WO2019196105A1 - 一种动铁结构 - Google Patents
一种动铁结构 Download PDFInfo
- Publication number
- WO2019196105A1 WO2019196105A1 PCT/CN2018/083028 CN2018083028W WO2019196105A1 WO 2019196105 A1 WO2019196105 A1 WO 2019196105A1 CN 2018083028 W CN2018083028 W CN 2018083028W WO 2019196105 A1 WO2019196105 A1 WO 2019196105A1
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- WO
- WIPO (PCT)
- Prior art keywords
- hole
- induction coil
- electromagnetic induction
- iron structure
- fixed
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
- H04R11/02—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/11—Aspects regarding the frame of loudspeaker transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/11—Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
Definitions
- Embodiments of the present application relate to the field of horn technology, and in particular, to a moving iron structure.
- the moving iron unit is small in size and can be easily placed in the ear canal, the moving iron unit is widely used in in-ear headphones. Or in a hearing aid.
- the inventor of the present application found that the prior art has the following problems: in the prior art, the in-ear earphone or the hearing aid is of a closed structure, when the in-ear earphone or the hearing aid is worn on the user's ear.
- a kind of blocking effect is generated.
- the user listens to music using the in-ear headphones, the user cannot hear the speech or the external sound, and the user cannot perform normal with others.
- Communication even when the user walks to listen to music, it will cause safety problems due to the inability to hear external car speakers, vehicle ringing and other warning sounds.
- the in-ear headphones or hearing aids will completely block the ear canal, the user will wear it for a long time. Due to the different air pressures inside and outside the ear canal, the user may feel uncomfortable.
- the technical problem to be solved by the embodiment of the present application is to provide a moving iron structure.
- the movable iron structure is provided with a first channel and a second channel, and the first and second channels are controlled to communicate to control the inside of the human ear and the outside world. Connected.
- a technical solution adopted by the embodiment of the present application is to provide a moving iron structure, including: a casing, which is provided with an air passage, a first through hole and a second through hole, the first pass The hole and the second through hole are communicated through the air passage; a magnetic element; a diaphragm, one side of the diaphragm is provided with a first convex portion adapted to the first through hole; and an electromagnetic induction coil is fixed at the same Illustrating another surface of the diaphragm, and the electromagnetic induction coil is located within a magnetic field of the magnetic element;
- the electromagnetic induction coil When the electromagnetic induction coil is energized, the electromagnetic induction coil can drive the diaphragm to move toward or away from the first through hole, wherein when the first protrusion moves to the closed position, The first convex portion blocks the first through hole, and when the first convex portion moves to the open position, the first convex portion is separated from the first through hole, the first through hole Was opened.
- the magnetic element, the diaphragm and the electromagnetic induction coil are both located in the airway.
- the diaphragm divides the air passage into an upper air passage and a lower air passage, and the diaphragm is further provided with a communication hole, and the upper air passage and the first through hole respectively communicate with the air passage
- the holes are connected, and the lower air path is respectively connected to the second through hole and the communication hole, and the magnetic element and the electromagnetic induction coil are both located in the lower air path.
- the communication hole is offset from the first through hole.
- the moving iron structure further includes a support ring, the support ring is fixed in the air passage; the diaphragm comprises a film and a vibration wing, and the film is fixed on the support ring, the vibration wing Fixed on the film, the first convex portion is located on the vibration wing, and the electromagnetic induction coil is fixed to the film.
- the film comprises a second protrusion, a fixing portion, a connecting portion and a communication hole;
- the second protrusion is formed by a central protrusion of the film, and the second protrusion passes the a connecting portion is connected to the fixing portion, the fixing portion is for fixing with the support ring, and the communication hole is disposed between the fixing portion and the second convex portion, the second convex portion For fixing to the first boss.
- the first through hole, the first convex portion and the second convex portion are all elliptical.
- the electromagnetic induction coil is annular; the magnetic component further includes an annular groove, and the electromagnetic induction coil is disposed in the annular groove.
- the housing includes an upper housing, a lower housing, and a sealing plate; the sealing plate is located between the upper housing and the lower housing and respectively opposite to the upper housing and the lower housing
- the first through hole is disposed in a middle portion of the sealing plate
- the upper housing is provided with a third through hole opposite to the first through hole
- the second through hole is disposed in the Lower case.
- the magnetic component comprises a magnet and a magnetic conductive block, and the magnet and the magnetic conductive block are both fixed to a bottom of the lower casing, and the magnet and the magnetic conductive block are fixed.
- the magnet comprises a first main magnet block, a first side magnet block and a second side magnet block
- the magnetic conductive block comprises a first magnetic conductive plate, a second magnetic conductive plate and an annular magnetic conductive plate
- the first magnetic conductive plate is fixed to the bottom of the lower casing, and the first main magnet block, the first side magnet block and the second side magnet block are both fixed to the first magnetic conductive plate, and
- the first side magnet block and the second side magnet block are respectively located on two sides of the first main magnet block, and the second magnetic conductive plate is fixed on the first main magnet block, the ring magnetically conductive
- the plate is fixed on the first side magnet block and the second side magnet block, and the support ring is fixed on the annular magnetic block.
- the opposite ends of the first magnetic conductive plate are respectively provided with a support member, and the support member is formed by extending end faces of opposite ends of the first magnetic conductive plate in the same direction, and the support member is used for the support member Supporting the annular magnetic conductive plate.
- the number of the second through holes is two, and the second through holes are disposed on both sides of the support.
- the moving iron structure includes: a housing provided with an air passage, a first through hole and a second through hole, The first through hole and the second through hole are communicated through the air passage; a magnetic element; a diaphragm, one side of the diaphragm is provided with a first convex portion adapted to the first through hole; an electromagnetic induction coil is fixed And the other surface of the diaphragm, and the electromagnetic induction coil is located in a magnetic field of the magnetic element; when the electromagnetic induction coil is energized, the electromagnetic induction coil can drive the diaphragm toward or away from Directional movement of the first through hole, wherein the first raised portion blocks the first through hole when the first raised portion moves to the closed position, when the first raised portion moves to In the open position, the first raised portion is separated from the first through hole, and the first through hole is opened.
- the first convex portion and the first through hole are in a state of being blocked and separated, thereby achieving control of the communication or disconnection between the first through hole and the second through hole.
- the moving iron structure is applied to an electronic device such as an in-ear earphone or a hearing aid.
- Figure 1 is a perspective view of an embodiment of a moving iron structure of the present application
- Figure 2 is a plan view showing an embodiment of the moving iron structure of the present application
- Figure 3 is an exploded view of an embodiment of the moving iron structure of the present application.
- Figure 4 is a cross-sectional view of A-A shown in Figure 2;
- Figure 5 is a cross-sectional view of B-B shown in Figure 2;
- Figure 6 is an exploded view of the housing of the moving iron structure embodiment of the present application.
- Figure 7 is an exploded view of the magnetic element in the embodiment of the moving iron structure of the present application.
- Figure 8 is an exploded view of the diaphragm in the embodiment of the moving iron structure of the present application.
- Fig. 9 is a plan view showing a film in the embodiment of the moving iron structure of the present application.
- a moving iron structure 100 includes a housing 10 , a magnetic element 20 , a diaphragm 30 , an electromagnetic induction coil 40 , and a support ring 50 , and a magnetic element 20 .
- the diaphragm 30, the electromagnetic induction coil 40 and the support ring 50 are all located in the housing 10.
- the magnetic component 20 is fixed in the housing 10.
- the support ring 50 is fixed on the magnetic component 20, and the diaphragm 30 is fixed on the support ring 50.
- the electromagnetic induction coil 40 is fixed to the diaphragm 30 and the electromagnetic induction coil 40 is located in the magnetic field of the magnetic element 20.
- the housing 10 includes a sealing plate 11, a lower housing 12 and an upper housing 13; the sealing plate 11 is located between the upper housing 13 and the lower housing 12 and respectively with the upper housing 13 and the lower housing
- the housing 12 is fixed, and the housing 10 is further provided with an air passage 14, a first through hole 111, a second through hole 121 and a third through hole 131; specifically, the magnetic element 20, the diaphragm 30, the electromagnetic induction coil 40 and the support
- the ring 50 is located in the air passage 14, and the support ring 50 is fixed in the air passage 14; the first through hole 111 is disposed in the middle of the sealing plate 11, and the second through hole 121 is disposed in the lower casing 12, and the third through hole 131
- the first through hole 111 and the third through hole 131 are oppositely disposed; optionally, the air passage 14 is formed by the sealing plate 11 and the lower casing 12, and the first through hole 111 and the second hole are formed.
- the through holes 121 are communicated through the air passages 14. Further, the third through holes 131, the first through holes 111, the air passages 14 and the second through holes 121 are sequentially connected to each other, and the external gas can sequentially pass through the third through holes 131.
- the first through hole 111, the air passage 14 and the second through hole 121 are circulated.
- the first through hole 111, the second through hole 121, and the third through hole 131 may have an elliptical shape, a circular shape, a rectangular shape, or the like.
- the magnetic element 20 includes a magnet 21 and a magnetic block 22, and the magnet 21 and the magnetic block 22 are fixed to the bottom of the lower casing 12, and the magnet 21 and the magnetic block 22 are fixed to each other.
- the magnet 21 includes a first main magnet block 211, a first side magnet block 212 and a second side magnet block 213.
- the magnetic conductive block 22 includes a first magnetic conductive plate 221, a second magnetic conductive plate 222 and a circular magnetic conductive plate.
- the first magnetic conductive plate 221 is fixed to the bottom of the lower casing 12, and the first main magnet block 211, the first side magnet block 212 and the second side magnet block 213 are both fixed to the first magnetic conductive plate 221, and the first The side magnet block 212 and the second side magnet block 213 are respectively located on two sides of the first main magnet block 221, and the first side magnet block 212 and the second side magnet block 213 and the first main magnet block 221 are spaced and spaced apart from each other.
- the first side magnet block 212 and the second side magnet block 213 are both elongated magnet blocks and their cross sections are all rectangular.
- the first main magnet block 221 is a wide flat magnet block and The cross section is also rectangular.
- the second magnetic conductive plate 222 is fixed on the first main magnet block 211, and the annular magnetic conductive plate 223 is fixed on the first side magnet block 212 and the second side magnet block 213 and fixed to the inner side wall of the lower casing 12, and the support ring 50 is fixed to the annular magnetic conductive block 223 and fixed to the inner side wall of the lower casing 12.
- the opposite ends of the first magnetic conductive plate 221 are respectively provided with a supporting member 2211, and the supporting member 2211 is formed by the end faces of the opposite ends of the first magnetic conductive plate 221
- the support member 2211 is configured to support the annular magnetic conductive plate 223.
- the number of the support members 2211 is two and respectively located at the middle of the opposite ends of the first magnetic conductive plate 221, and the two support members 2211 They are parallel to each other and are perpendicular to the first magnetic conductive plate 221 .
- the number of the second through holes 121 is two, and the second through holes 121 are disposed on both sides of the support member 2211 to prevent the support member 2211 from blocking the second through holes 121.
- the electromagnetic induction coil 40 is annular; the magnetic element 20 further includes an annular groove (not labeled), and the electromagnetic induction coil 40 is disposed in the annular groove. Specifically, the annular groove is formed by the annular magnetic conductive plate 223 and the second guide. The magnetic plate 222 is enclosed.
- one side of the diaphragm 30 is provided with a first protrusion 321 adapted to the first through hole 111; the diaphragm 30 divides the air passage 14 into an upper air path (not labeled) and The lower air path (not shown), the diaphragm 30 is further provided with a communication hole 314, and the upper air path is respectively connected with the first through hole 111 and the communication hole 314, and the lower air path is respectively connected with the second through hole 121 and the communication hole 314.
- Both the magnetic element 20 and the electromagnetic induction coil 40 are located in the lower gas path.
- the communication hole 314 is offset from the first through hole 111 to ensure that when the first protrusion 321 on the diaphragm 30 is displaced to be sealed with the first through hole 111, the communication hole 314 can abut the sealing plate 11 and be The communication hole 314 is sealed.
- the diaphragm 30 includes a film 31 and a vibration wing 32.
- the film 31 is fixed on the support ring 50, and the vibration wing 32 is fixed on the film 31.
- the first protrusion 321 is located on the vibration wing 32, and the first protrusion 321 is The middle portion of the vibration wing 32 is convexly formed.
- the film 31 and the vibration wings 32 are formed by hot pressing, and the upper surface of the vibration wing 32 can be sprayed with silica gel or other soft rubber material to ensure that the first convex portion 321 on the diaphragm 30 is displaced to the first
- the through hole 111 has a better sealing when sealed.
- the film 31 includes a second convex portion 311, a fixing portion 312, a connecting portion 313, and a communication hole 314; the second convex portion 311 is formed by a central portion of the film 31, and the second convex portion 311 passes through the connecting portion 313.
- the fixing portion 312 is connected to the fixing ring 312.
- the communication hole 314 is disposed between the fixing portion 312 and the second protruding portion 311.
- the second protruding portion 311 is used for the first protruding portion 321 . fixed.
- the connecting portion 313 has a U-shaped structure, and one end of the connecting portion 313 of the U-shaped structure is connected to the fixing portion 312, and the other end of the connecting portion 313 of the U-shaped structure and the extending portion extending from the edge of the second protruding portion 311 (not labeled) the connection, and the U-shaped groove on the connecting portion 313 of the U-shaped structure faces the sealing plate 11, and the connecting portion 313 of the U-shaped structure can enhance the deformation ability of the diaphragm 30, so that the deformation range of the first convex portion 321 Bigger.
- the first raised portion 321 and the second raised portion 311 are both elliptical, and the first raised portion 321 and the second raised portion 311 are the same size and shape.
- the electromagnetic induction coil 40 is fixed to the other surface of the diaphragm 30. Specifically, the electromagnetic induction coil 40 is fixed to the film 31, and the electromagnetic induction coil 40 is located in the magnetic field of the magnetic element 20. Further, the moving iron structure 100 further includes leads, and the leads are respectively connected to the electromagnetic induction coil 40 and an external control power source.
- the moving iron structure 100 of the embodiment of the present application can be applied to an in-ear type electronic device such as an in-ear earphone or a hearing aid.
- the electromagnetic induction coil 40 when the electromagnetic induction coil 40 is energized, the electromagnetic induction coil 40 can drive the diaphragm 30 to move toward or away from the first through hole 111, wherein when the first protrusion 321 moves to the closed position The first protruding portion 321 blocks the first through hole 111.
- the first through hole 111 and the second through hole 121 will not communicate, and the gas or sound cannot be circulated from the first through hole 111 or transmitted to the second through hole.
- the hole 121, the gas or the sound cannot be circulated or transmitted from the second through hole 121 to the first through hole 111.
- the moving iron structure 100 of the embodiment of the present application is applied to the earphone, and when the first convex portion 321 is to be When a through hole 111 is blocked, the user will not be able to hear the outside sound, and the air pressure of the user's ear and the outside world will not be balanced; referring to FIG. 5, when the first raised portion 321 is moved to the open position, the first protrusion The portion 321 is separated from the first through hole 111, and the first through hole 111 is opened. At this time, the first through hole 111 and the second through hole 121 are connected, and gas or sound can be circulated or transmitted from the first through hole 111 to the second portion.
- the through hole 121 gas or sound can also be from the second
- the through hole 121 is circulated or transmitted to the first through hole 111, so that when the first convex portion 321 is separated from the first through hole 111, the user will be able to hear the outside sound, and the air pressure of the user's ear and the outside will also be balanced.
- the closed position refers to a position where the first convex portion 321 completely blocks the first through hole 111
- the open position refers to a position where the first convex portion 321 does not completely block the first through hole 111 completely.
- the open position includes multiple location spaces.
- the first convex portion 321 is blocked or distant from the first through hole 111, thereby controlling the first through hole 111 and the second through hole.
- the inside of the human ear will communicate with the outside, and the user can hear the external sound, and the air pressure inside and outside the human ear is also It will be flat, which increases the safety and comfort of the user when wearing the headset.
- the moving iron structure 100 in the embodiment of the present application does not need to additionally add an electric drive, but can realize the first convex portion 321 and the first by controlling the movement of the electromagnetic induction coil 40 in the magnetic field of the magnetic element 20.
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Abstract
一种动铁结构(100),涉及喇叭技术领域,该动铁结构(100)包括:壳体(10),其设置有气道(14)、第一通孔(111)和第二通孔(121)、磁性元件(20)、振膜(30),第一通孔(111)和第二通孔(121)通过气道(14)连通;振膜(30)的一面设置有与第一通孔(111)相适配的第一凸起部(321);电磁感应线圈(40)固定于与振膜(30)的另一表面,并且电磁感应线圈(40)位于磁性元件(20)的磁场内;当电磁感应线圈(40)通电时,电磁感应线圈(40)可带动振膜(30)朝向或者朝远离第一通孔(111)的方向运动,由此,通过控制电磁感应线圈(40)与磁性元件(20)的相对运动,使第一凸起部(321)与第一通孔(111)实现堵塞和分离等状态,从而实现控制第一通孔(111)和第二通孔(121)的连通状态,连通时用户便可以听见外界的声音,人耳内部与外界的气压也将持平,由此提升了用户佩戴耳机时的安全性和舒适性。
Description
本申请实施方式涉及喇叭技术领域,特别是涉及一种动铁结构。
随着科学技术和国民经济的快速发展,入耳式耳机和助听器等电子设备也得以快速发展,由于动铁单元体积很小,可以轻易的放入耳道,因此动铁单元广泛应用在入耳式耳机或者助听器中。
本申请的发明人在实现本申请的过程中,发现现有技术中存在以下问题:在现有技术中,入耳式耳机或者助听器是封闭式结构的,当入耳式耳机或者助听器佩戴于用户的耳朵时,会完全堵住耳道,从而产生一种堵耳效应,例如在用户使用入耳式耳机听音乐的时候,用户无法听清楚自己的讲话声或者外部的声音,导致用户无法与别人进行正常地沟通,甚至在用户走路听音乐的时候,会由于无法听到外部的汽车喇叭、车辆铃声等警示声音而导致安全问题,另外,由于入耳式耳机或者助听器会完全堵塞耳道,用户长时间佩戴将由于内外耳道的气压不同,导致用户会有不舒适感。
发明内容
本申请实施方式主要解决的技术问题是提供一种动铁结构,动铁结构设置有第一通道和第二通道,通过控制第一通道和第二通道连通,实现控制人耳内部将与外界的连通。
为解决上述技术问题,本申请实施方式采用的一个技术方案是:提供一种动铁结构,包括:壳体,其设置有气道、第一通孔和第二通孔,所述第一通孔和第二通孔通过所述气道连通;磁性元件;振膜,所述振膜的一面设置有与所述第一通孔相适配的第一凸起部;电磁感应线圈,固定于与所述振膜的另一表面,并且所述电磁感应线圈位于所述磁性元件的磁场内;
当所述电磁感应线圈通电时,所述电磁感应线圈可带动所述振膜朝向或者朝远离第一通孔的方向运动,其中,当所述第一凸起部运动至闭合位置时,所述第一凸起部将所述第一通孔堵塞,当所述第一凸起部运动至打开位置时,所 述第一凸起部与所述第一通孔分离,所述第一通孔被打开。
可选的,所述磁性元件、振膜和电磁感应线圈均位于气道内。
可选的,所述振膜将所述气道分割成上气路和下气路,所述振膜还设置有连通孔,所述上气路分别与所述第一通孔和所述连通孔连通,所述下气路分别与第二通孔和所述连通孔连通,所述磁性元件和电磁感应线圈均位于下气路。
可选的,所述连通孔与所述第一通孔错位设置。
可选的,所述动铁结构还包括支撑环,所述支撑环固定于所述气道内;所述振膜包括薄膜和振翼,所述薄膜固定于所述支撑环上,所述振翼固定于所述薄膜上,所述第一凸起部位于所述振翼,所述电磁感应线圈固定于薄膜。
可选的,所述薄膜包括第二凸起部、固定部、连接部和连通孔;所述第二凸起部由所述薄膜的中部凸起形成,所述第二凸起部通过所述连接部与所述固定部连接,所述固定部用于和所述支撑环固定,所述连通孔设置于所述固定部和所述第二凸起部之间,所述第二凸起部用于和所述第一凸起部固定。
可选的,所述第一通孔、所述第一凸起部和所述第二凸起部均为椭圆形。
可选的,所述电磁感应线圈呈环状;所述磁性元件还包括环形槽,所述电磁感应线圈设置于所述环形槽内。
可选的,所述壳体包括上壳体、下壳体和密封板;所述密封板位于所述上壳体和所述下壳体之间且分别与所述上壳体和所述下壳体固定,所述第一通孔设置于所述密封板的中部,所述上壳体设置有与所述第一通孔相对的第三通孔,所述第二通孔设置于所述下壳体。
可选的,所述磁性元件包括磁铁和导磁块,所述磁铁和所述导磁块均固定与所述下壳体的底部,所述磁铁和所述导磁块固定。
可选的,所述磁铁包括第一主磁铁块、第一侧磁铁块和第二侧磁铁块,所述导磁块包括第一导磁板、第二导磁板和环形导磁板;所述第一导磁板固定于所述下壳体的底部,所述第一主磁铁块、第一侧磁铁块和所述第二侧磁铁块均与所述第一导磁板固定,且所述第一侧磁铁块和所述第二侧磁铁块分别位于所述第一主磁铁块的两侧,所述第二导磁板固定于所述第一主磁铁块上,所述环形导磁板固定于所述第一侧磁铁块和所述第二侧磁铁块上,所述支撑环固定于所述环形导磁块上。
可选的,所述第一导磁板的两相对端分别设置有支撑件,所述支撑件由所 述第一导磁板的两相对端的端面朝同一方向延伸形成,所述支撑件用于支撑所述环形导磁板。
可选的,所述第二通孔的数量为两个,所述第二通孔设置于所述支撑件的两侧。
本申请实施方式的有益效果是:区别于现有技术的情况,在本申请实施方式中,动铁结构包括:壳体,其设置有气道、第一通孔和第二通孔,所述第一通孔和第二通孔通过所述气道连通;磁性元件;振膜,所述振膜的一面设置有与所述第一通孔相适配的第一凸起部;电磁感应线圈,固定于与所述振膜的另一表面,并且所述电磁感应线圈位于所述磁性元件的磁场内;当所述电磁感应线圈通电时,所述电磁感应线圈可带动所述振膜朝向或者朝远离第一通孔的方向运动,其中,当所述第一凸起部运动至闭合位置时,所述第一凸起部将所述第一通孔堵塞,当所述第一凸起部运动至打开位置时,所述第一凸起部与所述第一通孔分离,所述第一通孔被打开。由此,通过控制电磁感应线圈与磁性元件的相对运动,使第一凸起部与第一通孔实现堵塞和分离等状态,从而实现控制第一通孔和第二通孔的连通或者不连通,动铁结构应用于入耳式耳机或者助听器等电子设备,当第一通孔和第二通孔的连通时,人耳内部将与外界连通,此时用户便可以听见外界的声音,且人耳内部与外界的气压也将持平,由此提升了用户佩戴耳机时的安全性和舒适性。
一个或多个实施方式通过与之对应的附图中的图片进行示例性说明,这些示例性说明并不构成对实施方式的限定,附图中具有相同参考数字标号的元件表示为类似的元件,除非有特别申明,附图中的图不构成比例限制。
图1是本申请动铁结构实施方式的立体图;
图2是本申请动铁结构实施方式的俯视图;
图3是本申请动铁结构实施方式的爆炸图;
图4是图2所示的A-A的剖面图;
图5是图2所示的B-B的断面图;
图6是本申请动铁结构实施方式中壳体的爆炸图;
图7是本申请动铁结构实施方式中磁性元件的爆炸图;
图8是本申请动铁结构实施方式中振膜的爆炸图;
图9是本申请动铁结构实施方式中薄膜的俯视图。
为了便于理解本申请,下面结合附图和具体实施方式,对本申请进行更详细的说明。需要说明的是,当元件被表述“固定于”另一个元件,它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件,它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义,本说明书所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本说明书中在本申请的说明书中所使用的术语只是为了描述具体的实施方式的目的,不是用于限制本申请。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1至图5,本申请实施方式的一种动铁结构100,该动铁结构100包括壳体10、磁性元件20、振膜30、电磁感应线圈40和支撑环50,磁性元件20、振膜30、电磁感应线圈40和支撑环50均位于壳体10内,磁性元件20固定于壳体10内,支撑环50固定在磁性元件20上,振膜30固定在支撑环50上,电磁感应线圈40固定在振膜30上且电磁感应线圈40位于磁性元件20的磁场中。
其中,请进一步参阅图6,壳体10包括密封板11、下壳体12和上壳体13;密封板11位于上壳体13和下壳体12之间且分别与上壳体13和下壳体12固定,壳体10还设置有气道14、第一通孔111、第二通孔121和第三通孔131;具体的,磁性元件20、振膜30、电磁感应线圈40和支撑环50均位于气道14内,且支撑环50固定于气道14内;第一通孔111设置于密封板11的中部,第二通孔121设置于下壳体12,第三通孔131设置于上壳体13,且第一通孔111和第三通孔131相对设置;可选的,气道14由密封板11和下壳体12围合形成,第一通孔111和第二通孔121通过气道14连通,进一步的,第三通孔131、第一通孔111、气道14和第二通孔121之间依次连通,外界的气体可以依次穿过第 三通孔131、第一通孔111、气道14和第二通孔121进行流通。可选的,第一通孔111、第二通孔121和第三通孔131的形状可以为椭圆形、圆形或者矩形等。
请进一步参阅图7,磁性元件20包括磁铁21和导磁块22,磁铁21和导磁块22均固定与下壳体12的底部,磁铁21和导磁块22之间相互固定。进一步的,磁铁21包括第一主磁铁块211、第一侧磁铁块212和第二侧磁铁块213,导磁块22包括第一导磁板221、第二导磁板222和环形导磁板223;第一导磁板221固定于下壳体12的底部,第一主磁铁块211、第一侧磁铁块212和第二侧磁铁块213均与第一导磁板221固定,且第一侧磁铁块212和第二侧磁铁块213分别位于第一主磁铁块221的两侧,第一侧磁铁块212和第二侧磁铁块213与第一主磁铁块221之间均存在间距且间距相同;可选的,第一侧磁铁块212和第二侧磁铁块213均为长条形的磁铁块且它们的横截面均为矩形,第一主磁铁块221为宽扁形的磁铁块且其横截面也为矩形。第二导磁板222固定于第一主磁铁块211上,环形导磁板223固定于第一侧磁铁块212和第二侧磁铁块213上并与下壳体12的内侧壁固定,支撑环50固定于环形导磁块223上并与下壳体12的内侧壁固定。进一步的,为了更好的固定和支撑环形导磁板223,第一导磁板221的两相对端分别设置有支撑件2211,支撑件2211由第一导磁板221的两相对端的端面朝同一方向延伸形成,支撑件2211用于支撑环形导磁板223,可选的,支撑件2211的数量为两个且分别位于第一导磁板221的两个相对端的中部,两个支撑件2211之间相互平行并均与第一导磁板221垂直。可选的,第二通孔121的数量为两个,第二通孔121设置于支撑件2211的两侧,避免支撑件2211堵塞第二通孔121。可选的,电磁感应线圈40呈环状;磁性元件20还包括环形槽(未标示),电磁感应线圈40设置于环形槽内,具体的,环形槽是由环形导磁板223和第二导磁板222围合形成的。
请进一步参阅图8和图9,振膜30的一面设置有与第一通孔111相适配的第一凸起部321;振膜30将气道14分割成上气路(未标示)和下气路(未标示),振膜30还设置有连通孔314,上气路分别与第一通孔111和连通孔314连通,下气路分别与第二通孔121和连通孔314连通,磁性元件20和电磁感应线圈40均位于下气路。可选的,连通孔314与第一通孔111错位设置,确保振膜30上第一凸起部321位移至与第一通孔111密封时,连通孔314可以与密封板11抵接并被连通孔314密封。具体的,振膜30包括薄膜31和振翼32,薄膜31固定 于支撑环50上,振翼32固定于薄膜31上,第一凸起部321位于振翼32,第一凸起部321由振翼32的中部凸起形成。可选的,薄膜31和振翼32通过热压成型在一起,振翼32的上表面可以喷涂硅胶或者其他软性的橡胶材料,确保振膜30上第一凸起部321位移至与第一通孔111密封时有更好的密封性。进一步的,薄膜31包括第二凸起部311、固定部312、连接部313和连通孔314;第二凸起部311由薄膜31的中部凸起形成,第二凸起部311通过连接部313与固定部312连接,固定部312用于和支撑环50固定,连通孔314设置于固定部312和第二凸起部311之间,第二凸起部311用于和第一凸起部321固定。可选的,连接部313呈U形结构,且U形结构的连接部313的一端连接固定部312,U形结构的连接部313的另一端与第二凸起部311边缘延伸出的延伸部(未标注)连接,且U形结构的连接部313上U形槽朝向密封板11,U形结构的连接部313可以增强振膜30的形变能力,使得第一凸起部321的形变活动范围更大。可选的,第一凸起部321和第二凸起部311均为椭圆形,且第一凸起部321和第二凸起部311的大小和形状均相同。
电磁感应线圈40固定于与振膜30的另一表面,具体的,电磁感应线圈40固定于薄膜31,并且电磁感应线圈40位于磁性元件20的磁场内。进一步的,动铁结构100还包括引线,引线分别与电磁感应线圈40和外接控制电源连接。
需要说明的是:本申请实施方式的动铁结构100可以应用于入耳式耳机或者助听器等入耳式电子设备。
在本申请实施方式中,当电磁感应线圈40通电时,电磁感应线圈40可带动振膜30朝向或者朝远离第一通孔111的方向运动,其中,当第一凸起部321运动至闭合位置时,第一凸起部321将第一通孔111堵塞,此时第一通孔111和第二通孔121将不连通,气体或者声音无法从第一通孔111流通或者传递至第二通孔121,气体或者声音也无法从第二通孔121流通或者传递至第一通孔111,进一步的,本申请实施方式的动铁结构100运用至耳机中,当第一凸起部321将第一通孔111堵塞时,用户将无法听见外界的声音,且用户人耳和外界的气压将无法平衡;请再参阅图5,当第一凸起部321运动至打开位置时,第一凸起部321与第一通孔111分离,第一通孔111被打开,此时第一通孔111和第二通孔121将连通,气体或者声音可以从第一通孔111流通或者传递至第二通孔121,气体或者声音也可以从第二通孔121流通或者传递至第一通孔111,所 以当第一凸起部321与第一通孔111分离时,用户将可以听见外界的声音,且用户人耳和外界的气压也将平衡。需要说明的是,闭合位置指的是第一凸起部321将第一通孔111完全堵塞的位置,打开位置指的是第一凸起部321未完全将第一通孔111完全堵塞的位置,打开位置包括多个位置空间。由此,通过控制电磁感应线圈40与磁性元件20的相对运动,实现第一凸起部321对第一通孔111进行堵塞或者远离的状态,从而实现控制第一通孔111和第二通孔121的连通或者不连通,当第一通孔111和第二通孔121的连通时,人耳内部将与外界连通,此时用户便可以听见外界的声音,且人耳内部与外界的气压也将持平,由此提升了用户佩戴耳机时的安全性和舒适性。
值得说明的是:本申请实施方式中的动铁结构100无需额外增设电驱,而是通过控制电磁感应线圈40在磁性元件20的磁场中进行的运动便可实现第一凸起部321与第一通孔111的相对运动,由此,本动铁结构100中电磁感应线圈40和磁性元件20的组合结构将更加紧凑,节省了空间。
以上所述仅为本申请的实施方式,并非因此限制本申请的专利范围,凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换,或直接或间接运用在其他相关的技术领域,均同理包括在本申请的专利保护范围内。
Claims (13)
- 一种动铁结构,其特征在于,包括:壳体,其设置有气道、第一通孔和第二通孔,所述第一通孔和第二通孔通过所述气道连通;磁性元件;振膜,所述振膜的一面设置有与所述第一通孔相适配的第一凸起部;电磁感应线圈,固定于与所述振膜的另一表面,并且所述电磁感应线圈位于所述磁性元件的磁场内;当所述电磁感应线圈通电时,所述电磁感应线圈可带动所述振膜朝向或者朝远离第一通孔的方向运动,其中,当所述第一凸起部运动至闭合位置时,所述第一凸起部将所述第一通孔堵塞,当所述第一凸起部运动至打开位置时,所述第一凸起部与所述第一通孔分离,所述第一通孔被打开。
- 根据权利要求1所述的动铁结构,其特征在于,所述磁性元件、振膜和电磁感应线圈均位于所述气道内。
- 根据权利要求2所述的动铁结构,其特征在于,所述振膜将所述气道分割成上气路和下气路,所述振膜还设置有连通孔,所述上气路分别与所述第一通孔和所述连通孔连通,所述下气路分别与第二通孔和所述连通孔连通,所述磁性元件和电磁感应线圈均位于下气路。
- 根据权利要求3所述的动铁结构,其特征在于,所述连通孔与所述第一通孔错位设置。
- 根据权利要求3所述的动铁结构,其特征在于,所述动铁结构还包括支撑环,所述支撑环固定于所述气道内;所述振膜包括薄膜和振翼,所述薄膜固定于所述支撑环上,所述振翼固定于所述薄膜上,所述第一凸起部位于所述振翼,所述电磁感应线圈固定于薄膜。
- 根据权利要求5所述的动铁结构,其特征在于,所述薄膜包括第二凸起部、固定部、连接部和连通孔;所述第二凸起部由所述薄膜的中部凸起形成,所述第二凸起部通过所述连接部与所述固定部连接,所述固定部用于和所述支撑环固定,所述连通孔设置于所述固定部和所述第二凸起部之间,所述第二凸起部用于和所述第一凸起部 固定。
- 根据权利要求6所述的动铁结构,其特征在于,所述第一通孔、所述第一凸起部和所述第二凸起部均为椭圆形。
- 根据权利要求1所述的动铁结构,其特征在于,所述电磁感应线圈呈环状;所述磁性元件还包括环形槽,所述电磁感应线圈设置于所述环形槽内。
- 根据权利要求5所述的动铁结构,其特征在于,所述壳体包括上壳体、下壳体和密封板;所述密封板位于所述上壳体和所述下壳体之间且分别与所述上壳体和所述下壳体固定,所述第一通孔设置于所述密封板的中部,所述上壳体设置有与所述第一通孔相对的第三通孔,所述第二通孔设置于所述下壳体。
- 根据权利要求9所述的动铁结构,其特征在于,所述磁性元件包括磁铁和导磁块,所述磁铁和所述导磁块均固定于所述下壳体的底部,所述磁铁和所述导磁块固定。
- 根据权利要求10所述的动铁结构,其特征在于,所述磁铁包括第一主磁铁块、第一侧磁铁块和第二侧磁铁块,所述导磁块包括第一导磁板、第二导磁板和环形导磁板;所述第一导磁板固定于所述下壳体的底部,所述第一主磁铁块、第一侧磁铁块和所述第二侧磁铁块均与所述第一导磁板固定,且所述第一侧磁铁块和所述第二侧磁铁块分别位于所述第一主磁铁块的两侧,所述第二导磁板固定于所述第一主磁铁块上,所述环形导磁板固定于所述第一侧磁铁块和所述第二侧磁铁块上,所述支撑环固定于所述环形导磁块上。
- 根据权利要求11所述的动铁结构,其特征在于,所述第一导磁板的两相对端分别设置有支撑件,所述支撑件由所述第一导磁板的两相对端的端面朝同一方向延伸形成,所述支撑件用于支撑所述环形导磁板。
- 根据权利要求12所述的动铁结构,其特征在于,所述第二通孔的数量为两个,所述第二通孔设置于所述支撑件的两侧。
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