylinder to rotate circumferentially; A rear drive unit, which is used to drive the rear cavity adjustment plate to move axially; A control component, which is electrically connected to the front drive unit and the rear drive unit respectively.

2. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 1, characterized in that: The horn assembly includes a horn mounting base and a horn unit, the horn unit being fixedly disposed in the horn mounting base; the outer peripheral wall of the horn mounting base is provided with a first external thread, and the inner peripheral wall of the front cavity rotating cylinder is provided with a first internal thread that is threadedly connected to the first external thread; when the front drive member drives the front cavity rotating cylinder to rotate circumferentially, the front cavity rotating cylinder can drive the horn mounting base to move in the axial direction.

3. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 1, characterized in that: The front cavity rotating cylinder is a cylindrical structure with openings at both ends; the inner peripheral wall of the sound cavity cylinder is recessed outward to form an annular groove, and the outer peripheral wall of the front cavity rotating cylinder extends outward to form an annular protrusion, and the annular protrusion is rotatably disposed in the annular groove.

4. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 3, characterized in that: An annular toothed belt is provided on the inner wall of the end of the front cavity rotating cylinder away from the opening of the sound cavity cylinder. The front drive component includes a front servo motor and a front drive gear. The front servo motor is electrically connected to the control component. The front servo motor is provided with a front drive shaft. The front drive shaft passes through the closed end of the sound cavity cylinder and extends into the interior of the sound cavity cylinder. The front drive gear is coaxially mounted on the front drive shaft and meshes with the annular toothed belt. The front servo motor is used to drive the front drive shaft to rotate, which in turn drives the front drive gear to rotate, and the front drive gear is used to drive the annular toothed belt to rotate circumferentially.

5. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 1, characterized in that: A guide sleeve extends axially outward from the middle of the end of the acoustic cavity cylinder away from its opening. The opening direction of the guide sleeve is consistent with the opening direction of the acoustic cavity cylinder, and a second internal thread is provided on the inner peripheral wall of the guide sleeve. The rear cavity adjusting plate has a disc-shaped structure. A connecting sleeve extends axially outward from the middle of the end of the rear cavity adjusting plate away from the speaker assembly. A second external thread is provided on the outer peripheral wall of the connecting sleeve, which is threaded to the second internal thread. The rear driving member passes through the guide sleeve and is drivenly connected to the connecting sleeve. The rear driving member is used to drive the connecting sleeve to rotate circumferentially.

6. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 5, characterized in that: The rear drive unit includes a rear servo motor, which is electrically connected to the control component. The rear servo motor is provided with a rear drive shaft, and the outer peripheral wall of the rear drive shaft is provided with annular external teeth. A rotating chuck is provided in the connecting sleeve. The rotating chuck is a hollow structure with openings at both ends. The inner peripheral wall of the rotating chuck is provided with annular internal teeth that mesh with the annular external teeth. The rear drive shaft passes through the guide sleeve and is inserted into the rotating chuck, so that the annular external teeth and the annular internal teeth are engaged and connected.

7. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 6, characterized in that: The connecting sleeve is a cylindrical structure with one end open. A keyway groove is provided on the inner wall of the connecting sleeve along the axial direction. The rotating chuck is rotatably disposed inside the connecting sleeve. A keyway rib is provided on the outer peripheral wall of the rotating chuck along the axial direction. The keyway groove is slidably fitted on the keyway rib. The rear servo motor is used to drive the rear drive shaft to rotate circumferentially. The rear drive shaft is used to drive the rotating chuck to rotate circumferentially. The rotating chuck is used to drive the connecting sleeve to rotate circumferentially. While rotating circumferentially, the connecting sleeve moves axially along the second internal thread of the guide sleeve.

8. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 1, characterized in that: The acoustic cavity body includes a main body and an acoustic cavity fixing seat. The main body is a cylindrical structure with openings at both ends. One end of the main body abuts against the inner end of the speaker housing, which has a sound outlet hole. The outer peripheral wall of the other end of the main body is provided with an annular mounting part. The diameter of the acoustic cavity fixing seat is equal to the diameter of the mounting seat. The acoustic cavity fixing seat covers the main body and the mounting part, and the acoustic cavity fixing seat and the mounting part are detachably fixedly connected.

9. The intelligent speaker with adjustable front and rear acoustic cavities according to claim 1, characterized in that: The control component includes a control panel and an audio processing integrated circuit. The control panel is disposed on the outer wall of the speaker housing, and the audio processing integrated circuit is disposed inside the speaker housing. The control panel and the audio processing integrated circuit are electrically connected. The audio processing integrated circuit is electrically connected to the front drive component and the rear drive component, respectively.

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