CN220823257U

CN220823257U - Handle type telephone transmitter and receiver

Info

Publication number: CN220823257U
Application number: CN202322476618.2U
Authority: CN
Inventors: 倪刚; 廖启斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-04-19
Anticipated expiration: 2033-09-12

Abstract

The application relates to a handle-type transmitter-receiver, which comprises a power supply, a handle-type shell, an audio power amplifier circuit arranged in the handle-type shell, a loudspeaker arranged in the handle-type shell, and a function conversion circuit used for converting between sound amplifying and conventional functions, wherein an audio signal from a radio station is transmitted to the loudspeaker or the audio power amplifier circuit through the function conversion circuit, and the audio power amplifier circuit is electrically connected with the loudspeaker. When the audio power amplifier circuit amplifies the power of the audio signal, the audio signal is transmitted to the loudspeaker through the function conversion circuit, so that the volume played by the loudspeaker is increased, a user can use both hands to operate the audio power amplifier while listening to the audio power amplifier, and the operation convenience and efficiency are greatly improved.

Description

Handle type telephone transmitter and receiver

Technical Field

The application relates to the technical field of radio equipment, in particular to a handle type transmitter-receiver.

Background

The handle type transmitter-receiver is a device matched with radio station for completing sound-electricity conversion when receiving and transmitting speech, and its main structure is formed from PTT key, receiver and transmitter.

Because the handle type transmitter and receiver in the prior art has smaller sound, when in use, an operator needs to hold the transmitter and receiver by one hand to make the transmitter and receiver close to the ear to listen to the voice of the other party, and under the condition of needing long-time recording, the operator can only use the other hand to record as one hand is occupied, and if other operations are needed, the operation cannot be performed, thus bringing inconvenience to the operator; in addition, when in duty, if the environmental noise is loud, the operator is hard to hear the call of the other party at any time.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a novel handle type headset, which can realize that the user can listen to the opposite voice without holding the headset, liberate hands of an operator and improve the operation efficiency.

The utility model provides a handle type transmitter-receiver, which comprises a power supply, a handle type shell, an audio power amplifier circuit arranged in the handle type shell, a loudspeaker arranged in the handle type shell, and a function conversion circuit used for converting between sound amplifying and transmitting functions, wherein an audio signal from a radio station is transmitted to the loudspeaker or the audio power amplifier circuit through the function conversion circuit, and the audio power amplifier circuit is electrically connected with the loudspeaker.

The function conversion circuit comprises a sound amplifying function loop, a transmitting and receiving function circuit and a change-over switch, wherein the input end of the loudspeaker is connected with the change-over switch, and the change-over switch is respectively connected with the sound amplifying function loop and the transmitting and receiving function circuit in different states.

The amplifying function loop comprises a third resistor arranged on a circuit between the change-over switch and the audio signal input end of the radio station and a grounding circuit of the output end of the loudspeaker. The third resistor is used for preventing signals from being reflected back to the input end, and the purpose that audio signals can be transmitted to the loudspeaker is achieved.

The transmitting and receiving function circuit comprises an impedance matcher arranged on a circuit between the input end of the audio power amplifier circuit and the input end of the radio station audio signal, a circuit for connecting the audio power amplifier circuit with a change-over switch and a circuit for connecting the output end of the loudspeaker with the audio power amplifier circuit.

The impedance matcher includes a first resistor and a first capacitor connected in series.

The change-over switch comprises a magnetic latching relay, a sound amplifying switch and a transmitting and receiving switch which are connected in parallel on a circuit of the magnetic latching relay and a ground wire.

The power supply is a built-in storage battery, the handle-type headset further comprises an input end of a charging protection circuit which is arranged in the handle-type shell and is electrically connected with the charging port, and an output end of the charging protection circuit is respectively connected with the magnetic latching relay, the ground wire, the audio power amplifier circuit and the charging end of the storage battery. The storage battery is preferably a lithium battery because of its small size and large storage capacity, and can be used for a long period of time without frequent charging.

The handle type headset further comprises a single-key switch circuit which is arranged in the handle type shell, wherein the input end of the single-key switch circuit is electrically connected with one output end of the charging protection circuit, the output end of the single-key switch circuit is electrically connected with the input end of the audio power amplifier circuit, and the single-key switch circuit is further connected with a power switch.

And the audio power amplifier circuit is also externally connected with a PTT key, and the PTT key and the second resistor are connected in parallel with the audio power amplifier circuit and the bottom line.

The handle type transmitter-receiver provided by the embodiment of the application adopts the built-in loudspeaker, realizes the sound amplifying and transmitting function conversion of the loudspeaker through the function conversion circuit and the audio power amplifier circuit, and when the sound amplifying function is used, an operator can put the transmitter-receiver aside and free hands for other operations, thereby improving the convenience of use.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic block diagram of a handle-type handset according to an embodiment of the application;

fig. 2 is a schematic diagram of operation of the handle-type handset according to the embodiment of the application.

Detailed Description

In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of exemplary embodiments of the present application is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

In the process of realizing the application, the inventor finds that the handle type transmitter receiver which is matched with the radio station for use and is widely applied can clearly listen to the voice of the other party only by holding the transmitter receiver close to the ear of the operator when in use, thus occupying one hand of the operator and being very inconvenient to use.

Therefore, the inventors have studied and devised a handle-type microphone having both a transmitting/receiving function and a voice amplifying/hand sliding function.

The handle-type cradle shown in fig. 1 and 2 is one of the power supplies of the embodiment, and includes a power supply 1, a handle-type housing, an audio power amplifier circuit IC3 built in the handle-type housing, a speaker 2 built in the handle-type housing, and a function conversion circuit for converting between a sound amplifying and a transmitting/receiving function.

The function conversion circuit comprises a sound amplifying function loop, a transmitting and receiving function circuit and a change-over switch J, wherein the input end of the loudspeaker 2 is connected with the change-over switch, and the change-over switch is respectively connected with the sound amplifying function loop and the transmitting and receiving function circuit in different states. In one embodiment, as shown in fig. 2, the transfer switch includes a magnetic latching relay J and two transfer switch keys JK1 and JK2, wherein two coils of the magnetic latching relay J are respectively connected with a sound amplifying switch K2 and a sound transmitting and receiving switch K1 in series, and in the power-on state, the sound amplifying switch K2 is pressed down, the magnetic latching relay J generates magnetic force to drive the transfer switch keys JK1 and JK2 to move rightward (in the figure), so that a sound amplifying function loop is turned on; pressing the transmitting and receiving key K1, the magnetic latching relay J generates a reverse magnetic field to drive the switching keys JK1 and JK2 to move leftwards (in the figure), so that the transmitting and receiving function circuit is connected.

The transmit-receive function circuit comprises a third resistor R3 arranged on a circuit between two switch keys JK1 and JK2 of the switch and the audio signal input end of the radio station, and a grounding circuit of the output end of the loudspeaker 2. The third resistor R3 is used for preventing the signal from being reflected back to the input terminal, so as to achieve the purpose that the audio signal can be transmitted to the speaker 2. When the transmitting/receiving switch K1 is pressed, the magnetic latching relay J generates magnetic force to drive the switching keys JK1 and JK2 to move leftwards (in the figure), so that the sound amplifying function loop is turned on, the audio signal from the radio station is directly transmitted to the loudspeaker 2 through the loop formed by the third resistor R3, the switching key JK2, the loudspeaker 2 and the switching key K1 to make the loudspeaker sound, at this time, the power is about 10mW, the volume generated by the loudspeaker is smaller, and the handle type transmitter-receiver in the embodiment can be used as the handle type transmitter-receiver in the prior art.

The sound amplifying function loop comprises a first resistor R1 and a first capacitor C1 which are connected in series on a circuit between the input end of the audio power amplifier circuit IC3 and the audio signal input end of the radio station; one end of the second capacitor C2 is connected to a circuit between the first capacitor C1 and the input end of the audio power amplifier circuit IC3, and the other end of the second capacitor C2 is grounded; the loudspeaker 2 also comprises a circuit which is communicated with the audio power amplifier circuit IC3 and the loudspeaker. The voice-frequency power amplifier has the advantages that the voice-frequency power amplifier is characterized in that the voice-frequency power amplifier is pressed down to generate magnetic force, the magnetic latching relay J drives the conversion switch keys JK1 and JK2 to move rightwards (in the figure), the voice-frequency power amplifier circuit IC3 is fed with voice-frequency signals from a radio station through the first resistor R1 and the first capacitor C1, the voice-frequency power amplifier circuit IC3 amplifies the voice-frequency signals and converts the voice-frequency signals into balanced voice-frequency driving signals, the balanced voice-frequency driving signals are output to the loudspeaker 2, at the moment, the voice-frequency power can reach 0.6w, loud sound can be generated after the voice-frequency power is transmitted to the loudspeaker 2, an operator can operate the voice-frequency power amplifier by listening aside, two hands are liberated, and the operation convenience is improved. When the noise of the surrounding environment is large, the earphone can be picked up to be close to the ear to listen in the sound amplifying mode, and the influence of interference is reduced. In the embodiment of the present application, the audio power amplifier IC3 adopts a mono power amplifier circuit with the model of TDA2822M, and other technicians in the field may also adopt any audio power amplifier circuit with the same function and interface.

In one embodiment, the power source is a built-in storage battery, and the type of the storage battery is not limited, and can be any one of nickel-cadmium battery, nickel-hydrogen battery, lithium ion battery, lithium polymer battery and lead-acid battery, and the most preferred battery in the current technical condition is lithium battery. The handle type headset further comprises a charging protection circuit IC2 which is arranged in the handle type shell, the input end of the charging protection circuit IC2 is electrically connected with a charging port, the charging port adopts a type-C charging port, and the output end of the charging protection circuit IC2 is respectively connected with the magnetic latching relay J, the ground wire, the audio power amplifier circuit IC3 and the charging end of the storage battery. In the embodiment of the present application, the charging protection circuit IC2 is a charging protection circuit of type TP4056, and any charging protection circuit having the same function and interface may be used by other persons skilled in the art.

In one embodiment, the handle-type headset further includes a single-key switch circuit IC1 disposed in the handle-type housing, wherein an input end of the single-key switch circuit IC1 is electrically connected with one of the output ends of the charging protection circuit IC2, an output end of the single-key switch circuit IC1 is electrically connected with an input end of the audio power amplifier circuit IC3 and an input end of the magnetic latching relay J, and a power switch K1 is further connected to the single-key switch circuit IC 1. When the power switch K1 is pressed down, the single-key switch circuit IC1 is triggered to be conducted, electricity sent by the storage battery through the charging protection circuit is transmitted to the audio power amplifier module IC3 and the magnetic latching relay J, the handle type transmitter and receiver are in a working state, and when the operation is finished, the power switch K1 is pressed down again, the single-key switch circuit IC1 is cut off, power supply is stopped, and the power of the storage battery can be saved. In the embodiment of the application, the single-key switch circuit IC1 is a miniature single-key bistable switch of the model KY002L, and other technicians in the field can also use any single-key switch circuit with the same function and interface.

The circuits in the prior art are adopted in the above-mentioned IC1, IC2 and IC3, and the internal circuit structure and the performance of each pin are all public information, which is not described in the present specification.

And the audio power amplifier circuit IC3 is also externally connected with a PTT key, and the PTT key and the second resistor are connected in parallel with the audio power amplifier circuit IC3 and a ground line.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The utility model provides a handle formula handset, includes power, handle formula shell and embeds the audio power amplifier circuit in handle formula shell, its characterized in that: the handle type transmitter-receiver also comprises a loudspeaker arranged in the handle type shell, and a function conversion circuit used for converting between sound amplifying and transmitting functions, wherein an audio signal from a radio station is transmitted to the loudspeaker or the audio power amplifier circuit through the function conversion circuit, and the audio power amplifier circuit is electrically connected with the loudspeaker.

2. The handle type handset according to claim 1, wherein: the function conversion circuit comprises a sound amplifying function loop, a transmitting and receiving function circuit and a change-over switch, wherein the input end of the loudspeaker is connected with the change-over switch, and the change-over switch is respectively connected with the sound amplifying function loop and the transmitting and receiving function circuit in different states.

3. The handle type handset according to claim 2, wherein: the transmitting and receiving function circuit comprises a third resistor arranged on the circuit between the change-over switch and the radio station audio signal input end and a grounding circuit of the loudspeaker output end.

4. The handle type handset according to claim 2, wherein: the sound amplifying function loop comprises an impedance matcher arranged on a circuit between the input end of the audio power amplifier circuit and the input end of the radio station audio signal, and a circuit for connecting the audio power amplifier circuit and a loudspeaker.

5. The handle type handset according to claim 4, wherein: the impedance matcher includes a first resistor and a first capacitor connected in series.

6. The handle type handset according to any one of claims 2 to 5, wherein: the change-over switch comprises a magnetic latching relay, a sound amplifying switch and a transmitting and receiving switch which are connected in parallel on a circuit of the magnetic latching relay and a ground wire.

7. The handle type handset according to claim 6, wherein: the power supply is a built-in storage battery, the handle-type headset further comprises an input end of a charging protection circuit which is arranged in the handle-type shell and is electrically connected with the charging port, and an output end of the charging protection circuit is respectively connected with the magnetic latching relay, the ground wire, the audio power amplifier circuit and the charging end of the storage battery.

8. The handle type handset according to claim 7, wherein: the handle type headset further comprises a single-key switch circuit which is arranged in the handle type shell, wherein the input end of the single-key switch circuit is electrically connected with one output end of the charging protection circuit, the output end of the single-key switch circuit is electrically connected with the audio power amplifier circuit and the input end of the magnetic latching relay, and the single-key switch circuit is further connected with a power switch.

9. The handle type handset according to claim 8, wherein: and the audio power amplifier circuit is also externally connected with a PTT key, and the PTT key and the second resistor are connected in parallel with the audio power amplifier circuit and the ground line.