CN108322876B - Moving iron structure - Google Patents
Moving iron structure Download PDFInfo
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- CN108322876B CN108322876B CN201810320127.XA CN201810320127A CN108322876B CN 108322876 B CN108322876 B CN 108322876B CN 201810320127 A CN201810320127 A CN 201810320127A CN 108322876 B CN108322876 B CN 108322876B
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- Prior art keywords
- hole
- moving iron
- fixed
- iron structure
- induction coil
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims description 13
- 239000011148 porous material Substances 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000613 ear canal Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
The embodiment of the invention relates to the technical field of horns, in particular to a moving iron structure. The moving iron structure comprises: the shell is provided with an air passage, a first through hole and a second through hole, and the first through hole is communicated with the second through hole through the air passage; a magnetic element; one surface of the vibrating diaphragm is provided with a first protruding part matched with the first through hole; an electromagnetic induction coil fixed on the other surface of the diaphragm and positioned in the magnetic field of the magnetic element; when the electromagnetic induction coil is electrified, the electromagnetic induction coil can drive the vibrating diaphragm to move towards or away from the direction of the first through hole, and therefore, through controlling the relative movement of the electromagnetic induction coil and the magnetic element, the first protruding part and the first through hole are blocked, separated and the like, so that the communication state of the first through hole and the second through hole is controlled, a user can hear external sounds during communication, the inside of the human ear is leveled with external air pressure, and safety and comfort of the user wearing the earphone are improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of horns, in particular to a moving iron structure.
Background
Along with the rapid development of science and technology and national economy, electronic devices such as in-ear headphones and hearing aids are rapidly developed, and the moving iron unit is widely applied to the in-ear headphones or hearing aids because the moving iron unit has a small volume and can be easily placed into an auditory canal.
The inventors of the present invention have found that the following problems exist in the prior art in the process of implementing the present invention: in the prior art, an in-ear earphone or a hearing aid is of a closed structure, when the in-ear earphone or the hearing aid is worn on the ear of a user, an auditory canal is completely blocked, so that an auditory canal blocking effect is generated, for example, when the user uses the in-ear earphone to listen to music, the user cannot hear own speaking sound or external sound, so that the user cannot normally communicate with other people, even when the user walks to listen to music, safety problems are caused by incapacitating external automobile horns, vehicle bell sounds and other warning sounds, and in addition, because the in-ear earphone or the hearing aid completely blocks the auditory canal, the user can feel uncomfortable when wearing the in-ear earphone or the hearing aid for a long time due to different air pressure of an inner external auditory canal.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a moving iron structure, wherein the moving iron structure is provided with a first channel and a second channel, and the communication between the first channel and the second channel is controlled to realize the communication between the inner part of the human ear and the outside.
In order to solve the technical problems, one technical scheme adopted by the embodiment of the invention is as follows: provided is a moving iron structure including: the shell is provided with an air passage, a first through hole and a second through hole, and the first through hole and the second through hole are communicated through the air passage; a magnetic element; a first bulge part matched with the first through hole is arranged on one surface of the vibrating diaphragm; an electromagnetic induction coil fixed on the other surface of the diaphragm and positioned in the magnetic field of the magnetic element;
when the electromagnetic induction coil is electrified, the electromagnetic induction coil can drive the vibrating diaphragm to move towards or away from the first through hole, wherein when the first protruding part moves to the closed position, the first protruding part blocks the first through hole, and when the first protruding part moves to the open position, the first protruding part is separated from the first through hole, and the first through hole is opened.
Optionally, the magnetic element, the vibrating diaphragm and the electromagnetic induction coil are all located in the air passage.
Optionally, the vibrating diaphragm will the air flue is cut apart into upper gas circuit and lower gas circuit, the vibrating diaphragm still is provided with the intercommunicating pore, upper gas circuit respectively with first through-hole with the intercommunicating pore intercommunication, lower gas circuit respectively with the second through-hole with the intercommunicating pore intercommunication, magnetic element and electromagnetic induction coil all are located lower gas circuit.
Optionally, the communication hole and the first through hole are arranged in a staggered manner.
Optionally, the moving iron structure further comprises a support ring, and the support ring is fixed in the air passage; the vibrating diaphragm comprises a film and a vibrating wing, the film is fixed on the supporting ring, the vibrating wing is fixed on the film, the first protruding portion is located on the vibrating wing, and the electromagnetic induction coil is fixed on the film.
Optionally, the film includes a second protruding portion, a fixing portion, a connecting portion, and a communication hole; the second protruding portion is formed by protruding in the middle part of film, the second protruding portion pass through connecting portion with fixed part is connected, the fixed part be used for with the support ring is fixed, the intercommunicating pore set up in fixed part with between the second protruding portion, the second protruding portion be used for with first protruding portion is fixed.
Optionally, the first through hole, the first protruding portion and the second protruding portion are all oval.
Optionally, the electromagnetic induction coil is annular; the magnetic element further comprises an annular groove, and the electromagnetic induction coil is arranged in the annular groove.
Optionally, the housing includes an upper housing, a lower housing, and a sealing plate; the sealing plate is located between the upper shell and the lower shell and is fixed with the upper shell and the lower shell respectively, the first through hole is formed in the middle of the sealing plate, the upper shell is provided with a third through hole opposite to the first through hole, and the second through hole is formed in the lower shell.
Optionally, the magnetic element includes a magnet and a magnetic conductive block, where the magnet and the magnetic conductive block are both fixed to the bottom of the lower housing, and the magnet and the magnetic conductive block are fixed.
Optionally, the magnet includes a first main magnet block, a first side magnet block and a second side magnet block, and the magnetic conductive block includes a first magnetic conductive plate, a second magnetic conductive plate and an annular magnetic conductive plate; the first magnetic conduction board is fixed in the bottom of lower casing, first main magnet piece, first side magnet piece with the second side magnet piece all with first magnetic conduction board is fixed, just first side magnet piece with the second side magnet piece is located respectively the both sides of first main magnet piece, the second magnetic conduction board is fixed in on the first main magnet piece, annular magnetic conduction board is fixed in first side magnet piece with on the second side magnet piece, the holding ring is fixed in on the annular magnetic conduction board.
Optionally, the two opposite ends of the first magnetic conduction plate are respectively provided with a supporting piece, the supporting pieces are formed by extending the end surfaces of the two opposite ends of the first magnetic conduction plate towards the same direction, and the supporting pieces are used for supporting the annular magnetic conduction plate.
Optionally, the number of the second through holes is two, and the second through holes are arranged on two sides of the supporting piece.
The beneficial effects of the embodiment of the invention are as follows: in an embodiment of the present invention, the moving iron structure includes, unlike the case of the prior art: the shell is provided with an air passage, a first through hole and a second through hole, and the first through hole and the second through hole are communicated through the air passage; a magnetic element; a first bulge part matched with the first through hole is arranged on one surface of the vibrating diaphragm; an electromagnetic induction coil fixed on the other surface of the diaphragm and positioned in the magnetic field of the magnetic element; when the electromagnetic induction coil is electrified, the electromagnetic induction coil can drive the vibrating diaphragm to move towards or away from the first through hole, wherein when the first protruding part moves to the closed position, the first protruding part blocks the first through hole, and when the first protruding part moves to the open position, the first protruding part is separated from the first through hole, and the first through hole is opened. From this, through the relative motion of control electromagnetic induction coil and magnetic element, make first bellying and first through-hole realize state such as jam and separation to realize the intercommunication of control first through-hole and second through-hole or not communicate, move electronic equipment such as iron structure is applied to in-ear earphone or audiphone, when the intercommunication of first through-hole and second through-hole, people's ear inside will communicate with the external world, and the user alright hear external sound this moment, and people's ear inside will be the same with external atmospheric pressure too, security and travelling comfort when wearing the earphone by this has promoted the user.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures do not depict a proportional limitation unless expressly stated otherwise.
FIG. 1 is a perspective view of an embodiment of a moving iron structure of the present invention;
FIG. 2 is a top view of an embodiment of the moving iron structure of the present invention;
FIG. 3 is an exploded view of an embodiment of the moving iron structure of the present invention;
FIG. 4 is a cross-sectional view of A-A shown in FIG. 2;
FIG. 5 is a cross-sectional view of B-B shown in FIG. 2;
FIG. 6 is an exploded view of the housing in an embodiment of the moving iron structure of the present invention;
FIG. 7 is an exploded view of a magnetic element in an embodiment of the moving iron structure of the present invention;
FIG. 8 is an exploded view of a diaphragm in an embodiment of the moving iron structure of the present invention;
fig. 9 is a top view of a film in an embodiment of the moving iron structure of the present invention.
Detailed Description
In order that the invention may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 5, a moving iron structure 100 according to an embodiment of the invention includes a housing 10, a magnetic element 20, a vibrating diaphragm 30, an electromagnetic induction coil 40 and a supporting ring 50, wherein the magnetic element 20, the vibrating diaphragm 30, the electromagnetic induction coil 40 and the supporting ring 50 are all located in the housing 10, the magnetic element 20 is fixed in the housing 10, the supporting ring 50 is fixed on the magnetic element 20, the vibrating diaphragm 30 is fixed on the supporting ring 50, the electromagnetic induction coil 40 is fixed on the vibrating diaphragm 30 and the electromagnetic induction coil 40 is located in a magnetic field of the magnetic element 20.
With further reference to fig. 6, 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 and lower cases 13 and 12 and is fixed to the upper and lower cases 13 and 12, respectively, and the case 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 ring 50 are all located in the air passage 14, and the support ring 50 is fixed in the air passage 14; the first through hole 111 is arranged in the middle of the sealing plate 11, the second through hole 121 is arranged in the lower shell 12, the third through hole 131 is arranged in the upper shell 13, and the first through hole 111 and the third through hole 131 are oppositely arranged; optionally, the air passage 14 is formed by enclosing the sealing plate 11 and the lower housing 12, the first through hole 111 and the second through hole 121 are communicated through the air passage 14, further, the third through hole 131, the first through hole 111, the air passage 14 and the second through hole 121 are sequentially communicated, and external air can sequentially pass through the third through hole 131, the first through hole 111, the air passage 14 and the second through hole 121 to circulate. Alternatively, the shapes of the first through hole 111, the second through hole 121, and the third through hole 131 may be elliptical, circular, rectangular, or the like.
Referring to fig. 7, the magnetic element 20 includes a magnet 21 and a magnetic conductive block 22, wherein the magnet 21 and the magnetic conductive block 22 are fixed to the bottom of the lower housing 12, and the magnet 21 and the magnetic conductive block 22 are fixed to each other. Further, the magnet 21 includes a first main magnet block 211, a first side magnet block 212, and a second side magnet block 213, and the magnetic conductive block 22 includes a first magnetic conductive plate 221, a second magnetic conductive plate 222, and an annular magnetic conductive plate 223; the first magnetic conductive plate 221 is fixed at the bottom of the lower housing 12, the first main magnet block 211, the first side magnet block 212 and the second side magnet block 213 are all fixed with the first magnetic conductive plate 221, and the first side magnet block 212 and the second side magnet block 213 are respectively positioned at two sides of the first main magnet block 211, and the first side magnet block 212, the second side magnet block 213 and the first main magnet block 211 have the same spacing; alternatively, the first side magnet block 212 and the second side magnet block 213 are elongated magnet blocks and have rectangular cross sections, and the first main magnet block 211 is a wide flat magnet block and also has a rectangular cross section. The second magnetic conductive plate 222 is fixed to the first main magnet block 211, the annular magnetic conductive plate 223 is fixed to the first side magnet block 212 and the second side magnet block 213 and is fixed to the inner side wall of the lower case 12, and the support ring 50 is fixed to the annular magnetic conductive plate 223 and is fixed to the inner side wall of the lower case 12. Further, for better fixing and supporting the annular magnetic conductive plate 223, the two opposite ends of the first magnetic conductive plate 221 are respectively provided with a supporting member 2211, the supporting member 2211 is formed by extending the end surfaces of the two opposite ends of the first magnetic conductive plate 221 towards the same direction, the supporting member 2211 is used for supporting the annular magnetic conductive plate 223, alternatively, the number of the supporting members 2211 is two and are respectively located in the middle parts of the two opposite ends of the first magnetic conductive plate 221, and the two supporting members 2211 are parallel to each other and are perpendicular to the first magnetic conductive plate 221. Optionally, the number of the second through holes 121 is two, and the second through holes 121 are disposed on two sides of the support 2211, so as to avoid the support 2211 from blocking the second through holes 121. Optionally, the electromagnetic coil 40 is annular; the magnetic element 20 further includes an annular groove (not shown) in which the electromagnetic coil 40 is disposed, and in particular, the annular groove is defined by an annular magnetic conductive plate 223 and a second magnetic conductive plate 222.
Referring to fig. 8 and 9, a first protrusion 321 adapted to the first through hole 111 is disposed on one surface of the diaphragm 30; the diaphragm 30 divides the air passage 14 into an upper air passage (not labeled) and a lower air passage (not labeled), the diaphragm 30 is further provided with a communication hole 314, the upper air passage is respectively communicated with the first through hole 111 and the communication hole 314, the lower air passage is respectively communicated with the second through hole 121 and the communication hole 314, and the magnetic element 20 and the electromagnetic induction coil 40 are both positioned in the lower air passage. Alternatively, the communication hole 314 is offset from the first through hole 111, so that when the first protrusion 321 on the diaphragm 30 is displaced to seal with the first through hole 111, the communication hole 314 can abut against the sealing plate 11 and be sealed by the communication hole 314. Specifically, the diaphragm 30 includes a film 31 and a vibrating wing 32, the film 31 is fixed on the support ring 50, the vibrating wing 32 is fixed on the film 31, the first protrusion 321 is located on the vibrating wing 32, and the first protrusion 321 is formed by protruding a middle portion of the vibrating wing 32. Optionally, the film 31 and the vibration wings 32 are formed together by hot pressing, and the upper surface of the vibration wings 32 may be coated with silica gel or other soft rubber materials, so as to ensure better sealing performance when the first protrusion 321 on the diaphragm 30 is displaced to seal with the first through hole 111. Further, the film 31 includes a second protruding portion 311, a fixing portion 312, a connecting portion 313, and a communication hole 314; the second protruding portion 311 is formed by protruding the middle portion of the film 31, the second protruding portion 311 is connected with the fixing portion 312 through the connection portion 313, the fixing portion 312 is used for being fixed with the support ring 50, the communication hole 314 is arranged between the fixing portion 312 and the second protruding portion 311, and the second protruding portion 311 is used for being fixed with the first protruding portion 321. Optionally, the connecting portion 313 is in a U-shaped structure, one end of the connecting portion 313 of the U-shaped structure is connected with the fixing portion 312, the other end of the connecting portion 313 of the U-shaped structure is connected with an extending portion (not labeled) extending from the edge of the second protruding portion 311, and a 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 capability of the diaphragm 30, so that the deformation moving range of the first protruding portion 321 is larger. Alternatively, the first protruding portion 321 and the second protruding portion 311 are both elliptical, and the first protruding portion 321 and the second protruding portion 311 are both the same in 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 within the magnetic field of the magnetic element 20. Further, the moving iron structure 100 further includes leads connected to the electromagnetic coil 40 and an external control power source, respectively.
It should be noted that: the moving iron structure 100 according to the embodiment of the present invention can be applied to in-ear electronic devices such as in-ear headphones and hearing aids.
In the embodiment of the invention, when the electromagnetic induction coil 40 is energized, the electromagnetic induction coil 40 can drive the vibrating diaphragm 30 to move towards or away from the first through hole 111, wherein when the first protruding portion 321 moves to the closed position, the first protruding portion 321 blocks the first through hole 111, at this time, the first through hole 111 and the second through hole 121 are not communicated, gas or sound cannot flow from the first through hole 111 or be transmitted to the second through hole 121, and gas or sound cannot flow from the second through hole 121 or be transmitted to the first through hole 111; referring to fig. 5 again, when the first protrusion 321 moves to the open position, the first protrusion 321 is separated from the first through hole 111, the first through hole 111 is opened, at this time, the first through hole 111 and the second through hole 121 are communicated, gas or sound can flow from the first through hole 111 or be transferred to the second through hole 121, and gas or sound can also flow from the second through hole 121 or be transferred to the first through hole 111, so that when the first protrusion 321 is separated from the first through hole 111, a user can hear an external sound, and the air pressure of the user's ear and the external air pressure are balanced. The closed position refers to a position where the first through hole 111 is completely blocked by the first protrusion 321, and the open position refers to a position where the first through hole 111 is not completely blocked by the first protrusion 321, and the open position includes a plurality of position spaces. Therefore, by controlling the relative movement of the electromagnetic induction coil 40 and the magnetic element 20, the first protruding portion 321 is in a state of blocking or keeping away from the first through hole 111, so that the first through hole 111 and the second through hole 121 are controlled to be communicated or not, when the first through hole 111 and the second through hole 121 are communicated, the inner part of the human ear is communicated with the outside, at the moment, the user can hear the outside sound, and the inner part of the human ear is level with the air pressure of the outside, so that the safety and the comfort of the user wearing the earphone are improved.
Noteworthy are: the moving iron structure 100 in the embodiment of the invention does not need to additionally add an electric drive, but can realize the relative movement of the first protruding part 321 and the first through hole 111 by controlling the movement of the electromagnetic induction coil 40 in the magnetic field of the magnetic element 20, so that the combined structure of the electromagnetic induction coil 40 and the magnetic element 20 in the moving iron structure 100 is more compact, and the space is saved.
The foregoing description is only of embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present invention or directly or indirectly applied to other related technical fields are included in the scope of the present invention.
Claims (12)
1. A moving iron structure, comprising:
the shell is provided with an air passage, a first through hole and a second through hole, wherein the first through hole and the second through hole are communicated through the air passage, and the shell comprises an upper shell, a lower shell and a sealing plate;
the sealing plate is positioned between the upper shell and the lower shell and is respectively fixed with the upper shell and the lower shell, the first through hole is formed in the middle of the sealing plate, the upper shell is provided with a third through hole opposite to the first through hole, and the second through hole is formed in the lower shell;
a magnetic element;
a first bulge part matched with the first through hole is arranged on one surface of the vibrating diaphragm;
an electromagnetic induction coil fixed on the other surface of the diaphragm and positioned in the magnetic field of the magnetic element;
when the electromagnetic induction coil is electrified, the electromagnetic induction coil can drive the vibrating diaphragm to move towards or away from the first through hole, wherein when the first protruding part moves to the closed position, the first protruding part blocks the first through hole, and when the first protruding part moves to the open position, the first protruding part is separated from the first through hole, and the first through hole is opened.
2. The moving iron structure according to claim 1, wherein,
the magnetic element, the vibrating diaphragm and the electromagnetic induction coil are all positioned in the air passage.
3. The moving iron structure according to claim 2, wherein,
the vibrating diaphragm will the air flue is cut apart into upper gas circuit and lower gas circuit, the vibrating diaphragm still is provided with the intercommunicating pore, upper gas circuit respectively with first through-hole with the intercommunicating pore intercommunication, lower gas circuit respectively with the second through-hole with the intercommunicating pore intercommunication, magnetic element and electromagnetic induction coil all are located lower gas circuit.
4. The moving iron structure according to claim 3, wherein,
the communication hole and the first through hole are arranged in a staggered mode.
5. The moving iron structure according to claim 3, wherein,
the moving iron structure further comprises a supporting ring, and the supporting ring is fixed in the air passage;
the vibrating diaphragm comprises a film and a vibrating wing, the film is fixed on the supporting ring, the vibrating wing is fixed on the film, the first protruding portion is located on the vibrating wing, and the electromagnetic induction coil is fixed on the film.
6. The moving iron structure according to claim 5, wherein,
the film comprises a second protruding part, a fixing part, a connecting part and a communication hole;
the second protruding portion is formed by protruding in the middle part of film, the second protruding portion pass through connecting portion with fixed part is connected, the fixed part be used for with the support ring is fixed, the intercommunicating pore set up in fixed part with between the second protruding portion, the second protruding portion be used for with first protruding portion is fixed.
7. The moving iron structure of claim 6, wherein,
the first through hole, the first protruding portion and the second protruding portion are all oval.
8. The moving iron structure according to claim 1, wherein,
the electromagnetic induction coil is annular;
the magnetic element further comprises an annular groove, and the electromagnetic induction coil is arranged in the annular groove.
9. The moving iron structure according to claim 5, wherein,
the magnetic element comprises a magnet and a magnetic conduction block, wherein the magnet and the magnetic conduction block are both fixed at the bottom of the lower shell, and the magnet and the magnetic conduction block are fixed.
10. The moving iron structure of claim 9, wherein the moving iron structure comprises a plurality of moving iron cores,
the magnet comprises a first main magnet block, a first side magnet block and a second side magnet block, and the magnetic conduction block comprises a first magnetic conduction plate, a second magnetic conduction plate and an annular magnetic conduction plate;
the first magnetic conduction board is fixed in the bottom of lower casing, first main magnet piece, first side magnet piece with the second side magnet piece all with first magnetic conduction board is fixed, just first side magnet piece with the second side magnet piece is located respectively the both sides of first main magnet piece, the second magnetic conduction board is fixed in on the first main magnet piece, annular magnetic conduction board is fixed in first side magnet piece with on the second side magnet piece, the holding ring is fixed in on the annular magnetic conduction board.
11. The moving iron structure of claim 10, wherein the moving iron structure comprises a plurality of moving iron cores,
the two opposite ends of the first magnetic conduction plate are respectively provided with a supporting piece, the supporting pieces are formed by extending the end faces of the two opposite ends of the first magnetic conduction plate towards the same direction, and the supporting pieces are used for supporting the annular magnetic conduction plate.
12. The moving iron structure of claim 11, wherein the moving iron structure comprises a plurality of moving iron cores,
the number of the second through holes is two, and the second through holes are arranged on two sides of the supporting piece.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320127.XA CN108322876B (en) | 2018-04-11 | 2018-04-11 | Moving iron structure |
| PCT/CN2018/083028 WO2019196105A1 (en) | 2018-04-11 | 2018-04-13 | Moving-iron structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810320127.XA CN108322876B (en) | 2018-04-11 | 2018-04-11 | Moving iron structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108322876A CN108322876A (en) | 2018-07-24 |
| CN108322876B true CN108322876B (en) | 2023-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810320127.XA Active CN108322876B (en) | 2018-04-11 | 2018-04-11 | Moving iron structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108322876B (en) |
| WO (1) | WO2019196105A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109121063B (en) * | 2018-07-27 | 2023-10-20 | 深圳倍声声学技术有限公司 | Device for adjusting magnetic balance of moving iron unit |
| CN111954130B (en) * | 2020-09-03 | 2022-03-25 | 歌尔股份有限公司 | Sound production monomer and sound production device |
| CN112637747A (en) * | 2020-12-24 | 2021-04-09 | 苏州倍声声学技术有限公司 | Moving-iron telephone receiver and noise reduction earphone |
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| Publication number | Publication date |
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| CN108322876A (en) | 2018-07-24 |
| WO2019196105A1 (en) | 2019-10-17 |
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