WO2019042462A1

WO2019042462A1 - Earphone rear cavity structure

Info

Publication number: WO2019042462A1
Application number: PCT/CN2018/103950
Authority: WO
Inventors: 梅庆开
Original assignee: 深圳市魅动智能股份有限公司
Priority date: 2017-09-04
Filing date: 2018-09-04
Publication date: 2019-03-07
Also published as: CN207427396U

Abstract

The present solution provides an earphone rear cavity structure, comprising an earphone casing having a rear cavity. The rear cavity is provided with a mounting position for placing a speaker (6); a speaker surface for transmitting a sound of the speaker (6) is provided at the mounting position; the speaker (6) is provided with a sound generation surface for making a sound, and the sound generation surface is provided opposite to the speaker surface; a connection member (10) is provided at the edge of an opening of the rear cavity; and a microphone is provided on the connection member (10). According to the present solution, by providing a mounting position in a rear cavity of an earphone casing (1), providing a speaker surface at the mounting position, providing a speaker (6) at the mounting position, configuring a sound generation surface to be opposite to the speaker surface, providing a connection member (10) at a rear cavity cover, and providing a microphone on the connection member (10), an independent speaker cavity is provided in the earphone casing, and the microphone is located in the speaker cavity, so that the earphones can be better noise-reduced, and the noise reduction effect is improved.

Description

Earphone back cavity structure

Technical field

The invention belongs to the field of earphones, and more particularly to a back cavity structure of an earphone.

Background technique

At present, with the development of society, people's living standards have gradually improved, people's requirements for headphones are also getting higher and higher. Noise-reducing headphones have become a trend in the earphone industry, and the industries and fields used are increasing. The noise effect directly affects the sales volume of noise-reducing earphones. The rear cavity acts as an important cavity for noise-reducing earphones. The size and sealing of the cavity seriously affect the acoustic effect and noise reduction effect. The cavity has a good effect. Consistency, simple and easy to adjust, very in line with the acoustic debugging principle of noise canceling headphones, providing a good foundation for acoustics and noise reduction.

technical problem

It is an object of the present invention to provide a back cavity structure of an earphone to solve the problem of poor noise reduction effect of the earphone existing in the prior art.

Technical solution

In order to achieve the above object, the technical solution adopted by the present invention is to provide an earphone rear cavity structure, comprising an ear shell having a rear cavity, wherein the rear cavity is provided with: a mounting position for placing a speaker, the mounting position Provided with a speaker plane for transmitting the sound of the speaker, the speaker being disposed at a mounting position, the speaker having a sound emitting surface for emitting sound, the sound emitting surface being disposed opposite to the sound emitting surface; The opening edge of the cavity is provided with a connecting piece, and the connecting piece is provided with a microphone.

Further, the speaker is further provided with a base matched with the connecting member, the speaker is disposed in the base, and the base is mounted on the connecting member.

Further, a first sealing member for sealing a gap between the mounting position and the base is disposed on a side of the mounting position.

Further, the mounting location is provided with a second seal for sealing a gap between the mounting location and the speaker.

Further, the base is provided with a third sealing member for sealing a gap between the connecting member and the base.

Further, a PCBA is disposed in the rear cavity.

Further, an air guiding tube for discharging the airflow in the front cavity of the earphone is disposed in the rear cavity.

Further, the base and the rear cavity are fixedly connected by a fastener.

Further, the base is mounted on the connecting member by a fastener, and the connecting member is fixedly connected to the ear shell by a fastener.

Further, a positioning position is also provided in the rear cavity.

Further, the base is provided with a bone position that presses the speaker.

Further, the connecting member has a tuning hole in the surrounding bone.

The invention also provides an earphone back cavity structure, comprising an ear shell having a rear cavity, wherein the rear cavity is provided with: a mounting position for placing a speaker, and the mounting position is provided with a speaker surface for transmitting speaker sound The speaker is disposed at a mounting position, the speaker has a sound emitting surface for emitting sound, and the sound emitting surface is disposed opposite to the sound emitting surface; the opening edge of the rear cavity is provided with a connecting member, a microphone is disposed on the connecting member; the speaker is further provided with a base matched with the connecting member, the speaker is disposed in the base, and the base is mounted on the connecting member; a first sealing member for sealing a gap between the mounting position and the base; a second sealing member for sealing a gap between the mounting position and the speaker; The base is provided with a third sealing member for sealing a gap between the connecting member and the base.

Further, the base is provided with a bone position that presses the speaker.

Beneficial effect

The beneficial effect of the earphone rear cavity structure provided by the present invention is that: compared with the prior art, the present invention sets a mounting position in the rear cavity of the ear shell, and sets a speaker surface at the mounting position, and sets the speaker at the mounting position. The sound emitting surface of the speaker is opposite to the sound emitting surface, and a connecting member is arranged on the rear cavity, and a microphone is arranged on the connecting member, so that a separate speaker cavity is arranged in the ear shell, and the microphone head is placed in the speaker cavity. In the meantime, the earphone can be better denoised and the noise reduction effect can be improved.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

FIG. 1 is a schematic structural diagram of a back cavity structure of an earphone according to an embodiment of the present invention.

Among them, the figures in the figure are mainly marked:

1-ear shell; 2-mounting position; 3-air duct; 4-first seal; 5-second seal; 6-speaker; 7-base; 8-third seal; 9-microphone fixed structure ; 10 - connector.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back, ...) in the embodiment of the present invention, the directional indication is only used to explain in a certain posture (as shown in the figure). The relative positional relationship between the components, the motion situation, and the like, if the specific posture changes, the directional indication also changes accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of the "first", "second", etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated. Thus, features defining "first" and "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

Referring to FIG. 1 together, the structure of the back cavity of the earphone provided by the present invention will now be described. The earphone rear cavity structure comprises a middle ear shell 1 having a rear cavity, wherein the rear cavity is provided with a mounting position for placing the speaker 6, and the mounting position is provided with a speaker surface for transmitting the sound of the speaker 6. The speaker 6 is disposed at a mounting position, the speaker 6 has a sound emitting surface for emitting sound, and the sound emitting surface is disposed opposite to the sound emitting surface; the opening edge of the rear cavity is provided with a connecting member 10 ( Described below as the ear shell bracket, that is, the connecting member 10 and the ear shell bracket have the same structure, and the connecting member 10 is covered on the rear chamber. The connector 10 is provided with a microphone head and a microphone fixing structure 9 for stably placing the microphone head. The speaker 6 in the present invention is a horn. The cavity on the ear shell 1 is the back cavity of the earphone.

Further, please refer to FIG. 1 as a specific implementation manner of the back cavity structure of the earphone provided by the present invention. The speaker 6 is further provided with a base 7 matched with the connecting member 10, and the speaker 6 is disposed under the base 7. The connecting member 10 is disposed on the base 7. A first seal 4 for sealing the gap between the mounting position and the base 7 is provided on the side of the mounting seat; a second seal 5 for sealing the gap between the mounting position and the speaker 6 is provided on the mounting position.

Specifically, in FIG. 1, the speaker 6 is mounted at the position of the speaker surface of the mounting position of the ear shell 1, and a second seal 5 is disposed between the speaker 6 and the speaker surface to sandwich the mounting position from the speaker 6. The gap is sealed. While the base 7 is mounted on the connecting member 10 and the connecting member 10 is placed on the rear cavity, the speaker 6 is placed in the base 7 to position and support the speaker 6 through the base 7; accordingly, the base 7 is supported on the ear shell 1 In the mounting position, the first sealing member 4 is disposed between the base 7 and the mounting position to seal the gap between the mounting position and the base 7, such that a chamber for accommodating the speaker 6 is formed in the rear chamber.

Further, please refer to FIG. 1 as a specific embodiment of the earphone rear cavity structure provided by the present invention. The base 7 is provided with a third sealing member 8 for sealing the gap between the connecting member 10 and the base 7. A PCBA is disposed in the rear cavity, and an air guiding tube 3 for discharging the airflow in the front cavity of the earphone is disposed in the rear cavity.

Specifically, as shown in FIG. 1, when the base 7 is installed in the connecting member 10, the third sealing member 8 is fitted on the base 7, and the third sealing member 8 is located between the base 7 and the connecting member 10, The gap between the connector 10 and the base 7 is sealed to seal the rear side of the chamber in which the speaker 6 is housed.

Further, please refer to FIG. 1 as a specific embodiment of the earphone rear cavity structure provided by the present invention, the base 7 and the rear cavity are fixedly connected by fasteners, and the connecting member 10 and the base 7 are fixedly connected by fasteners. The connecting member 10 is also fixedly connected to the rear cavity by a fastener. Specifically, the base 7 is mounted on the connector 10 by fasteners, and the connector 10 is fixedly coupled to the ear shell 1 by fasteners.

Further, please refer to FIG. 1 as a specific implementation manner of the back cavity structure of the earphone provided by the present invention. The rear cavity layout further includes a position 2 of each part of the back cavity of the ear shell, and the part may be a PCBA or a speaker 6 , the base 7, the air guiding tube 3 and the ear shell bracket;

PCBA, the PCBA is fixed in the rear cavity of the ear shell 1 by screws;

a speaker, which is fixed on the ear shell by dispensing, or an EVA ring (or a soft rubber ring of other materials) is added between the ear shell and the speaker to seal, and the base of the speaker is pressed against the base. a speaker for sealing the front cavity and the rear cavity; the speaker base is provided with a wire gap of the speaker cable, and the speaker cable is placed between the speaker base and the connector to seal the EVA (or other The soft rubber material is below; the air guiding tube is installed in the hole position through the front cavity and the rear cavity and does not affect the cavity of the speaker; and also includes the fixed position of the ear shell bracket.

Specifically, as shown in FIG. 1 , a rear position is also provided with a position 2 for placing some parts of the earphone, such as a PCBA, a speaker 6, a base 7, an air pipe 3, and a connecting piece. 10. The PCBA can be fixed in the back cavity by screws. The speaker 6 can be fixed to the ear shell 1 by dispensing, or an EVA ring (or soft rubber ring of other materials), such as the second sealing member 5, can be applied between the ear shell 1 and the speaker 6 to serve as a sealing function. A bone position on the base 7 presses the speaker 6, so that the speaker 6 is sealed to the front cavity and the rear cavity. The base 7 is provided with a line gap of the speaker cable. The speaker cable is placed under the sealed EVA (or other soft material) between the base 7 of the speaker 6 and the connector 10, that is, the speaker cable is placed on the speaker 6. Below the third seal 8 between the base 7 and the connector 10. The airway tube 3 is fitted through the front and rear chambers and does not affect the hole position of the rear chamber of the speaker 6. At the same time, the position 2 also includes a fixed position of the ear shell bracket.

Further, please refer to FIG. 1 as a specific embodiment of the earphone rear cavity structure provided by the present invention. The rear cavity of the speaker serves as a separate closed cavity and is isolated from the other cavity.

At the same time, there is a tuning hole in the surrounding bone of the connecting member 10 constituting the rear cavity of the speaker, and the number of the tuning holes can be adjusted according to actual needs, and the position of the tuning hole can also be adjusted, and the position of the tuning hole can be adjusted. Does not affect the appearance of the entire headset.

The earphone rear cavity structure of the invention mainly comprises an independent speaker rear cavity, a PCBA placement, a feedforward noise reduction microphone placement position and a connecting member (the ear shell bracket is described below, that is, the connecting member and the ear shell bracket have the same structure) ) placed. The rear cavity of the speaker is assembled with EVA (or other soft rubber material) through the speaker base, and then the EVA (or other soft rubber material) is pressed by the surrounding bone on the connecting member to form a separate sealed cavity, and the PCBA is placed in The back cavity of the ear shell is isolated from the rear cavity of the speaker; the feedforward noise reduction microphone is fixed on the connecting member, and is outside the surrounding bone of the connecting member, and the feedforward noise reducing microphone is also isolated from the rear cavity of the speaker; The rear cavity of the speaker is isolated from the noise reduction microphone, which is more conducive to debugging noise reduction.

In the description of the present specification, reference is made to the descriptions of the terms "one embodiment", "some embodiments", "one embodiment", "some embodiments", "example", "specific examples", or "some examples" The specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. A number of simple derivations or substitutions may be made by those skilled in the art without departing from the inventive concept.

Claims

The earphone rear cavity structure is characterized in that: an ear shell having a rear cavity is provided, and the rear cavity is provided with: a mounting position for placing a speaker, and the mounting position is provided with a speaker surface for transmitting the sound of the speaker, The speaker is disposed at a mounting position, the speaker has a sound emitting surface for emitting sound, and the sound emitting surface is disposed opposite to the sound emitting surface; the opening edge of the rear cavity is provided with a connecting member, and the connecting There is a microphone on the piece.
The earphone rear cavity structure according to claim 1, wherein the speaker is further provided with a base matched with the connecting member, the speaker is disposed in the base, and the base is mounted on the connection On the piece.
The earphone rear cavity structure according to claim 2, wherein a first sealing member for sealing a gap between the mounting position and the base is provided on a side of the mounting position.
The earphone rear cavity structure according to claim 1, wherein said mounting position is provided with a second sealing member for sealing a gap between the mounting position and said speaker.
The earphone rear cavity structure according to claim 2, wherein the base is provided with a third sealing member for sealing a gap between the connecting member and the base.
The earphone back cavity structure according to claim 1, wherein the rear cavity is provided with a PCBA.
The earphone rear cavity structure according to claim 1, wherein the rear cavity is provided with an air guiding tube for discharging the airflow in the front cavity of the earphone.
The earphone rear cavity structure according to claim 2, wherein the base and the rear cavity are fixedly connected by a fastener.
The earphone rear cavity structure according to claim 2, wherein the base is mounted on the connecting member by a fastener, and the connecting member is fixedly coupled to the ear shell by a fastener.
The earphone rear cavity structure according to claim 2, wherein the rear cavity is further provided with a positioning position.
The earphone back cavity structure according to claim 2, wherein the base is provided with a bone position for pressing the speaker.
The earphone rear cavity structure according to claim 2, wherein the connecting member has a tuning hole in the surrounding bone.
The earphone rear cavity structure is characterized in that: an ear shell having a rear cavity is provided, and the rear cavity is provided with: a mounting position for placing a speaker, and the mounting position is provided with a speaker surface for transmitting the sound of the speaker, The speaker is disposed at a mounting position, the speaker has a sound emitting surface for emitting sound, and the sound emitting surface is disposed opposite to the sound emitting surface; the opening edge of the rear cavity is provided with a connecting member, and the connecting a microphone is disposed on the speaker; the speaker is further provided with a base matched with the connecting member, the speaker is disposed in the base, the base is mounted on the connecting member; Providing a first seal for sealing a gap between the mounting position and the base; the mounting position is provided with a second seal for sealing a gap between the mounting position and the speaker; A third seal for sealing a gap between the connector and the base is provided on the base.
The earphone back cavity structure according to claim 13, wherein the rear cavity is provided with an air guiding tube for discharging the airflow in the front cavity of the earphone.
The earphone back cavity structure according to claim 14, wherein the base is provided with a bone position for pressing the speaker.