CN212677357U

CN212677357U - Earplug and noise reduction earphone

Info

Publication number: CN212677357U
Application number: CN202021779244.1U
Authority: CN
Inventors: 韩立吉; 张连鹏; 田海林; 李铎; 苗成涛; 尚越
Original assignee: Goertek Techology Co Ltd
Current assignee: Goertek Techology Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-03-09
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses an earplug and noise reduction earphone, the earplug includes: an earplug body having a cylindrical structure; a flash extending rearwardly and outwardly along a front end edge of the earplug body; the flash has first hollow area and encloses the overlap cover of establishing in the first hollow area outside. The hollow structure of the flash is beneficial to deformation of the flash, and the flash can be attached to the auditory canal more flexibly, comfortably and tightly; according to the acoustic principle, when a sound propagation path needs to pass through two different media, especially when the density difference of the two media is large, most of sound can be reflected back to the original medium at the critical surface of the two media, and the sound energy transmitted to the second medium is greatly reduced; therefore, the hollow structure of the flash plays a role in reducing noise, so that the hollow structure plays a role in attenuating external noise.

Description

Earplug and noise reduction earphone

Technical Field

The utility model belongs to the technical field of the earphone, concretely relates to earplug and have earphone of making an uproar of falling of this earplug.

Background

The noise reduction earphone is designed according to the following concept: the feedforward microphone is responsible for gathering the noise signal in the duct and carries to the controller, the controller to its operation and to loudspeaker transmission and noise signal phase difference 180 inverted signal, the inverted signal of loudspeaker reduction will offset with the noise, thereby for the less environment of human ear's noise that provides, the effect of earplug is the isolation external noise in whole noise reduction system, for noise reduction system provides good passive noise reduction volume, also provide the enclosure space for the feedforward microphone simultaneously, avoid too much external noise to pass to the duct as far as possible.

The design of making an uproar earphone falls and the volume of making an uproar of falling of laboratory measurement all design under earplug and the inseparable laminating condition of duct and take into account the measuring, acquiescence earplug has good laminating with the duct, however in the actual in-process of wearing, especially when the motion, the earplug is not hard up easily, will reach the duct when the earplug is not hard up back external noise, whole noise reduction system's noise reduction effect will be discounted greatly, can lead to opposite noise reduction effect even, sound distortion, cause the discomfort of hearing, it worsens to fall the experience of making an uproar.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to foretell problem among the prior art, provide an earplug, can effectively increase earplug and duct laminating compliance, the travelling comfort, the laminating is inseparabler, and gives sound insulation the effect better.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:

an earplug, comprising:

an earplug body having a cylindrical structure;

a flash extending rearwardly and outwardly along a front end edge of the earplug body;

the flash has first hollow area and encloses the overlap cover of establishing in the first hollow area outside.

Furthermore, a second hollow area which extends axially is arranged in the cavity wall of the earplug body, and the second hollow area is of a cylindrical structure.

Furthermore, a hollow connecting area which is bent outwards and extends along the front end of the second hollow area is arranged in the cavity wall of the earplug body, and the outer end of the hollow connecting area is communicated with the first hollow area.

Furthermore, the ratio of the wall thickness of the earplug body to the thickness of the second hollow area is 2-3.

Further, the rear end face of the earplug body is flush with the rear end face of the flash.

Further, the thickness of the flash is less than the wall thickness of the earplug body.

Furthermore, an installation clamping groove is formed in the inner end face of the earplug body and is far away from the first end face of the axis of the earplug body, and the first end face is provided with an inclined portion which inclines outwards in the backward direction and an extending portion which extends backwards along the axial direction of the rear end of the inclined portion.

Furthermore, the installation clamping groove and the second hollow area are arranged at intervals, and the second hollow area is located in front of the installation clamping groove.

Furthermore, the ratio of the outer diameter to the inner diameter of the earplug body is 1.4-1.6.

Further, the ratio of the thickness of the flash to the thickness of the first hollow area is 1.4-1.7.

Further, the first hollow area is filled with a sound insulating material.

Based on foretell earplug, the utility model discloses still provide an earphone of making an uproar falls, can effectively increase earplug and duct laminating compliance, the travelling comfort, the laminating is inseparabler, and the effect that gives sound insulation is better.

A noise reduction earphone comprises an earphone body and the earplug, wherein the earplug is sleeved at the front end of the earphone body.

Compared with the prior art, the utility model discloses an advantage is with positive effect: the hollow structure of the flash is beneficial to deformation of the flash, and the flash can be attached to the auditory canal more flexibly, comfortably and tightly; according to the acoustic principle, when a sound propagation path needs to pass through two different media, especially when the density difference of the two media is large, most of sound can be reflected back to the original medium at the critical surface of the two media, and the sound energy transmitted to the second medium is greatly reduced; therefore, the hollow structure of the flash plays a role in reducing noise, so that the hollow structure plays a role in attenuating external noise.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of a first embodiment of an earplug according to the present invention;

FIG. 2 is an enlarged schematic view of region A in FIG. 1;

FIG. 3 is an enlarged view of a portion of the flash of FIG. 1;

fig. 4 is a schematic view of a second embodiment of the earplug according to the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

In the description of the present invention, it is to be noted that the term "in" is taken in the direction close to the axis of the earplug, and "out" is taken on the contrary; the axial direction of the earplug is the front-back direction, and the end of the earplug far away from the earphone body is used as the front, otherwise, the end is used as the back. The terminology is for the purpose of describing the invention only and is not intended to be limiting of the invention since it is not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, which are first exemplary embodiments of the earplug of the present invention, an earplug 10 is provided for being mounted at a front end of an in-ear earphone body, and the earplug 10 is in contact with an ear canal of a user after the earphone is worn. The earplug 10 is of a gel material, preferably provided as a silicone material.

The earplug 10 includes: the earplug body 11 is a cylindrical structure with openings at the front end and the rear end, and the earplug body 11 is a cylindrical tube, namely the radial dimension of the earplug body 11 in the front-rear direction is unchanged; the flash 12 extends backwards and outwards in an arc shape along the edge of the front end of the earplug body 11, and the flash 12 is of a reducing cylindrical structure; the flash 12 has a first hollow area 121 and a flash sleeve 122 surrounding the first hollow area 121, that is, the flash 12 has a hollow structure, or the flash 12 has the first hollow area 121 surrounded by the hollow flash sleeve and the flash sleeve 122. The hollow structure of the flash 12 is beneficial to the deformation of the flash 12, and the flash 12 can be attached to the auditory canal more flexibly, comfortably and tightly; according to the acoustic principle, when a sound propagation path needs to pass through two different media, especially when the density difference of the two media is large, most of sound can be reflected back to the original medium at the critical surface of the two media, and the sound energy transmitted to the second medium is greatly reduced; therefore, the hollow structure of the flash 12, the first hollow area 121 is filled with air, and the flash sleeve 122 is made of silica gel, rubber, or other elastic material, so as to reduce noise and attenuate external noise.

A second hollow area 111 extending axially is provided in the cavity wall of the earplug body 11, and the second hollow area 111 is a cylindrical structure disposed coaxially with the earplug body 11. By providing the second hollow region 111, the noise reduction effect of the earplug 10 is further enhanced. The cavity wall of the earplug body 11 is a part between the outer diameter and the inner diameter of the earplug body 11, and the ratio of the outer diameter to the inner diameter of the earplug body 11 is 1.4-1.6. The ratio of the wall thickness D1 of the earplug body 11 to the thickness D1 of the second hollow area 111 is 2-3, so that the earplug body 11 is guaranteed to have enough supporting force; the wall thickness of the earplug body 11 is the thickness of the cavity wall of the earplug body 11, that is, the radial dimension of the earplug body 11; the thickness d1 of the second hollow zone 111 is also a radial dimension.

A hollow connecting region 112 extending along the front end of the second hollow region 111 and bending outwards is arranged in the cavity wall of the earplug body 11, and the outer end of the hollow connecting region 112 is communicated with the first hollow region 121. By providing the hollow connecting region 112 such that the first hollow region 121 and the second hollow region 111 communicate with each other, air in the first hollow region 121, the connecting region 112, and the second hollow region 111 can flow inside, and the hollow region formed by the communication of the first hollow region 121, the connecting region 112, and the second hollow region 111 is a sealed cavity; after the flash 12 is extruded, the outer end of the flash sleeve 122 deforms inwards to narrow the dimension of the pressed part of the first hollow area 121, so that air flows, the air pressure in the sealed cavity is increased, and the pressure bearing capacity of the flash 12 is increased; the entire flash 12 then moves inwardly together to deform. Preferably, the ratio of the thickness D2 of the flash 12 to the thickness D2 of the first hollow area 121 is 1.4-1.7.

The thickness D2 of the flash 12 is smaller than the wall thickness D1 of the earplug body 11, the axial section of the flash 12 is arc-shaped, and the thickness of the flash 12 is the radial size of the arc; the earplug body 11 mainly has a supporting function, and the flash 12 has a deforming function.

An installation clamping groove 113 is formed on the inner end surface of the earplug body 11 for installing the earplug 10 on the earphone body, and the earplug 10 is sleeved on the earphone body from front to back. In order to prevent the earplug 10 from falling off, the mounting slot 113 is away from the first slot surface 1131 of the axis of the earplug body 11, and the first end surface 1131 has an inclined portion 11311 inclined outward in the backward direction and an extending portion 11312 extending axially backward along the rear end of the inclined portion 11311, which is beneficial for improving the firmness of the earplug 10 after mounting and preventing the earplug 10 from falling off; make the radial dimension of the back groove face 1132 of the installation card slot 113 be greater than the radial dimension of the front groove face 1133, the back groove face 1132 and the front groove face 1133 are all set up radially, and when the earplug 10 received forward pulling force, the effort between earplug 10 and the earphone body was on the back groove face 1132.

The mounting slot 113 and the second hollow region 111 are both disposed on the earplug body 11, the mounting slot 113 and the second hollow region 111 are disposed at an interval, and the second hollow region 111 is located in front of the mounting slot 113. The rear end face of the earplug body 11 is flush with the rear end face of the flange 12, that is, the rear end face of the earplug body 11 and the rear end face of the flange 12 are located in the same plane.

Referring to fig. 4, a second embodiment of the earplug is proposed, which mainly differs from the first embodiment in that: the hollow space is filled with a sound insulating material, and the same structure as that of the first embodiment may be adopted.

The earplug 20 includes: the earplug body 21 is a cylindrical structure with openings at the front end and the rear end, and the earplug body 21 is a cylindrical tube, namely the radial dimension of the earplug body 21 in the front-rear direction is unchanged; the flash 22 extends backwards and outwards in an arc shape along the edge of the front end of the earplug body 21, and the flash 22 is of a reducing cylindrical structure; the flash 22 has a first hollow area 221 and a flash sleeve 222 surrounding the first hollow area 221, that is, the flash 22 has a hollow structure, or the flash 22 has the first hollow area 221 surrounded by the hollow flash sleeve and the flash sleeve 222. The hollow structure of the flash 22 is beneficial to the deformation of the flash 12, and the flash 22 can be attached to the auditory canal more flexibly, comfortably and tightly; according to the acoustic principle, when a sound propagation path needs to pass through two different media, especially when the density difference of the two media is large, most of sound can be reflected back to the original medium at the critical surface of the two media, and the sound energy transmitted to the second medium is greatly reduced; therefore, the hollow structure of the flash 22 can reduce noise, so as to attenuate external noise.

The first hollow area 221 is filled with a sound insulation material, and the connection area 212 and the second hollow area 211 are also filled with a sound insulation material, that is, the hollow area formed by the first hollow area 221, the connection area 212 and the second hollow area 211 communicating with each other is filled with a sound insulation material. The first hollow area 221 is filled with a sound insulation material, so that the sound insulation effect is further improved, and the strength of the flash 22 is improved. For the selection of the sound insulation material, polyurethane sound absorption cotton is preferably arranged; the sound absorbing powder particles can be prepared by sintering zeolite raw powder, and the diameter of the sound absorbing powder is between 100 and 500 mu m.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or that equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention, which is claimed.

Claims

1. An earplug, comprising:

an earplug body having a cylindrical structure;

2. The earplug of claim 1, wherein an axially extending second hollow region is disposed in a cavity wall of the earplug body, the second hollow region being of a cylindrical configuration.

3. The earplug according to claim 2, wherein a hollow connecting region is provided in the cavity wall of the earplug body and extends along the front end of the second hollow region, and the outer end of the hollow connecting region is connected to the first hollow region.

4. The earplug of claim 2, wherein a ratio of a wall thickness of the earplug body to a thickness of the second hollow region is 2-3.

5. The earplug of claim 1 wherein the rear face of the earplug body is flush with the rear face of the flash.

6. The earplug of claim 2 wherein the inner end surface of the earplug body defines a mounting pocket, the mounting pocket being distal from a first end surface of the earplug body axis, the first end surface having an angled portion angled outwardly in a rearward direction and an extension extending axially rearward along a rear end of the angled portion.

7. The earplug of claim 6, wherein the mounting socket is spaced from the second hollow region, the second hollow region being forward of the mounting socket.

8. The earplug of any one of claims 1-7, wherein a ratio of a thickness of the flashing to a thickness of the first hollow region is 1.4-1.7.

9. Earplug according to any of claims 1-7, wherein the first hollow area is filled with a sound insulating material.

10. A noise reduction earphone, comprising an earphone body and the earplug of any one of claims 1 to 9 sleeved on the front end of the earphone body.