CN201758441U - A safety protection type passive noise reduction earphone - Google Patents

Abstract

The utility model relates to the technical field of earphones, in particular to a safety protection type passive noise reduction earphone, which comprises a loudspeaker, a head band, two earshells, a first sponge sheet, a sound disc, a sealing ring, an earcap and a second sponge sheet, wherein the head band is provided with a support, the head band is connected with the two earshells through the support, the sound disc is used for fixing the loudspeaker and the earcap, the sound disc is provided with sound holes, the earshells are connected with the inner side surface of the sound disc, the connecting part of the earshells and the inner side surface of the sound disc is provided with the sealing ring, the loudspeaker is arranged on the inner side surface of the sound disc, the outer side surface of the sound disc is connected with the earcap, the first sponge sheet is arranged in the earshells, the second sponge sheet is; one of the ear shells is provided with an audio signal female seat. The utility model discloses both can be in the effective isolated noise of the big environment of noise, protection user's hearing, the audio signal who also does simultaneously receive intercom, cell-phone, MP3, radio station or other communications facilities etc. in noisy environment.

Description

A safety protection type passive noise reduction earphone

technical field

The utility model relates to the technical field of earphones, in particular to a safety protection type passive noise reduction earphone.

Background technique

With the continuous development of science and technology, earphone products have gradually matured since their invention. In terms of usage, earphones are generally divided into safety protection series and audio signal receiving series; safety protection series are generally realized through noise reduction technology, among which the production cost of active noise reduction technology is relatively high, while passive noise reduction headphones are usually ignored Receive audio signal function.

In the prior art, an active noise reduction method is used to reduce the external noise of the earphone. For example, the Chinese utility model patent with the authorized announcement number "CN 201054780Y" discloses an automatic noise reduction earphone, including sound collection for collecting external background noise. device A/D conversion module, adder, D/A conversion module, sound terminal player; the sound collector is placed on the connecting line of the external jack of the earphone, and the output of the sound collector is connected through the A/D conversion module One signal input end of the adder, the electrical signal output by the system is connected to the other signal input end of the adder, and the output end of the adder is connected to the sound terminal player through the D/A conversion module. The utility model is used in various noise backgrounds. In the environment, it can achieve the purpose of effective and active noise reduction. Such earphones capable of active noise reduction achieve the purpose of active noise reduction through special design of the circuit, which increases the complexity of the circuit and makes the cost higher.

In addition, the existing passive noise reduction earphones (also known as earmuffs) generally only have the function of reducing noise, and do not have the function of communication or receiving audio signals, and the function is relatively simple.

Contents of the invention

The purpose of the utility model is to provide a safety-protective passive noise-canceling earphone aimed at the deficiencies of the prior art, which can effectively reduce the cost of the earphone.

In order to achieve the above object, the utility model is achieved through the following technical solutions: a safety protection type passive noise reduction earphone, which includes a horn, a headband and two ear shells, the headband is provided with a bracket, and the headband is connected to the two ear shells through the bracket. The two ear shells are connected, and also include a first sponge sheet, a sounding plate, a sealing ring, earmuffs and a second sponge sheet, the sounding plate is used to fix the horn and the earmuffs, the sounding plate is provided with a sound hole, and the earmuffs are provided with sound holes. The shell is connected to the inner surface of the sound plate, the sealing ring is arranged at the connection between the ear shell and the inner surface of the sound plate, the horn is arranged on the inner surface of the sound plate, the outer surface of the sound plate is connected to the earmuffs, and the first sponge sheet Set in the ear shell, the second sponge piece is attached to the outer surface of the sound plate, and the second sponge piece covers the sound hole; one of the ear shells is provided with an audio signal female seat.

The inner surface of the sound plate is located at the corresponding position of the sound hole, and a speaker installation groove is opened, and the speaker is embedded in the speaker installation groove.

The ear shell is provided with a pin buckle cover at a corresponding position of the audio signal socket.

It also includes an audio signal connection line for connecting an external audio source, and the audio signal connection line is connected to the audio signal socket.

The audio signal connection line may be provided with a microphone.

Both ends of the headband are also provided with a headband buckle cover, and the bracket passes through the headband buckle cover.

It also includes a support arm, the ear shell and the support arm are hinged, a support arm plug is provided at the hinge joint of the ear shell and the support arm, and the support is inserted into the support arm.

The ear shell is provided with a wire sleeve.

The headband is provided with a headgear.

The beneficial effects of the utility model are as follows: a safety protection type passive noise reduction earphone described in the utility model, which includes a horn, a headband and two earshells, the headband is provided with a bracket, and the headband is connected to the two ear shells through the bracket. The shell connection also includes a first sponge sheet, a sounding plate, a sealing ring, earmuffs and a second sponge sheet, the sounding plate is used to fix the horn and the earmuffs, the sounding plate is provided with a sound hole, and the ear shell and The inner side of the sounding plate is connected, the joint between the ear shell and the inner side of the sounding plate is provided with the sealing ring, the horn is arranged on the inner side of the sounding plate, the outer side of the sounding plate is connected with the earmuffs, and the first sponge sheet is arranged on the In the ear shell, the second sponge sheet is attached to the outer surface of the sound plate, and the second sponge sheet covers the sound hole; one of the ear shells is provided with an audio signal female seat. The audio signal of the earphone with the above structure is transmitted through the audio signal socket. When the earphone is worn, due to the unique and precise earshell shape and cavity design, as well as the airtight precision formed between the earmuffs, the sound plate and the ear Computing space, its sealing ring, earmuffs, first sponge piece, and ear shell can effectively block external noise, thereby reducing noise. This kind of headphone function that achieves passive noise reduction through structural improvement does not need to be changed. The design of the circuit can effectively reduce the cost of the earphone. When the safety protection type passive noise reduction earphone described in this utility model is only used as hearing protection to effectively isolate external noise, this function can be realized only by plugging the audio signal socket. In addition, the safety protection type passive noise reduction earphone described in the utility model also includes an audio signal connection line for connecting to an external sound source. The audio signal connection line can be provided with a microphone. The microphone can be used for communication, so that the functions of the earphone are more diversified.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of an exploded structure of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

Embodiment 1, as shown in Figure 1 and Figure 2, a kind of safety protection type passive noise reduction earphone, it comprises loudspeaker 8, headband 1 and two ear shells 2, described headband 1 is provided with bracket 3, headband 1 is connected to the two ear shells 2 through the bracket 3, and also includes a first sponge piece 91, a sound plate 4, a sealing ring 41, earmuffs 5 and a second sponge piece 90, and the sound plate 4 is used to fix the speaker 8 and the ear Cover 5, said sounding plate 4 is provided with a sound hole, said earshell 2 is connected with the inner surface of sounding plate 4, said sealing ring 41 is arranged at the joint between ear shell 2 and the inner surface of sounding plate 4, and horn 8 is arranged on The inner side of the pronunciation disc 4, the outer side of the pronunciation disc 4 is connected with the earmuffs 5, the first sponge sheet 91 is arranged in the ear shell 2, the second sponge sheet 90 is attached to the outer side of the pronunciation disc 4, and The second sponge sheet 90 covers the sound hole; one of the ear shells 2 is provided with an audio signal female seat 6, and its audio signal is transmitted through the audio signal female seat 6. It forms a closed space with the ear, and its sealing ring 41 plays the role of sealing sound insulation and sound leakage prevention, and its first sponge sheet 91 plays the role of bidirectional absorption and filtering noise, ensuring that the cavity of the ear shell 2 is relatively quiet environment, the second sponge sheet 90 is dust-proof, comfortable to wear, and ensures the sound of the speaker 8 to pass through smoothly. This structure can effectively block external noise, thereby reducing noise. This headphone function, which realizes the effect of passive noise reduction through structural improvement, does not need to increase the design of the circuit, and can effectively reduce the cost of the headphone. When the safety protection type passive noise reduction earphone described in this utility model is only used as hearing protection to effectively isolate external noise, this function can be realized only by plugging the audio signal female seat 6 . Wherein, the material of the earshell 2 and the sound plate 4 is ABS, and the material of the earmuff 5 is a combination of PVC, PU, artificial leather, TPU and sponge.

As a preferred embodiment, the inner surface of the sounding plate 4 is located at the corresponding position of the sound hole and is provided with a speaker installation groove 40, and the horn 8 is embedded in the speaker installation groove 40. Pronunciation disc 4 vibrates and propagates in the sound hole and then enters the ear.

As a preferred embodiment, the audio signal socket 6 is connected with an audio signal connection line 7, and the audio signal connection line 7 is used to connect an external sound source. In this embodiment, the external sound source connected to the audio signal connection line 7 can be a computer, a player Mobile phones, walkie-talkies, mobile phones, etc. By wearing earphones, users can listen to music or realize communication functions while reducing external noise, thereby playing a role in hearing protection.

As a preferred embodiment, the ear shell 2 is provided with a pin buckle cover 60 at a corresponding position of the audio signal socket 6 . When the earphone is not in use, the pin buckle cover 60 covers the interface of the audio signal socket 6 to prevent moisture and dust.

As a preferred embodiment, both ends of the headband 1 are provided with headband buckle covers 10, the bracket 3 passes through the headband buckle covers 10, and the buckle covers play a fastening role. Further, the safety protection type passive noise reduction earphone described in the utility model also includes a support arm 20, the ear shell 2 is hinged with the support arm 20, and an arm plug is arranged at the hinge joint between the ear shell 2 and the support arm 20, and the support 3 Insert the support arm 20, this hinged structure can facilitate the adjustment of the wearing angle of the earphone, which is conducive to improving the wearing comfort. Further, the ear shell 2 is provided with a wire-passing sleeve 21, which is used for fixing the signal wire connected between the speaker 8 and the circuit board.

As a preferred embodiment, the audio signal connection line 7 may optionally be provided with a microphone. Wherein, the audio signal connection line 7 is used to connect the connector of external sound source and can also adopt different connector forms, for example can adopt the connector that is connected with mobile phone, or the connector that is connected with walkie-talkie, when being connected with mobile phone or walkie-talkie, the user can then The microphone is used for communication, so that the safety protection type passive noise reduction earphone described in the utility model can listen to the sound, and can cooperate with the walkie-talkie and the mobile phone for communication, and has more diversified functions.

To sum up, the safety-protective passive noise-canceling earphones described in this utility model have the functions of passive noise-canceling, listening to music, and communication, which can effectively reduce or isolate external noise in a noisy environment and protect the hearing of users. , can also meet the needs of receiving audio signals from walkie-talkies, mobile phones, MP3, radio stations or other communication devices in this environment, and cooperate with walkie-talkies and mobile phones for communication. At the same time, because it can effectively reduce or isolate external noise, it can also be used to improve sleep quality. . The safety protection type passive noise reduction earphone described in the utility model can be widely used in places such as troops, public security, shooting ranges, racing tracks, steel plants, mines, and construction projects. The utility model effectively fills up the gap in the application field of passive noise reduction technology.

Embodiment 2, as shown in Figures 1 and 2, differs from Embodiment 1 in that the headband 1 is provided with a headgear 11 for a safety-protective passive noise reduction earphone described in Embodiment 2. The headgear 11 can cover the bottom of the headband 1, which not only plays an aesthetic role, but also increases the comfort of wearing, and makes the user's head comfortable when wearing it. Its working principle and functions are the same as those in Embodiment 1, and will not be described again here.

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

Claims (9)

1. A safety protection type passive noise reduction earphone, which includes a speaker (8), a headband (1) and two ear shells (2), the headband (1) is provided with a bracket (3), the headband ( 1) It is connected to the two ear shells (2) through the bracket (3), and it is characterized in that it also includes the first sponge piece (91), the sound plate (4), the sealing ring (41), the earmuff (5) and the second Two sponge sheets (90), the sounding plate (4) is used to fix the horn (8) and earmuffs (5), the sounding plate (4) is provided with a sound hole, the ear shell (2) and the sounding plate (4) The inner surface is connected, the sealing ring (41) is provided at the connection between the ear shell (2) and the inner surface of the sounding plate (4), the horn (8) is arranged on the inner surface of the sounding plate (4), and the sounding The outer surface of the disc (4) is connected to the earmuffs (5), the first sponge piece (91) is set inside the ear shell (2), and the second sponge piece (90) is attached to the outside of the sounding plate (4) side, and the second sponge sheet (90)) covers the sound hole; one of the ear shells (2) is provided with an audio signal female seat (6). 2. A safety protection type passive noise reduction earphone according to claim 1, characterized in that: the inner surface of the sound plate (4) is located at the corresponding position of the sound hole, and a speaker installation groove (40) is opened, and the speaker ( 8) Embedded in the speaker installation groove (40). 3. A safety protection type passive noise reduction earphone according to claim 1, characterized in that: the ear shell (2) is provided with a pin buckle cover (60) at the corresponding position of the audio signal socket (6) . 4. A safety protection type passive noise reduction earphone according to claim 1, characterized in that it also includes an audio signal connection line (7) for connecting to an external sound source, and the audio signal connection line (7) is connected to the Audio signal socket (6). 5. A safety protection type passive noise reduction earphone according to claim 1, characterized in that: the audio signal connection line (7) can be provided with a microphone. 6. A safety protection type passive noise reduction earphone according to claim 1, characterized in that: the two ends of the headband (1) are also provided with a headband buckle cover (10), and the bracket (3) Thread the Headgear Buckle Cover (10). 7. A safety protection type passive noise reduction earphone according to claim 1, characterized in that it also includes a support arm (20), the ear shell (2) is hinged with the support arm (20), and the ear shell (2) ) and the support arm (20) are provided with a support arm plug, and the support (3) is inserted into the support arm (20). 8. The safety-protective passive noise reduction earphone according to claim 1, characterized in that: the ear shell (2) is provided with a cable sleeve (21). 9. A safety protection type passive noise reduction earphone according to any one of claims 1 to 8, characterized in that: the headband (1) is provided with a headgear (11).

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