CN201657316U - External wireless transmitting and receiving device of sound box - Google Patents

Abstract

The utility model relates to a wireless device technical field especially relates to external wireless transmitting and receiving device of audio amplifier, and it is including RF wireless transmitter and the RF wireless receiver with wireless mode accordant connection, RF wireless transmitter is external transmitter, and RF wireless receiver is external receiver, and RF wireless receiver is provided with the audio output interface who matches with the audio input interface of audio amplifier, and RF wireless receiver still is provided with the power supply unit who provides working power supply for RF wireless receiver. External wireless transmitting and receiving device of audio amplifier has stronger commonality, conveniently is applied to various audio amplifiers.

Description

Speaker's external wireless transmitting and receiving device

Technical field:

The utility model relates to the technical field of wireless devices, in particular to an external wireless transmitting and receiving device for a sound box.

Background technique:

With the development of science and technology, wireless communication technology has been widely used in people's lives, such as RF radio frequency technology, wireless network technology, wireless monitoring technology, etc., all play an important role in various fields of life. In the existing technology, the wireless transmitter and the wireless receiver are extremely important components in the equipment using the wireless communication technology. When working, the wireless transmitter transmits the signal through the wireless form. After the wireless receiver receives the signal, the device Realize related functional operations.

At present, RF radio frequency technology has been gradually applied to speaker products, which has greatly improved the performance of speakers. The Chinese utility model patent with the patent number "ZL 200820176467.1" discloses a rechargeable 2.4G wireless speaker device, which includes a 2.4GHz wireless transmitting circuit, a 2.4GHz wireless receiving circuit, a sound source circuit and a speaker, and the 2.4GHz wireless transmitting circuit passes through The wireless is connected with the 2.4GHz wireless receiving circuit, and the 2.4GHz wireless receiving circuit is built in the speaker. The above-mentioned sound box includes a wireless transmitting and receiving device composed of a wireless transmitter and a wireless receiver, wherein the wireless transmitter is built in the sound box. The versatility of the wireless transmitting and receiving device adopting this mode is greatly limited, and it is difficult to be applied to other sound boxes, especially to sound boxes that do not use RF radio frequency technology.

Utility model content:

The purpose of the utility model is to provide an external wireless transmitting and receiving device for a sound box, which has strong versatility and is conveniently applied to various sound boxes.

In order to achieve the above object, the utility model is realized through the following technical solutions: the external wireless transmitting and receiving device of the sound box, which includes an RF wireless transmitter and an RF wireless receiver that are matched and connected in a wireless manner, and the RF wireless transmitter is an external The RF wireless receiver is an external receiver, the RF wireless receiver is provided with an audio output interface matching the audio input interface of the speaker, and the RF wireless receiver is also provided with a power supply device that provides working power for the RF wireless receiver .

The power supply device is an external power input device.

The external power input device is a power input interface.

The external power input device is a DC power plug-in cable.

The RF wireless receiver is provided with a working indicator light.

The RF wireless transmitter has a built-in secondary lithium ion battery, and the RF wireless transmitter is provided with a charging interface for charging the secondary lithium ion battery.

The RF wireless transmitter is provided with an SD card interface.

The RF wireless transmitter is provided with a transmitter audio input interface.

The RF wireless transmitter is provided with function keys.

Both the RF wireless transmitter and the RF wireless receiver are provided with a frequency switch and a power switch.

The beneficial effects of the utility model are: the external wireless transmitting and receiving device of the sound box described in the utility model, its RF wireless transmitter is an external transmitter, the RF wireless receiver is an external receiver, and the RF wireless receiver is provided with a The audio input interface of the sound box matches the audio output interface, and the RF wireless receiver is also provided with a power supply device that provides working power for the RF wireless receiver; the wireless transmitting and receiving device adopting the above-mentioned mode, the RF wireless transmitter and the RF wireless receiver are both External type, the power supply device of the RF wireless receiver can be a structure with its own battery or a structure that takes power directly from the speaker. The audio output interface of the RF wireless receiver can output audio signals to the audio input interface of the speaker. When working, use a conventional audio signal cable to connect the audio output interface of the RF wireless receiver and the audio input interface of the speaker, the RF wireless transmitter transmits wireless audio signals, the RF wireless receiver receives the wireless audio signals, and the wireless audio signals pass through the audio The output interface is input to the audio input interface of the speaker through the audio signal line, and finally the corresponding audio is played by the speaker. Because the speakers in the prior art all have audio input interfaces, the playback function can be realized only by connecting the RF wireless receiver to the speaker. Therefore, this external wireless transmitting and receiving device can be applied to various speakers, and it has relatively Strong versatility, easy to apply to various speakers.

Description of drawings:

Fig. 1 is the three-dimensional structure schematic diagram of the utility model RF wireless transmitter;

Fig. 2 is another stereoscopic structure schematic diagram of the utility model RF wireless transmitter;

Fig. 3 is the three-dimensional structure schematic diagram of the utility model RF wireless receiver;

FIG. 4 is a schematic structural diagram of another viewing angle of the RF wireless receiver of the present invention.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1 to 4, the external wireless transmitting and receiving device of the sound box includes an RF wireless transmitter 1 and an RF wireless receiver 2 that are matched and connected wirelessly, and the RF wireless transmitter 1 is an external transmitter. The RF wireless receiver 2 is an external receiver, the RF wireless receiver 2 is provided with an audio output interface 20 matching the audio input interface of the sound box, and the RF wireless receiver 2 is also provided with a working power supply for the RF wireless receiver 2 power supply unit. Using the wireless transmitting and receiving device of the above mode, the RF wireless transmitter 1 and the RF wireless receiver 2 are external, and the audio output interface 20 of the RF wireless receiver 2 can output audio signals to the audio input interface of the speaker. During work, use the conventional audio signal line to connect the audio output interface 20 of the RF wireless receiver 2 and the audio input interface that the sound box carries, the RF wireless transmitter 1 transmits a wireless audio signal, and the RF wireless receiver 2 receives the wireless audio signal, wirelessly The audio signal is input into the audio input interface of the speaker through the audio output interface 20 through the audio signal line, and finally the corresponding audio is played by the speaker. Since the speakers in the prior art all have audio input interfaces, the playback function can be realized only by connecting the RF wireless receiver 2 to the speaker. Therefore, this external wireless transmitting and receiving device can be applied to various speakers. Strong versatility, easy to apply to various speakers.

Wherein, for the external wireless transmitting and receiving device of the sound box described in the utility model, the power supply device of its RF wireless receiver 2 can be a power supply structure with its own battery, or it can be an external power input device structure that directly takes power from the sound box. . An external power input device refers to a device that is connected to the outside and provides working power from the outside. In this embodiment, it refers to connecting to a speaker and taking power directly from the speaker; as one of the preferred implementations, the external power input device is a power input interface 21. The power input interface 21 can be connected to the DC power supply interface of the speaker with the power cord, and the power can be directly obtained from the speaker for the RF wireless receiver 2 to work, which improves the convenience of use. As another preferred embodiment, the external power supply input device is a DC power supply plug-in cable, one end of the DC power supply plug-in cable is connected to the internal circuit board of the RF wireless receiver 2, and the other end (ie the plug end) of the DC power supply plug-in cable is used to connect to the speaker itself. The provided DC power supply interface can directly take power from the speaker for the RF wireless receiver 2 to work, which also plays a role in improving the convenience of use.

As a preferred embodiment, the RF wireless receiver 2 is provided with a working indicator light 22. When the RF wireless receiver 2 is powered on, the working indicator light 22 lights up, which plays a role in prompting the RF wireless receiver 2 to be in a normal working state. .

As a preferred embodiment, the external wireless transmitting and receiving device of the sound box described in the utility model has a built-in secondary lithium-ion battery in its RF wireless transmitter 1, and the RF wireless transmitter 1 is provided with a charging device for charging the secondary lithium-ion battery. interface12. The secondary lithium-ion battery provides operating power for the RF wireless transmitter 1; in the present embodiment, the charging interface 12 of DC 5V is used. When using the charging interface 12, in addition to charging the secondary lithium-ion battery, it also provides RF wireless transmission Device 1 provides working power.

As a preferred embodiment, the RF wireless transmitter 1 is provided with an SD card interface 13. After the SD card is inserted, the RF wireless transmitter 1 can transmit the audio data of the SD card in the form of wireless audio signals, so that the sound box can play the SD card audio data.

As another preferred embodiment, the RF wireless transmitter 1 is provided with a transmitter audio input interface 10, and the transmitter audio input interface 10 can be connected to peripheral equipment such as a computer. After connecting the peripheral equipment, the RF wireless transmitter 1 can connect the peripheral The audio data of the device is transmitted in the form of wireless audio signal, so that the speaker can play the audio data of the peripheral device.

As another preferred embodiment, the RF wireless transmitter 1 can be provided with an SD card interface 13 and a transmitter audio input interface 10 at the same time, so as to provide more optional audio data sources and enrich the use functions of the sound box.

As a preferred embodiment, the RF wireless transmitter 1 is provided with function buttons 11, and the function buttons 11 include operation buttons such as pause, play, previous song (volume down when long pressed), next song (volume up when long pressed) , it is convenient to directly operate the RF wireless transmitter 1 to control the playback mode of the speaker.

As a preferred embodiment, both the RF wireless transmitter 1 and the RF wireless receiver 2 are provided with a frequency switch and a power switch 3 . The frequency switching and power switch 3 is provided with three gears, the first gear is OFF gear, and the working power is turned off when transferred to this gear; the second and third gears are two working frequency range gears, which are also ON gear, that is, when it is adjusted to this gear, the working power is turned on and the working frequency is selected at the same time. The RF wireless transmitter 1 can be provided with multiple transmission frequencies, and the RF wireless receiver 2 has multiple corresponding reception frequencies. The transmission frequency of the RF wireless transmitter 1 and the corresponding frequency of the RF wireless receiver 2 can be selected by switching the operating frequency and the power switch 3 The receiving frequency avoids mutual interference between multiple sets of external wireless transmitting and receiving devices of the sound box described in the utility model. The external wireless transmitting and receiving device of the sound box described in the utility model can also adopt the mode of matching a plurality of RF wireless receivers 2 with one RF wireless transmitter 1 to realize a one-to-many working mode in which multiple sound boxes play the same audio data at the same time , has strong practicability.

The above is only a preferred embodiment of the utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope are all included in the utility model patent application scope .

Claims (10)

1. the external wireless sending and receiving apparatus of audio amplifier, it includes RF wireless launcher (1) and the RF wireless receiver (2) that connects with the wireless mode coupling, it is characterized in that: described RF wireless launcher (1) is the external reflector, RF wireless receiver (2) is the external receiver, RF wireless receiver (2) is provided with the audio output interface (20) with the audio input interface of audio amplifier coupling, and RF wireless receiver (2) also is provided with the supply unit that promising RF wireless receiver (2) provides working power.

2. the external wireless sending and receiving apparatus of audio amplifier according to claim 1, it is characterized in that: described supply unit is a circumscribed power supply input unit.

3. the external wireless sending and receiving apparatus of audio amplifier according to claim 2, it is characterized in that: described circumscribed power supply input unit is power input interface (21).

4. the external wireless sending and receiving apparatus of audio amplifier according to claim 2, it is characterized in that: described circumscribed power supply input unit is a DC electric power connecting line.

5. the external wireless sending and receiving apparatus of audio amplifier according to claim 1, it is characterized in that: described RF wireless receiver (2) is provided with relay indicating light (22).

6. the external wireless sending and receiving apparatus of audio amplifier according to claim 1, it is characterized in that: described RF wireless launcher (1) is built-in with secondary lithium battery, and RF wireless launcher (1) is provided with the charging inlet (12) that is used for to the secondary lithium battery charging.

7. the external wireless sending and receiving apparatus of audio amplifier according to claim 1, it is characterized in that: described RF wireless launcher (1) is provided with SD card (13).

8. the external wireless sending and receiving apparatus of audio amplifier according to claim 1, it is characterized in that: described RF wireless launcher (1) is provided with reflector audio input interface (10).

9. the external wireless sending and receiving apparatus of audio amplifier according to claim 1, it is characterized in that: described RF wireless launcher (1) is provided with function button (11).

10. according to the external wireless sending and receiving apparatus of each described audio amplifier of claim 1 to 9, it is characterized in that: described RF wireless launcher (1) and RF wireless receiver (2) are provided with frequency and switch and mains switch (3).

Images