CN110650402A - Low-frequency half-in-ear earphone with air guide tube - Google Patents

Abstract

The invention relates to the technical field of earphones, in particular to a low-frequency semi-in-ear earphone with an air duct; the loudspeaker comprises an air duct, a front shell, a rear shell connected with the front shell, a loudspeaker positioned in the front shell and the rear shell and a PCB positioned between the loudspeaker and the rear shell; a front cavity is formed between the loudspeaker and the front shell; a first rear cavity is formed between the loudspeaker and the PCB; a second rear cavity is formed between the PCB and the rear shell; the loudspeaker is hermetically connected with the front shell; the PCB is connected with the rear shell in a sealing way; the front shell is hermetically connected with the rear shell; the PCB is provided with a first air guide hole; a second air guide hole is formed in the rear shell; and the two ends of the air duct are respectively connected with the first air guide hole and the second air guide hole. The invention can hear low frequency bass without external sealing.

Description

A low-frequency semi-in-ear earphone with an airway

technical field

The invention relates to the technical field of earphones, in particular to a low-frequency semi-in-ear earphone with an airway.

Background technique

As an indispensable electronic device accessory in modern life, headphones are widely used in various fields. Due to the popularity of electronic products such as mobile phones or video players, earphones, as their supporting products, can be seen everywhere in daily life. It not only brings a lot of convenience to people, but also adds endless fun to life.

The common portable earphones on the market are mainly divided into two types: in-ear earphones and semi-in-ear earphones. Since the design of semi-in-ear earphones does not have the design of earplugs that penetrate into the ear canal like in-ear earphones, it is naturally not A sealed listening environment is formed. Therefore, compared with full in-ear headphones, the current semi-in-ear headphones have the problem of poor low-frequency bass performance: when users close the space near the ears, such as covering their ears with hands, they can obtain detailed sound. Low frequency bass sound, very inconvenient.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a low-frequency semi-in-ear earphone with an air duct, which can hear low-frequency bass without the need for external sealing.

In order to achieve the above purpose, the specific scheme of the present invention is as follows: a low-frequency semi-in-ear earphone with an air duct, comprising an air duct, a front casing, a rear casing that is fastened to the front casing, and located at the front casing and the rear casing. a speaker in the housing and a PCB board between the speaker and the rear housing; a front cavity is formed between the speaker and the front housing; a first rear cavity is formed between the speaker and the PCB board; A second rear cavity is formed between the PCB board and the rear shell; the speaker is sealed with the front shell; the PCB board is sealed with the rear shell; the front shell airtight connection with the rear casing; a first air guide hole is formed on the PCB board; a second air guide hole is arranged on the rear casing; an air guide pipe is communicated between the first air guide hole and the second air guide hole, The airway is located in the second rear cavity.

According to the present invention, the front case includes a first front case and a second front case disposed in the first front case; the first front case is provided with at least one first sound outlet; The second front shell is provided with at least one second sound hole at a position corresponding to the first sound hole; the front cavity includes a first front cavity and a second front cavity; the second front shell is connected to the second sound hole. the speaker forms the second front cavity; the first front cavity is formed between the second front shell and the first front cavity; the second front shell is sealed with the speaker; the first The front casing is sealedly connected with the rear casing; the first rear cavity is communicated with the first front cavity.

According to the present invention, one end of the second front case is clamped with the first front case; the other end of the second front case is provided with at least one communication groove; the first rear cavity passes through the The communication groove communicates with the first front cavity.

The present invention further provides that the low-frequency semi-in-ear earphone further includes a sensor for sensing whether the human ear is approaching; the first front shell is provided with a sensing hole; the second front shell corresponds to the sensing hole The position of the sensor is provided with a groove for placing the sensor; the sensor is electrically connected to the PCB board; the PCB board controls the working state of the speaker after receiving the signal sent by the sensor.

According to the present invention, the air guide tube includes a first air guide section and a second air guide section that communicate with each other; one end of the first air guide section is connected to the first air guide hole; the second air guide section One end of the segment is connected with the second air guide hole; the included angle between the longitudinal axis where the first air guide segment is located and the longitudinal axis where the second air guide segment is located is a right angle.

The present invention further provides that an elastic sealing ring is arranged between the first air guide section and the first air guide hole; and a tuning net is arranged between the second air guide section and the second air guide hole.

The present invention further provides that a battery for supplying power to the PCB board and an antenna for receiving wireless audio signals are further provided in the second rear cavity; the battery and the antenna are both electrically connected to the PCB board; After the PCB board receives the data sent by the antenna, it drives the speaker to emit sound.

The present invention further provides that the speaker and the front casing, between the PCB board and the rear casing, and between the front casing and the rear casing are all sealed and connected by glue.

The present invention further provides that the first air guide hole is arranged in the middle of the PCB board.

The beneficial effects of the present invention are: by sealingly connecting the speaker with the second front case and sealingly connecting the PCB board with the rear case, the connection of a large amount of air from the second front case to the speaker can be effectively prevented Leakage at the connection between the rear case and the PCB board, and the connection between the front case and the rear case, thus effectively improving the strength of the low frequency; without the need for external sealing, the low frequency bass can be heard, which effectively solves the problem. The problem that semi-in-ear headphones cannot obtain better low-frequency bass. In addition, the present invention makes full use of the space in the earphone without increasing the volume of the earphone, the weight of the earphone is almost unchanged, and the wearing is more comfortable.

Description of drawings

The invention will be further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, under the premise of no creative work, other Attached.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the top view of the present invention;

Fig. 3 is A-A' sectional view in Fig. 2;

Fig. 4 is the exploded view of the present invention;

Fig. 5 is the exploded view of another angle of view of the present invention;

6 is an exploded view of the first front shell and the second front shell;

7 is an exploded view of the first front case, the second front case and the loudspeaker;

Among them: 1-front shell; 11-first front shell; 110-first sound outlet; 111-induction hole; 12-second front shell; 120-second sound hole; 121-communication slot; 122- groove; 13-first front cavity; 14-second front cavity; 2-rear shell; 21-first rear cavity; 22-second rear cavity; 23-antenna; 24-battery; 31-speaker ; 32-PCB board; 4-air pipe; 41-first air-guiding section; 42-second air-guiding section; 43-first air-guiding hole; 44-second air-guiding hole; 45-elastic sealing ring; 46-adjustment sound network.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments, but the scope of implementation of the present invention is not limited thereto.

As shown in FIGS. 1-7 , a low-frequency semi-in-ear earphone with an air duct described in this embodiment includes an air duct 4 , a front casing 1 , a rear casing 2 that is fastened to the front casing 1 , The speaker 31 located in the front shell 1 and the rear shell 2 and the PCB board 32 between the speaker 31 and the rear shell 2; a front cavity (not shown in the figure) is formed between the speaker 31 and the front shell 1. A first rear cavity 21 is formed between the speaker 31 and the PCB board 32 ; a second rear cavity 22 is formed between the PCB board 32 and the rear housing 2 ; the The speaker 31 is sealedly connected with the front housing 1; the PCB board 32 is sealed with the rear housing 2; the front housing 1 is sealed with the rear housing 2; an air guide hole 43; the rear casing 2 is provided with a second air guide hole 44; an air guide pipe 4 is communicated between the first air guide hole 43 and the second air guide hole 44, and the air guide pipe 4 is located in the second air guide hole 44. in the rear cavity 22 .

Specifically, ordinary semi-in-ear headphones are usually only sealed with the front casing 1 and the rear casing 2. Therefore, the low-frequency bass effect of ordinary semi-in-ear headphones is poor and the sound leakage is serious, and the speaker 31 and the said The front shell 1, the PCB board 32 and the rear shell 2, and the front shell 1 and the rear shell 2 are all sealed and connected, so the air will still leak out from the gap, and the detailed low-frequency bass cannot be obtained. If the air duct 4 is not completely sealed, the effect of improving the low-frequency bass cannot be achieved or the effect of improving the low-frequency bass is not obvious.

The present invention can effectively connect the speaker 31 with the front case 1 in a sealed connection, the PCB board 32 with the rear case 2 in a sealed connection, and the front case 1 with the rear case 2 in a sealed connection. Prevent a large amount of air from leaking from the connection between the front case 1 and the speaker 31, the connection between the rear case 2 and the PCB board 32, and the connection between the front case 1 and the rear case 2, thereby effectively improving the strength of high frequency and low frequency By setting the air duct 4, when the loudspeaker 31 works, the sound wave energy radiated by the first rear cavity 21 is superimposed with the acoustic wave resonance of the front cavity, and the sound wave energy in the first rear cavity 21 is conducted to the outside through the air duct 4 The middle and low frequency bass are led out through the air duct 4, so the low frequency bass can be heard without external sealing, which effectively solves the problem that semi-in-ear headphones cannot obtain better low frequency bass. In addition, the present invention makes full use of the space in the earphone, and only needs to seal the connection between the speaker 31 and the front housing 1, and between the speaker 31 and the PCB board 32, without increasing the volume of the earphone, The weight of the headset is almost unchanged, making it more comfortable to wear.

As shown in FIGS. 3-7 , in a low-frequency semi-in-ear earphone with an air duct described in this embodiment, the front casing 1 includes a first front casing 11 and is disposed in the first front casing 11 the second front shell 12; the first front shell 11 is provided with at least one first sound hole 110; the second front shell 12 is provided with at least one first sound hole 110 at a position corresponding to the first sound hole 110 Two sound outlets 120; the front cavity includes a first front cavity 13 and a second front cavity 14; the second front shell 12 and the speaker 31 constitute the second front cavity 14; the second front The first front cavity 13 is formed between the shell 12 and the first front cavity 13 ; the second front shell 12 is sealed with the speaker 31 ; the first front shell 11 and the rear shell 2 Sealing connection; the first rear cavity 21 is communicated with the first front cavity 13 .

The front case 1 is sealed with the speaker 31, specifically the second front case 12 is sealed with the speaker 31, and the second front case 12 is sealed with the speaker 31, so as to ensure a better sound quality. Bass sound effect; by setting the first rear cavity 21 to communicate with the first front cavity 13; between the first rear cavity 21 and the first front cavity 13, a small sound box structure can be formed to enhance the intensity of low-frequency bass at the same time Uniformity is good.

As shown in FIGS. 4-7 , in the low-frequency semi-in-ear earphone with air duct described in this embodiment, one end of the second front shell 12 is snap-connected to the first front shell 11 ; The other ends of the two front shells 12 are provided with at least one communication groove 121 ; the first rear cavity 21 communicates with the first front cavity 13 through the communication groove 121 . Preferably, the communication groove 121 is disposed at the other end of the second front shell 12, which is beneficial to equalize the sound effects.

As shown in Figures 3-4, the low-frequency semi-in-ear earphone with an airway described in this embodiment further includes a sensor for sensing whether the human ear is approaching (not shown in the figure). The first front shell 11 is provided with a sensing hole 111; the position corresponding to the sensing hole 111 on the second front shell 12 is provided with a groove 122 for placing the inductor; the sensing The speaker is electrically connected to the PCB board 32; the PCB board 32 controls the working state of the speaker 31 after receiving the signal sent by the sensor.

Specifically, the sensor can be an infrared sensor, a light-sensitive sensor or a thermal-sensitive sensor. When the present invention is far away from the human ear, a signal can be sent to the PCB board 32, and the PCB board 32 can make the pause speaker 31 work in time for the purpose of Save power; when the present invention is put into the human ear again, the sensor sends a signal to the PCB board 32, and the PCB board 32 will restart the speaker 31 to work.

As shown in FIG. 3 , in the low-frequency semi-in-ear earphone with an air duct described in this embodiment, the air duct 4 includes a first air guide section 41 and a second air guide section 42 that communicate with each other; the One end of the first air guide section 41 is connected to the first air guide hole 43; one end of the second air guide section 42 is connected to the second air guide hole 44; the longitudinal axis where the first air guide section 41 is located The included angle with the longitudinal axis where the second air guide section 42 is located is a right angle.

Specifically, the second air guide hole 44 is provided on the top of the rear casing 2 . Through the above arrangement, the low-frequency sound wave can pass through the first air guide section 41 and the second air guide section 42 successively, and then transmit from the second air guide hole 44 Because the propagation of sound waves has a sequence, by bending the first air guide section 41 and the second air guide section 42, the intensity of the low frequency output of the present invention can be increased; on the other hand, the space occupied by the air guide tube 4 can be reduced , reduce the volume of the headset.

As shown in FIG. 3 , in the low-frequency semi-in-ear earphone with an air duct described in this embodiment, an elastic sealing ring 45 is provided between the first air guide section 41 and the first air guide hole 43 ; A tuning net 46 is provided between the second air guide section 42 and the second air guide hole 44 .

Specifically, the material of the elastic sealing ring 45 can be EVA. By arranging the elastic sealing ring 45 and the tuning net 46, the connection between the air duct 4 and the PCB board 32 and between the air duct 4 and the rear housing 2 can be further improved. The tightness ensures that the sound wave can be completely exported from the airway 4, and there will be no leakage at the connection.

As shown in FIGS. 3-5 , in the low-frequency semi-in-ear earphone with air duct described in this embodiment, the second rear cavity 22 is further provided with a battery 24 for supplying power to the PCB board 32 and a battery 24 for supplying power to the PCB board 32 . The antenna 23 for receiving wireless audio signals; the battery 24 and the antenna 23 are both electrically connected to the PCB board 32; after the PCB board 32 receives the data sent by the antenna 23, it drives the speaker 31 to emit sound.

Specifically, through the above setting, wireless communication connection of the earphone can be realized; the antenna 23 sends the received wireless audio signal to the PCB board 32, and then the PCB board 32 drives the speaker 31 to emit sound according to the wireless audio signal.

As shown in FIGS. 1-7 , in the low-frequency semi-in-ear earphone with air duct described in this embodiment, between the speaker 31 and the front housing 1 , the PCB board 32 and the rear The housings 2 and the front housing 1 and the rear housing 2 are all connected by glue.

Specifically, the glue sealing connection is adopted, which has good sealing performance, convenient assembly, high connection strength, low production cost, simple structure, and does not increase the weight of the earphone.

As shown in FIG. 3 , in the low-frequency semi-in-ear earphone with an air duct described in this embodiment, the first air guide hole 43 is provided in the middle of the PCB board 32 .

Through the above arrangement, the sound waves can be uniformly led out from the first air guide hole 43 into the air guide tube 4 .

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

Claims (9)

1. The utility model provides a half in-ear earphone of low frequency with air duct which characterized in that: comprises an air duct (4), a front shell (1), a rear shell (2) buckled on the front shell (1), a loudspeaker (31) positioned in the front shell (1) and the rear shell (2) and a PCB (32) positioned between the loudspeaker (31) and the rear shell (2);

a front cavity is formed between the loudspeaker (31) and the front shell (1); a first rear cavity (21) is formed between the loudspeaker (31) and the PCB (32); a second rear cavity (22) is formed between the PCB (32) and the rear shell (2);

the loudspeaker (31) is hermetically connected with the front shell (1);

the PCB (32) is connected with the rear shell (2) in a sealing way;

the front shell (1) is hermetically connected with the rear shell (2);

the PCB (32) is provided with a first air guide hole (43); a second air guide hole (44) is formed in the rear shell (2); and an air guide pipe (4) is communicated between the first air guide hole (43) and the second air guide hole (44), and the air guide pipe (4) is positioned in the second rear cavity (22).

2. The low frequency semi-in-ear headphone with airway tube of claim 1, wherein:

the front case (1) includes a first front case (11) and a second front case (12) provided inside the first front case (11); the first front shell (11) is provided with at least one first sound outlet hole (110); at least one second sound outlet hole (120) is formed in the second front shell (12) corresponding to the first sound outlet hole (110);

the front cavity comprises a first front cavity (13) and a second front cavity (14);

the second front shell (12) and the loudspeaker (31) form the second front cavity (14); the second front shell (12) and the first front cavity (13) form the first front cavity (13);

the second front shell (12) is hermetically connected with the loudspeaker (31); the first front shell (11) is connected with the rear shell (2) in a sealing way;

the first rear cavity (21) is communicated with the first front cavity (13).

3. The low frequency semi-in-ear headphone with airway tube of claim 2, wherein: one end of the second front shell (12) is clamped with the first front shell (11); the other end of the second front shell (12) is provided with at least one communicating groove (121); the first rear cavity (21) is communicated with the first front cavity (13) through the communication groove (121).

4. The low frequency semi-in-ear headphone with airway tube of claim 2, wherein: the low-frequency half-in-ear earphone also comprises an inductor used for inducing whether the human ear is close to the earphone; the first front shell (11) is provided with an induction hole (111); a groove (122) for placing the inductor is formed in the position, corresponding to the induction hole (111), of the second front shell (12); the inductor is electrically connected with a PCB (32); and the PCB (32) controls the working state of the loudspeaker (31) after receiving the signal sent by the sensor.

5. The low frequency semi-in-ear headphone with airway tube of claim 1, wherein: the air guide pipe (4) comprises a first air guide section (41) and a second air guide section (42) which are communicated with each other;

one end of the first air guide section (41) is connected with the first air guide hole (43);

one end of the second air guide section (42) is connected with the second air guide hole (44);

the included angle between the longitudinal axis of the first air guide section (41) and the longitudinal axis of the second air guide section (42) is a right angle.

6. The low frequency semi-in-ear headphone with airway tube of claim 5, wherein: an elastic sealing ring (45) is arranged between the first air guide section (41) and the first air guide hole (43);

a tuning net (46) is arranged between the second air guide section (42) and the second air guide hole (44).

7. The low frequency semi-in-ear headphone with airway tube of claim 1, wherein: a battery (24) for supplying power to the PCB (32) and an antenna (23) for receiving wireless audio signals are also arranged in the second rear cavity (22); the battery (24) and the antenna (23) are both electrically connected with the PCB (32); and after receiving the data sent by the antenna (23), the PCB (32) drives the loudspeaker (31) to make a sound.

8. The low frequency semi-in-ear headphone with airway tube of claim 1, wherein: the loudspeaker (31) and the front shell (1), the PCB (32) and the rear shell (2) and the front shell (1) and the rear shell (2) are hermetically connected through glue.

9. The low frequency semi-in-ear headphone with airway tube of claim 1, wherein: the first air guide hole (43) is formed in the middle of the PCB (32).

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