CN108574920B - Moving iron unit - Google Patents
Moving iron unit Download PDFInfo
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- CN108574920B CN108574920B CN201810672345.XA CN201810672345A CN108574920B CN 108574920 B CN108574920 B CN 108574920B CN 201810672345 A CN201810672345 A CN 201810672345A CN 108574920 B CN108574920 B CN 108574920B
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- moving iron
- armature
- shaped
- iron unit
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 23
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 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
- H04R11/00—Transducers of moving-armature or moving-core type
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention relates to a moving iron unit which comprises a shell, a vibrating diaphragm arranged in the shell and a driving assembly connected with the vibrating diaphragm to drive the vibrating diaphragm to vibrate, wherein the driving assembly comprises a magnet, a balanced armature and a coil sleeved on the balanced armature, the balanced armature comprises an S-shaped balanced armature, the S-shaped balanced armature comprises a fixed arm and a movable arm, and the movable arm of the S-shaped balanced armature is connected with the vibrating diaphragm. According to the moving iron unit, the S-shaped balance armature is designed, after the S-shaped balance armature is magnetized, the vibration amplitude of the movable arm is doubled when the S-shaped balance armature is subjected to the magnetic attraction or repulsion of the magnet, so that the vibration amplitude of the vibrating diaphragm connected with the movable arm of the S-shaped balance armature is doubled, and the sound pressure level of the moving iron loudspeaker can be remarkably improved.
Description
Technical Field
The invention relates to the technical field of acoustics, in particular to a moving iron unit.
Background
With the development of technology, the sound pressure level requirements of the moving iron unit are also increasing. The traditional single-acting iron unit comprises a vibrating diaphragm and a balance armature connected with the vibrating diaphragm to drive the vibrating diaphragm to vibrate. In the moving iron unit structure of the related art, the shape of the balance armature is U-shaped, but the amplitude of the balance armature of the U-shaped structure is limited, so that the sound pressure level of the moving iron unit is limited, and more sound pressure level requirements of users cannot be met.
Disclosure of Invention
The invention aims to provide an improved moving iron unit.
The technical scheme adopted for solving the technical problems is as follows: the dynamic iron unit comprises a shell, a vibrating diaphragm arranged in the shell and a driving assembly connected with the vibrating diaphragm to drive the vibrating diaphragm to vibrate, wherein the driving assembly comprises a magnet, a balance armature and a coil sleeved on the balance armature.
Preferably, in the moving iron unit according to the present invention, the S-shaped balance armature includes a first portion, a second portion, a third portion, a first connector, and a second connector;
the first, second and third portions being disposed in generally parallel spaced relation to one another, the second portion being disposed between the first and third portions;
the first end of the first portion is connected with the first end of the second portion through the first connector, and the second end of the second portion is connected with the first end of the third portion through the second connector, so that the first portion, the second portion, the third portion, the first connector and the second connector together form an S-shaped balanced armature.
Preferably, in the moving iron unit according to the present invention, the length of the second portion is greater than the length of the first portion, and the length of the second portion is greater than the length of the third portion.
Preferably, in the moving iron unit according to the present invention, the length of the first portion is equal to the length of the third portion.
Preferably, in the moving iron unit according to the present invention, the length of the first portion is greater than half the length of the second portion, and the length of the third portion is greater than half the length of the second portion.
Preferably, in the moving iron unit according to the present invention, the first portion, the second portion and the third portion are each elongated, and the first connector and the second connector are each arc-shaped.
Preferably, in the moving iron unit according to the present invention, the second end of the first portion is fixed to the housing to form a fixed arm of the S-shaped balanced armature; the second end of the third part is connected with the vibrating diaphragm through a driving rod to form a movable arm of the S-shaped balanced armature;
the magnet comprises a first magnet and a second magnet, the second part comprises two opposite side surfaces, the first magnet and the second magnet are respectively arranged on the two opposite side surfaces in an opposite mode, and the magnetic poles of the first magnet facing the first part are opposite to the magnetic poles of the second magnet facing the third part.
Preferably, in the moving iron unit according to the present invention, the coil is sleeved on the outer periphery of the first portion, or the coil is sleeved on the outer periphery of the third portion.
Preferably, in the moving iron unit according to the present invention, the second end of the first portion is fixed to the housing by a fixing means;
the first magnet and the second magnet are respectively arranged at the middle positions of two opposite side surfaces of the second part.
Preferably, in the moving iron unit of the present invention, two coils are provided, and the two coils are respectively sleeved at the first end of the second part and the second end of the second part;
the two vibrating diaphragms are arranged, and the S-shaped balance armature is positioned between the two vibrating diaphragms; the first part forms a movable arm of the S-shaped balanced armature, and the second end of the first part is connected with one vibrating diaphragm through a driving rod; the third part forms another movable arm of the S-shaped balanced armature, and the second end of the third part is connected with another vibrating diaphragm through another driving rod;
the magnets comprise a first magnet, a second magnet, a third magnet and a fourth magnet;
the second part forms a fixed arm of the S-shaped balance armature and comprises two opposite side surfaces, and the first magnet and the second magnet are respectively arranged on the two opposite side surfaces in an opposite mode and fixed on the shell; and a magnetic pole of the first magnet facing the first portion is opposite to a magnetic pole of the second magnet facing the third portion;
the third magnet is fixedly arranged on one side of the first part, which faces away from the second part, so that the first part is positioned between the first magnet and the third magnet, and the magnetic pole of the third magnet facing the first part is opposite to the magnetic pole of the first magnet facing the first part;
the fourth magnet is fixedly arranged on one side of the third part, which faces away from the second part, so that the third part is positioned between the second magnet and the fourth magnet, and the magnetic pole of the fourth magnet facing the third part is opposite to the magnetic pole of the second magnet facing the third part.
The moving iron unit has the following beneficial effects: according to the moving iron unit, the S-shaped balance armature is designed, after the S-shaped balance armature is magnetized, the vibration amplitude of the movable arm is doubled when the S-shaped balance armature is subjected to the magnetic attraction or repulsion of the magnet, so that the vibration amplitude of the vibrating diaphragm connected with the movable arm of the S-shaped balance armature is doubled, and the sound pressure level of the moving iron loudspeaker can be remarkably improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of the structure of an S-shaped balanced armature in a moving iron unit of the present invention;
fig. 2 is a schematic structural view of a moving iron unit according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a moving iron unit according to a second embodiment of the present invention;
fig. 4 is a schematic structural view of a moving iron unit according to a third embodiment of the present invention;
fig. 5 is a schematic structural view of a moving iron unit according to a fourth embodiment of the present invention;
fig. 6 is a schematic structural view of a moving iron unit according to a fifth embodiment of the present invention.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
As shown in fig. 2-6, the moving iron unit of the present invention includes a housing 7, a diaphragm 8 disposed in the housing 7, and a driving assembly connected to the diaphragm 8 to drive the diaphragm 8 to vibrate. Wherein the driving assembly comprises a magnet, a balanced armature and a coil 6 sleeved on the balanced armature, the balanced armature comprises an S-shaped balanced armature 1, the S-shaped balanced armature 1 comprises a fixed arm and a movable arm, and the movable arm of the S-shaped balanced armature 1 is connected with a vibrating diaphragm 8. After the S-shaped balance armature in the moving iron unit is magnetized, the vibration amplitude of the movable arm is doubled when the S-shaped balance armature is subjected to the magnetic attraction or repulsion of the magnet, so that the vibration amplitude of the vibrating diaphragm connected with the movable arm of the S-shaped balance armature is doubled, and the sound pressure level of the moving iron loudspeaker can be remarkably improved.
The housing 7 is provided with a sound outlet hole 71, and the sound outlet hole 71 may be provided on a side wall or a top of the housing 7, for example, in the first embodiment of fig. 2 and the second embodiment shown in fig. 3, the sound outlet hole 71 is provided on the side wall of the housing 7; in the third embodiment shown in fig. 4 and the fourth embodiment shown in fig. 5, the sound outlet hole 71 is provided at the top of the housing 7.
As shown in fig. 1, the S-shaped balanced armature 1 includes a first portion 11, a second portion 12, a third portion 13, a first connecting body 14, and a second connecting body 15; the first portion 11, the second portion 12 and the third portion 13 are disposed substantially parallel to each other with the second portion 12 disposed between the first portion 11 and the third portion 13; the first end of the first part 11 is connected to the first end of the second part 12 by a first connector 14 and the second end of the second part 12 is connected to the first end of the third part 13 by a second connector 15, such that the first part 11, the second part 12, the third part 13, the first connector 14 and the second connector 15 together form an S-shaped balanced armature.
Preferably, in the moving iron unit of the present invention, the first portion 11, the second portion 12 and the third portion 13 of the S-shaped balance armature are each elongated, the first connecting body 14 and the second connecting body 15 are each arc-shaped, and the first connecting body 14 is bent in a direction away from the first portion 11 and the second portion 12, and the second connecting body 15 is bent in a direction away from the second portion 12 and the third portion 13. Specifically, taking the direction facing fig. 1 as an example, the first portion 11, the second portion 12 and the third portion 13 of the S-shaped balanced armature 1 are sequentially arranged in the order from bottom to top; the first connecting body 14 is positioned on the right to connect the right end of the first portion 11 and the right end of the second portion 12, and the first connecting body 14 is bent in a direction away from the right ends of the first portion 11 and the second portion 12; the second connecting body 15 is located at the left side to connect the left ends of the second portion 12 and the third portion 13, and the second connecting body 15 is bent in a direction away from the left ends of the second portion 12 and the third portion 13.
In the moving iron unit of the present invention, the second portion 12 of the S-shaped balanced armature 1 has a length greater than that of the first portion 11 of the S-shaped balanced armature 1, and the second portion 12 has a length greater than that of the third portion 13. The length of the first portion 11 of the S-shaped balanced armature 1 is equal to the length of the third portion 13. Preferably, in the S-shaped balance armature 1 of the moving iron unit of the present invention, the length of the first portion 11 is greater than half the length of the second portion 12, and the length of the third portion 13 is greater than half the length of the second portion 12. The construction is such that the second end of the first part 11 is located below the first magnet 2 and the second end of the third part 13 is located above the second magnet 3.
As shown in fig. 2-5, the second end of the first portion 11 of the S-shaped balanced armature 1 is fixed to the housing 7, forming a fixed arm of the S-shaped balanced armature 1; the second end of the third portion 13 is connected to the diaphragm 8 via a drive rod 10, forming a movable arm of the S-shaped balanced armature 1. Wherein the second end of the first portion 11 is opposite the first end of the first portion 11 and the second end of the third portion 13 is opposite the first end of the third portion 13. The magnets comprise a first magnet 2 and a second magnet 3, the second part 12 comprising two opposite sides, the first magnet 2 and the second magnet 3 being arranged opposite each other on the two opposite sides, and the first magnet 2 facing the first part 11 has a magnetic pole opposite to the second magnet 3 facing the third part 13. Preferably, the second end of the first portion 11 of the S-shaped balanced armature 1 is fixed to the housing 7 by means of the fixing means 9; the first magnet 2 and the second magnet 3 are respectively disposed at intermediate positions of opposite side surfaces of the second portion 12. It will be appreciated that the first magnet 2 and the second magnet 3 may be fixed to the intermediate positions of the two opposite sides of the second portion 12 by fixing means, respectively, or may be directly fixed to the intermediate positions of the two opposite sides of the second portion 12 by gluing, which is not limited herein. The coil 6 may be sleeved on the outer periphery of the first portion 11, or may be sleeved on the outer periphery of the third portion 13, for example, in the first embodiment of fig. 2 and the third embodiment shown in fig. 4, the coil 6 is sleeved on the outer periphery of the first portion 11; in the second embodiment shown in fig. 3 and the fourth embodiment shown in fig. 5, the coil 6 is sleeved on the outer periphery of the first portion 11.
First to fourth embodiments of the moving iron unit of the present invention are shown in fig. 2 to 5, respectively, and arrows in fig. 2 to 5 indicate the vibration direction of the S-shaped balanced armature 1. In order to better understand the working principle of the first embodiment to the fourth embodiment, the following describes the first embodiment in detail as an example. Referring to fig. 2, the first magnet 2 is connected with its S pole on the side of the second portion 12 facing the first portion 11 and with its N pole facing the first portion 11; the second magnet 3 is connected with its N pole to the side of the second part 12 facing the third part 13 and with its S pole facing the third part 13; the second end of the first part 11, i.e. the left end of the first part 11 shown in fig. 2, is fixed to the fixing means 9 and the second end of the third part 13, i.e. the right end of the third part 13 shown in fig. 2, is connected to the diaphragm 8 via a driving rod 10. When the coil 6 passes alternating current, the S-shaped balanced armature 1 is magnetized, and different magnetic poles are generated at both ends thereof. When the magnetic pole at the second end of the first portion 11 shown in fig. 2 is S-pole and the magnetic pole at the second end of the third portion 13 shown in fig. 2 is N-pole, the second end of the first portion 11 cannot move because the second end of the first portion 11 is fixed on the fixing device 9, the N-pole of the first magnet 2 moves downward due to the magnetic attraction force of the S-pole at the second end of the first portion 11, thereby driving the second magnet 3 to move downward, and the N-pole of the third portion 13 moves in the same direction (downward) due to the magnetic attraction force of the S-pole of the second magnet 3, and the forces in the same direction of the third portion 13 are multiplied; since the second end of the third portion 13 is connected with the diaphragm 8 through the driving rod 10, the stress of the diaphragm 8 connected with the third portion 13 is doubled, so that the amplitude of the diaphragm 8 is doubled, the sound pressure level of the whole moving iron unit is doubled, and the sound pressure level of the moving iron unit is remarkably improved. Similarly, when the current direction of the coil 6 is opposite, the magnetic pole at the second end of the third portion 13 shown in fig. 2 is S-pole, and the magnetic pole at the second end of the first portion 11 shown in fig. 2 is N-pole, the N-pole of the first magnet 2 moves upwards due to the repulsive force of the N-pole at the second end of the first portion 11, so as to drive the second magnet 3 to move upwards, and the third portion 13 moves in the same direction (upwards) due to the repulsive force of the S-pole at the second end of the third portion 13 due to the repulsive force of the S-pole of the second magnet 3, so that the stress of the diaphragm 8 connected with the third portion 13 is doubled, the amplitude of the diaphragm 8 is doubled, the sound pressure level of the whole moving iron unit is doubled, and the sound pressure level of the moving iron unit is remarkably improved.
As shown in fig. 6, in a fifth embodiment of the moving iron unit of the present invention, the moving iron unit is a compound moving iron unit provided with two coils 6 and two diaphragms 8, and the magnets include a first magnet 2, a second magnet 3, a third magnet 4 and a fourth magnet 5. Wherein the two coils 6 are respectively sleeved at the first end of the second part 12 and the second end of the second part 12. The S-shaped balance armature 1 is positioned between the two diaphragms 8; the first part 11 forms a boom of the S-shaped balanced armature 1 and the second end of the first part 11 is connected to one of the diaphragms 8 by a drive rod 10; the third part 13 forms a further arm of the S-shaped balanced armature 1 and the second end of the third part 13 is connected to a further diaphragm 8 via a further drive rod 10; the second part 12 forms a fixed arm of the S-shaped balanced armature 1, the second part 12 comprising two opposite sides, the first magnet 2 and the second magnet 3 being respectively arranged opposite to said two opposite sides of the second part 12 and fixed to the housing 7; and the magnetic pole of the first magnet 2 facing the first portion 11 is opposite to the magnetic pole of the second magnet 3 facing the third portion 13. Preferably, the first magnet 2 and the second magnet 3 are respectively and oppositely connected to the middle position of the two opposite sides of the second part 12 by fixing means 9, and the fixing means 9 are fixedly connected to the housing 7. The third magnet 4 is fixedly arranged on the side of the first part 11 facing away from the second part 12 such that the first part 11 is located between the first magnet 2 and the third magnet 4 and the magnetic pole of the third magnet 4 facing the first part 11 is opposite to the magnetic pole of the first magnet 2 facing the first part 11; the fourth magnet 5 is fixedly arranged on the side of the third portion 13 facing away from the second portion 12 such that the third portion 13 is located between the second magnet 3 and the fourth magnet 5 and the pole of the fourth magnet 5 facing the third portion 13 is opposite to the pole of the second magnet 3 facing the third portion 13. Meanwhile, a sound outlet 71 is provided on each of the upper and lower sides of the housing 7, specifically, a sound outlet 71 is provided on each of the top and bottom of the housing 7, or a sound outlet 71 is provided on each of the upper and lower sides of the side wall of the housing 7.
Referring to fig. 6, the arrow in fig. 6 indicates the vibration direction of the S-shaped balanced armature 1, and the fifth embodiment of the moving iron unit of the present invention operates as follows: the first magnet 2 is connected to the second portion 12 by the fixing means 9 and faces the first portion 11 with its N pole; the second magnet 3 is connected to the second part 12 by means of the fixing means 9 and faces the third part 13 with its S-pole, while the fixing means 9 is fixed to the housing 7; the second end of the first part 11, i.e. the left end of the first part 11 shown in fig. 6, is connected to the diaphragm 8 located below it by means of a driving rod 10, and the second end of the third part 13, i.e. the right end of the third part 13 shown in fig. 6, is connected to the diaphragm 8 located above it by means of a further driving rod 10; while the third magnet 4 faces the first part 11 with its S-face and the fourth magnet 5 faces the third part 13 with its N-face; when the coil 6 passes alternating current, the S-shaped balanced armature 1 is magnetized, and different magnetic poles are generated at both ends thereof. When the magnetic pole of the second end of the third portion 13 shown in fig. 6 is N-pole and the magnetic pole of the second end of the first portion 11 shown in fig. 6 is S-pole, since the first magnet 2 and the second magnet 3 are fixed to the housing 7 while the third magnet 4 and the fourth magnet 5 are also fixedly disposed, none of the first magnet 2, the second magnet 3, the third magnet 4 and the fourth magnet 5 can be moved; the first part 11 moves upwards due to the magnetic attraction force of the second end S pole by the N pole of the first magnet 2, and at the same time the first part 11 moves upwards due to the repulsive force of the second end S pole by the third magnet 4, the forces of the first part 11 in the same direction are doubled, so that the force of the diaphragm 8 connected with the first part 11 is doubled, and the amplitude of the diaphragm 8 is doubled; the third part 13 moves downwards due to the magnetic attraction force of the second end N pole by the second magnet 3S pole, and at the same time, the third part 13 moves downwards due to the repulsive force of the fourth magnet 5N pole, and the forces in the same direction of the third part 13 are doubled, so that the force of the diaphragm 8 connected with the third part 13 is doubled, the amplitude of the diaphragm 8 is doubled, the sound pressure level of the whole moving iron unit is doubled, and the sound pressure level of the moving iron unit is remarkably improved. Similarly, when the current direction of the coil 6 is opposite, the magnetic pole at the second end of the third portion 13 shown in fig. 6 is S-pole, and the magnetic pole at the second end of the first portion 11 shown in fig. 6 is N-pole, the first portion 11 moves downward due to the repulsive force of the N-pole of the second end thereof by the N-pole of the first magnet 2, and at the same time the first portion 11 moves downward due to the N-pole of the second end thereof by the magnetic attractive force of the S-pole of the third magnet 4, the forces in the same direction of the first portion 11 are doubled, so that the force of the diaphragm 8 connected to the first portion 11 is doubled, and the amplitude of the diaphragm 8 is doubled; the third part 13 moves upwards due to the repulsive force of the second end S pole of the third part 13 by the second end S pole of the second magnet 3, and at the same time, the third part 13 moves upwards due to the attractive magnetic force of the second end S pole of the fourth magnet 5 by the N pole of the fourth magnet, and the forces of the third part 13 in the same direction are doubled, so that the forces of the diaphragm 8 connected with the third part 13 are doubled, the amplitude of the diaphragm 8 is doubled, the sound pressure level of the whole moving iron unit is doubled, and the sound pressure level of the moving iron unit is remarkably improved.
It can be understood that the first magnet 2, the second magnet 3, the third magnet 4 and the fourth magnet 5 in the present invention may be installed in the housing 7 when no polarity exists, the moving iron unit is then placed under an external strong magnetic field after installation, and the first magnet 2, the second magnet 3, the third magnet 4 and the fourth magnet 5 are magnetized by the magnetic field, so that the first magnet 2, the second magnet 3, the third magnet 4 and the fourth magnet 5 have magnetism, and the magnetic poles of the four magnets are arranged in the same way.
In summary, the moving iron unit of the present invention is designed with the S-shaped balanced armature, and after the S-shaped balanced armature is magnetized, the vibration amplitude of the movable arm is doubled when the moving iron unit is subjected to the magnetic attraction or repulsion of the magnet, so that the vibration amplitude of the vibrating diaphragm connected with the movable arm of the S-shaped balanced armature is doubled, and the sound pressure level of the whole moving iron unit can be significantly improved.
It is to be understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above technical features can be freely combined, and several variations and modifications can be made without departing from the scope of the invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (7)
1. The movable iron unit comprises a shell (7), a vibrating diaphragm (8) arranged in the shell (7) and a driving assembly connected with the vibrating diaphragm (8) to drive the vibrating diaphragm (8) to vibrate, wherein the driving assembly comprises a magnet, a balance armature and a coil (6) sleeved on the balance armature; the vibrating diaphragm is characterized in that the balanced armature comprises an S-shaped balanced armature (1), the S-shaped balanced armature (1) comprises a fixed arm and a movable arm, and the movable arm of the S-shaped balanced armature (1) is connected with the vibrating diaphragm (8);
the S-shaped balanced armature (1) comprises a first part (11), a second part (12), a third part (13), a first connecting body (14) and a second connecting body (15);
-said first portion (11), second portion (12) and third portion (13) being arranged substantially parallel and spaced apart from each other, said second portion (12) being arranged between said first portion (11) and third portion (13);
-a first end of the first part (11) is connected to a first end of the second part (12) by means of the first connecting body (14), and a second end of the second part (12) is connected to a first end of the third part (13) by means of the second connecting body (15), such that the first part (11), the second part (12), the third part (13), the first connecting body (14) and the second connecting body (15) together form an S-shaped balanced armature;
the second end of the first part (11) is fixed on the shell (7) to form a fixed arm of the S-shaped balance armature (1); the second end of the third part (13) is connected with the vibrating diaphragm (8) through a driving rod (10) to form a movable arm of the S-shaped balanced armature (1);
the magnet comprises a first magnet (2) and a second magnet (3), the second part (12) comprises two opposite sides, the first magnet (2) and the second magnet (3) are respectively arranged on the two opposite sides in an opposite way, and the magnetic pole of the first magnet (2) facing the first part (11) is opposite to the magnetic pole of the second magnet (3) facing the third part (13).
2. A moving iron unit according to claim 1, characterized in that the length of the second portion (12) is greater than the length of the first portion (11), the length of the second portion (12) being greater than the length of the third portion (13).
3. Moving iron unit according to claim 2, characterized in that the length of the first portion (11) is equal to the length of the third portion (13).
4. A moving iron unit according to claim 2, characterized in that the length of the first portion (11) is greater than half the length of the second portion (12), and the length of the third portion (13) is greater than half the length of the second portion (12).
5. The moving iron unit according to claim 1, wherein the first portion (11), the second portion (12) and the third portion (13) are each elongated, and the first connecting body (14) and the second connecting body (15) are each arc-shaped.
6. A moving iron unit according to claim 1, characterized in that the coil (6) is sleeved on the outer periphery of the first part (11) or the coil (6) is sleeved on the outer periphery of the third part (13).
7. A moving iron unit according to claim 1, characterized in that the second end of the first part (11) is fixed to the housing (7) by fixing means (9);
the first magnet (2) and the second magnet (3) are respectively arranged at the middle positions of two opposite side surfaces of the second part (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672345.XA CN108574920B (en) | 2018-06-26 | 2018-06-26 | Moving iron unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810672345.XA CN108574920B (en) | 2018-06-26 | 2018-06-26 | Moving iron unit |
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| Publication Number | Publication Date |
|---|---|
| CN108574920A CN108574920A (en) | 2018-09-25 |
| CN108574920B true CN108574920B (en) | 2024-03-29 |
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| CN201810672345.XA Active CN108574920B (en) | 2018-06-26 | 2018-06-26 | Moving iron unit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111372172A (en) * | 2020-04-09 | 2020-07-03 | 常州阿木奇声学科技有限公司 | Balanced armature device |
| CN115314812A (en) * | 2022-07-07 | 2022-11-08 | 中科声特美(苏州)声学科技有限公司 | Double-diaphragm telephone receiver and electronic equipment |
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| CN106604187A (en) * | 2017-01-06 | 2017-04-26 | 苏州新吴光电科技有限公司 | Receiver having dual vibration membranes |
| CN106851507A (en) * | 2017-03-03 | 2017-06-13 | 万魔声学科技有限公司 | Audio unit and its audio driven mechanism |
| CN107820178A (en) * | 2017-11-24 | 2018-03-20 | 苏州逸巛声学科技有限公司 | A kind of receiver |
| CN208337873U (en) * | 2018-06-26 | 2019-01-04 | 常州阿木奇声学科技有限公司 | A kind of moving iron unit |
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| CN103037271B (en) * | 2011-09-30 | 2016-08-17 | 苏州恒听电子有限公司 | Voice tube device for Minitype speaker device |
| DK2914018T3 (en) * | 2014-02-26 | 2017-01-30 | Sonion Nederland Bv | Speaker, luminaire and method |
| US20160249136A1 (en) * | 2015-02-21 | 2016-08-25 | Dexin Corporation | Loudspeaker and loudspeaker driver |
| TW201813417A (en) * | 2016-09-20 | 2018-04-01 | 固昌通訊股份有限公司 | Planar speaker unit |
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| CN202183858U (en) * | 2011-08-25 | 2012-04-04 | 苏州恒听电子有限公司 | Earphone moving-iron unit with improved structure |
| CN202889609U (en) * | 2012-09-24 | 2013-04-17 | 富祐鴻科技股份有限公司 | Improved elastic wave structure for thin type loudspeaker |
| CN106604187A (en) * | 2017-01-06 | 2017-04-26 | 苏州新吴光电科技有限公司 | Receiver having dual vibration membranes |
| CN106851507A (en) * | 2017-03-03 | 2017-06-13 | 万魔声学科技有限公司 | Audio unit and its audio driven mechanism |
| CN107820178A (en) * | 2017-11-24 | 2018-03-20 | 苏州逸巛声学科技有限公司 | A kind of receiver |
| CN208337873U (en) * | 2018-06-26 | 2019-01-04 | 常州阿木奇声学科技有限公司 | A kind of moving iron unit |
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| CN108574920A (en) | 2018-09-25 |
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