CN216600066U

CN216600066U - Speaker and audio output device

Info

Publication number: CN216600066U
Application number: CN202122635567.4U
Authority: CN
Inventors: 贾锋超; 张铁男
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2022-05-24
Anticipated expiration: 2031-10-29

Abstract

The application provides a speaker and a sound output device. This application sets up first through-hole through the first extension at magnetic circuit's third magnetic conductive member, and the first through-hole intercommunication first loses heart hole, and first disappointing hole intercommunication sound output device is outside to the front chamber that makes the speaker can communicate to the outside of earphone through the first through-hole and the first hole that loses heart of first extension. Like this, when the user wore the earphone, the air in the external auditory canal of ear and the front cavity of speaker can be released to external environment through disappointing the passageway to pressure in the rapid balance duct has avoided the uncomfortable problem that the earphone arouses at the in-process of wearing, has also further avoided causing the problem of damage to the user's eardrum.

Description

Speaker and audio output device

Technical Field

The present application relates to the field of electroacoustic technologies, and in particular, to a speaker and a sound output device.

Background

A speaker is an electroacoustic transducer that converts electrical energy into acoustic energy and radiates the acoustic energy to a remote place in the air, and is one of the main components of consumer electronics such as mobile phones, earphones, and the like. Because the structure setting of speaker is unreasonable, the speaker is when being applied to the earphone, and earphone and auricle laminating, acoustic pressure is too big in the duct, leads to easily forming the oppression to the human eardrum, has reduced user experience nature. Therefore, it is desirable to provide a new speaker to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The application provides a speaker and sound output device to solve the technical problem that the uncomfortable sense that the user's ear canal atmospheric pressure improves and arouses when wearing the earphone.

In a first aspect, the present application provides a sound output device. The sound output device includes a housing and a speaker. The loudspeaker is mounted in the inner cavity of the shell. The loudspeaker comprises a frame, a magnetic circuit system and a vibrating diaphragm. The basin stand is fixed on the shell. The magnetic circuit system and the vibrating diaphragm are both connected with the basin frame. The magnetic circuit system is positioned on one side of the diaphragm.

The magnetic circuit system comprises a first magnet, a second magnet, a first magnetic conduction piece, a second magnetic conduction piece and a third magnetic conduction piece. The third magnetic conduction piece comprises a main body part and a first extension part connected to the main body part. The first magnet is fixed between the first magnetic conduction piece and the main body part. The second magnet is fixed between the first magnetic conduction piece and the second magnetic conduction piece. The first magnet and the second magnet are arranged at intervals, and the first magnet surrounds the second magnet. The first extending part fixes the basin stand. The first extending part is provided with a first communicating hole.

The shell is provided with a first air leakage hole. The first air release hole is positioned at one side of the diaphragm close to the magnetic circuit system. The first air release hole is communicated with the outside of the sound output device. The front cavity of the loudspeaker is communicated with the first air release hole through the first communication hole.

In this implementation and each of the following implementations, the description will be made taking an example in which the sound output device is an earphone.

It is understood that the front cavity of the speaker may be communicated to the outside of the earphone through the first communication hole of the first extension part and the first air release hole. Like this, when the user wore the earphone, along with the sound mouth constantly stretches into, the external environment of external auditory canal and speaker's front chamber air can be released to the earphone through first through-hole and first disappointing hole to pressure in the rapid balance duct has avoided the uncomfortable problem that the earphone arouses wearing the in-process, has also further avoided causing the problem of damage to user's eardrum.

In addition, because first hole of disappointing is located the one side that the vibrating diaphragm is close to magnetic circuit to make first hole of disappointing can keep away from the ante-chamber setting of speaker to a great extent, and then avoid first hole of disappointing to a great extent to be sheltered from by the inner wall in earmuff or conch chamber, make first hole of disappointing to the pressure release effect in the ante-chamber of external auditory canal and speaker more stable, also make the acoustic performance of earphone more stable.

In addition, compared with the scheme that the air leakage channel is formed in the basin frame, the strength of the basin frame is lower. When the earphone falls, the basin frame is easy to break, and the stability of the loudspeaker is poor. In the embodiment, the first extending portion of the third magnetic conductive member is provided with the first communicating hole, so that the third magnetic conductive member has high structural strength, so that the frame is not easy to break after the earphone falls, and the stability of the speaker is better.

In addition, the present embodiment uses two magnets (i.e., the first magnet and the second magnet) and the first magnet is disposed around the second magnet, so that the magnetic path system has a large magnetic flux. Therefore, when the voice coil moves along the thickness direction of the loudspeaker under the magnetic field of the magnetic circuit system, the voice coil can generate larger driving force, and at the moment, the sensitivity of the loudspeaker is higher, and the sound quality of the loudspeaker is better. In addition, compared with a single magnetic circuit scheme adopting a magnetic bowl structure, the first magnetic conduction member, the second magnetic conduction member and the third magnetic conduction member of the embodiment have simpler structures and are easy to form in the process.

In addition, the main body part of the third magnetic conduction part is connected with the first extension part, and the first communication hole is arranged on the first extension part, so that the first communication hole is prevented from influencing the magnetic field direction of the magnetic circuit system to a greater extent.

In one possible implementation, the first communication hole communicates with a rear cavity of the speaker. The back cavity of the loudspeaker is communicated with the first air leakage hole. Thus, the front cavity of the loudspeaker can be communicated to the outside of the earphone through the first communicating hole of the first extending part, the rear cavity of the loudspeaker and the first air release hole.

It can be understood that, compared with the scheme that a pipeline is arranged between the first communication hole and the first air release hole, in the embodiment, the air release channel of the front cavity of the external auditory canal and the loudspeaker can directly utilize the rear cavity of the loudspeaker without additionally adding other components, so that the structure of the loudspeaker is simplified, and the release mode is simple.

In addition, the rear cavity of the loudspeaker can be communicated to the outside of the earphone by using the first air release hole. Thus, the first bleed hole is a back bleed hole of the back volume of the speaker. The rear cavity of the loudspeaker is in an open state, so that the equivalent compliance of the rear cavity of the loudspeaker can be improved, and the low-frequency performance of the loudspeaker is improved.

In a possible implementation manner, the basin frame, the magnetic circuit system and the shell enclose a first space. The basin frame, the magnetic circuit system and the vibrating diaphragm enclose a second space. The basin stand is provided with a first rear drainage hole. The first back drain hole communicates the first space and the second space. The rear cavity of the loudspeaker comprises a first space, a second space and a first rear vent hole. The first communication hole is communicated with the first space. The first space is communicated with the first air release hole. Thus, the front cavity of the speaker can be communicated to the outside of the earphone through the first communication hole of the first extension part, the first space of the rear cavity of the speaker and the first air release hole.

It can be understood that the air pressure release channel of the external auditory canal and the front cavity of the loudspeaker can directly utilize the first space of the rear cavity of the loudspeaker without additionally adding other components, thereby simplifying the structure of the loudspeaker and simplifying the pressure release mode.

In one possible implementation, the first back vent hole is disposed adjacent to the first communication hole. The loudspeaker also comprises mesh cloth. The mesh cloth fixes the basin frame and the first extending part of the third magnetic conduction piece. The screen cloth covers the first rear discharge hole and the first communication hole.

It can be understood that the mesh cloth can play certain regulating action to the air acoustic resistance in the front cavity and the back cavity of the loudspeaker, thereby improving the tone quality of the earphone. In addition, compare in through setting up two screen cloths to cover the scheme of first back bleeder hole and first through-hole respectively, this embodiment just can cover first back bleeder hole and first through-hole simultaneously through a screen cloth, thereby can save a screen cloth on the one hand, reduce the cost and drop into, and on the other hand screen cloth, basin frame and first extension are arranged compacter, and the space utilization of speaker is higher.

In a possible implementation manner, an opening of the first rear drain hole in the basin frame and an opening of the first communication hole in the first extension part of the third magnetic conduction member are in the same plane.

In one possible implementation, the loudspeaker further comprises a first duct. The first pipeline is communicated with the first communicating hole and the first air leakage hole.

In a possible realization, the basin stand is provided with a first through hole. A part of the first extension part is positioned in the first through hole, and a part of the first extension part is positioned outside the basin frame. It can be understood that when a part of the first extension part is embedded in the frame, on one hand, the overall strength of the frame can be improved. Therefore, after the earphone falls, the problem that the basin stand falls and is easy to break can be solved, and the connection between the magnetic circuit system and the basin stand is better and stable.

In one possible implementation, the third magnetic conductive member further includes a second extension portion. The second extending part is connected with the main body part and is arranged at intervals with the first extending part. The second extension part is connected with the basin frame. The second extension portion is provided with a second communication hole. The second communication hole communicates with the first communication hole. The basin frame is provided with a second through hole. A part of the second extension part is positioned in the second through hole, and a part of the second extension part is positioned outside the basin frame.

It can be understood that when the second extension part is embedded in the frame, on one hand, the overall strength of the frame can be improved. Therefore, after the earphone falls, the problem that the basin stand falls and is easy to break can be solved, and the connection between the magnetic circuit system and the basin stand is better and stable.

In addition, because the second communication hole is communicated with the first communication hole, air in the external auditory meatus and the front cavity of the loudspeaker can be released to the external environment of the earphone through the second communication hole and the first air release hole.

In a possible realisation, the second communication hole communicates with the first space of the rear chamber of the loudspeaker. At this time, the second communication hole communicates to the first communication hole through the first space of the rear chamber of the speaker. It can be understood that the air in the front cavity of the external auditory canal and the loudspeaker can be released to the external environment of the earphone through the second communication hole, the first space and the first air release hole, so that the pressure in the auditory canal can be quickly balanced, the discomfort problem caused by the earphone in the wearing process can be avoided, and the problem of damage to the eardrum of the user can be further avoided.

In one possible implementation, the first extension fixes the housing. In this way, the connection of the loudspeaker to the housing is more stable. When the earphone falls, the problem that the basin stand falls and is easy to break can be solved.

In one possible realisation, the casing is provided with a second bleed hole. The second air release hole is positioned on one side of the diaphragm, which is far away from the magnetic circuit system. The second air leakage hole is communicated with the front cavity of the loudspeaker and the outside of the sound output device.

In one possible implementation, the speaker includes a voice coil. And one part of the voice coil is fixed with the vibrating diaphragm, one part of the voice coil is positioned in a magnetic gap between the main body part of the third magnetic conductive part and the second magnetic conductive part, and the other part of the voice coil is positioned in a gap between the first magnet and the second magnet.

In one possible implementation, the diaphragm includes a corrugated rim and a dome. The outer periphery of the ball top is fixed with the inner periphery of the folding ring. A portion of the voice coil is fixed to the dome. The speaker includes a steel ring. The steel ring is connected between the basin frame and the outer periphery of the folding ring.

In a possible implementation manner, the diaphragm is far away from the surface of the magnetic circuit system, and the frame and the shell enclose the front cavity of the loudspeaker.

In one possible implementation, the sound output device further comprises a feedforward reference microphone. The feedforward reference microphone is located in the inner cavity of the housing. The feedforward reference microphone is used for collecting noise of the external environment of the sound output device.

The sound output device further includes a signal processing circuit. The signal processing circuit is located in the inner cavity of the shell. The signal processing circuit is used for receiving the noise collected by the feedforward reference microphone and processing the noise to convert the phase of the noise into an opposite phase, and the signal processing circuit is also used for transmitting the noise in the opposite phase to the loudspeaker to enable the loudspeaker to emit sound waves in the opposite phase.

In one possible implementation, the sound output device further comprises a residual noise reference microphone. The residual noise reference microphone is electrically connected to the feedforward reference microphone. And the residual noise reference microphone is used for monitoring the residual signal and feeding the residual signal back to the feedforward reference microphone so that the signal processing circuit continues to perform inverse fitting processing on the residual signal.

In one possible implementation, the sound output device is a headset.

In a second aspect, the present application provides a loudspeaker. The loudspeaker comprises a frame, a magnetic circuit system and a vibrating diaphragm. The magnetic circuit system and the vibrating diaphragm are both connected with the basin frame. The magnetic circuit system is positioned on one side of the diaphragm. The magnetic circuit system comprises a first magnet, a second magnet, a first magnetic conduction member, a second magnetic conduction member and a third magnetic conduction member. The third magnetic conduction piece comprises a main body part and a first extension part connected to the main body part. The first magnet is fixed between the first magnetic conduction piece and the main body part. The second magnet is fixed between the first magnetic conduction piece and the second magnetic conduction piece. The first magnet and the second magnet are arranged at intervals, and the first magnet surrounds the second magnet. The first extending part fixes the basin stand. The first extending part is provided with a first communicating hole. The first communicating hole is used for communicating the front cavity of the loudspeaker to the outside of the sound output device.

It is understood that the front chamber of the speaker may be communicated to the outside of the earphone through the first communication hole of the first extension part. Like this, when the user wore the earphone, along with the sound mouth constantly stretches into, the external environment of external auditory canal and speaker's front chamber air can be released to the earphone through first through-hole and first disappointing hole to pressure in the rapid balance duct has avoided the uncomfortable problem that the earphone arouses wearing the in-process, has also further avoided causing the problem of damage to user's eardrum.

In addition, the present embodiment uses two magnets (i.e., the first magnet and the second magnet), and the first magnet is disposed around the second magnet, so that the magnetic circuit system has a large magnetic flux. Therefore, when the voice coil moves along the thickness direction of the loudspeaker under the magnetic field of the magnetic circuit system, the voice coil can generate larger driving force, and at the moment, the sensitivity of the loudspeaker is higher, and the sound quality of the loudspeaker is better. In addition, compared with a single magnetic circuit scheme adopting a magnetic bowl structure, the first magnetic conduction member, the second magnetic conduction member and the third magnetic conduction member of the embodiment have simpler structures and are easy to form in the process.

In a possible realization, the basin stand is provided with a first through hole. A part of the first extension part is positioned in the first through hole, and a part of the first extension part is positioned outside the basin frame.

It can be understood that when a part of the first extension part is embedded in the frame, on one hand, the overall strength of the frame can be improved. Therefore, after the earphone falls, the problem that the basin stand falls and is easy to break can be solved, and the connection between the magnetic circuit system and the basin stand is better and stable.

In one possible implementation, the basin stand is provided with a first rear drain hole. The first rear vent hole is communicated with the inner cavity of the loudspeaker and the outside of the loudspeaker. The internal cavity of the speaker may be part of the back cavity of the speaker.

It will be appreciated that the interior cavity of the speaker may also be connected to the exterior of the speaker by a first vent hole. Therefore, the rear cavity of the loudspeaker can be in an open state, the equivalent compliance of the rear cavity of the loudspeaker can be improved, and the low-frequency performance of the loudspeaker is improved.

It can be understood that the mesh cloth can play certain regulating action to the air acoustic resistance in the front chamber and the back chamber of speaker to the tone quality of earphone has been improved. In addition, compare in through setting up two screen cloths to cover the scheme of first back bleeder hole and first through-hole respectively, this embodiment just can cover first back bleeder hole and first through-hole simultaneously through a screen cloth, thereby can save a screen cloth on the one hand, reduce the cost and drop into, and on the other hand screen cloth, basin frame and first extension are arranged compacter, and the space utilization of speaker is higher.

In one possible implementation, the diaphragm includes a corrugated rim and a dome. The outer periphery of the ball top is fixed with the inner periphery of the folding ring. The outer periphery of the folding ring is fixed with the basin frame. The speaker includes a voice coil. One part of the voice coil is fixed on the ball top, and the other part of the voice coil is positioned in a magnetic gap between the main body part of the third magnetic conduction piece and the second magnetic conduction piece.

In one possible implementation, the speaker includes a steel ring. The steel ring is connected between the basin frame and the outer periphery of the folding ring.

In one possible implementation, the magnetic pole direction of the first magnet is opposite to the magnetic pole direction of the second magnet.

Drawings

Fig. 1 is a schematic partial structural diagram of an audio output device provided in an embodiment of the present application;

FIG. 2 is a partially exploded schematic view of the sound output device shown in FIG. 1;

FIG. 3 is a schematic, partially cross-sectional view of the acoustic output device of FIG. 1;

FIG. 4 is a schematic view of the front housing shown in FIG. 2 at another angle;

FIG. 5 is a partially exploded schematic view of the loudspeaker shown in FIG. 2;

FIG. 6 is a schematic view of the basin stand of FIG. 5 at a different angle;

FIG. 7 is a schematic view of the basin stand of FIG. 5 at another angle;

fig. 8 is an exploded view of the magnetic circuit system shown in fig. 5;

fig. 9 is a cross-sectional schematic view of the magnetic circuit system shown in fig. 5;

figure 10 is a schematic partial cross-sectional view of the loudspeaker shown in figure 2;

FIG. 11 is a schematic view of a portion of the speaker of FIG. 2 at another angle;

figure 12 is a schematic partial cross-sectional view of the loudspeaker shown in figure 2;

FIG. 13 is a schematic, partially cross-sectional view of the acoustic output device of FIG. 1;

fig. 14 is a schematic partial cross-sectional view of the acoustic output device shown in fig. 1;

FIG. 15 is a schematic diagram of a portion of another embodiment of the loudspeaker shown in FIG. 2;

figure 16 is a schematic partial cross-sectional view of the loudspeaker shown in figure 15;

FIG. 17 is a schematic, partially cross-sectional view of another embodiment of the acoustic output device shown in FIG. 1;

fig. 18 is a schematic partial cross-sectional view of yet another embodiment of the acoustic output device shown in fig. 1.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "mounted" are to be interpreted broadly, unless explicitly stated or limited otherwise, and for example, "connected" may or may not be detachably connected; may be directly connected or indirectly connected through an intermediate. Further, "communication" may be direct communication or indirect communication through an intermediary. The term "fixed" means that they are connected to each other and the relative positional relationship after the connection is not changed. The directional terms used in the embodiments of the present application, such as "inner", "outer", "top", "bottom", and the like, are used solely in the orientation with reference to the drawings, and thus, are used for better and clearer illustration and understanding of the embodiments of the present application, rather than 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, and thus should not be considered limiting of the embodiments of the present application.

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the embodiment of the present application, "and/or" is only one kind of association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.

Referring to fig. 1, fig. 1 is a schematic partial structure diagram of an audio output device 100 according to an embodiment of the present disclosure. The sound output device 100 is used for sound output. Such as playing music, playing voice messages, or talking. The sound output apparatus 100 may be a headphone, a player, or the like. The sound output device 100 of the embodiment shown in fig. 1 is illustrated by taking an earphone as an example. The reference numerals of the earphones are the reference numerals of the sound output device 100.

In the present embodiment, the headset 100 may be a wireless headset or a wired headset. When the headset 100 is a wireless headset, the headset 100 may be communicatively coupled to other electronic devices. The other electronic devices may be a headset, a mobile phone, a watch, a tablet personal computer (tablet personal computer), a notebook computer, an in-vehicle device, a wearable device, Augmented Reality (AR) glasses, an AR helmet, Virtual Reality (VR) glasses, a VR helmet, and other devices having a communication function. The headset 100 of the embodiment shown in fig. 1 is a wireless headset, such as a bluetooth headset, and in one embodiment, the headset 100 is a TWS (true wireless stereo) headset. It should be noted that fig. 1 only schematically shows one earphone 100 (i.e., the earphone 100 includes at least one earplug). In other embodiments, the headset 100 may also include two earplugs, or more than two earplugs, wherein the two earplugs provide sound to the left ear or the right ear, respectively.

The earphone 100 may be a half-in-ear earphone, an in-ear earphone, or a headphone.

Referring to fig. 2 in conjunction with fig. 1, fig. 2 is a partially exploded view of the audio output device 100 shown in fig. 1. The headset 100 may include a housing 10 (also referred to as a headset housing), a speaker 20 (also referred to as a sound emitting unit or sound emitting cell), an earcap holder 30, and an earcap 40. It should be noted that fig. 1, fig. 2 and the following drawings only schematically show some components, and the actual shapes and actual sizes of the components are not limited by fig. 1, fig. 2 and the following drawings. In other embodiments, the headset 100 may also include more or fewer components, for example, in some embodiments, the headset 100 may not include the earcap holder 30 and/or the earcap 40.

In the present embodiment, the headphone 100 employs a speaker structure. Speaker 20 is a moving coil speaker. The moving coil loudspeaker can be a loudspeaker which utilizes the electromagnetic induction principle, and when the moving coil loudspeaker is electrified, the voice coil is acted by ampere force in a magnetic field to drive the vibrating diaphragm to vibrate to generate sound. In particular, it will be described in detail hereinafter with reference to the accompanying drawings.

In other embodiments, the headset 100 may also be configured with two speakers or more than two speakers. When the earphone 100 employs two speakers or more than two speakers, the same kind of speakers may be employed, or different kinds of speakers may be employed. For example, when the headset 100 employs different kinds of speakers, the headset 100 may include a moving coil speaker and a micro-electro-mechanical systems (MEMS) speaker. The MEMS speaker may be a piezoelectric speaker fabricated using MEMS technology. Thus, the headset 100 has advantages at low, medium and high frequencies, and the headset 100 may enable a user to experience better sound quality.

Referring to fig. 3 in conjunction with fig. 2, fig. 3 is a partial cross-sectional view of the audio output device 100 shown in fig. 1. The housing 10 includes a front case 11 and a rear case 12. The front case 11 fixes the rear case 12. Illustratively, the front shell 11 may be fastened to the rear shell 12 by means of a snap fit or an adhesive. It is understood that the front shell 11 and the rear shell 12 may form an ear cup. When the earphone 100 is worn on the ear, the front shell 11 and the rear shell 12 may be placed in the concha cavity of the ear, or a portion of the front shell 11 and the rear shell 12 may be placed in the concha cavity of the ear, and another portion of the front shell 11 extends into the external auditory canal of the ear. At this time, a part of the outer surface of the front shell 11 may contact the inner wall of the external auditory canal, thereby having an isolation effect on noise, so that the user experience is better.

In this embodiment, the front case 11 and the rear case 12 may enclose an inner cavity of the earphone 100. The interior cavity of the headset 100 may also be used to house components such as power supplies, signal processing circuitry (e.g., filters), etc.

Referring again to fig. 2 and 3, housing 10 may be provided with a mouthpiece 111, for example, front shell 11 is provided with mouthpiece 111. The sound outlet 111 communicates the inner cavity of the casing 10 to the outside of the casing 10. When the earphone 100 is worn on the ear, the sound outlet 111 may be aligned with or extend into the external auditory canal of the ear, and sound waves emitted from the earphone 100 may be transmitted into the external auditory canal of the ear through the sound outlet 111.

In addition, the front case 11 is provided with a first air release hole 112. The first air release hole 112 is spaced apart from the mouthpiece 111. The first relief hole 112 may communicate the inner cavity of the housing 10 to the outside of the housing 10. In other embodiments, the location of the first bleed hole 112 is not specifically limited. The function of the first air release hole 112 will be described in detail below with reference to the accompanying drawings, and will not be described in detail herein.

Referring to fig. 4 in conjunction with fig. 3, fig. 4 is a schematic structural view of the front housing 11 shown in fig. 2 at another angle. The front housing 11 is further provided with a second air release hole 113. The second air release holes 113 are arranged at intervals with the sound outlet mouth 111 and the first air release holes 112. The second relief hole 113 is disposed adjacent to the mouthpiece 111 with respect to the first relief hole 112. The second relief hole 113 may communicate the inner cavity of the housing 10 to the outside of the housing 10. In other embodiments, the location of the second relief hole 113 is not particularly limited. For example, the second relief hole 113 may also be provided in the rear case 12. The function of the second air release hole 113 will be described in detail below with reference to the related drawings, and will not be described in detail here.

Referring to fig. 4 and 2, the front housing 11 is further provided with a mounting groove 114. Illustratively, the mounting slot 114 is annular in shape. The mounting groove 114 is provided around the mouthpiece 111. In other embodiments, the front case 11 may not be provided with the mounting groove 114.

In other embodiments, the housing 10 may have other configurations. For example, the rear housing 12 may also include ear stems (not shown) and a convex hull (not shown). The front shell 11 fixes the convex hull of the rear shell 12. The convex hulls of the front and

rear shells

11, 12 may form the ear shells of the headset 100. It will be appreciated that the ear stem of the rear housing 12 may be placed outside the concha cavity for easy access by the user. The present application is not limited with respect to the specific structure of the housing 10.

Referring to fig. 3 again in conjunction with fig. 2, the ear cap holder 30 is fixed to the front housing 11 and disposed around the sound outlet 111. Illustratively, a portion of the earmuff bracket 30 is disposed within the mounting slot 114. Thus, the area of connection between the earcap holder 30 and the front housing 11 is large, and the connection between the earcap holder 30 and the front housing 11 is firm.

In addition, the ear loops 40 are fixed to the ear loop holder 30 and surround the ear loop holder 30. When sound outlet 111 stretches into the external auditory canal, at least part of ear cover 40 can stretch into the external auditory canal, and ear cover 40 can have good leakproofness to the external auditory canal, therefore has fine isolation effect to the noise for user experience feels better. Illustratively, the ear loops 40 may be made of a soft material, such as rubber. When the ear muff 40 is stretched into the external auditory canal, the ear muff 40 can contact with the inner wall of the external auditory canal, etc., and deform to reduce the pressure applied to the inner wall of the external auditory canal, so that the user feels comfortable when wearing the earphone 100, thereby improving the user experience of the user. In other embodiments, when the housing 10 does not include the ear cap holder 30, the ear cap 40 may be fixed to the front case 11 and surround the sound outlet mouth 111.

The structure of the housing 10 is described above in detail with reference to the related drawings, and the structure of the speaker will be described below in detail with reference to the related drawings.

Referring to fig. 5, fig. 5 is a partially exploded view of the speaker 20 shown in fig. 2. The speaker 20 includes a frame 21, a magnetic circuit 22, a voice coil 23, a steel ring 24, a corrugated rim 25, and a dome 26. It is understood that the edge 25 and the dome 26 of the present embodiment constitute a diaphragm 27 of the speaker 20. In other embodiments, the diaphragm 27 of the speaker 20 may have other structures. And particularly can be flexibly set according to requirements.

In other embodiments, speaker 20 may also include more or fewer components, for example, in some embodiments, speaker 20 may not include steel ring 24. For example, in some embodiments, speaker 20 may also include a damper.

Referring to fig. 6, fig. 6 is a schematic structural view of the basin stand 21 shown in fig. 5 at different angles. The frame 21 includes a body portion 21a, a first projection 21b, and a second projection 21 c.

The body 21a may have a ring shape. The main body 21a includes an inner peripheral side surface 211 and an outer peripheral side surface 212 facing opposite directions. The first convex portion 21b and the second convex portion 21c may be provided to protrude from the outer circumferential side surface 212.

The main body 21a has a first rear drain hole 213 and a second rear drain hole 214 spaced apart from each other. First rear drain hole 213 and second rear drain hole 214 each open at inner peripheral side surface 211. Illustratively, the first rear drain hole 213 and the second rear drain hole 214 are symmetrical structures.

Referring to fig. 7, fig. 7 is a schematic structural view of the basin stand 21 shown in fig. 5 at another angle. The first rear drain hole 213 may also be opened at the bottom surface 213a of the first protrusion 21 b. The second rear drain hole 214 may also be opened at the bottom surface 214a of the second projection 21 c.

Referring to fig. 6 again, the main body 21a further has a first through hole 215 and a second through hole 216 spaced apart from each other. The first through hole 215 and the second through hole 216 each form an opening in the inner peripheral side surface 211 and the outer peripheral side surface 212. In the present embodiment, the first through hole 215 is disposed adjacent to the first rear drain hole 213 and spaced apart from the first rear drain hole 213. The second through hole 216 is adjacent to the second rear drain hole 214 and spaced apart from the second rear drain hole 214. In other embodiments, the positions of the first and second through

holes

215 and 216 are not particularly limited.

Referring again to fig. 6 and 7, the speaker 20 further includes a first latch 217 and a second latch 218 spaced apart from each other. A part of the first plug pin 217 and a part of the second plug pin 218 are embedded in the body part 21 a. A part of the first plug pin 217 and a part of the second plug pin 218 are exposed to the outer peripheral side surface 212 of the body portion 21 a. In the present embodiment, the first and

second latches

217 and 218 may be formed as an integral structure with the tub 21. Specifically, the first and

second pins

217 and 218 are directly formed in the tub 21 during the injection molding of the tub 21. In other embodiments, the first latch 217 and the second latch 218 can be fixed to the basin frame 21 by gluing or snap-fitting.

In the present embodiment, the first plug 217 and the second plug 218 are made of a conductive material. The first and

second pins

217 and 218 may be electrically connected to a power source through a signal circuit. At this time, the first and

second pins

217 and 218 may be used to receive an electrical signal.

Referring to fig. 8, fig. 8 is an exploded view of the magnetic circuit system 22 shown in fig. 5. The magnetic circuit system 22 includes a first magnet 221 (also referred to as an outer magnet), a second magnet 222 (also referred to as an inner magnet or a center magnet), a first magnetic conductive member 223 (also referred to as a first washer or a lower magnetic conductive member), a second magnetic conductive member 224 (also referred to as a second washer or a center washer), and a third magnetic conductive member 225 (also referred to as a third washer). In the present embodiment, the first magnet 221 may have a ring shape. The first magnetic conductive member 223 may have a plate shape. In other embodiments, the shapes of the first magnet 221 and the first magnetic conductive member 223 are not particularly limited.

Referring to fig. 9 in conjunction with fig. 8, fig. 9 is a cross-sectional view of the magnetic circuit system 22 shown in fig. 5. The first magnet 221 fixes the first magnetic conductive member 223. The first magnet 221 and the first magnetic conductive member 223 enclose a receiving space 226. The first magnet 221 and the first magnetic conduction member 223 enclose a structure similar to a bowl-shaped structure. For example, the first magnet 221 may fix the first magnetic conductive member 223 by using an adhesive or the like.

In addition, the second magnet 222 is fixed to the first magnetic conductive member 223 and is located in the accommodating space 226. The second magnet 222 is spaced apart from the first magnet 221. The first magnet 221 surrounds the second magnet 222. It is understood that when the first magnet 221 is disposed around the second magnet 222, the first magnet 221 may not be a strict ring structure. For example, the first magnet 221 may have one or more notches. The second magnetic conductive member 224 is located on a side of the second magnet 222 away from the first magnetic conductive member 223. The second magnetic conductive member 224 fixes the second magnet 222. At this time, the second magnet 222 is fixed between the first magnetic conductive member 223 and the second magnetic conductive member 224.

Referring to fig. 8 and 9, third magnetically permeable member 225 includes a body portion 2251, a first extension 2252, and a second extension 2253. The body 2251 may be annular. Wherein the first extension 2252 is connected to the body part 2251 spaced apart from the second extension 2253. For example, the first and

second extension parts

2252 and 2253 may be connected to the outer circumferential side of the body part 2251 at intervals. In other embodiments, third magnetically permeable member 225 may not include second extension 2253.

The first extension 2252 has a first through hole 2254. Illustratively, the first communication hole 2254 forms an opening at the first surface 2252a and the second surface 2252b of the first extension 2252. The first surface 2252a of the first extension 2252 is disposed opposite the second surface 2252b of the first extension 2252.

Wherein the second extension 2253 is provided with a second communication hole 2255. Illustratively, the second communication hole 2255 forms an opening at the first surface 2253a and the second surface 2253b of the second extension 2253. The first surface 2253a of the second extension 2253 is disposed opposite the second surface 2253b of the second extension 2253.

In other embodiments, when the third magnetic conductive member 225 does not include the second extension part 2253, the third magnetic conductive member 225 is not provided with the second communication hole 2255.

Referring to fig. 9 again, the main body 2251 of the third magnetic conductive member 225 is located on a side of the first magnet 221 away from the first magnetic conductive member 223. The main body 2251 of the third magnetic conductive member 225 may fix the first magnet 221. At this time, the first magnet 221 is fixed between the first magnetic conductive member 223 and the main body 2251 of the third magnetic conductive member 225. In addition, the main body 2251 of the third magnetic conductive member 225 is also disposed around the second magnetic conductive member 224. The gap between the main body 2251 of the third magnetic conductive member 225 and the second magnetic conductive member 224 forms a magnetic gap S.

Referring to fig. 9 again, the magnetic pole direction of the second magnet 222 is opposite to the magnetic pole direction of the first magnet 221. In the present embodiment, the end of the first magnet 221 near the first magnetic conductive member 223 is an S-pole. The end of the first magnet 221 near the third magnetic conductive member 225 is N-pole. The end of the second magnet 222 near the first magnetic conductive member 223 is N-pole. The end of the second magnet 222 near the third magnetically permeable member 225 is south. In other embodiments, the end of the first magnet 221 near the first magnetic conductive member 223 is N-pole. The end of the first magnet 221 near the third magnetic conductive member 225 is an S-pole. The end of the second magnet 222 near the first magnetic conductive member 223 is S-pole. The end of the second magnet 222 near the third magnetic conductive member 225 is N-pole.

It will be appreciated that magnetic circuit 22 may generate a magnetic field in a certain direction. Fig. 9 schematically shows the magnetic field direction of the magnetic circuit system 22 of the present embodiment by a broken line. The direction of the magnetic field in the magnetic gap S (i.e., the gap between the third magnetic conductive member 225 and the second magnetic conductive member 224) is the direction of the third magnetic conductive member 225 facing the second magnetic conductive member 224. In other embodiments, the magnetic field direction of the magnetic circuit system 22 can be flexibly set according to requirements.

In the present embodiment, two magnets (i.e., the first magnet 221 and the second magnet 222) are used, and the first magnet 221 is disposed around the second magnet 222, so that the magnetic circuit system 22 has a large magnetic flux. In addition, compared with a single magnetic circuit scheme adopting a magnetic bowl structure, the first magnetic conductive member 223, the second magnetic conductive member 224, and the third magnetic conductive member 225 of the present embodiment have simpler structures and are easily formed in a process.

Referring to fig. 10 in conjunction with fig. 9 and 6, fig. 10 is a schematic partial cross-sectional view of the speaker 20 shown in fig. 2. The magnetic circuit system 22 may be fixed to the inner peripheral side surface 211 of the frame 21. At this time, the frame 21 may be disposed around the magnetic circuit system 22. In this embodiment, the main body 2251 of the third magnetic conductive member 225 may be fixed to the inner peripheral side surface 211 of the frame 21. In other embodiments, the magnetic circuit system 22 may be fixed to the frame 21 by other components. For example. The first magnet 221 of the magnetic circuit system 22 is fixed to the frame 21.

In addition, the first extension part 2252 of the third magnetic conductive member 225 extends from the inner side of the frame 21, passes through the first through hole 215 of the frame 21 (fig. 6 illustrates the first through hole 215 at different angles), and protrudes outside the frame 21, that is, a part of the first extension part 2252 is located on the inner side of the frame 21, a part is located in the first through hole 215, and a part is located on the outer side of the frame 21.

It can be appreciated that when the first extension 2252 is connected and embedded within the frame 21, on the one hand, the overall strength of the frame 21 may be increased. Therefore, when the earphone 100 falls, the problem that the basin frame 21 falls and is easy to break can be solved, and on the other hand, the connection between the magnetic circuit system 22 and the basin frame 21 is better and more stable.

In addition, the second extension 2253 of the third magnetic conductive member 225 extends from the inner side of the frame 21, through the second through hole 216 of the frame 21 (fig. 6 illustrates the second through hole 216 at a different angle), and out of the frame 21, i.e. a part of the second extension 2253 is located at the inner side of the frame 21, a part is located in the second through hole 216, and a part is located at the outer side of the frame 21. It can be appreciated that when the second extension 2253 is connected to and embedded in the frame 21, on the one hand, the overall strength of the frame 21 can be improved. Therefore, when the earphone 100 falls, the problem that the basin frame 21 falls and is easy to break can be solved, and on the other hand, the connection between the magnetic circuit system 22 and the basin frame 21 is better and more stable.

Referring to fig. 11 in conjunction with fig. 10, fig. 11 is a partial structural diagram of the speaker 20 shown in fig. 2 at another angle. The first extension 2252 is disposed adjacent to the first protrusion 21b of the frame 21, and the bottom surface 213a of the first protrusion 21b is coplanar with the second surface 2252b of the first extension 2252. At this time, the first rear vent hole 213 is disposed adjacent to the first communication hole 2254. The opening of the first rear vent hole 213 at the bottom surface 213a of the first protrusion 21b is coplanar with the opening of the first communication hole 2254 at the second surface 2252b of the first extension 2252. In one embodiment, the first extension 2252 of the third magnetic conduction member 225 contacts the first protrusion 21b of the frame 21 and is integrally spliced.

It can be appreciated that the arrangement of the second extension 2253 with the second protrusion 21c of the frame 21 can be referred to the arrangement of the first extension 2252 with the first protrusion 21b of the frame 21. And are not described in detail herein.

Referring to fig. 12 in conjunction with fig. 5, fig. 12 is a schematic partial cross-sectional view of the speaker 20 shown in fig. 2. The steel ring 24 is annular. The steel ring 24 is fixed on the basin frame 21. A steel ring 24 is arranged around the magnetic circuit 22.

Referring again to fig. 12 in conjunction with fig. 5, the edge 25 may be ring-shaped. The edge 25 includes an outer periphery 251, a middle portion 252, and an inner periphery 253 that are connected in series, i.e., the middle portion 252 of the edge 25 is connected between the outer periphery 251 of the edge 25 and the inner periphery 253 of the edge 25. The central portion 252 of the edge 25 may be a convex structure.

Further, the outer periphery 251 of the edge 25 is connected to the steel ring 24. In one embodiment, the outer periphery 251 of the corrugated rim 25 is secured to the steel ring 24 by adhesive tape or glue. In other embodiments, when speaker 20 does not include steel ring 24, outer periphery 251 of corrugated rim 25 is secured to frame 21.

Referring again to fig. 12 in conjunction with fig. 5, the outer periphery of the dome 26 secures the inner periphery 253 of the corrugated rim 25. In one embodiment, the outer periphery of the dome 26 is secured to the inner periphery 253 of the edge 25 by an adhesive. Dome 26 can be used to prevent dust and moisture from the environment from entering speaker 20.

In the present embodiment, the dome 26, the corrugated rim 25, the steel ring 24, the frame 21, and the magnetic circuit system 22 enclose an inner cavity of the speaker 20, i.e., the second space 10 b. The second space 10b is a part of the rear cavity 20b of the loudspeaker 20. Magnetic circuit 22 is located on the top 26 of the ball and on the side of the corrugated rim 25 near the back cavity 20 b. In other embodiments, when the speaker 20 does not include the steel ring 24, the dome 26, the corrugated rim 25, the frame 21, and the magnetic circuit system 22 enclose the second space 10 b.

Referring to fig. 12 again, the voice coil 23 is located in the second space 10 b. A portion of the voice coil 23 is located in the magnetic gap S of the magnetic circuit 22, that is, a portion of the voice coil 23 is located in the gap between the third magnetic conductive member 225 and the second magnetic conductive member 224, and a portion of the voice coil 23 is located in the gap between the first magnet 221 and the second magnet 222. In another embodiment, a part of the voice coil 23 may not be located in the gap between the first magnet 221 and the second magnet 222.

It will be appreciated that the manner in which the voice coil 23 is secured to the dome 26 can be varied. For example, by providing the snap groove in the dome 26, one end of the voice coil 23 is interference-fitted with the snap groove of the dome 26 by means of plugging. For another example, the voice coil 23 is fixed to the dome 26 by means of an adhesive or the like.

In one embodiment, voice coil 23 includes a voice coil bobbin (not shown) and a coil (not shown). For example, the coil may be disposed on the outer circumferential surface of the voice coil bobbin through a winding process. In other embodiments, the voice coil 23 may have other structures.

Referring to fig. 12 again, an input terminal (not shown) of the voice coil 23 may be electrically connected to the first pin 217 (see fig. 6 and 7) through a wire (not shown). In addition, the output end of the voice coil 23 may be electrically connected to the second pin 218 through a wire (not shown) (see fig. 6 and 7). Thus, the first pin 217, the voice coil 23, and the second pin 218 may form a loop. After the first pin 217 and the second pin 218 receive the electrical signal, the electrical signal can be transmitted to the voice coil 23. At this time, the voice coil 23 located in the magnetic gap S is movable in the thickness direction of the speaker 20 by the magnetic field. Fig. 12 schematically shows the moving direction of the voice coil 23 by a dotted line.

It is understood that the present embodiment employs two magnets (i.e., the first magnet 221 and the second magnet 222) to make the magnetic circuit system 22 have a larger magnetic flux. In this way, when the voice coil 23 moves in the thickness direction of the speaker 20 under the magnetic field of the magnetic circuit system 22, the voice coil 23 can generate a large driving force, and at this time, the sensitivity of the speaker 20 is high, and the sound quality of the speaker 20 is good.

Referring to fig. 13, fig. 13 is a partial cross-sectional view of the audio output device 100 shown in fig. 1. The frame 21 of the speaker 20 fixes the front case 11 of the housing 10 and is located in the inner cavity of the housing 10. Illustratively, the speaker 20 may be fixed to the front case 11 of the housing 10 by an adhesive. In other embodiments, when the housing 10 has other structures, the speaker 20 may be fixed to the rear case 12 of the housing 10.

In this embodiment, a space enclosed by a surface of diaphragm 27 (i.e., a surface of diaphragm 27 away from magnetic circuit 22) close to sound outlet 111 (i.e., a surface of diaphragm 27) and frame 21 and housing 10 constitutes front cavity 20a of speaker 20. Front chamber 20a of speaker 20 communicates with sound outlet 111. Thus, when speaker 20 emits sound, the sound can be emitted outside speaker 20 through mouthpiece 111.

In this embodiment, a surface of the diaphragm 27 (i.e., the surface of the diaphragm 27 close to the magnetic circuit system 22) facing away from the sound outlet 111 (i.e., a surface of the diaphragm 27 close to the magnetic circuit system 22) and a second space 10b (i.e., an inner cavity of the speaker 20) enclosed by the frame 21 and the magnetic circuit system 22 form a part of the rear cavity 20b of the speaker 20. The frame 21, the magnetic circuit system 22 and the housing 10 enclose a first space 10a which forms part of the rear cavity 20b of the loudspeaker 20.

Referring to fig. 13 again, the second space 10b communicates with the first rear drain hole 213 and the second rear drain hole 214 of the frame 21. The first rear drain hole 213 and the second rear drain hole 214 communicate with the first space 10 a. Thus, the second space 10b may be communicated to the first space 10a through the first rear drain hole 213 and the second rear drain hole 214. The first rear vent hole 213 and the second rear vent hole 214 constitute a part of the rear cavity 20b of the speaker 20. At this time, the first rear drain hole 213, the second rear drain hole 214, and the first space 10a may increase the volume of the rear cavity 20b of the speaker 20, compared to a case where only the second space 10b is the rear cavity 20b of the speaker 20. In addition, the first space 10a may be communicated to the outside of the earphone 100 through the first air release hole 112 of the case 10. Thus, the first air-release hole 112 is a rear air-release hole of the rear cavity 20b of the speaker 20. The rear cavity 20b of the speaker 20 is opened, so that the rear cavity 20b of the speaker 20 is improved in equivalent compliance, thereby improving the low-frequency performance of the speaker 20.

It will be appreciated that the rear chamber 20b is equivalent to the force compliance C_mAnd the volume V of the cavity₀The relationship among the air density ρ, the sound velocity in air c, and the equivalent air push area S is as follows:

as can be seen from the above formula, the rear cavity 20b is equivalent to force compliance C_mProportional to the volume V of the cavity₀. Therefore, by connecting the rear cavity 20b of the speaker 20 with the outside air, the volume of the rear cavity 20b of the speaker 20 can be enlarged, thereby improving the equivalent compliance of the rear cavity 20b of the speaker 20 and further improving the low-frequency sound performance of the speaker 20.

In one embodiment, speaker 20 may further include a first mesh (not shown). The first mesh cloth is fixed on the front shell 11 and covers the first air release holes 112. Thus, the first mesh cloth not only can filter air impurities (such as dust) outside the earphone 100, but also can adjust the air acoustic resistance in the rear cavity 20b of the loudspeaker 20 to a certain extent, so that the sound quality of the earphone 100 is improved. It is understood that the first mesh may be located in the rear cavity 20b of the speaker 20. The first mesh may be located outside of speaker 20. In other embodiments, a mounting groove (not shown) is formed in the front shell 11, and the first mesh cloth is disposed in the mounting groove, so that the problem that the thickness of the front shell 11 is increased due to the first mesh cloth disposed on the front shell 11 is avoided.

Referring to fig. 14, fig. 14 is a partial cross-sectional view of the audio output device 100 shown in fig. 1. The front chamber 20a of the speaker 20 communicates with the first communication hole 2254 of the first extension 2252 of the third magnetic conduction member 225 and the second communication hole 2255 of the second extension 2253. The first communication hole 2254 and the second communication hole 2255 both communicate with the first space 10 a. Thus, the front chamber 20a of the speaker 20 may be communicated to the first space 10a through the first communication hole 2254 of the first extension 2252 of the third magnetizer 225 and the second communication hole 2255 of the second extension 2253. Further, the first space 10a communicates with the first relief hole 112 of the front case 11. The first space 10a may be communicated to the outside of the earphone 100 through the first relief hole 112 of the front case 11. Thus, the front chamber 20a of the speaker 20 may be communicated to the outside of the earphone 100 through the first communication hole 2254 of the first extension part 2252, the second communication hole 2255 of the second extension part 2253, the first space 10a, and the first air release hole 112. Fig. 14 schematically shows a partial path diagram of the front chamber 20a of the speaker 20 communicating to the outside of the earphone 100 through the first communication hole 2254 and the second communication hole 2255 by a dotted line with an arrow. It is understood that the first communication hole 2254 of the first extension 2252, the second communication hole 2255 of the second extension 2253, the first space 10a and the first air escape hole 112 of the present embodiment constitute an air escape passage of the speaker 20.

Like this, when the user wore earphone 100, along with sound output mouth 111 constantly stretches into, the air in the external auditory canal of ear and speaker 20's front cavity 20a can be released to external environment through the passageway that loses heart to pressure in the rapid balance duct has avoided the earphone to be wearing the uncomfortable problem that the in-process arouses, has also further avoided causing the problem of damage to user's eardrum. In addition, because the first air release hole 112 is located on the side of the diaphragm 27 close to the magnetic circuit system 22, the first air release hole 112 is far away from the front cavity 20a of the speaker 20 to a greater extent, and then the first air release hole 112 is prevented from being blocked by the inner wall of the earmuff 40 or the concha cavity to a greater extent, so that the pressure release effect of the first air release hole 112 to the external ear canal and the front cavity 20a of the speaker 20 is more stable, and the acoustic performance of the earphone 100 is also more stable.

In addition, compared with the scheme that the air leakage channel is formed in the basin frame, the strength of the basin frame is lower. When the earphone falls, the basin frame is easy to break, and the stability of the loudspeaker is poor. In the embodiment, the first extension part 2252 is provided with the first communication hole 2254, and the second extension part 2253 is provided with the second communication hole 2255, at this time, since the third magnetic conduction member 225 has high structural strength, the basin frame 21 is not easily broken after the earphone 100 falls down. The stability of the loudspeaker 20 is better.

Referring again to fig. 14, the front chamber 20a of the speaker 20 communicates with the second air release hole 113 of the front case 11. The second relief hole 113 is located on the side of the edge 25 and the dome 26 (i.e. the diaphragm 27) away from the magnetic circuit 22. The second air escape hole 113 can also balance the air pressure in the external auditory meatus of the ear with the front cavity 20a of the speaker 20 to some extent when the user wears the earphone 100. Fig. 14 schematically shows a partial path of the front cavity 20a of the speaker 20 communicating to the outside of the earphone 100 through the second air escape hole 113 by a dotted line with an arrow.

In one embodiment, speaker 20 may further include a second mesh (not shown). The second mesh cloth is fixed on the front shell 11 and covers the second air release hole 113. Thus, the second mesh cloth not only can filter air impurities (such as dust) outside the earphone 100, but also can adjust the air acoustic resistance in the front cavity 20a of the loudspeaker 20 to a certain extent, so that the sound quality of the earphone 100 is improved. It is understood that a second mesh may be located in the front chamber 20a of the speaker 20. The second mesh may be located outside of speaker 20. In other embodiments, a mounting groove (not shown) is formed in the front shell 11, and a second mesh cloth is disposed in the mounting groove, so that the problem that the thickness of the front shell 11 is increased due to the second mesh cloth disposed on the front shell 11 is avoided.

Referring to fig. 15 and 16, fig. 15 is a partial schematic structural diagram of another embodiment of the speaker 20 shown in fig. 2. Fig. 16 is a partially schematic sectional view of the loudspeaker 20 shown in fig. 15. Speaker 20 also includes mesh 28. The mesh 28 fixes the frame 21 and the first extension 2252 of the third magnetic conductive member 225 (see fig. 10), and the mesh 28 covers the first rear venting hole 213 and the first communication hole 2254. As shown in fig. 14, when the speaker 20 is applied to the earphone 100, the mesh 28 can adjust the acoustic resistance of the air in the front cavity 20a and the rear cavity 20b of the speaker 20, so as to improve the sound quality of the earphone 100. In addition, compared with the scheme that two mesh fabrics 28 are arranged to respectively cover the first rear drain hole 213 and the first communication hole 2254, the first rear drain hole 213 and the first communication hole 2254 can be simultaneously covered by one mesh fabric 28 in this embodiment, so that on one hand, one mesh fabric 28 can be saved, the cost input can be reduced, and on the other hand, the arrangement of the mesh fabric 28, the frame 21 and the first extension 2252 is more compact, and the space utilization rate of the speaker 20 is higher.

In other embodiments, by providing a mounting groove (not shown) on the frame 21 and the first extension part 2252 and disposing the mesh cloth 28 in the mounting groove, the problem of the frame 21 and the first extension part 2252 having an increased thickness due to the mesh cloth 28 is avoided.

In other embodiments, the mesh 28 may not cover both the first rear vent hole 213 and the first communication hole 2254. For example, speaker 20 includes a first mesh (not shown) and a second mesh (not shown). The first mesh cloth is fixed on the frame 21 and covers the first rear drainage hole 213 of the frame 21. The second mesh cloth is fixed to the first extension part 2252 and covers the first communication hole 2254.

It is understood that the positional relationship between the second rear vent hole 214 (see fig. 14) and the second communication hole 2255 (see fig. 15) can also refer to the positional relationship between the first rear vent hole 213 and the first communication hole 2254. In addition, a mesh cloth may be provided at the frame 21 and the second extension 2253 to cover the second rear drain hole 214 and the second communication hole 2255. And will not be described in detail herein.

Several configurations of the headset 100 are described above in detail in connection with the associated figures. The structure of the earphone 100 will be described in detail below with reference to the accompanying drawings.

Referring to fig. 17, fig. 17 is a partial cross-sectional view of another embodiment of the audio output device 100 shown in fig. 1. The loudspeaker 20 further comprises a first duct 29 a. The first duct 29a is located in the first space 10 a. One end of the first duct 29a communicates with the first communication hole 2254 of the first extension 2252, and the other end communicates with the first relief hole 112 of the front housing 11. Thus, the front cavity 20a of the speaker 20 may be communicated to the outside of the earphone 100 through the first communication hole 2254 of the first extension 2252, the first duct 29a, and the first air escape hole 112. Thus, when the user wears the earphone 100, the air pressure in the external auditory meatus of the ear and the front cavity 20a of the speaker 20 can be balanced by the first connection hole 2254 of the first extension part 2252, the first duct 29a, and the first air release hole 112.

Further, the front case 11 is provided with a third relief hole 115. The third air release hole 115 is spaced apart from both the first air release hole 112 and the second air release hole 113. The third relief hole 115 communicates the inside of the casing 10 to the outside of the casing 10. The loudspeaker 20 further comprises a second duct 29 b. The second duct 29b is also located in the first space 10a of the rear cavity 20b of the loudspeaker 20. One end of the second conduit 29b communicates with the second communication hole 2255 of the second extension 2253, and the other end communicates with the third release hole 115 of the front case 11. Thus, the front chamber 20a of the speaker 20 can also be communicated to the outside of the earphone 100 through the second communication hole 2255 of the second extension 2253, the second duct 29b, and the third release hole 115. Thus, when the user wears the earphone 100, the air pressure in the external auditory meatus of the ear and the front cavity 20a of the speaker 20 can be balanced by the second communication hole 2255 of the second extension part 2253, the second duct 29b, and the third air release hole 115. It can be understood that the first communication hole 2254 of the first extension 2252, the second communication hole 2255 of the second extension 2253, the first duct 29a, the second duct 29b, the third air-release hole 115, and the first air-release hole 112 of the present embodiment constitute an air-release passage of the speaker 20.

It can be understood that by providing the first duct 29a and the second duct 29b in the rear cavity 20b of the speaker 20, the front cavity 20a of the speaker 20 and the rear cavity 20b of the speaker 20 can be prevented from communicating with each other, so that the sound wave of the rear cavity 20b of the speaker 20 is prevented from affecting the sound wave of the front cavity 20a of the speaker 20, and the sound quality of the speaker 20 is improved.

In other embodiments, speaker 20 may also include more or fewer components, for example, in some embodiments, speaker 20 may not include first or

second conduits

29a, 29 b. When the speaker 20 does not include the second duct 29b, the front case 11 may not be provided with the third air release hole 115. At this time, the first communication hole 2254 of the first extension part 2252 of the present embodiment, the first duct 29a, and the first relief hole 112 constitute the first passage 20c of the speaker 20.

Referring to fig. 18, fig. 18 is a partial cross-sectional view of another embodiment of the audio output device 100 shown in fig. 1. The headset 100 also includes a feed forward reference microphone 31. The feedforward reference microphone 31 may be used to pick up noise from the environment outside the headset 100. The feedforward reference microphone 31 may be fixed to the front housing 11 by bonding or the like and is located in the front cavity 20a of the speaker 20. In other embodiments, the location of the feedforward reference microphone 31 is not specifically limited.

In addition, the headset 100 also includes a signal processing circuit 32. The signal processing circuit 32 may be fixed to the front case 11 by means of bonding or the like, and is located in the front cavity 20a of the speaker 20. In other embodiments, the location of the signal processing circuit 32 is not particularly limited.

The signal processing circuit 32 is electrically connected between the feedforward reference microphone 31 and the loudspeaker 20. Illustratively, the signal processing circuit 32 includes a filter. It can be understood that, during the noise reduction process, the feedforward reference microphone 31 can quickly collect the noise (e.g. noise in the ear canal) in the environment outside the earphone 100, and perform a fitting process on the noise through the signal processing circuit 32, so that the phase of the noise is converted into a reverse phase, and enters the external auditory canal through the loudspeaker 20 to cancel the normal phase noise in the external auditory canal, thereby achieving the noise reduction effect.

In one embodiment, the headset 100 further includes a residual noise reference microphone (not shown). A residual noise reference microphone is used to monitor the residual signal. The residual signal may be a positive phase noise signal remaining after the positive phase noise in the ear canal and the inverse phase noise emitted from the speaker 20 are cancelled. The residual noise reference microphone may be fixed to the front case 11 by means of bonding or the like and located in the front cavity 20a of the speaker 20. In other embodiments, the location of the residual noise reference microphone is not specifically limited.

In one embodiment, the residual noise reference microphone is electrically connected to the feedforward reference microphone 31. It will be appreciated that in practical applications it is difficult for the signal processing circuit 32 to inverse fit all of the noise. Therefore, when the signal processing circuit 32 does not perform the inverse fitting process on all the noises, the residual noise reference microphone can monitor the residual signal and feed the residual signal back to the feedforward reference microphone 31, so that the signal processing circuit 32 continues to perform the inverse fitting process on the residual signal and transmits the residual signal into the external auditory canal again, and so on until the noises transmitted from the signal processing circuit 32 into the external auditory canal and the directly acquired positive phase noises in the auditory canal completely cancel each other.

It can be understood that the stronger the coherence of the noise collected by the residual noise reference microphone and the feedforward reference microphone 31, the better the noise reduction effect. The coherence of the collected noise of the residual noise reference microphone and the feedforward reference microphone 31 refers to the causality of the noise signals collected by the residual noise reference microphone and the feedforward reference microphone 31, that is, the consistency of the sound wave vibration generated after the noise signals are collected by the residual noise reference microphone and the feedforward reference microphone 31.

It is understood that the air release passage of the present embodiment (i.e., the first communication hole 2254 of the first extension 2252, the second communication hole 2255 of the second extension 2253, the first space 10a, and the first air release hole 112) may provide an additional path for noise to reach the residual noise reference microphone, for example, the external noise of the earphone 100 may directly propagate into the front cavity 20a of the speaker 20 through the first communication hole 2254 of the first extension 2252, the second communication hole 2255 of the second extension 2253, the first space 10a, and the first air escape hole 112, and be received by the residual noise reference microphone in the front cavity 20a of the speaker 20, thereby improving the noise coherence received by the feedforward reference microphone 31 and the residual noise reference microphone, the residual signal fed back to the filter by the residual noise reference microphone in the noise reduction processing process is more accurate, so that the noise reduction processing of the earphone is facilitated.

The above description is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and the changes or substitutions should be covered within the scope of the present application; the embodiments and features of the embodiments of the present application may be combined with each other without conflict. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An audio output device (100) comprising a housing (10) and a speaker (20), wherein the speaker (20) is mounted in an inner cavity of the housing (10);

the loudspeaker (20) comprises a frame (21), a magnetic circuit system (22) and a vibrating diaphragm (27), wherein the frame (21) is used for fixing the shell (10), the magnetic circuit system (22) and the vibrating diaphragm (27) are both connected with the frame (21), and the magnetic circuit system (22) is positioned on one side of the vibrating diaphragm (27);

the magnetic circuit system (22) comprises a first magnet (221), a second magnet (222), a first magnetic conduction member (223), a second magnetic conduction member (224) and a third magnetic conduction member (225), the third magnetic conduction member (225) comprises a main body part (2251) and a first extension part (2252) connected to the main body part (2251), the first magnet (221) is fixed between the first magnetic conduction member (223) and the main body part (2251), the second magnet (222) is fixed between the first magnetic conduction member (223) and the second magnetic conduction member (224), the first magnet (221) and the second magnet (222) are arranged at intervals, the first magnet (221) surrounds the second magnet (222), the first extension part (2252) fixes the basin frame (21), and the first extension part (2252) is provided with a first communication hole (2254);

the casing (10) is equipped with first disappointing hole (112), first disappointing hole (112) are located vibrating diaphragm (27) are close to one side of magnetic circuit (22), first disappointing hole (112) intercommunication the outside of sound output device (100), preceding chamber (20a) of speaker (20) are passed through first through-hole (2254) intercommunication first disappointing hole (112).

2. The sound output device (100) according to claim 1, wherein the first communication hole (2254) communicates with the rear cavity (20b) of the speaker (20), and the rear cavity (20b) of the speaker (20) communicates with the first air release hole (112).

3. The sound output device (100) according to claim 2, wherein the frame (21), the magnetic circuit system (22) and the housing (10) enclose a first space (10a), the frame (21), the magnetic circuit system (22) and the diaphragm (27) enclose a second space (10b), the frame (21) is provided with a first rear vent (213), the first rear vent (213) communicates the first space (10a) and the second space (10b), and the rear cavity (20b) of the speaker (20) includes the first space (10a), the second space (10b) and the first rear vent (213);

the first communication hole (2254) communicates with the first space (10a), and the first space (10a) communicates with the first relief hole (112).

4. The sound output device (100) according to claim 3, characterized in that the first rear vent hole (213) is arranged adjacent to the first communication hole (2254);

the loudspeaker (20) further comprises a mesh (28), the mesh (28) fixes the frame (21) and the first extension part (2252) of the third magnetic conductive member (225), and the mesh (28) covers the first rear vent hole (213) and the first connecting hole (2254).

5. The acoustic output device (100) according to claim 4, wherein an opening of the first rear vent hole (213) in the frame (21) is coplanar with an opening of the first communication hole (2254) in the first extension (2252) of the third magnetically permeable member (225).

6. The sound output device (100) according to claim 1, wherein the speaker (20) further comprises a first duct (29a), the first duct (29a) communicating the first communication hole (2254) with the first air release hole (112).

7. The sound output device (100) according to any one of claims 1 to 6, wherein the frame (21) is provided with a first through hole (215), a part of the first extension (2252) being located within the first through hole (215) and a part being located outside the frame (21).

8. The sound output device (100) according to claim 7, wherein the third magnetically permeable member (225) further comprises a second extension (2253), the second extension (2253) being connected to the main body part (2251) and being spaced apart from the first extension (2252), the second extension (2253) being connected to the basket (21), the second extension (2253) being provided with a second communication hole (2255), the second communication hole (2255) being in communication with the first communication hole (2254);

the basin frame (21) is provided with a second through hole (216), and a part of the second extension part (2253) is positioned in the second through hole (216) and a part of the second extension part is positioned outside the basin frame (21).

9. The sound output device (100) according to any one of claims 1 to 6, wherein the first extension part (2252) secures the housing (10).

10. The sound output device (100) according to any of claims 1 to 6, wherein the housing (10) is provided with a second air-release hole (113), the second air-release hole (113) is located on a side of the diaphragm (27) away from the magnetic circuit system (22);

the second air release hole (113) communicates the front cavity (20a) of the speaker (20) with the outside of the sound output device (100).

11. The acoustic output device (100) according to any one of claims 1 to 6, wherein the loudspeaker (20) comprises a voice coil (23), a portion of the voice coil (23) being fixed to the diaphragm (27), a portion being located in a magnetic gap (S) between the main body portion (2251) of the third magnetic conductive member (225) and the second magnetic conductive member (224), and a portion being located in a gap between the first magnet (221) and the second magnet (222).

12. The sound output device (100) of claim 11, wherein the diaphragm (27) comprises a corrugated rim (25) and a ball top (26), an outer periphery of the ball top (26) fixes an inner periphery (253) of the corrugated rim (25), and a portion of the voice coil (23) fixes the ball top (26);

the loudspeaker (20) comprises a steel ring (24), and the steel ring (24) is connected between the basin frame (21) and the outer periphery (251) of the corrugated rim (25).

13. The sound output device (100) according to any one of claims 1 to 6, wherein the sound output device (100) further comprises a feedforward reference microphone (31), the feedforward reference microphone (31) being located in an inner cavity of the housing (10), the feedforward reference microphone (31) being configured to collect noise of an environment outside the sound output device (100);

the sound output device (100) further comprises a signal processing circuit (32), the signal processing circuit (32) is located in the inner cavity of the shell (10), the signal processing circuit (32) is used for receiving noise collected by the feedforward reference microphone (31) and processing the noise to convert the phase of the noise into an opposite phase, and the signal processing circuit (32) is further used for transmitting the noise with the opposite phase to the loudspeaker (20) to enable the loudspeaker (20) to emit sound waves with the opposite phase.

14. Sound output device (100) according to one of claims 1 to 6, characterized in that the diaphragm (27) encloses a front cavity (20a) of the loudspeaker (20) away from the surface of the magnetic circuit (22), the frame (21) and the housing (10).

15. The sound output device (100) according to any one of claims 1 to 6, wherein a magnetic pole direction of the first magnet (221) is opposite to a magnetic pole direction of the second magnet (222).

16. Sound output device (100) according to one of the claims 1 to 6, characterized in that the sound output device (100) is a headphone.

17. A loudspeaker (20) for a sound output device (100), comprising a frame (21), a magnetic circuit system (22) and a diaphragm (27), wherein the magnetic circuit system (22) and the diaphragm (27) are both connected to the frame (21), and the magnetic circuit system (22) is located on one side of the diaphragm (27);

the magnetic circuit system (22) comprises a first magnet (221), a second magnet (222), a first magnetic conduction member (223), a second magnetic conduction member (224) and a third magnetic conduction member (225), the third magnetic conduction member (225) comprises a main body part (2251) and a first extension part (2252) connected to the main body part (2251), the first magnet (221) is fixed between the first magnetic conduction member (223) and the main body part (2251), the second magnet (222) is fixed between the first magnetic conduction member (223) and the second magnetic conduction member (224), the first magnet (221) and the second magnet (222) are arranged at intervals, the first magnet (221) surrounds the second magnet (222), and the first extension part (2252) fixes the basin frame (21);

the first extension part (2252) is provided with a first communication hole (2254), the first communication hole (2254) being for communicating a front chamber (20a) of the speaker (20) to the outside of the sound output device (100).

18. A loudspeaker (20) according to claim 17, wherein the frame (21) is provided with a first through hole (215), a part of the first extension (2252) being located within the first through hole (215) and a part being located outside the frame (21).

19. The loudspeaker (20) of claim 18, wherein the third magnetically permeable member (225) further comprises a second extension (2253), the second extension (2253) being connected to the main body portion (2251) and being spaced apart from the first extension (2252), the second extension (2253) being connected to the frame (21), the second extension (2253) being provided with a second communication hole (2255), the second communication hole (2255) being in communication with the first communication hole (2254);

20. A loudspeaker (20) according to any of claims 17 to 19, wherein the frame (21) is provided with a first rear vent (213), the first rear vent (213) communicating an inner cavity of the loudspeaker (20) with an exterior of the loudspeaker (20).

21. A loudspeaker (20) according to claim 20, wherein said first rear vent hole (213) is arranged adjacent to said first communication hole (2254);

22. A loudspeaker (20) according to any one of claims 17 to 19, wherein the diaphragm (27) comprises a corrugated rim (25) and a dome (26), an outer periphery of the dome (26) fixing an inner periphery (253) of the corrugated rim (25), an outer periphery (251) of the corrugated rim (25) fixing the frame (21);

the loudspeaker (20) comprises a voice coil (23), a part of the voice coil (23) is fixed on the ball top (26), a part of the voice coil is positioned in a magnetic gap (S) between the main body part (2251) of the third magnetic conductive part (225) and the second magnetic conductive part (224), and a part of the voice coil is positioned in a gap between the first magnet (221) and the second magnet (222).

23. A loudspeaker (20) according to claim 22, wherein said loudspeaker (20) comprises a steel ring (24), said steel ring (24) being connected between said frame (21) and an outer periphery (251) of said corrugated rim (25).