CN218550101U

CN218550101U - Mini sound box

Info

Publication number: CN218550101U
Application number: CN202223029676.2U
Authority: CN
Inventors: 彭启明; 辛丕祥; 韩振宇
Original assignee: Jiexi Angelet Electronic Appliances Co ltd
Current assignee: Jiexi Angelet Electronic Appliances Co ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-02-28
Anticipated expiration: 2032-11-14

Abstract

The utility model discloses a mini sound box, including casing and control mainboard, be provided with audio input plug, USB flash disk socket, earphone jack and interior record jack on the casing, this audio input plug, USB flash disk socket, earphone jack and interior record jack respectively with control mainboard signal connection. Adopt the utility model discloses a mini audio amplifier through audio input plug, USB flash disk socket, earphone jack and the interior jack of recording that sets up on the audio amplifier casing, can connect different equipment respectively to realize the different functions of audio amplifier.

Description

Mini sound box

Technical Field

The utility model relates to a device technical field for obtaining required frequency or directional characteristic, concretely relates to mini audio amplifier.

Background

An acoustic enclosure is a device for converting an audio signal into an acoustic signal. The existing sound box is developing towards miniaturization for convenient carrying. However, due to the volume limitation of the mini sound box, the existing mini sound box has low integration level and monotonous functions. Although there are many multi-function enclosures, there is not much correlation between the expanded functionality and the functionality of the enclosure itself. If the prior patent with the publication number of CN209267782U discloses a multifunctional mini wireless Bluetooth sound box, the function of accommodating a mobile phone support and a data line is realized by arranging a wire winding device and a fixed clamping block on a sound box body, and the functions of accommodating the mobile phone support and the data line and the sound box are not greatly related.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model provides a small-size audio amplifier can expand the function of audio amplifier, and concrete technical scheme is as follows:

the utility model provides a mini sound box, in a first realizable mode, includes casing and control mainboard, be provided with audio input plug, USB flash disk socket, earphone jack and interior record jack on the casing, this audio input plug, USB flash disk socket, earphone jack and interior record jack respectively with control mainboard signal connection.

With reference to the first implementable manner, in a second implementable manner, a storage groove is formed in the housing, and the audio input plug is stored in the storage groove and is rotatably connected with the housing.

With reference to the first implementable manner, in a third implementable manner, the audio device further includes an audio conversion plug, and the audio conversion plug is connected with the audio input plug.

With reference to the first implementation manner, in a fourth implementation manner, the portable electronic device further includes a key panel, and the key panel is disposed on an outer surface of the housing and is in signal connection with the control main board.

With reference to the first implementable manner, in a fifth implementable manner, the electronic device further includes an indicator light, and the indicator light is disposed on the outer surface of the housing and is in signal connection with the control motherboard.

In combination with the first implementable manner, in a sixth implementable manner, the portable electronic device further comprises a rechargeable battery, the rechargeable battery is arranged in the shell, and is electrically connected with a charging interface through the charging module, and the charging interface is arranged on the surface of the shell.

Has the beneficial effects that: adopt the utility model discloses a mini audio amplifier through audio input plug, USB flash disk socket, earphone jack and the interior jack of recording that sets up on the audio amplifier casing, can connect different equipment respectively to realize the different functions of audio amplifier.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings used in the embodiments will be briefly described below. The elements or parts are not necessarily drawn to scale in all figures.

Fig. 1 is a schematic structural view of a mini sound box according to an embodiment of the present invention;

FIG. 2 is a side view of the mini-speaker of FIG. 1;

fig. 3 is a schematic circuit diagram of a bluetooth audio module according to an embodiment of the present invention;

fig. 4 is a circuit diagram of a preamplifier according to an embodiment of the present invention;

fig. 5 is a connection circuit diagram of a power amplifier according to an embodiment of the present invention;

fig. 6 is a circuit diagram of a keypad according to an embodiment of the present invention;

fig. 7 is a circuit diagram of a USB interface according to an embodiment of the present invention;

fig. 8 is a circuit diagram of a charging module according to an embodiment of the present invention.

Reference numerals:

the mobile phone comprises a shell 1, an audio input plug 2, a USB flash disk socket 3, an earphone jack 4, an internal recording jack 5, a containing groove 6, a key panel 7 and a charging interface 8.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the mini sound box includes a casing 1 and a control main board, an audio input plug 2, a usb disk jack 3, an earphone jack 4, and an internal recording jack 5 are disposed on the casing 1, and the audio input plug 2, the usb disk jack 3, the earphone jack 4, and the internal recording jack 5 are respectively connected to the control main board through signals.

Specifically, as shown in fig. 1 and fig. 2, the sound box is composed of a casing 1, a control main board and a speaker, wherein the control main board and the speaker are disposed inside the casing 1 and are in signal connection. An audio input plug 2, a USB flash disk socket 3, an earphone jack 4 and an internal recording jack 5 are arranged on the outer surface of the shell 1. Audio input plug 2, USB flash disk socket 3, earphone jack 4 and interior record jack 5 respectively with control mainboard signal connection, the control mainboard passes through audio input plug 2, USB flash disk socket 3, earphone jack 4 and interior record jack 5, can connect different equipment respectively.

For example, a torch, an electric guitar, and other musical instruments requiring sound amplification can be connected through the audio input plug 2. The USB flash disk can be connected through the USB flash disk socket 3, so that audio data in the USB flash disk can be played. The earphone can be connected through the earphone jack 4, and the control mainboard can convert the audio signal into a sound signal through a loudspeaker earphone. The internal recording jack 5 can be connected with terminal equipment such as a mobile phone, and the control mainboard can send the received audio signal to the mobile phone terminal for storage. In this way, a variety of other functions associated with the role of the enclosure itself are expanded.

It should be understood that, in the present embodiment, as shown in fig. 3-8, the control motherboard may be composed of a bluetooth audio module, a power amplifier, and a preamplifier, and the preamplifier is in signal connection with a speaker, the audio input plug 2, the usb disk jack 3, the headphone jack 4, and the internal recording jack 5.

The Bluetooth audio module can receive audio playing equipment such as a mobile phone, an electric piano and an electric guitar, digital audio signals transmitted through Bluetooth are converted into analog audio signals to be transmitted to the preamplifier, and the analog audio signals are processed by the preamplifier and the power amplifier in sequence to drive the loudspeaker to emit corresponding sound signals.

The analog audio signal inputted by the audio input plug 2 can be processed by a preamplifier and a power amplifier to drive a loudspeaker to output a corresponding sound signal. Or the audio signal is transmitted to an internal recording interface or an earphone interface and then transmitted to a mobile phone connected with the internal recording interface or an earphone connected with the earphone interface, so that the audio signal can be recorded through the internal recording function of the mobile phone, or the audio signal is converted into a sound signal through the earphone. Realize the diversified sound source output of audio amplifier.

The specific connection mode of the control mainboard, the audio input plug 2, the usb disk jack 3, the earphone jack 4 and the inner recording jack 5 is as shown in fig. 2, fig. 3 and fig. 4, the bluetooth audio module includes a bluetooth audio chip with a model AC 69669D, an output DACL of the bluetooth audio chip is connected with an input terminal of a preamplifier with a model CPT4809, an output terminal of the preamplifier is connected with an input terminal INN of a power amplifier with a model CS5250, and a connection port J9 of the power amplifier can be connected with a speaker. After analog audio signals output by the Bluetooth audio chip are sequentially processed by the preamplifier and the power amplifier, the loudspeaker can be driven to output corresponding sound signals.

The preamplifier is also connected with an internal recording interface JK3, an earphone interface JK2 and an audio input plug J10. The in-recording interface JK3 may be a 4-segment 3.5mm audio jack. An audio playing device such as an electric guitar can be connected through the audio input plug J10, and the preamplifier can receive an analog audio signal sent by the audio playing device through the audio input plug J10. The received analog audio signal is processed by the preamplifier and the power amplifier and then drives the loudspeaker to output a corresponding sound signal.

Meanwhile, the preamplifier can be respectively connected with the mobile phone and the earphone through the internal recording interface JK3 and the earphone interface JK 2. The preamplifier can send the processed analog audio signal to the connected mobile phone and the connected earphone through the internal recording interface JK3 and the earphone interface JK 2.

The control signal output terminal SD and the control signal output terminal MUTE of the bluetooth audio module may be connected to the control terminal CTRL of the power amplifier and the control terminal SD of the preamplifier, respectively. The output of the power amplifier and the output of the preamplifier can be controlled by the Bluetooth audio module to match different audio output modes. For example, if the power amplifier is controlled to be turned on by the bluetooth audio module, a sound signal can be output through the speaker, and if the power amplifier is controlled to be turned off by the bluetooth audio module, the sound signal can be played through an earphone connected with the earphone interface, or an analog audio signal can be transmitted to the mobile phone for storage.

In this embodiment, optionally, as shown in fig. 2, a receiving groove 6 is provided on the housing 1, and the audio input plug 2 is received in the receiving groove 6 and is rotatably connected to the housing 1.

Specifically, a storage groove 6 is provided on the back surface of the speaker, and the audio input plug 2 can be stored in the storage groove 6, so that the speaker can be carried conveniently. The rear end of the audio input plug 2 is hinged to the case 1 so that the audio input plug 2 can be taken out of the receiving groove 6 by rotating the audio input plug 2 when it is necessary to connect the musical instrument using the audio input plug 2.

In this embodiment, optionally, an audio conversion plug is further included, and the audio conversion plug is connected to the audio input plug 2. Specifically, the audio input plug 2 may be a 3.5mm audio plug, and the 3.5mm audio plug may be connected to a 3.5mm to 6.5mm audio conversion plug, and thus may be used to connect to a musical instrument equipped with a 6.5mm audio jack. When the instrument is configured with a 3.5mm audio jack, the audio conversion plug can be removed and the audio input plug 2 can be directly inserted into the audio jack of the instrument. Therefore, the application range of the mini sound box can be expanded.

In this embodiment, optionally, as shown in fig. 1 and fig. 6, the electronic device further includes a key panel 7, where the key panel 7 is disposed on an outer surface of the housing 1 and is in signal connection with the control main board. The signal input end PB1 of the Bluetooth audio chip can be connected with the key panel 7, and corresponding control signals can be input through the key panel 7 so as to control the loudspeaker box.

In this embodiment, optionally, the electronic device further includes an indicator light, and the indicator light is disposed on an outer surface of the housing 1 and is in signal connection with the control main board. Particularly, the signal output part of the Bluetooth audio chip can be connected with the LED indicating lamp through the LDO, and the signal can be sent through the LED indicating lamp to prompt the working state of the control mainboard.

In this embodiment, optionally, as shown in fig. 8, a rechargeable battery is further included, the rechargeable battery is disposed in the housing 1, and is electrically connected to a charging interface 8 through a charging module, and the charging interface 8 is disposed on the surface of the housing 1. Particularly, the inside battery that still is provided with of audio amplifier, gives the control mainboard power supply through the battery. The battery is a rechargeable battery and can be connected with the T-shaped charging interface 8 through the charging module for charging. In this embodiment, the charging module includes a charging control chip U11, an input end of the charging control chip is connected to the T-shaped charging interface 8, and an output end of the charging control chip is connected to the battery.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a mini sound box, includes casing and control mainboard, its characterized in that, be provided with audio input plug, USB flash disk socket, earphone jack and interior record jack on the casing, this audio input plug, USB flash disk socket, earphone jack and interior record jack respectively with control mainboard signal connection.

2. The mini speaker of claim 1, wherein the housing has a receiving slot, and the audio input plug is received in the receiving slot and rotatably connected to the housing.

3. The mini speaker of claim 1, further comprising an audio adapter plug coupled to the audio input plug.

4. The mini speaker of claim 1, further comprising a key panel disposed on an outer surface of the housing and in signal connection with the control main board.

5. The mini sound box of claim 1, further comprising an indicator light disposed on an outer surface of the housing and in signal connection with the control main board.

6. The mini speaker of claim 1, further comprising a rechargeable battery disposed inside the housing and electrically connected to a charging interface via a charging module, wherein the charging interface is disposed on the surface of the housing.