Bluetooth talkback equipment

Abstract

The utility model relates to the technical field of talkback adapters, PTT and earphones, and discloses a Bluetooth talkback device, which comprises an adapter, a wireless PTT and an earphone, the adapter is inserted on a K head of an interphone through double pins, a first audio Bluetooth module and a second BLE Bluetooth module are integrated in the adapter, and the first audio Bluetooth module and the second BLE Bluetooth module are connected with the wireless PTT. The first audio Bluetooth module is connected with the earphone to provide a call function, and the first BLE Bluetooth module is connected with the wireless PTT to realize a PTT signal transmission function. According to the utility model, the adapter and the earphone are connected through Bluetooth, the constraint of a wired earphone is eliminated, the wireless PTT is added, the talkback is more convenient and flexible in use, the key and the plug interface thereof are reserved at the earphone end, the functions of startup and shutdown, pairing, PTT and volume control can be realized, and the practicability is stronger.

Description

Technical Field

[0001] The utility model relates to the technical fields of an intercom adapter, PTT and earphones, in particular to a Bluetooth intercom equipment. Background Art

[0002] Walkie-talkies are widely used in people's daily lives. They can be used for verbal communication in a small range through channels. They are usually used in security, cycling, tourism and other situations where groups need to communicate at any time and need to work separately. PTT is a button used for intercoms, which can quickly conduct "one-to-one" or "one-to-many" calls.

[0003] However, the adapter products of the commonly used walkie-talkie devices currently only realize the wireless connection between the adapter and the headset, but the PTT is still integrated on the headset. Some product adapters have only one Bluetooth module that needs to be connected to the Bluetooth headset and the wireless PTT at the same time, and the connection quality and stability are poor.

[0004] Therefore a new bluetooth intercom equipment is proposed based on the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a Bluetooth intercom equipment.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a Bluetooth intercom equipment, including an adapter, a wireless PTT and a headset, the adapter is inserted into the K head of the intercom through a double pin, the adapter is internally integrated with a first audio Bluetooth module and a second BLE Bluetooth module, the first audio Bluetooth module is connected to the headset to provide a call function, the first BLE Bluetooth module is connected to the wireless PTT to realize the PTT signal transmission function, and the first audio Bluetooth module and the first BLE Bluetooth module of the adapter can be automatically connected to the wireless PTT and the Bluetooth of the headset after powering on;

[0007] A fixing component is arranged on the surface of the adapter, and the fixing component is used to fix the wireless PTT when not in use.

[0008] As a further description of the above technical solution:

[0009] The adapter also includes a first audio power amplifier and a solid-state relay. The first audio power amplifier is used to convert the differential signal output by Bluetooth into a single-ended signal and send it to the microphone of the intercom. The solid-state relay is used to trigger the PTT in the intercom.

[0010] As a further description of the above technical solution:

[0011] The wireless PTT is internally provided with a second BLE Bluetooth module, which is connected to the first BLE Bluetooth module and is used to transmit the collected key signals to the adapter.

[0012] As a further description of the above technical solution:

[0013] The earphone is internally provided with a second audio Bluetooth module and a second audio power amplifier, the second audio Bluetooth module is connected to the first audio Bluetooth module, and the second audio power amplifier is used to convert the differential signal output by Bluetooth into a single-ended signal to drive the speaker in the earphone.

[0014] As a further description of the above technical solution:

[0015] The earphone surface is provided with buttons and plug-in interfaces, which can realize power on / off, pairing, PTT and volume control functions.

[0016] As a further description of the above technical solution:

[0017] A shell is provided on the surface of the adapter, and the fixing component is installed on the surface of the shell. The fixing component includes a fixing seat, a first plug-in block is fixed to the inner wall of one end of the fixing seat, a second plug-in block is provided at one end of the fixing seat symmetrical to the first plug-in block, a cavity is opened inside the side wall of the fixing seat close to the second plug-in block, a spring is fixed inside the cavity, a plug-in rod is fixed at one end of the spring, and one end of the plug-in rod extends to the outside of the cavity and is fixed to the second plug-in block.

[0018] As a further description of the above technical solution:

[0019] The surface of the cavity is provided with a strip-shaped opening, a push block is arranged at the strip-shaped opening, the push block is fixedly connected to the plug rod, and the housing of the wireless PTT is provided with two jacks, which are matched with the first plug block and the second plug block respectively.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the adapter and the headset are connected via Bluetooth, getting rid of the constraints of wired headsets, and adding wireless PTT, which is more convenient and flexible when using intercom. At the same time, buttons and plug-in interfaces are reserved on the headset end to realize power on / off, pairing, PTT and volume control functions, which has strong practicality.

[0022] 2. In the utility model, by setting the fixing component, the wireless PTT and the adapter can be fixed together when not in use, so as to avoid the loss of the smaller wireless PTT. Compared with the magnetic fixing method, the fixing is more stable and less likely to fall off. Compared with the snap-on fixing method, it is more convenient to disassemble and take out. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A first circuit diagram of an adapter in a Bluetooth intercom device proposed by the utility model;

[0024] Figure 2 A second circuit diagram of an adapter in a Bluetooth intercom device proposed by the utility model;

[0025] Figure 3 A circuit diagram of a wireless PTT in a Bluetooth intercom device proposed by the utility model;

[0026] Figure 4 This is a circuit diagram of a headset in a Bluetooth intercom device proposed by the utility model;

[0027] Figure 5 This is an appearance diagram of an adapter in a Bluetooth intercom device proposed by the utility model;

[0028] Figure 6 This is an internal structural diagram of a fixed component in a Bluetooth intercom device proposed by the utility model.

[0029] Legend:

[0030] 1. Shell; 2. Fixed seat; 3. First plug-in block; 4. Push block; 5. Strip opening; 6. Second plug-in block; 7. Insertion rod; 8. Spring. DETAILED DESCRIPTION

[0031] 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.

[0032] Embodiment 1:

[0033] like Figure 1-Figure 4 As shown, a Bluetooth intercom equipment is characterized in that: it includes an adapter, a wireless PTT and a headset, the adapter is inserted into the K head of the intercom through a double pin, the adapter is integrated with a first audio Bluetooth module and a second BLE Bluetooth module, the first audio Bluetooth module is connected to the headset to provide a call function, the first BLE Bluetooth module is connected to the wireless PTT to realize the PTT signal transmission function, and the first audio Bluetooth module and the first BLE Bluetooth module of the adapter can be automatically connected to the wireless PTT and the Bluetooth of the headset after powering on;

[0034] like Figure 1As shown, U4 (BTM340) is the first audio Bluetooth module integrated inside the adapter, which is connected to the receiving module in the headset as a transmitting module, and sends the sound of the intercom to the headset through the microphone, and also sends the sound received from the headset to the intercom. U5 (TPA6138) is the first audio power amplifier in the adapter, which is responsible for converting the differential signal output by Bluetooth into a single-ended signal and sending it to the microphone of the intercom.

[0035] like Figure 2 As shown, U2 is the first BLE Bluetooth module integrated in the adapter, which is set to connect the host to the slave on the wireless PTT and is responsible for transmitting the PTT button signal on the slave to the intercom. ISO1 is a solid-state relay integrated in the adapter, which is used to trigger the PTT of the intercom.

[0036] like Figure 3 As shown, U2 is the second BLE Bluetooth module inside the wireless PTT, which is set as a slave to connect to the Bluetooth host on the adapter and is responsible for transmitting the collected key signal to the host on the adapter to determine whether the PTT is pressed and trigger the PTT of the walkie-talkie.

[0037] like Figure 4 As shown, U3 (BTM340) is the second audio Bluetooth module inside the headset, which is connected to the transmitter module in the adapter as a receiving module. The sound of the microphone on the headset is sent to the adapter through the microphone, and the sound of the intercom transmitted from the adapter is also received. U4 (TPA6138) is the second audio power amplifier inside the headset, which is responsible for converting the differential signal output by Bluetooth into a single-ended signal to drive the speaker in the headset.

[0038] Embodiment 2:

[0039] The addition of wireless PTT makes it easier to press a button during intercom, making it more convenient to use. However, due to the wireless nature of wireless PTT and its small size, it is easy to be lost when not in use. Therefore, further improvements are made:

[0040] like Figure 5-Figure 6As shown, the surface of the adapter is provided with a fixing component, and the fixing component is used to fix the wireless PTT when not in use. The surface of the adapter is provided with a shell 1, and the fixing component is installed on the surface of the shell 1. The fixing component includes a fixing seat 2, and a first plug 3 is fixed to the inner wall of one end of the fixing seat 2, and a second plug 6 is provided at the end of the fixing seat 2 symmetrical to the first plug 3. A cavity is provided inside the side wall of the fixing seat 2 close to the second plug 6, and a spring 8 is fixed inside the cavity. A plug rod 7 is fixed at one end of the spring 8, and one end of the plug rod 7 extends to the outside of the cavity and is fixed to the second plug 6. A strip opening 5 is provided on the surface of the cavity, and a push block 4 is provided at the strip opening 5. The push block 4 is fixedly connected to the plug rod 7. Two jacks are provided on the shell of the wireless PTT, and the two jacks match the first plug 3 and the second plug 6 respectively.

[0041] When not in use, the push block 4 can be pushed, and the spring 8 is compressed under the action of external force, so that the plug rod 7 and the second plug block 6 move, increasing the distance between the first plug block 3 and the second plug block 6, and then the wireless PTT is put in, so that the jack at one end of the wireless PTT is inserted into the first plug block 3, and then the push block 4 is released. Under the action of the restoring force of the spring 8, the second plug block 6 is inserted into the other jack, and the wireless PTT is stably fixed on the housing 1 of the adapter to prevent it from being lost.

[0042] 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 intercom equipment, characterized in that: It includes an adapter, a wireless PTT and a headset. The adapter is plugged into the K head of the intercom through a double pin. The adapter is internally integrated with a first audio Bluetooth module and a first BLE Bluetooth module. The first audio Bluetooth module is connected to the headset to provide a call function. The first BLE Bluetooth module is connected to the wireless PTT to realize the PTT signal transmission function. The first audio Bluetooth module and the first BLE Bluetooth module of the adapter can be automatically connected to the wireless PTT and the Bluetooth of the headset after powering on. A fixing component is arranged on the surface of the adapter, and the fixing component is used to fix the wireless PTT when not in use.

2. A Bluetooth intercom equipment according to claim 1, characterized in that: The adapter also includes a first audio power amplifier and a solid-state relay. The first audio power amplifier is used to convert the differential signal output by Bluetooth into a single-ended signal and send it to the microphone of the intercom. The solid-state relay is used to trigger the PTT in the intercom.

3. The Bluetooth intercom equipment according to claim 1, characterized in that: The wireless PTT is internally provided with a second BLE Bluetooth module, which is connected to the first BLE Bluetooth module and is used to transmit the collected key signals to the adapter.

4. The Bluetooth intercom equipment according to claim 1, characterized in that: The earphone is internally provided with a second audio Bluetooth module and a second audio power amplifier, the second audio Bluetooth module is connected to the first audio Bluetooth module, and the second audio power amplifier is used to convert the differential signal output by Bluetooth into a single-ended signal to drive the speaker in the earphone.

5. The Bluetooth intercom equipment according to claim 1, characterized in that: The earphone surface is provided with buttons and plug-in interfaces.

6. The Bluetooth intercom equipment according to claim 1, characterized in that: The surface of the adapter is provided with a shell (1), and the fixing component is installed on the surface of the shell (1). The fixing component includes a fixing seat (2), a first plug-in block (3) is fixed to the inner wall of one end of the fixing seat (2), a second plug-in block (6) is provided at one end of the fixing seat (2) which is symmetrical to the first plug-in block (3), a cavity is provided inside the side wall of the fixing seat (2) close to the second plug-in block (6), a spring (8) is fixed inside the cavity, an insert rod (7) is fixed at one end of the spring (8), and one end of the insert rod (7) extends to the outside of the cavity and is fixed to the second plug-in block (6).

7. A Bluetooth intercom equipment according to claim 6, characterized in that: The surface of the cavity is provided with a strip-shaped opening (5), a push block (4) is arranged at the strip-shaped opening (5), the push block (4) is fixedly connected to the insertion rod (7), and two plug holes are provided on the housing of the wireless PTT, the two plug holes are matched with the first plug block (3) and the second plug block (6) respectively.

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