CN207802268U - A kind of ear defenders - Google Patents

Abstract

The utility model discloses a kind of ear defenders, including top news, the loudspeaker of the shell at the top both ends, rear chamber lid and setting in the rear in chamber lid are set, chamber lid is the horizontal bowl structure in the shell after described, and the opening direction of the rear chamber lid is consistent with the opening direction of the shell, the madial wall of the bowl bottom and the shell of the rear chamber lid is fixed.The ear defenders of the utility model, by the way that the bottom of rear chamber lid is fixed in shell, avoid that the fixed form using mounting plate brings the problem of housing cavity is separated, therefore this programme can all efficiently use in entire enclosure interior space, earphone system resonant frequency can be reduced, the protective capacities to low-frequency noise is improved, passive sound-insulation capability is enhanced.

Description

A kind of ear defenders

Technical field

The utility model is related to a kind of earphones, specifically, being to be related to a kind of ear defenders.

Background technology

In earphone in strong noise guard technology, traditional ear defenders more options heaviness and large-sized protection ear shield can be with The effective noise for separating low frequency, but the rear chamber lid of horn component is fixed on the shell of protection ear shield using vertically arranged partition board In vivo, partition board extends outwardly from the oral area of rear chamber lid in one circumferential direction, until the inner wall of shell and fixed with the inner wall of shell, Enclosure interior space barrier is mutual disconnected ante-chamber and back cavity two parts by partition board, and ante-chamber is between partition board and the oral area of shell Space, space of the back cavity between partition board and the bottom of shell, horn component generate sound can only be conducted in ante-chamber, And back cavity can not be utilized, therefore, partition board reduces the utilization rate in enclosure interior space, and the resonant frequency of lifting system influences The low-frequency noise of earphone is protected, and back cavity acoustic holes are opened in the bottom of shell at present, and back cavity acoustic holes are by external with rear chamber lid Inner cavity connection, outside noise can be made to leak into the interior intracavitary of rear chamber lid, further influence be located at back cavity cover cavity in earphone For the protective capacities of noise.

Invention content

The utility model is in order to solve the technical problem of existing earphone low-frequency noise protection effect difference, it is proposed that a kind of earflap Device can solve the above problems.

In order to solve the above-mentioned technical problem, the utility model is achieved using following technical scheme：

A kind of ear defenders, including top news, the shell at the top both ends, rear chamber lid and setting chamber in the rear are set Loudspeaker in lid, the rear chamber lid is the horizontal bowl structure in the shell, is opened up on the medial surface of the shell useful In ear to be housed in interior oral area, the oral area of the rim of a bowl portion towards the shell of the rear chamber lid is arranged, and the rear chamber lid The madial wall of bowl bottom and the shell fix.

Further, the madial wall of the bowl bottom and the shell of the rear chamber lid is adhesively fixed

Further, back chamber sound aperture is offered on the side wall of the rear chamber lid, the back chamber sound aperture is through-hole.

Further, the oral area sealed set of the rear chamber lid has loudspeaker mounting plate, the loudspeaker to be fixed on the loudspeaker On the madial wall of mounting plate.

Further, the oral area of the rear chamber lid has the outer circumferentially extended to it, the outer and the shell Inner wall abuts against fixation.

Further, several through holes are offered on the outer.

Further, the oral area of chamber lid is formed at least one connecting bar after described, and the connecting bar is to after described The outer circumferentially extending of chamber lid, and abut against fixation with the inner wall of the shell.

Further, the oral area of the shell is installed with ear muff.

Further, it is fixed with feedforward microphone on the madial wall of the shell.

Further, feedback microphones are fixed on the lateral wall of the loudspeaker mounting plate.

Compared with prior art, the advantages of the utility model and good effect is：The ear defenders of the utility model, pass through by The bottom of chamber lid and the inner wall of shell are fixed afterwards, and the oral area of rear chamber lid vacantly in shell, avoids conventionally employed positioned at back cavity The partition board of the oral area circumferential direction of lid is fixed in the fixed form in shell, thus can cause to avoid use partition board will be in shell Chamber is separated into two parts and the problem of only a portion can be used for conducting sound, therefore this programme can be by entire shell Inner space all efficiently uses, and can reduce earphone system resonant frequency, improves the protective capacities to low-frequency noise, and enhancing is passive Sound-insulation capability.

After the detailed description of the utility model embodiment is read in conjunction with the figure, other features and advantages of the utility model It will become clearer.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is a kind of example structure schematic diagram for the ear defenders that the utility model is proposed；

Fig. 2 is the partial structural diagram of Fig. 1；

Fig. 3 is the partial structural diagram of the yet another approach for the ear defenders that the utility model is proposed.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

It is fixed using partition board for rear chamber lid in current ear defenders, causes partition board that can greatly occupy effectively empty in earphone Between, the resonant frequency of lifting system, influence earphone low-frequency noise protection the problem of, the utility model proposes a kind of earflaps Device avoids fixing using partition board by the fixed form of chamber lid after change, and then can be occupied to avoid partition board effectively empty in earphone Between, the resonant frequency of lifting system, will be carried out detailed at the problem of influencing the low-frequency noise protection of earphone with a specific embodiment below Describe bright this programme in detail.

Embodiment one, the present embodiment propose a kind of ear defenders, as shown in Figure 1, including top news 11, setting 11 liang top Shell 12, rear chamber lid 13 and the loudspeaker 14 being arranged in rear chamber lid 13 at end, rear chamber lid 13 are the horizontal bowl in shell 12 Shape structure, and the opening direction of rear chamber lid 13 is consistent with the opening direction of shell 12, bowl bottom and the shell 12 of rear chamber lid 13 Madial wall is fixed.That is, since rear chamber lid 13 is horizontally installed in shell 12, bottom is vertically arranged, this programme profit With the bottom of rear chamber lid, its bottom is fitted closely into the madial wall of shell 12 and is fixed, traditional partition board is not used Fixed form, and then what can be brought to avoid the fixed form using mounting plate is split into two-part ask by housing cavity separation Topic, therefore this programme can all efficiently use in entire enclosure interior space, can reduce earphone system resonant frequency, raising pair The protective capacities of low-frequency noise enhances passive sound-insulation capability.

Since shell 12 makes respectively with rear chamber lid 13 in production, then the two is assembled and is fixed, is assembled for convenience It is fixed, it is preferred to use the mode that the bowl bottom of rear chamber lid 13 and the madial wall of shell 12 are adhesively fixed, certainly, the utility model is not It is limited to by the way of being adhesively fixed, can also uses and such as be welded and fixed, connect and fix fixed form, it is new to belong to this practicality The protection domain of type.

In order to improve music effect, the sound for enabling to the inside of rear chamber lid 13 and sound of its outside carry out mixing sound, It is preferred that offer back chamber sound aperture 15 in rear chamber lid 13, which is through-hole, after capable of penetrating through the inside of chamber lid 13 with Outside, and then the sound of the inside of chamber lid 13 carries out mixing sound with its external sound after capable of realizing, in order to prevent outside shell 12 The noise in portion is opened in by back chamber sound aperture 15, back chamber sound aperture 15 on the side wall of rear chamber lid 13, and therefore, back chamber sound aperture 15 can incite somebody to action The inside of chamber lid 13 is connected to the inner space of earphone body afterwards, remains able to play the role of certain mixing sound, moreover, the back cavity sound Hole 15 is not connected to outside, be ensure that external noise does not enter within earphone, will not be introduced external noise.

Loudspeaker 14 are the core pronunciation devices of earphone, are fixed in rear chamber lid 13, for making a sound, are using earphone When, earphone is worn on head by user, and human ear is located in the oral area of earphone outer covering, in order to ensure sound effect, loudspeaker 14 should not be apart from earphone outer covering oral area it is too far, cause sound loss big, in the oral area sealed set of rear chamber lid 13 in this programme There are loudspeaker mounting plate 16, loudspeaker 14 to be fixed on the madial wall of loudspeaker mounting plate 16, and the oral area of loudspeaker 14 is towards earphone outer covering Oral area, answered convenient for human ear.

For the fixed stability in shell 12 of chamber lid 13 after improving, prevent it from falling off from the madial wall of shell 12, As shown in Fig. 2, the oral area of rear chamber lid 13 has an outer 17 circumferentially extended to it, the inner wall of outer 17 and shell 12 abuts against solid It is fixed.The space in shell 12 is separated by outer 17 in order to prevent, is reduced the useful space in earphone, is preferably opened on outer 17 Equipped with several through holes 18, therefore, the space of 17 both sides of outer still maintains connection namely outer 17 will not be in shell 12 Space carry out closed separation, can conduct sound in the entire inner cavity of shell 12, and then improve enclosure interior space Utilization rate.

Other than chamber lid 13 after the reinforcement of use outer 17 and 12 fixed scheme of shell, as shown in figure 3, can also use It is formed at least one connecting bar 19 in the oral area of rear chamber lid 13, the outer circumferentially extending of the chamber lid 13 backward of connecting bar 19, and And abut against fixation with the inner wall of shell 12.This programme by the way of connecting bar, will not cause by space in shell into The technical issues of going and divide, reducing its useful space.

In order to improve stickiness when earphone is worn and around human body ear, prevent that there are gaps to enter external noise, together When in order to improve the comfort of wearing, the oral area of shell 12 is installed with ear muff 20, and ear muff 20 preferably uses flexible material to realize.

Feedforward microphone 21 is fixed on the madial wall of shell 12.

Feedback microphones 22 are fixed on the lateral wall of loudspeaker mounting plate 16.

Certainly, the above description is not intended to limit the present invention, and the utility model is also not limited to the example above, The variations, modifications, additions or substitutions that those skilled in the art are made in the essential scope of the utility model, It should also belong to the protection scope of the utility model.

Claims (10)

1. a kind of ear defenders, including top news, shell, rear chamber lid and setting chamber lid in the rear at the top both ends is set In loudspeaker, it is characterised in that：Chamber lid is the horizontal bowl structure in the shell after described, on the medial surface of the shell It offers for ear to be housed in interior oral area, the oral area of the rim of a bowl portion towards the shell of the rear chamber lid is arranged, and institute The madial wall for stating the bowl bottom and the shell of rear chamber lid is fixed.

2. ear defenders according to claim 1, it is characterised in that：The inside of the bowl bottom and the shell of chamber lid after described Wall is adhesively fixed.

3. ear defenders according to claim 1, it is characterised in that：Back chamber sound aperture is offered on the side wall of chamber lid after described, The back chamber sound aperture is through-hole.

4. according to claim 1-3 any one of them ear defenders, it is characterised in that：There is the oral area sealed set of chamber lid after described Loudspeaker mounting plate, the loudspeaker are fixed on the madial wall of the loudspeaker mounting plate.

5. ear defenders according to claim 4, it is characterised in that：The oral area of chamber lid has to its circumferentially extending after described Outer, the outer and the inner wall of the shell abut against fixation.

6. ear defenders according to claim 5, it is characterised in that：Several through holes are offered on the outer.

7. according to claim 1-3 any one of them ear defenders, it is characterised in that：The oral area of chamber lid is formed at least after described One connecting bar, outer circumferentially extending of the connecting bar to the rear chamber lid, and abutted against with the inner wall of the shell It is fixed.

8. according to claim 1-3 any one of them ear defenders, it is characterised in that：The oral area of the shell is installed with ear muff.

9. according to claim 1-3 any one of them ear defenders, it is characterised in that：Before being fixed on the madial wall of the shell Present microphone.

10. ear defenders according to claim 4, it is characterised in that：It is fixed on the lateral wall of the loudspeaker mounting plate anti- Present microphone.