Intelligent interactive sound box

Abstract

The utility model discloses an intelligent interactive sound box, which comprises a sound box, a mounting box arranged at the front end of the sound box, hinge lugs arranged on two sides of the mounting box, a first swing plate capable of swinging back and forth arranged on the hinge lugs, and a hinge shaft barrel arranged at the front end of the mounting box, a first swing plate capable of swinging up and down is hinged to the hinge shaft cylinder, and a second swing plate capable of swinging up and down is hinged to the hinge shaft cylinder and comprises a first driving assembly, a first driving module, a second driving assembly, a second driving module and an MCU control module. When a consumer plays music, the swinging amplitude of the first swinging plate and the second swinging plate can change along with the frequency of music rhythm through swinging of the first swinging plate and the second swinging plate, and the faster the music rhythm is, the faster the swinging amplitude of the first swinging plate and the second swinging plate is, and the slower the swinging amplitude of the first swinging plate and the second swinging plate is. Therefore, the fish-head-shaped leather sheath is more real when simulating singing.

Description

Technical Field

[0001] The utility model relates to the field of smart speakers, in particular to a smart interactive speaker. Background Art

[0002] A speaker is the terminal of the entire audio system. Its function is to convert audio electrical energy into corresponding sound energy and radiate it into space. It is an extremely important part of the audio system because it is responsible for the crucial task of converting electrical signals into sound signals for people's ears to directly listen to. It has to directly interact with people's hearing, and people's hearing is very sensitive and has a strong ability to distinguish the timbre of complex sounds. Since the subjective feeling of sound by the human ear is the most important criterion for evaluating the sound quality of an audio system, the performance of the speaker plays a key role in the sound quality of an audio system. Traditionally, speaker devices only have the functions of ordinary tactile buttons or touch buttons, and the control method is single, resulting in a poor user experience in actual use. Therefore, there has emerged a function of controlling the speaker by gestures in the existing market. However, with the development of society, the competition of commodities is becoming more and more fierce, and traditional-function speakers are difficult to attract consumers. There is a need to design a speaker that can interact with consumers to enhance the fun of consumers when enjoying music. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a smart interactive speaker.

[0004] To achieve the above purpose, the utility model adopts the following solutions:

[0005] A smart interactive speaker includes a speaker. An installation box is provided at the front end of the speaker. Hinged ears are provided on both sides of the installation box. A first swing plate that can swing back and forth is provided on the hinged ears. A hinged shaft cylinder is provided at the front end of the installation box. A second swing plate that can swing up and down is hinged on the hinged shaft cylinder:

[0006] A first driving component. A first installation cavity is provided in the installation box. A first driving component that can drive the first swing plate to swing back and forth is provided in the first installation cavity;

[0007] A first driving module. A first driving module that can drive the first driving component to work is provided in the first installation cavity;

[0008] A second driving component. A second installation cavity is provided at the front end of the installation box. A second driving component that can drive the second swing plate to swing up and down is provided in the second installation cavity;

[0009] A second driving module. A second driving module that can drive the second driving component to work is provided in the second installation cavity;

[0010] The MCU control module is provided with an MCU control module that can separately control the operation of the first driving module and the second driving module below the installation box at the front end of the speaker. When consumers use this utility model, they can control the operation of the speaker through voice and gestures. This utility model can control the operation of the speaker through the voice module and the gesture sensing module. When consumers are listening to music, the first swing plate and the second swing plate can swing, enabling the fish head-shaped leather case to follow the rhythm of the music and appear to be singing, thereby enhancing the extra pleasure of consumers when listening to music. The swinging amplitude of the first swing plate and the second swing plate can change according to the frequency of the music rhythm. The faster the music rhythm, the faster the swinging amplitude of the first swing plate and the second swing plate, and vice versa, so that the fish head-shaped leather case can imitate singing more realistically.

[0011] As a preferred embodiment of this utility model, the installation box includes a front box and a rear box that cooperate with each other. The first installation cavity is arranged between the front box and the rear box. The hinge ears are respectively arranged on the side walls of the front box and the rear box. A front end box is provided at the front end of the front box. A front end cover is provided on one side of the front end box. The second installation cavity is arranged between the front end box and the front end cover. The hinge shaft cylinders are respectively arranged on the side walls of the front end box and the front end cover. A support plate is provided at the top of the front ends of the front box and the rear box.

[0012] As a further embodiment of this utility model, a fish head-shaped leather case is provided at the front end of the speaker. The fish head-shaped leather case can wrap the installation box and the MCU control module. The first swing plate is wrapped in the fish fin of the fish head-shaped leather case. The second swing plate is arranged in the lower lip of the fish mouth of the fish head-shaped leather case. The support plate is arranged in the upper lip of the fish mouth of the fish head-shaped leather case.

[0013] As a further embodiment of this utility model, the first driving module includes a first driving motor arranged in the first installation cavity. A first driving gear is provided at the output end of the first driving motor. The first driving component is connected to the first driving gear.

[0014] As a further embodiment of this utility model, the first driving component includes a first swing gear fixed on the hinge shaft of the first swing plate. In the first installation cavity, first gear sets that can respectively connect the first swing gear and the first driving gear are arranged on both sides of the first driving gear. A direction conversion gear is arranged between one of the first gear sets and the first driving gear.

[0015] As a further embodiment of this utility model, the second driving module includes a driving motor mounting seat arranged at the lower end of the front end box. A second driving motor is mounted on the mounting seat. The output end of the second driving motor extends into the second installation cavity and is fixed with a second driving gear. The second driving component is connected to the second driving module.

[0016] As a further solution of the utility model, the second driving assembly includes a second swing gear fixed on the intersection shaft of the second swing plate, and a second gear set that can connect the second driving gear and the second swing gear is provided in the second mounting cavity.

[0017] As a preferred solution of the utility model, the MCU control module is composed of an MCU controller, a voice module, a gesture sensing module, and an audio power amplification module.

[0018] As a preferred solution of the utility model, the voice module and the gesture sensing module are respectively a voice controller and a sensing switch.

[0019] As an optimal solution of the utility model, a speaker generating area is provided at the top of the front end of the speaker, a bracket is hinged at the rear end of the speaker, a bracket storage cavity is provided at the rear end of the speaker, a hanging hole is provided at the top of the rear end of the speaker, a battery installation cavity is provided at the lower part of the rear end of the speaker, and a power switch is provided on one side of the battery installation cavity.

[0020] To sum up, the utility model has the following beneficial effects compared with the prior art: the utility model can control the operation of the speaker through the voice module and the gesture sensing module, and can make the fish head shaped leather cover look like singing along with the rhythm of the music through the swing of the first swing plate and the second swing plate when the consumer listens to music, thereby increasing the extra fun of the consumer when listening to music, and the swing amplitude of the first swing plate and the second swing plate can change with the frequency of the music rhythm. The faster the music rhythm, the faster the swing amplitude of the first swing plate and the second swing plate, and vice versa. In this way, the fish head shaped leather cover can be made more realistic when imitating singing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is one of the three-dimensional views of the present utility model.

[0022] Figure 2 This is the second stereoscopic view of the utility model.

[0023] Figure 3 This is the third stereoscopic view of the present utility model.

[0024] Figure 4 This is an exploded view of the utility model.

[0025] Figure 5 This is a structural view of the first drive assembly and the first drive module in the utility model.

[0026] Figure 6 This is a structural view of the second drive assembly and the second drive module in the present invention.

[0027] Figure 7 This is a view of the operating principle of the present utility model.

[0028] Description of the reference numerals in the drawings: 1. Speaker; 2. Hinge ear; 3. First swing plate; 20. Installation box; 4. Hinge shaft cylinder; 5. Second swing plate; 7. First installation cavity; 30. First drive assembly; 40. First drive module; 50. Second drive assembly; 6. Second installation cavity; 60. Second drive module; 70. MCU control module; 21. Front box; 22. Rear box; 23. Front end box; 24. Front end cover; 25. Support plate; 100. Fish head-shaped leather cover; 41. First drive motor; 42. First drive gear; 31. First swing gear; 32. First gear set; 33. Direction conversion gear; 61. Motor mounting seat; 62. Second drive motor; 63. Second drive gear; 51. Second swing gear; 52. Second gear set; 71. MCU controller; 72. Voice module; 73. Gesture sensing module; 74. Audio power amplification module; 91. Speaker sound generation area; 92. Bracket; 93. Bracket storage cavity; 94. Hanging hole; 95. Battery installation cavity; 96. Power switch. Detailed implementation manners

[0029] The following specific implementation content provides multiple different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be restrictive. Additionally, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the utility model and do not represent a specific relationship between the different embodiments and / or structures being discussed.

[0030] Furthermore, spatial-related terms may be used, such as "below...", "lower side", "from the inside out", "above", "upper side", and similar terms. These relational terms are for facilitating the description of the relationship between some elements or features in the drawings and other elements or features. These spatial relational terms include different orientations of the device during use or operation, as well as the orientations described in the drawings. The device may be rotated to different orientations or other positions, and the spatial-related adjectives used may be interpreted accordingly. Therefore, it should not be construed as a limitation to the utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] The following further describes the utility model in conjunction with the description of the drawings and the specific implementation manners: As Figures 1 to 7An intelligent interactive speaker shown in the figure includes a speaker 1. A mounting box 20 is provided at the front end of the speaker 1. Hinge ears 2 are provided on both sides of the mounting box 20. A first swing plate 3 that can swing back and forth is provided on the hinge ears 2. A hinge shaft cylinder 4 is provided at the front end of the mounting box 20. A second swing plate 5 that can swing up and down is hinged on the hinge shaft cylinder 4:

[0032] A first driving assembly 30. A first installation cavity 5 is provided in the mounting box 20. A first driving assembly 30 that can drive the first swing plate 3 to swing back and forth is provided in the first installation cavity 5;

[0033] A first driving module 40. A first driving module 40 that can drive the first driving assembly 30 to work is provided in the first installation cavity 5;

[0034] A second driving assembly 50. A second installation cavity 6 is provided at the front end of the mounting box 20. A second driving assembly 50 that can drive the second swing plate 5 to swing up and down is provided in the second installation cavity 6;

[0035] A second driving module 60. A second driving module 60 that can drive the second driving assembly 50 to work is provided in the second installation cavity 6;

[0036] An MCU control module 70. An MCU control module 70 that can respectively control the first driving module 40 and the second driving module 60 to work is provided below the mounting box 20 at the front end of the speaker 1.

[0037] A further embodiment of the mounting box 20 in the present utility model: The mounting box 20 includes a front box 21 and a rear box 22 that cooperate with each other. The first installation cavity 5 is arranged between the front box 21 and the rear box 22. The hinge ears 2 are respectively arranged on the side walls of the front box 21 and the rear box 22. A front end box 23 is provided at the front end of the front box 21. A front end cover 24 is provided on one side of the front end box 23. The second installation cavity 6 is arranged between the front end box 23 and the front end cover 24. The hinge shaft cylinder 4 is respectively provided on the side walls of the front end box 23 and the front end cover 24. A support plate 25 is provided at the top of the front ends of the front box 21 and the rear box 22.

[0038] Further embodiment of the speaker 1 in the present utility model: A fish head-shaped leather sleeve 100 is provided at the front end of the speaker 1. The fish head-shaped leather sleeve 100 can wrap the mounting box 20 and the MCU control module 70. The first swing plate 3 is wrapped in the fin of the fish head-shaped leather sleeve 100. The second swing plate 5 is arranged in the lower lip of the fish mouth of the fish head-shaped leather sleeve 100. The support plate 25 is arranged in the upper lip of the fish mouth of the fish head-shaped leather sleeve 100. In the initial state, the fish head-shaped leather sleeve 100 can be made to imitate the appearance of singing through the first swing plate 3 and the second swing plate 5. When the first swing plate 3 swings, the fins on the fish head leather sleeve 100 will swing back and forth. When the second swing plate 5 swings, the lower lip of the fish mouth of the fish head-shaped leather sleeve 100 can swing up and down, causing the fish mouth on the fish head-shaped leather sleeve 100 to open and close as if singing.

[0039] Further embodiment of the first driving module 40 in the present utility model: The first driving module 40 includes a first driving motor 41 arranged in the first installation cavity 5. A first driving gear 42 is provided at the output end of the first driving motor 41. The first driving assembly 30 is connected to the first driving gear 42. The first driving motor 41 is a motor that can rotate forward and backward. Under the control of the MCU controller 71, the forward and backward rotation speed of the first driving motor 41 can be adjusted. The faster the rhythm of the song being played detected by the MCU controller 71, the faster the forward and backward rotation speed of the first driving motor 41, and vice versa.

[0040] Further embodiment of the first driving assembly 30 in the present utility model: The first driving assembly 30 includes a first swing gear 31 fixed on the hinge shaft of the first swing plate 3. A first gear set 32 that can be respectively connected to the first swing gear 31 and the first driving gear 42 is provided on both sides of the first driving gear 42 in the first installation cavity 5. A direction conversion gear 33 is provided between one of the first gear sets 32 and the first driving gear 42. Through the first gear set 32, the first driving motor 41 controls the first swing plate 3 to imitate the swinging of the fins when the fish head-shaped leather sleeve 100 is singing.

[0041] Further embodiment of the second driving module 60 in the present utility model: The second driving module 60 includes a driving motor mounting seat 61 arranged at the lower end of the front end box 23. A second driving motor 62 is mounted on the mounting seat 61. The output end of the second driving motor 62 extends into the second installation cavity 6 and is fixed with a second driving gear 63. The second driving assembly 50 is connected to the second driving module 60. The second driving motor 62 can rotate forward and backward. Under the control of the MCU controller 71, the second swing plate 5 can be made to swing up and down. The faster the rhythm of the song being played detected by the MCU controller 71, the faster the forward rotation speed of the second driving motor 62, and vice versa.

[0042] Further embodiment of the second drive assembly 50 in the present utility model: The second drive assembly 50 includes a second swing gear 51 fixed on the connecting shaft of the second swing plate 5. A second gear set 52 capable of connecting the second drive gear 63 and the second swing gear 51 is provided in the second installation cavity 6. The second drive motor 62 controls the second swing plate 5 through the second gear set 52, imitating the opening and closing of the fish lips of the fish head-shaped leather sleeve 100 during singing.

[0043] Further embodiment of the MCU control module 70 in the present utility model: The MCU control module 70 is composed of an MCU controller 71, a voice module 72, a gesture sensing module 73, and an audio power amplification module 74. The MCU controller 71 (Microcontroller Unit; MCU, also known as a single-chip microcomputer or single-chip microcontroller) reduces the frequency and specifications of the central processing unit (Central Process Unit; CPU) appropriately and integrates peripherals such as memory, counter, USB, A / D conversion, UART, PLC, DMA, and even the LCD driver circuit on a single chip to form a chip-level computer for different combinations of control in different application scenarios. It can be seen in mobile phones, PC peripherals, remote controls, automotive electronics, industrial stepper motors, robot arm control, etc. A storage module and a WiFi module are integrated on the MCU controller 71, which can store songs uploaded via WiFi. The audio power amplification module is a device that reconstructs the input audio signal on the output element that generates sound, and the reconstructed signal volume and power level should be ideal - true, effective, and with low distortion. The audio range is approximately 20 Hz to 20,000 Hz, so the amplifier must have a good frequency response within this range (smaller when driving a frequency-band-limited speaker, such as a woofer or tweeter). Depending on the application, the power varies greatly, from milliwatts for headphones to several watts for TV or PC audio, to dozens of watts for "mini" home stereos and car audio, and up to hundreds of watts or more for larger home and commercial audio systems, large enough to meet the sound requirements of an entire cinema or auditorium.

[0044] Further embodiment of the MCU control module 70 in the present utility model: The voice module 72 and the gesture sensing module 73 are a voice controller and a sensing switch respectively. The user can start or turn off the speaker 1 through voice, and can also switch songs through voice. The user can also slide in front of the gesture sensing module 73 with a gesture, which can also turn on and off the speaker 1. Clockwise is to turn on the speaker 1, and counterclockwise is to turn off the speaker 1. At the same time, after the speaker 1 is turned on, the first drive module 40 and the second drive module 60 will also start synchronously, such as Figure 2 and Figure 4As shown: The induction switch can be an infrared induction switch, a light sensor switch or a human body induction switch.

[0045] A further embodiment of the speaker 1 in the present utility model: A speaker sound generating area 91 is provided at the top of the front end of the speaker 1, a bracket 92 is hinged at the rear end of the speaker 1, a bracket storage cavity 93 is provided at the rear end of the speaker 1, a hanging hole 94 is provided at the top of the rear end of the speaker 1, a battery installation cavity 95 is provided at the lower part of the rear end of the speaker 1, and a power switch 96 is provided on one side of the battery installation cavity 95.

[0046] During use: In the initial state, the fish-head-shaped leather case 100 can imitate the appearance of singing through the first swing plate 3 and the second swing plate 5. When the first swing plate 3 swings, the fins on the fish-head leather case 100 will swing back and forth. When the second swing plate 5 swings, the lower lip of the fish mouth of the fish-head-shaped leather case 100 can swing up and down, causing the fish mouth on the fish-head-shaped leather case 100 to open and close as if singing. The first driving motor 41 is a motor that can rotate forward and backward. Under the control of the MCU controller 71, the forward and backward rotation speed of the first driving motor 41 can be adjusted. The faster the rhythm of the song being played detected by the MCU controller 71, the faster the forward rotation speed of the first driving motor 41, and vice versa. The first driving motor 41 controls the first swing plate 3 through the first gear set 32 to imitate the swinging of the fins when the fish-head-shaped leather case 100 is singing. The second driving motor 62 can rotate forward and backward. Under the control of the MCU controller 71, it can make the second swing plate 5 swing up and down. The faster the rhythm of the song being played detected by the MCU controller 71, the faster the forward rotation speed of the second driving motor 62, and vice versa. The second driving motor 62 controls the second swing plate 5 through the second gear set 52 to imitate the opening and closing of the fish lips when the fish-head-shaped leather case 100 is singing. The MCU controller 71, Microcontroller Unit; MCU, also known as a single-chip microcomputer or microcontroller, is to appropriately reduce the frequency and specifications of the Central Processing Unit; CPU, and integrate peripherals such as memory, counter, USB, A / D conversion, UART, PLC, DMA, and even the LCD driving circuit on a single chip to form a chip-level computer for different combinations of control in different application scenarios. Such as mobile phones, PC peripherals, remote controls, to automotive electronics, industrial stepper motors, control of robotic arms, etc., the figure of the MCU can be seen. The storage module and WiFi module are integrated on the MCU controller 71, and it can store songs uploaded through WiFi. The audio power amplifier module is a device that reconstructs the input audio signal on the output component that generates sound, and the reconstructed signal volume and power level should be ideal - true, effective, and with low distortion. The audio range is approximately 20Hz to 20000Hz, so the amplifier must have a good frequency response within this range. When driving a speaker with a limited frequency band, such as a bass speaker or a tweeter, it should be smaller.Depending on the application, the power varies greatly, from milliwatts for headphones to several watts for TV or PC audio, to dozens of watts for "mini" home stereos and car audio, and up to hundreds of watts or more for larger home and commercial audio systems, large enough to meet the sound requirements of an entire cinema or auditorium. The user can also slide his hand in front of the gesture sensing module 73, which can also turn the speaker 1 on and off. Turning clockwise turns the speaker 1 on, and turning counterclockwise turns the speaker 1 off. At the same time, after the speaker 1 is turned on, the first drive module 40 and the second drive module 60 will also start synchronously, as shown in. Figure 2 and Figure 4 shown: The induction switch can be an infrared induction switch, a light sensor switch or a human body induction switch.

[0047] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. An intelligent interactive speaker, comprising a speaker (1), with an installation box (20) provided at the front end of the speaker (1), hinge ears (2) provided on both sides of the installation box (20), a first swing plate (3) that can swing back and forth provided on the hinge ears (2), a hinge shaft cylinder (4) provided at the front end of the installation box (20), and a second swing plate (5) that can swing up and down hinged on the hinge shaft cylinder (4), characterized in that: A first drive assembly (30), with a first installation cavity (7) provided in the installation box (20), and a first drive assembly (30) that can drive the first swing plate (3) to swing back and forth provided in the first installation cavity (7); A first drive module (40), with a first drive module (40) that can drive the first drive assembly (30) to work provided in the first installation cavity (7); A second drive assembly (50), with a second installation cavity (6) provided at the front end of the installation box (20), and a second drive assembly (50) that can drive the second swing plate (5) to swing up and down provided in the second installation cavity (6); A second drive module (60), with a second drive module (60) that can drive the second drive assembly (50) to work provided in the second installation cavity (6); An MCU control module (70), with an MCU control module (70) that can respectively control the first drive module (40) and the second drive module (60) to work provided below the installation box (20) at the front end of the speaker (1).

2. The intelligent interactive speaker according to claim 1, characterized in that, The installation box (20) includes a front box (21) and a rear box (22) that cooperate with each other. The first installation cavity (7) is provided between the front box (21) and the rear box (22). The hinge ears (2) are respectively provided on the side walls of the front box (21) and the rear box (22). A front end box (23) is provided at the front end of the front box (21). A front end cover (24) is provided on one side of the front end box (23). The second installation cavity (6) is provided between the front end box (23) and the front end cover (24). The hinge shaft cylinder (4) is respectively provided on the side walls of the front end box (23) and the front end cover (24). A support plate (25) is provided at the top of the front ends of the front box (21) and the rear box (22).

3. The intelligent interactive speaker according to claim 2, characterized in that, A fish head-shaped leather cover (100) is provided at the front end of the speaker (1). The fish head-shaped leather cover (100) can wrap the installation box (20) and the MCU control module (70). The first swing plate (3) is wrapped in the fish fin of the fish head-shaped leather cover (100). The second swing plate (5) is provided in the lower lip of the fish mouth of the fish head-shaped leather cover (100). The support plate (25) is provided in the upper lip of the fish mouth of the fish head-shaped leather cover (100).

4. An intelligent interactive speaker according to claim 1, characterized in that, The first drive module (40) includes a first drive motor (41) provided in the first installation cavity (7). A first drive gear (42) is provided at the output end of the first drive motor (41). The first drive assembly (30) is connected to the first drive gear (42).

5. An intelligent interactive speaker according to claim 4, wherein, The first driving component (30) includes a first swing gear (31) fixed to the hinge shaft of the first swing plate (3). A first gear set (32) capable of connecting the first swing gear (31) and the first driving gear (42) respectively is provided on both sides of the first driving gear (42) in the first installation cavity (7). A direction conversion gear (33) is provided between one of the first gear sets (32) and the first driving gear (42).

6. An intelligent interactive speaker according to claim 2, characterized in that, The second driving module (60) includes a driving motor mounting seat (61) provided at the lower end of the front end box (23). A second driving motor (62) is mounted on the mounting seat (61). The output end of the second driving motor (62) extends into the second installation cavity (6) and is fixed with a second driving gear (63). The second driving component (50) is connected to the second driving module (60).

7. An intelligent interactive speaker according to claim 6, characterized in that, The second driving component (50) includes a second swing gear (51) fixed to the connecting shaft of the second swing plate (5). A second gear set (52) capable of connecting the second driving gear (63) and the second swing gear (51) is provided in the second installation cavity (6).

8. An intelligent interactive speaker according to claim 1, wherein, The MCU control module (70) is composed of an MCU controller (71), a voice module (72), a gesture sensing module (73), and an audio power amplification module (74).

9. An intelligent interactive speaker according to claim 8, wherein, The voice module (72) and the gesture sensing module (73) are a voice controller and a sensing switch respectively.

10. An intelligent interactive speaker according to claim 1, characterized in that, A speaker sounding area (91) is provided at the top of the front end of the speaker (1). A bracket (92) is hinged to the rear end of the speaker (1). A bracket storage cavity (93) is provided at the rear end of the speaker (1). A hanging hole (94) is provided at the top of the rear end of the speaker (1). A battery installation cavity (95) is provided at the lower part of the rear end of the speaker (1). A power switch (96) is provided on one side of the battery installation cavity (95).

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