CN222053341U

CN222053341U - Real wireless Bluetooth pair ear type frequency modulation earphone

Info

Publication number: CN222053341U
Application number: CN202420650412.9U
Authority: CN
Inventors: 李文武
Original assignee: Zhengzhou Aiben Electronic Technology Co ltd
Current assignee: Zhengzhou Aiben Electronic Technology Co ltd
Priority date: 2024-03-29
Filing date: 2024-03-29
Publication date: 2024-11-22
Anticipated expiration: 2034-03-29

Abstract

The utility model belongs to the field of Bluetooth headphones, and in particular relates to a true wireless Bluetooth pair-ear type frequency modulation headphone, which comprises: the Bluetooth earphone comprises a shell, a frequency modulation circuit, a frequency modulation antenna and a wired earphone, wherein an earphone groove for accommodating the Bluetooth earphone is formed in the shell; the frequency modulation circuit is arranged in the shell and used for converting a received FM signal into an audio signal and outputting the audio signal to the TYPE-C socket; the frequency modulation antenna is electrically connected with the frequency modulation circuit and is used for receiving FM signals and outputting the FM signals to the frequency modulation circuit; the connecting end of the wired earphone can be inserted into the TYPE-C socket; according to the utility model, an examinee can listen to the contents of a four-level and six-level hearing test by using the wired earphone connected with the charging bin, the position and the direction of the radio antenna can be adjusted according to actual conditions, the frequency modulation receiving effect can be adjusted, and the wired earphone can be used as a frequency modulation antenna, so that the frequency modulation receiving intensity is enhanced; after the four-level and six-level examination, the utility model can also be used as a conventional Bluetooth earphone, and the use value of the earphone is improved.

Description

Real wireless Bluetooth pair ear type frequency modulation earphone

Technical Field

The utility model belongs to the technical field of Bluetooth headphones, and particularly relates to a real wireless Bluetooth pair-ear type frequency modulation headphone.

Background

The English test of the whole university is a large-scale standardized test. At present, the four-level and six-level hearing examination frequency modulation radio earphone is head-mounted, has large volume, single function and strong cheap sense, and is usually idle after examination. After the four-level and six-level earphone is worn, the antenna is relatively fixed, and when the earphone is used, an examinee sits on a seat for testing or answering questions, and the position and the direction of the antenna are inconvenient to adjust, so that the frequency modulation receiving effect is optimized.

Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide a real wireless Bluetooth pair-ear type frequency modulation earphone.

In order to achieve the above object, the present utility model provides the following technical solutions:

A truly wireless bluetooth pair-ear fm headset, comprising:

the Bluetooth earphone comprises a shell, wherein an earphone groove for accommodating the Bluetooth earphone is integrally formed on the upper surface of the shell;

The frequency modulation circuit is arranged in the shell and used for converting the received FM signal into an audio signal and outputting the audio signal to the TYPE-C socket;

the frequency modulation antenna is arranged in the shell, is electrically connected with the frequency modulation circuit and is used for receiving FM signals and outputting the FM signals to the frequency modulation circuit;

And the connecting end of the wired earphone can be inserted into the TYPE-C socket.

Further, the frequency modulation antenna comprises a magnetic coil and an FPC antenna; the magnetic coil is electrically connected with the frequency modulation circuit; the FPC antenna is connected with the magnetic coil in series.

Further, a main board and a total battery for supplying power to the main board are arranged in the shell, and the main board and the total battery are arranged between the back surfaces of the two earphone slots; and the frequency modulation circuit and the TYPE-C socket are mounted on the main board.

Further, the magnetic coil is placed in series between the main board and the back of the earphone slot on one side, and the FPC antenna is attached to one side, far away from the main board, of the back of the base slot on the same side.

Further, a display screen is arranged in the shell, and the display screen is positioned between the two earphone slots and is close to the edge of the shell.

Further, a total control key is arranged in the shell, and the total control key at least comprises a start key, a CET key, a "+" key and a "-" key; the total control keys and the display screen are arranged in a row.

Further, a plurality of mounting columns are integrally formed on the back surface of the shell, mounting holes are formed in the main board corresponding to the mounting columns, and the main board is in threaded connection with the mounting columns through bolts penetrating through the mounting holes; the mounting columns are at least three in scattered arrangement, and one side of at least two of the mounting columns is provided with a positioning column; the top end of the positioning column can be inserted into the main board; a connecting plate is fixed between the positioning column and the mounting column.

Further, the TYPE-C socket is also connected with a power management module, and the battery compartment can be charged through the TYPE-C socket.

Further, the shell is buckled on the back side of the shell, an upper cover is hinged to one side of the shell, and the upper cover is matched with the shell in a buckled or suction manner.

Further, an FM signal isolation circuit is further connected between the FM circuit and the TYPE-C socket, and the FM signal isolation circuit isolates 50-108 MHz frequencies through an LC filter circuit.

The beneficial effects of the utility model are as follows:

according to the utility model, the frequency modulation antenna and the frequency modulation circuit are arranged in the charging bin, so that the charging bin of the small-volume real wireless Bluetooth headset has an FM listening function, so that an examinee can directly insert a wired headset into a TYPE-C socket to listen to the contents of a four-six-level hearing test, the position and the direction of the radio antenna can be adjusted according to actual conditions, the frequency modulation receiving effect can be adjusted, and the wired headset can be used as the frequency modulation antenna to enhance the frequency modulation receiving intensity;

After the four-level and six-level examination, the utility model can also be used as a conventional Bluetooth headset to be connected with intelligent mobile terminals such as mobile phones, thereby improving the use value of the headset and saving the cost of consumers.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. Wherein:

fig. 1 is a block diagram showing the structure of an embodiment of the present utility model.

FIG. 2 is a schematic workflow diagram of an embodiment of the present utility model.

Fig. 3 is a schematic diagram of a wired earphone output flow according to an embodiment of the present utility model.

Fig. 4 is a schematic front perspective view of a charging bin according to an embodiment of the utility model.

Fig. 5 is a schematic rear perspective view of a charging bin according to an embodiment of the utility model.

Fig. 6 is a schematic diagram of a position of a fm antenna according to an embodiment of the utility model.

Fig. 7 is a schematic view of a housing structure according to an embodiment of the utility model.

Fig. 8 is a block diagram showing a circuit configuration of the charging bin of the present utility model.

Fig. 9 is a schematic circuit diagram of an FM signal isolation circuit according to the present utility model.

In the figure: 1-casing, 2-earphone groove, 3-transparent plate, 4-total control button, 5-magnetic coil, 6-FPC antenna, 7-mainboard, 8-TYPE-C socket, 9-display screen, 10-mounting hole, 11-reference column, 12-thimble that charges, 13-total battery, 14-mounting column, 15-upper groove, 16-shell, 17-upper cover.

Detailed Description

The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

In the description of the present utility model, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present utility model and do not require that the present utility model must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.

The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

As shown in fig. 1 to 9, a true wireless bluetooth pair ear fm headset includes: the Bluetooth earphone comprises a shell 1, a frequency modulation circuit, a frequency modulation antenna 6, a Bluetooth earphone and a wired earphone; an earphone slot 2 for accommodating a Bluetooth earphone is integrally formed on the upper surface of the shell 1; the frequency modulation circuit is arranged in the shell 1 and is used for converting a received FM signal into an audio signal and outputting the audio signal to the TYPE-C socket 8; the frequency modulation antenna 6 is arranged in the shell 1 and is electrically connected with the frequency modulation circuit, and is used for receiving FM signals and outputting the FM signals to the frequency modulation circuit; the connection end of the wired earphone can be inserted into the TYPE-C socket 8;

The improved point of the utility model is that the charging bin is equivalent to adding a set of FM listening system in the charging bin; the Bluetooth earphone has the same function as a conventional true wireless Bluetooth earphone, and can be independently connected with a mobile phone or other intelligent terminals through Bluetooth, so that the Bluetooth earphone is used as the conventional Bluetooth earphone in non-examination; such a true wireless bluetooth headset typically includes a left and right headset with a bluetooth circuit, an indicator light, a speaker, a separate control button, and a separate battery for powering the bluetooth headset.

The charging bin has an FM receiving function, can receive FM signals of four-six-level examination, and can be used for students to wear wired earphones when in use, and the wired earphones are inserted into the TYPE-C socket 8 to listen to the contents of the four-six-level examination; in the embodiment, the wired earphone is also used as the FM antenna 6, and the wired earphone is externally arranged, so that the volume of the charging bin can be reduced, and the product is convenient to carry; meanwhile, the position and the direction of the wired earphone or the charging bin can be directly adjusted during examination, so that the signal can be adjusted, the receiving effect is enhanced, and the use is convenient; according to the utility model, the FM function is arranged in the charging bin instead of the Bluetooth earphone, so that the FM can be listened to with the least elements, and the interference caused by insufficient electric quantity or unexpected pairing with other intelligent terminals of the Bluetooth earphone during an examination can be avoided by using the wired earphone to listen to the FM.

As shown in fig. 6 and 7, a main board 7 and a total battery 13 for supplying power to the main board 7 are arranged in the shell 1, and the main board 7 and the total battery 13 are arranged between the back surfaces of the two earphone slots 2; the main board 7 is also provided with a charging thimble 12 for being in contact with a charging contact of the Bluetooth headset for charging; specifically, the main board 7 is mounted as follows: the back of the shell 1 is integrally formed with a plurality of mounting columns 14, threaded holes are vertically formed in the mounting columns 14, mounting holes 10 are formed in the main board 7 corresponding to the mounting columns 14, and the main board 7 is in threaded connection with the mounting columns 14 through bolts penetrating through the mounting holes 10; the mounting columns 14 are at least three in a scattered arrangement, taking three mounting columns 14 as an example, one mounting column 14 is positioned in the center of the main board 7, the other two mounting columns 14 are symmetrically arranged left and right, and the back of the shell 1 positioned on one side of the mounting columns 14 on two sides is fixedly provided with a positioning column 11; positioning holes corresponding to the positioning columns 11 are formed in the main board 7, and the top ends of the positioning columns 11 can be inserted into the positioning holes of the main board 7 to realize quick positioning of the main board 7 at the installation position; because the positioning column 11 is thinner, a connecting plate is also fixed between the positioning column 11 and the mounting column 14, and the root of the connecting plate is fixed on the back of the shell 1, so that the stability of the positioning column 11 is improved; the length of the positioning column 11 is longer than that of the mounting column 14 and the connecting plate; the frequency modulation circuit and the TYPE-C socket 8 are mounted on the main board 7.

In a preferred embodiment, as shown in fig. 4, the main board 7 is further connected with a display screen 9 and a total control key 4; the display screen 9 adopts an LED display screen 9 with the size of 20 mm by 8 mm; the display screen 9 is positioned between the two earphone slots 2 and near the edge of the shell 1, is embedded into the shell 1, and is provided with a display window on the upper surface of the shell 1 and is covered with the transparent plate 3; the total control key 4 at least comprises a start key, a CET key, a "+" key and a "-" key; the starting key is used for starting or closing the FM function, and the display screen 9 is lightened after the starting to display the current frequency; the CET key is long pressed to keep the channel after searching the corresponding channel before examination, so as to quickly switch to the examination channel when needed; the "+" and "-" keys are used to adjust volume, adjust frequency, search frequency;

The total control keys 4 and the display screen 9 are arranged in a row, so that the device is simple and attractive; preferably, the TYPE-C socket 8 is further connected with a power management module, and the battery compartment can be charged through the TYPE-C socket 8; namely, the whole charging bin can realize the required functions only by using one TYPE-C socket 8; the purposes of simplifying the structure and saving the production cost are achieved; charging and listening to audio using TYPE-C jack 8 is conventional in the art.

As shown in fig. 8, the circuit mounted on the motherboard 7 further includes a main control circuit, and the frequency modulation circuit and the power management module are connected with pins corresponding to the main control circuit; wherein, the main control chip of the main control circuit adopts a commercial 8-bit AD type singlechip, the frequency modulation circuit adopts a commercial RDA5807FP chip, and the power management module adopts a commercial SY8826 chip. In a preferred embodiment, as shown in fig. 6, the frequency modulation antenna 6 includes a magnetic coil 5 and an FPC antenna 6; the magnetic coil 5 is electrically connected with the frequency modulation circuit, the FPC antenna 6 is connected with the magnetic coil 5 in series, and the frequency can be better matched by adopting a serial connection mode; the frequency modulation antenna 6 calculates the theoretical length according to the frequency wavelength, if the frequency modulation antenna is connected in parallel, the effect is poor, more coils are needed, and the product cost is increased;

The traditional FM radio or the four-six-level earphone adopts a pull rod antenna 6 or a loop antenna 6, so that the volume is larger; in the embodiment, the magnetic coil 5 and the FPC antenna 6 which are connected in series are selected as the frequency modulation antenna 6, so that higher receiving sensitivity in a small-volume space is realized; specifically, the magnetic coil 5 is placed in series between the main board 7 and the back of the earphone slot 2 on one side, and the FPC antenna 6 is attached to the back of the base slot on the same side, which is far away from the main board 7.

Preferably, as shown in fig. 3, an FM signal isolation circuit is further connected between the FM circuit and the TYPE-C receptacle 8, and the FM signal isolation circuit isolates 50-108 MHz frequencies through an inductance and capacitance LC filter circuit, so as to reduce the absorption of the circuit to wireless signals and increase the sensitivity of the wired earphone for receiving signals by the FM antenna 6; in one embodiment, the LC filter circuit used in the FM signal isolation circuit is shown in the schematic diagram of fig. 9.

As shown in fig. 4 to 7, the back side of the housing 1 is buckled with a housing 16, one side of the housing 16 is hinged with an upper cover 17, and the upper cover 17 is buckled or sucked with the housing 1; the housing 16 has a groove at a position corresponding to the TYPE-C receptacle 8, the groove having an opening corresponding to an end of the TYPE-C receptacle 8; in one embodiment of magnetic fastening, an upper groove 15 is formed on one side of the inner surface of the upper cover 17 away from the hinge edge, a magnet is arranged in the upper groove 15, and correspondingly, a magnetic sheet is adhered or clamped on the back of the shell 1 at a position corresponding to the magnet, so that the upper cover 17 and the shell 1 can be fastened and separated; after the buckling, the whole charging bin is in a flat elliptic box shape. The arc inside the upper cover 17 in fig. 4 and 5 is a construction line for facilitating the display of the upper cover shape.

The utility model has the use process that the charging bin is connected with the wired earphone, the FM signal is received through the wired earphone or the frequency modulation antenna 6, the FM signal is decoded to the TYPE-C socket 8 through the frequency modulation circuit, then the audio signal is output through the wired earphone for examination use, and when the signal is unclear, the receiving effect is adjusted by moving the position of the charging bin; the Bluetooth earphone part can be directly connected with a mobile phone or other intelligent terminals with Bluetooth functions for use.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A true wireless Bluetooth earphone, comprising:

A housing (1), wherein an earphone slot (2) for accommodating a Bluetooth earphone is integrally formed on an upper surface of the housing (1);

A frequency modulation circuit, the frequency modulation circuit being arranged in the housing (1) and being used for converting a received FM signal into an audio signal and outputting the audio signal to a TYPE-C socket (8);

An FM antenna, which is arranged in the housing (1) and is electrically connected to the FM circuit, and is used to receive FM signals and output them to the FM circuit;

A wired headset, the connection end of which can be inserted into the TYPE-C socket (8).

2. The true wireless Bluetooth in-ear FM headset according to claim 1 is characterized in that: the FM antenna comprises a magnetic coil (5) and an FPC antenna (6); the magnetic coil (5) is electrically connected to the FM circuit; and the FPC antenna (6) is connected in series with the magnetic coil (5).

3. The true wireless Bluetooth in-ear FM headset according to claim 2 is characterized in that: a main board (7) and a main battery (13) for supplying power to the main board (7) are arranged in the housing (1), and the main board (7) and the main battery (13) are installed between the backs of the two headphone slots (2); the FM circuit and the TYPE-C socket (8) are mounted on the main board (7).

4. The true wireless Bluetooth in-ear FM headset according to claim 3 is characterized in that: the magnetic coil (5) is placed in series between the main board (7) and the back of the earphone slot (2) on one side, and the FPC antenna (6) is attached to the side of the back of the ear base slot on the same side away from the main board (7).

5. The true wireless Bluetooth in-ear FM headset according to claim 3 is characterized in that a display screen (9) is also provided in the housing (1), and the display screen (9) is located between the two headphone slots (2) and close to the edge of the housing (1).

6. The true wireless Bluetooth in-ear FM headset according to claim 4 is characterized in that: a main control button (4) is arranged in the shell (1), and the main control button (4) at least includes a power button, a CET button, a "+" button and a "-" button; the main control button (4) and the display screen (9) are arranged in a row.

7. The true wireless Bluetooth in-ear FM headset according to claim 3 is characterized in that: a plurality of mounting posts (14) are integrally formed on the back of the shell (1), mounting holes (10) are provided on the main board (7) corresponding to the mounting posts (14), and the main board (7) is threadedly connected to the mounting posts (14) by bolts passing through the mounting holes (10); the number of the mounting posts (14) is at least three and dispersed, and a positioning post (11) is provided on one side of at least two of the mounting posts (14); the top end of the positioning post (11) can be inserted into the main board (7); a connecting plate is fixed between the positioning post (11) and the mounting post (14).

8. The true wireless Bluetooth in-ear FM headset according to claim 1 is characterized in that: the TYPE-C socket (8) is also connected to a power management module, and the battery compartment can be charged through the TYPE-C socket (8).

9. The true wireless Bluetooth in-ear FM headset according to claim 1, characterized in that: a shell (16) is buckled on the back side of the shell (1), and an upper cover (17) is hinged on one side of the shell (16), and the upper cover (17) is buckled or sucked into the shell (1).

10. The true wireless Bluetooth in-ear FM headset according to claim 1 is characterized in that an FM signal isolation circuit is also connected between the FM circuit and the TYPE-C socket (8), and the FM signal isolation circuit isolates the frequency of 50 to 108 MHz through an LC filter circuit.