Bluetooth front-back bidirectional electronic pickup noise reduction earphone

Abstract

The utility model discloses a bluetooth front and back bidirectional electronic pickup noise reduction earphone, which relates to the earphone technology field, and comprises a left earphone main body, a right earphone main body, an earmuff and a control unit, the earmuff is sleeved outside the left earphone main body and the right earphone main body, the control unit is installed on the surface of the left earphone main body, and the control unit is installed on the surface of the right earphone main body. The surface of the left earphone main body and the surface of the right earphone main body are respectively provided with a forward microphone module used for capturing a voice signal of a user and a backward microphone used for picking up an environment noise signal. And a Bluetooth module for realizing wireless connection between the earphone and external equipment and a digital signal processing module for processing signals from the forward microphone and the backward microphone and optimizing a pickup effect and a noise reduction effect are respectively arranged in the left earphone main body. According to the noise reduction earphone, through cooperative work of the front and rear bidirectional microphones and combination of a passive noise reduction technology, efficient environmental noise elimination and high-quality audio transmission are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of earphones, in particular to a Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone. Background Technique

[0002] With the popularization of wireless audio devices, Bluetooth earphones are widely used in daily life due to their portability and convenience. However, there are still certain deficiencies in the call quality and audio experience of existing Bluetooth earphones in noisy environments. Especially in noisy environments such as subways and buses, external noise will seriously interfere with the user's listening and call experience. Therefore, it is particularly important to provide a Bluetooth earphone that can effectively pick up sound and reduce noise. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone, which solves the problems raised in the above background technique.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone, including a left earphone body, a right earphone body, an ear cup, and a control unit. The ear cup is sleeved outside the left earphone body and the right earphone body. The control unit is installed on the surface of the left earphone body. A forward microphone module for capturing the user's voice signal and a rear microphone for picking up environmental noise signals are installed on the surfaces of the left earphone body and the right earphone body respectively. A Bluetooth module for realizing the wireless connection between the earphone and an external device and a digital signal processing module for processing signals from the forward and rear microphones to optimize the sound pickup effect and noise reduction effect are respectively arranged inside the left earphone body.

[0005] Furthermore, a power supply module is arranged inside the right earphone body;

[0006] The power supply module includes a dry battery placement bin arranged at the top of the right earphone body (B). Card slots are arranged on both sides inside the dry battery placement bin. A series pole piece, a negative pole piece, and a positive pole piece are snapped into the card slots. A dry battery is connected between the negative pole piece and the positive pole piece. A battery cover is snap-fitted outside the dry battery placement bin.

[0007] Furthermore, the forward microphone module and the rear microphone both include a silica gel sealing plug installed inside the left earphone body and the right earphone body. A forward microphone is fixed inside the silica gel sealing plug, and a sound-absorbing sponge is arranged outside the silica gel sealing plug. A steel mesh connected to the left earphone body and the right earphone body is arranged outside the sound-absorbing sponge.

[0008] Further, the earcup includes an earpad and a backing plate. The earpad is made of sound insulation material and is sleeved outside the left earphone body and the right earphone body. The backing plate is installed on the end faces of the left earphone body and the right earphone body.

[0009] Further, the control unit includes a knob and a button module. The knob can adjust the pickup volume, and the button module can answer, hang up calls, and switch the Bluetooth mode.

[0010] Further, a PCBA circuit board two is installed inside the left earphone body. The Bluetooth module and the digital signal processing module are both integrally arranged on the PCBA circuit board two. A potentiometer is also integrally arranged on the PCBA circuit board two. An O-ring is sleeved on the handle of the potentiometer, and the potentiometer is adhesively connected with a plastic roller. The plastic roller is rotatably arranged in a roller slot reserved in the left earphone body.

[0011] Further, the button module includes a soft rubber button and a PCBA circuit board one. The soft rubber button is integrally arranged on the PCBA circuit board one. An LED lamp serving as a signal lamp is arranged on the PCBA circuit board one.

[0012] The utility model provides a Bluetooth front and rear two-way electronic pickup noise-canceling earphone. Compared with the prior art, it has the following beneficial effects:

[0013] Through the combined use of the front and rear microphones, this noise-canceling earphone can accurately pick up the user's voice and effectively identify and eliminate environmental noise. At the same time, the use of slow rebound sponge material for passive noise reduction significantly improves the noise-canceling performance of the earphone. The pickup volume is adjusted through the middle knob, and the Bluetooth function is switched with one key, which is convenient to operate. In addition, the application of digital signal processing technology makes the audio signal processing more accurate, and the call and music experience is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the utility model;

[0015] Figure 2 is a schematic structural diagram of the left earphone body in the utility model;

[0016] Figure 3 is a schematic structural diagram of the front microphone module in the utility model;

[0017] Figure 4 is a schematic structural diagram of the button module in the utility model;

[0018] Figure 5 is a schematic structural diagram of the power supply module in the utility model;

[0019] Figure 6 This is a schematic structural diagram of the earbud in the present utility model.

[0020] In the figure: A, the left earphone main body; B, the right earphone main body; C, the earcup 4; D, the control unit; 103, the Bluetooth module; 104, the digital signal processing module; 201, the power module; 2011, the battery cover; 2012, the dry battery; 2013, the negative electrode plate; 2014, the positive electrode plate; 2015, the series electrode plate; 301, the forward microphone module; 3011, the steel mesh; 3012, the sound-absorbing sponge; 3013, the silicone sealing plug; 3014, the forward microphone; 302, the rearward microphone; 401, the earbud; 402, the backing plate; 501, the knob; 5011, the plastic roller; 5012, the potentiometer; 5013, the O-ring; 502, the button module; 5021, the soft rubber button; 5022, the PCBA circuit board one; 6011, the screw; 701, the PCBA circuit board two. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1-6 , the present utility model provides a technical solution: a Bluetooth front and rear two-way electronic sound pickup and noise reduction earphone, mainly composed of a left earphone main body A, a right earphone main body B, an earcup C and a control unit D. The earcup C is sleeved outside the left earphone main body A and the right earphone main body B. The control unit D is installed on the surface of the left earphone main body A. On the surfaces of the left earphone main body A and the right earphone main body B, there are respectively installed a forward microphone module 301 for capturing the voice signal of the user and a rearward microphone 302 for picking up the environmental noise signal. Inside the left earphone main body A, there are respectively provided a Bluetooth module 103 for realizing the wireless connection between the earphone and an external device and a digital signal processing module 104 for processing the signals from the forward and rearward microphones to optimize the sound pickup effect and the noise reduction effect (the Bluetooth module 103 and the digital signal processing module 104 are respectively soldered on the front side of the PCBA circuit board two 701). Through the coordinated work of the forward microphone module 301 and the rearward microphone 302 and the combination of passive noise reduction technology, efficient environmental noise cancellation and high-quality audio transmission are achieved.

[0023] The power module 201 includes a dry battery storage compartment provided on the top of the right earphone body (B). A card slot is provided on both sides of the dry battery storage compartment. A series electrode 2015, a negative electrode 2013, and a positive electrode 2014 are inserted into the card slot. A dry battery 2012 is connected between the negative electrode 2013 and the positive electrode 2014. A battery cover 2011 is connected to the outside of the dry battery storage compartment.

[0024] In addition, a power module 201 is provided in the right earphone body B, which can provide the power support required by the earphone. A dry battery storage compartment is provided at the top of the right earphone body B. The battery storage compartment is designed with a series electrode 2015 for assembling a negative electrode sheet 2013, a positive electrode sheet 2014, and a positive and negative electrode connecting sheet.

[0025] After two dry batteries 2012 are placed in the battery compartment through interference fit, the battery cover 2011 is finally snapped into the corresponding series pole pieces of the shell and connected using a buckle.

[0026] When assembling the forward microphone module 301, insert the silicone sealing plug 3013 into the corresponding hole of the left earphone main body A using an interference fit, then install the forward microphone 3014 into the silicone sealing plug 3013 using an interference fit, then place the sound-absorbing sponge 3012 on top of the silicone sealing plug 3013, and finally fix the steel mesh 3011 in the corresponding groove of the outer shell of the left earphone main body A using an interference fit, and fix it to the outer shell of the left earphone main body A using an ultrasonic machine. Similarly, the installation method of the rear microphone 302 is the same.

[0027] The left earphone body A and the right earphone body B are equipped with sponge earmuffs C that can reduce noise and sound insulation. The earmuffs C are composed of earmuffs 401 and pads 402. The bottom of the earmuffs 401 adopts a backing adhesive process and is bonded to the plastic pad 402. The pad 402 is designed with a full circle of buckles. The left earphone body A and the right earphone body B have matching buckles on the ear shells for snap connection. Users can install and disassemble them for replacement.

[0028] The control unit D consists of a knob 501 and a button module 502. The knob 501 can adjust the pickup volume, and the button module 502 can answer and end calls and switch the Bluetooth mode. Among them, a slot for placing a roller is designed on the ear shell of the left earphone body A. The plastic roller 5011 is connected to the internal potentiometer 5012 by an interference fit adhesive. An O-ring 5013 is put on the handle of the potentiometer 5012 for sealing the potentiometer 5012 with the outside. After assembly, the PCBA circuit board 701 is placed on the potentiometer 5012 and welded to connect. The PCBA circuit board 701 is fixed to the ear shell of the left earphone body A using three screws 6011.

[0029] The button module 502 is composed of a soft rubber button 5021 and a PCBA circuit board 1 5022. The soft rubber button 5021 is placed into the corresponding direction hole of the left earphone main body A, and then the PCBA circuit board 1 5022 is placed above the soft rubber button 5021. Positioning posts are designed on the ear shell of the left earphone main body A to limit the PCBA circuit board 1 5022. A whole circle of ribs is designed on the soft rubber button 5021, and the two are tightly fitted through screws 6011. The soft rubber button 5021 uses a milky white body sprayed with black paint, and strip-shaped symbols that can transmit light are laser engraved on the surface. Corresponding LED lights are provided on the PCBA circuit board 1 5022, which can be used as signal lights during operation.

Claims

1. A Bluetooth two-way front and rear electronic sound pickup and noise reduction earphone, comprising a left earphone body (A), a right earphone body (B), an ear cup (C), and a control unit (D). The ear cup (C) is sleeved outside the left earphone body (A) and the right earphone body (B), and the control unit (D) is installed on the surface of the left earphone body (A), characterized in that, On the surfaces of the left earphone body (A) and the right earphone body (B), a forward microphone module (301) for capturing the user's voice signal and a rear microphone (302) for picking up ambient noise signals are installed. Inside the left earphone body (A), a Bluetooth module (103) for realizing wireless connection between the earphone and an external device and a digital signal processing module (104) for processing signals from the forward and rear microphones to optimize the voice pickup effect and noise reduction effect are respectively provided.

2. The Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone according to claim 1, wherein Inside the right earphone body (B), a power module (201) is provided; The power module (201) includes a dry battery placement bin arranged at the top of the right earphone body (B). On both inner sides of the dry battery placement bin, card slots are provided. A series pole piece (2015), a negative pole piece (2013), and a positive pole piece (2014) are snapped into the card slots. A dry battery (2012) is connected between the negative pole piece (2013) and the positive pole piece (2014). A battery cover (2011) is snap-fitted to the outside of the dry battery placement bin.

3. The Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone according to claim 1, wherein, Both the forward microphone module (301) and the rear microphone (302) include a silica gel sealing plug (3013) installed inside the left earphone body (A) and the right earphone body (B). A forward microphone (3014) is fixed inside the silica gel sealing plug (3013). A sound-absorbing sponge (3012) is arranged on the outside of the silica gel sealing plug (3013). A steel mesh (3011) connected to the left earphone body (A) and the right earphone body (B) is arranged on the outside of the sound-absorbing sponge (3012).

4. The bidirectional Bluetooth front and rear electronic sound pickup and noise reduction earphone according to claim 1, wherein The earcup (C) includes an ear pad (401) and a backing plate (402). The ear pad (401) is made of sound-insulating material and is sleeved outside the left earphone body (A) and the right earphone body (B). The backing plate (402) is installed on the end faces of the left earphone body (A) and the right earphone body (B).

5. A Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone according to claim 1, characterized in that, The control unit (D) includes a knob (501) and a button module (502). The knob (501) can adjust the voice pickup volume, and the button module (502) can answer and hang up calls and switch the Bluetooth mode on and off.

6. The Bluetooth front and rear two-way electronic sound pickup and noise reduction earphone according to claim 5, characterized in that, Inside the left earphone body (A), a second PCBA circuit board (701) is installed. The Bluetooth module (103) and the digital signal processing module (104) are both integrally arranged on the second PCBA circuit board (701). A potentiometer (5012) is also integrally arranged on the second PCBA circuit board (701). An O-ring (5013) is sleeved on the handle of the potentiometer (5012). The potentiometer (5012) is adhesively connected to a plastic roller (5011). The plastic roller (5011) is rotatably arranged in a roller slot reserved in the left earphone body (A).

7. A Bluetooth front and rear bidirectional electronic sound pickup and noise reduction earphone according to claim 5, characterized in that, The button module (502) includes a soft rubber button (5021) and a first PCBA circuit board (5022). The soft rubber button (5021) is integrally arranged on the first PCBA circuit board (5022). An LED lamp serving as a signal lamp is arranged on the first PCBA circuit board (5022).

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