Bluetooth sound equipment supporting 3.5 mm audio socket

Abstract

The utility model discloses a Bluetooth sound box supporting a 3.5 mm audio socket, which relates to the technical field of audio, and comprises a circular key, a connecting port is arranged on the circular key, a lens is arranged in the connecting port, the lens is fixedly connected with the circular key, the bottom of the circular key is detachably connected with an upper shell, and the upper shell is fixedly connected with the circular key. The bottom of the upper shell is detachably connected with a silica gel pad, the front end of the upper shell is detachably connected with a front shell, and the front end of the front shell is detachably connected with a front reticulated shell. According to the scheme, the same 3.5 mm audio socket can be used as an audio signal input device and can also be used as an output device, the complexity of circuit design is reduced, the design difficulty of the structural appearance is reduced especially for small Bluetooth sound equipment audio products, the attractiveness of the products is enhanced, and by reducing the simplification of the circuit design and the structural appearance, the production cost is reduced. Therefore, the functions of Bluetooth, AUXI N, ear amplifier output and the like can be realized on the same product.

Description

Technical Field

[0001] The utility model relates to the technical field of audio, and in particular to a Bluetooth speaker supporting a 3.5mm audio socket. Background Art

[0002] Because traditional Bluetooth speakers cannot use the same 3.5MM audio socket as a headphone socket for audio signal output and as an AUX IN audio signal input socket. In the product structure of traditional Bluetooth small speakers, to realize the input and output of audio signals, two 3.5mm audio socket devices are required, one as a headphone socket to realize the output of audio signals; the other as an AUX IN audio signal input socket; this leads to the complexity of the product structure design and increased costs. The 3.5MM audio socket of traditional Bluetooth speakers can only be used as a single headphone socket for audio signal output or a socket for AUX IN audio signal input. However, our speaker can realize the free switching of audio signal input and output on the same 3.5MM audio socket through a 3.5MM audio socket, Bluetooth software and a simple application circuit, so as to achieve the dual effects of saving PCB BOM cost and reducing structural difficulty and product design cost. Utility Model Content

[0003] The purpose of the present invention is to provide a Bluetooth speaker supporting a 3.5mm audio socket to solve at least any one of the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a Bluetooth speaker supporting a 3.5mm audio socket, comprising a circular button, a connecting port being provided on the circular button, a lens being arranged in the connecting port, the lens being fixedly connected to the circular button, an upper shell being detachably connected to the bottom of the circular button, a silicone pad being detachably connected to the bottom of the upper shell, a front end of the upper shell being detachably connected to the front shell, a front end of the front shell being detachably connected to the front mesh shell, a rear end of the upper shell being detachably connected to the rear shell, a rear end of the rear shell being detachably connected to the rear mesh shell, a bottom of the front shell being detachably connected to the bottom shell, a foot pad being detachably connected to the bottom of the bottom shell, a USB sealed box being detachably connected to the top of the bottom shell, a USB cover being detachably connected to the rear end of the USB sealed box, a battery being detachably connected to the top of the rear shell near the front end, an opening being provided on the front shell, a speaker being arranged in the opening, and the speaker being detachably connected to the front shell.

[0005] Preferably, a handle is provided at the rear end of the rear mesh shell, and a handle buckle is detachably connected to the rear end of the handle near the bottom, and the handle buckle passes through the handle and is detachably connected to the rear mesh shell.

[0006] Preferably, an antenna bracket is detachably connected to the left side of the front mesh shell, and a telescopic antenna is detachably connected to the left side of the antenna bracket.

[0007] Preferably, a button bracket shell is detachably connected to the right side of the rear shell, and a bar button is detachably connected to the right side of the button bracket shell.

[0008] Preferably, the upper shell, the front shell, the rear shell, the front mesh shell, the rear mesh shell, the bottom shell, the button bracket shell, the antenna bracket and the USB sealing box are all made of ABS material.

[0009] Preferably, the handle buckle is made of aluminum.

[0010] Preferably, the USB cover, the circular button, the bar button, the handle, the foot pad and the silicone ring are all made of silicone material.

[0011] The beneficial effects of the utility model are as follows:

[0012] In the utility model, the solution realizes that the same 3.5mm audio socket can be used as an audio signal input device and an output device, thereby reducing the complexity of circuit design, especially in small Bluetooth audio products, reducing the difficulty of structural design, and enhancing the aesthetics of the product. By simplifying the circuit design and structural appearance, it is possible to realize Bluetooth, AUX_I N, and headphone amplifier output functions in the same product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the first circuit principle of the utility model;

[0016] Figure 4 This is a schematic diagram of the second circuit principle of the utility model.

[0017] In the figure: 1. upper shell; 2. front shell; 3. back shell; 4. front mesh shell; 5. back mesh shell; 6. bottom shell; 7. button bracket shell; 8. antenna bracket; 9. USB sealing box; 10. lens; 11. handle buckle; 12. USB cover; 13. round button; 14. bar button; 15. handle; 16. foot pad; 17. silicone ring; 18. pull-rod antenna; 19. speaker; 20. diaphragm; 21. battery. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides Figure 1-4 A Bluetooth speaker supporting a 3.5mm audio socket is shown, comprising a circular button 13, a connection port is provided on the circular button 13, a lens 10 is arranged in the connection port, the lens 10 is fixedly connected to the circular button 13, an upper shell 1 is detachably connected to the bottom of the circular button 13, a silicone pad is detachably connected to the bottom of the upper shell 1, a front shell 2 is detachably connected to the front end of the upper shell 1, a front mesh shell 4 is detachably connected to the front end of the front shell 2, a rear shell 3 is detachably connected to the rear end of the upper shell 1, a rear mesh shell 5 is detachably connected to the rear end of the rear shell 3, a bottom shell 6 is detachably connected to the bottom of the front shell 2, a foot pad 16 is detachably connected to the bottom of the bottom shell 6, a USB sealing box 9 is detachably connected to the top of the bottom shell 6, a USB cover 12 is detachably connected to the rear end of the USB sealing box 9, a battery 21 is detachably connected to the top of the rear shell 3 near the front end, and an opening is provided on the front shell 2. , a speaker 19 is arranged in the opening, and the speaker 19 is detachably connected to the front shell 2, a handle 15 is arranged at the rear end of the rear mesh shell 5, and a handle buckle 11 is detachably connected to the rear end of the handle 15 by the bottom, and the handle buckle 11 passes through the handle 15 and is detachably connected to the rear mesh shell 5, an antenna bracket 8 is detachably connected to the left side of the front mesh shell 4, and a pull-rod antenna 18 is detachably connected to the left side of the antenna bracket 8, a button bracket shell 7 is detachably connected to the right side of the rear shell 3, and a bar button 14 is detachably connected to the right side of the button bracket shell 7, and the upper shell 1, the front shell 2, the rear shell 3, the front mesh shell 4, the rear mesh shell 5, the bottom shell 6, the button bracket shell 7, the antenna bracket 8 and the USB sealing box 9 are all made of ABS, the handle buckle 11 is made of aluminum, and the USB cover 12, the round button 13, the bar button 14, the handle 15, the foot pad 16 and the silicone ring 17 are all made of silicone. This product is connected to mobile phones, PAD tablets, PC computers, MP3 and other digital products to play music through two modes: Bluetooth and 3.5mm audio cable. The working principle of the product is introduced here to explain the Bluetooth mode + 3.5mm AUX_I N line audio module input mode: First, when the Bluetooth speaker is turned on, the 41-pin HP-AUX network output voltage of the Bluetooth main control chip U1 BP1048B2 is set to 0V, and the 3.5mm audio socket is set to audio output mode. The Bluetooth audio signals AUD_L and AUD_R pass through the C29 / C30 coupling capacitors to the U7 / U5 (BCT4157 switch chip composed of the audio module Figure 2The channel is switched to AUD_L / R audio signal output mode internally (as indicated by the gray arrow in the dotted box), and then the power is amplified through the U5 (CS8571 E) amplifier IC to the built-in 3W 4-ohm speaker for sound. In addition, when a wired headset with a 3.5mm plug or an audio cable with a 3.5mm plug is inserted, the voltage of the AUX_DET detection network connected to the Bluetooth IC pin 35 is a low level signal (as indicated by the green arrow line), and the 3.5mm audio module channel is switched to output mode; and at the same time, the voltage of the internal amplifier UART0_TX_MUTE input pin is set to a low level of 0V to mute the internal amplifier; the Bluetooth audio signal is output to the wired headset or output to other external active amplifiers through the 3.5mm audio cable for power amplification. The above is the Bluetooth working mode. The following point 3 will describe the 3.5mm audio line input mode (AUX_I N) in detail. Figure 4 The circuit design shown in the dotted box is that when the Bluetooth speaker is turned on and the button is switched to AUX_I N input mode, when the 3.5mm audio jack detects that an external 3.5mm audio cable is inserted, the Bluetooth main control chip U1 detects that there is an external signal input through the voltage of the AUX_DET detection pin, sets HP_AUX to a high level, and controls the switch to the audio module composed of U7 / U5 (BCT4157 switch chip) Figure 2 The channel is switched to the AUX_L / R audio signal input channel (as shown by the gray arrow in the dotted box); and the voltage of the internal power amplifier UART0_TX_MUTE input pin is set to a high level to enable the internal power amplifier to make sound; without changing the characteristics of the hardware circuit, a 3.5mm audio socket + module circuit is used to simply realize the input / output switching of the audio signal.

[0020] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A Bluetooth speaker supporting a 3.5mm audio jack, characterized in that: The invention comprises a circular button (13), wherein a connection port is provided on the circular button (13), wherein a lens (10) is arranged in the connection port, wherein the lens (10) is fixedly connected to the circular button (13), wherein the bottom of the circular button (13) is detachably connected to an upper shell (1), wherein the bottom of the upper shell (1) is detachably connected to a silicone pad, wherein the front end of the upper shell (1) is detachably connected to a front shell (2), wherein the front end of the front shell (2) is detachably connected to a front mesh shell (4), wherein the rear end of the upper shell (1) is detachably connected to a rear shell (3), wherein the rear end of the rear shell (3) is The device comprises a rear mesh shell (5) which is detachably connected, a bottom shell (6) being detachably connected to the bottom of the front shell (2), a foot pad (16) being detachably connected to the bottom of the bottom shell (6), a USB sealing box (9) being detachably connected to the top of the bottom shell (6), a USB cover (12) being detachably connected to the rear end of the USB sealing box (9), a battery (21) being detachably connected to the top of the rear shell (3) near the front end, an opening being provided on the front shell (2), a speaker (19) being provided in the opening, and the speaker (19) being detachably connected to the front shell (2); The Bluetooth speaker with the 3.5mm audio socket includes a chip U7 and a chip U8. The chip U7 and the chip U8 are BCT4175 chips. The same VCC pins and GND pins on the chip U7 and the chip U8 are electrically connected to each other. The GND pins are electrically connected to each other and connected to the protective ground wire. The VCC pins are electrically connected to each other and connected to the protective ground wire. A capacitor C28475 is provided on the line connecting the VCC pin and the protective ground wire.

2. A Bluetooth speaker supporting a 3.5mm audio jack according to claim 1, characterized in that: A handle (15) is provided at the rear end of the rear mesh shell (5), and a handle buckle (11) is detachably connected to the rear end of the handle (15) near the bottom, and the handle buckle (11) passes through the handle (15) and is detachably connected to the rear mesh shell (5).

3. A Bluetooth speaker supporting a 3.5mm audio jack according to claim 2, characterized in that: The left side of the front mesh shell (4) is detachably connected to an antenna bracket (8), and the left side of the antenna bracket (8) is detachably connected to a telescopic antenna (18).

4. The Bluetooth speaker supporting a 3.5mm audio jack according to claim 3, characterized in that: The right side of the rear shell (3) is detachably connected to a button bracket shell (7), and the right side of the button bracket shell (7) is detachably connected to a bar button (14).

5. The Bluetooth speaker supporting a 3.5mm audio jack according to claim 4, characterized in that: The upper shell (1), the front shell (2), the rear shell (3), the front mesh shell (4), the rear mesh shell (5), the bottom shell (6), the button bracket shell (7), the antenna bracket (8) and the USB sealing box (9) are all made of ABS material.

6. The Bluetooth speaker supporting a 3.5mm audio jack according to claim 2, characterized in that: The handle buckle (11) is made of aluminum.

7. The Bluetooth speaker supporting a 3.5mm audio jack according to claim 4, characterized in that: The USB cover (12), the circular button (13), the bar button (14), the handle (15), the foot pad (16) and the silicone ring (17) are all made of silicone material.

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