CN220733011U - Balanced armature receiver - Google Patents

Balanced armature receiver Download PDF

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Publication number
CN220733011U
CN220733011U CN202322090566.5U CN202322090566U CN220733011U CN 220733011 U CN220733011 U CN 220733011U CN 202322090566 U CN202322090566 U CN 202322090566U CN 220733011 U CN220733011 U CN 220733011U
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China
Prior art keywords
magnetic conduction
support plate
balanced armature
shell
armature receiver
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CN202322090566.5U
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Chinese (zh)
Inventor
黄环东
张红庆
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Zhongke Shengtemei Suzhou Acoustic Technology Co ltd
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Zhongke Shengtemei Suzhou Acoustic Technology Co ltd
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Abstract

The utility model discloses a balanced armature receiver, comprising: the shell assembly comprises a first shell (1) and a second shell (2) which are connected with each other, and a cavity is formed between the first shell (1) and the second shell (2); the motor assembly is arranged in the cavity and comprises a magnetic conduction assembly, the magnetic conduction assembly comprises a first magnetic conduction piece (51), a second magnetic conduction piece (52) and a magnetic conduction support (53) connected between the first magnetic conduction piece (51) and the second magnetic conduction piece (52), and the magnetic conduction support (53) is connected between the end face of the first shell (1) and the end face of the second shell (2). The balanced armature receiver disclosed by the utility model has better stability.

Description

Balanced armature receiver
Technical Field
The utility model relates to the technical field of receivers, in particular to a balanced armature receiver.
Background
The balanced armature receiver is an acoustic-electric converter, and is commonly used as a sound generating device for converting an electric signal into sound, and is mainly used for earphones, hearing aids, wearable devices capable of generating sound and sound generating units of audible electronic products.
The prior balanced armature receiver has the advantages that the jaw iron is generally of a closed structure in a shape like a Chinese character kou, when the magnet is assembled, the magnet is required to be inserted and fixed in the jaw iron, the magnet is usually required to be completed by auxiliary tools such as inserting sheets, the position of the magnet is difficult to determine, the bad phenomenon of a product is easily caused, and the production cost is increased.
In order to facilitate the positioning and mounting of the magnet, split type jaw iron structures are also adopted in the prior art, namely, two or more jaw irons are spliced to form a jaw shape, and when the magnet is assembled, the magnet can be assembled after being respectively mounted.
However, after two or more flange irons in the prior art are assembled and fixed, only one complete end face is usually connected with the shell, other parts are suspended from the shell, and the parts are usually provided with a plurality of assembled joints, so that the split flange iron structure has higher instability, and the split flange iron structure is damaged by slight impact, which is not beneficial to guaranteeing the reliability and service life of the product.
Accordingly, there is a need for an improvement over the prior art to overcome the deficiencies described in the prior art.
Disclosure of Invention
The utility model aims to provide a balanced armature receiver which has better stability.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a balanced armature receiver comprising:
the shell assembly comprises a first shell and a second shell which are connected with each other, and a cavity is formed between the first shell and the second shell;
the motor assembly is arranged in the cavity and comprises a magnetic conduction assembly, the magnetic conduction assembly comprises a first magnetic conduction piece, a second magnetic conduction piece and a magnetic conduction support connected between the first magnetic conduction piece and the second magnetic conduction piece, and the magnetic conduction support is connected between the end face of the first shell and the end face of the second shell.
Preferably, the magnetic conduction support comprises a first support plate and a second support plate which are oppositely arranged along the width direction of the first shell, a spacing part is formed between the first support plate and the second support plate, and the first magnetic conduction piece and the second magnetic conduction piece are arranged at two ends of the spacing part along the thickness direction.
Preferably, the outer edges of the first support plate and the second support plate are aligned with the outer edges of the end faces of the first shell and/or the second shell.
Preferably, the first magnetic conductive member includes a first plate body and first side wall portions disposed on two sides of the first plate body, the first plate body is disposed opposite to the spacer, and the first side wall portions are respectively connected between the first plate body and the first support plate and between the first plate body and the second support plate.
Preferably, the inner edges of the first support plate and the second support plate are aligned with the inner edges of the two first side wall parts, respectively.
Preferably, the second magnetic conductive member includes a second plate body and second side wall portions disposed opposite to both sides of the second plate body, the second plate body is disposed opposite to the spacer, and the second side wall portions are respectively connected between the second plate body and the second support plate and between the second plate body and the second support plate.
Preferably, the first housing is made of a magnetic conductive material, and the first housing is the second magnetic conductive member.
Preferably, the magnetic conductive bracket further includes a third support plate connected between the first support plate and the second support plate, and the third support plate is disposed at an end of the spacer and connected between an end surface of the first housing and an end surface of the second housing.
Preferably, the motor assembly further comprises a first magnet connected with the first magnetic conductive member and a second magnet connected with the second magnetic conductive member, the first magnet and the second magnet are arranged towards the spacing part, and the size of the first magnet (61) and the second magnet (62) is smaller than the size of the first magnetic conductive member (51) and the second magnetic conductive member (52) in the length direction of the balanced armature receiver.
Preferably, the balanced armature receiver further comprises a vibrating diaphragm assembly arranged in the cavity, the motor assembly further comprises a reed penetrating through the spacing part, and the first magnetic conduction member is provided with a avoidance groove for the driving rod to penetrate through and be connected between the vibrating diaphragm assembly and the reed.
Compared with the prior art, the utility model has the following advantages:
the magnetic conduction assembly comprises the first magnetic conduction piece, the second magnetic conduction piece and the magnetic conduction bracket connected between the first magnetic conduction piece and the second magnetic conduction piece, and the magnetic conduction bracket is connected between the end face of the first shell and the end face of the second shell, so that the first magnetic conduction piece and the second magnetic conduction piece are fixedly connected with the shell assembly through the magnetic conduction bracket respectively, the connection node between the whole magnetic conduction assembly and the shell assembly is increased, the split type flange iron structure is more firmly connected, the stability is better, and the reliability and the service life of a product are improved.
In a preferred embodiment, the second magnetic conductive member is replaced by the first shell made of high magnetic conductive material, so that the thickness of the whole balanced armature receiver can be effectively reduced, and miniaturization is facilitated.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present utility model, and are not particularly limited. Those skilled in the art with access to the teachings of the present utility model can select a variety of possible shapes and scale sizes to practice the present utility model as the case may be. In the drawings:
FIG. 1 is a schematic diagram of a balanced armature receiver in accordance with the present utility model;
FIG. 2 is an exploded view of a balanced armature receiver in one embodiment of the utility model;
FIG. 3 is a cross-sectional view of the balanced armature receiver of FIG. 2 in one view;
FIG. 4 is a cross-sectional view of the balanced armature receiver of FIG. 2 in another view;
FIG. 5 is a schematic diagram of the assembly of the motor assembly of FIG. 2 with a first housing;
fig. 6 is a schematic diagram of the assembly of the magnetic conductive assembly of fig. 2;
FIG. 7 is an exploded view of a balanced armature receiver in another embodiment of the utility model;
FIG. 8 is a cross-sectional view of the balanced armature receiver of FIG. 7 in one view;
FIG. 9 is a schematic diagram of the assembly of the motor assembly of FIG. 7 with the first housing;
FIG. 10 is an exploded view of a balanced armature receiver in another embodiment of the utility model;
FIG. 11 is a schematic view of the assembly of the motor assembly of FIG. 10 with a first housing;
fig. 12 is a schematic view of the first flange iron of fig. 10;
FIG. 13 is an exploded view of a balanced armature receiver in another embodiment of the utility model;
FIG. 14 is a schematic view of the assembly of the motor assembly of FIG. 13 with the first housing;
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, shall fall within the scope of the utility model.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
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 utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 14, a balanced armature speaker according to a preferred embodiment of the present utility model includes a housing assembly, a motor assembly, and a diaphragm assembly 4.
As shown in fig. 1 and 2, the housing assembly includes a first housing 1 and a second housing 2 connected to each other, the first housing 1 including a first bottom wall 11 and a first peripheral side wall 12 connected to the first bottom wall 11, the second housing 2 including a second bottom wall 21 and a second peripheral side wall 22 connected to the second bottom wall 21, the first peripheral side wall 12 and the second peripheral side wall 22 being connected to form a cavity between the first housing 1 and the second housing 2.
The diaphragm assembly 4 is disposed in the cavity and is in sealing connection with the second peripheral sidewall 22 of the second housing 2, thereby dividing the cavity into a front cavity 31 and a rear cavity 32, wherein the front cavity 31 is formed between the diaphragm assembly 4 and the second bottom wall 21, and the rear cavity 32 is formed between the diaphragm assembly 4 and the first bottom wall 11. The second peripheral side wall 22 is provided with a sound outlet hole 23 for communicating the front cavity 31 with the outside, and sound generated by vibration of the diaphragm assembly 4 in the front cavity 31 is transmitted to the outside through the sound outlet hole 23.
As shown in fig. 3, the diaphragm assembly 4 includes a diaphragm 41, a fixing bracket 42, and a membrane 43. Wherein, the fixed bolster is sealed to be fixed in second week lateral wall 22 through the binder, and the one end and the fixed bolster 42 of vibration board 41 adopt hinged joint, and other part and fixed bolster 42 interval setting to make the clearance that forms between other part and the fixed bolster 42 of vibration board 41, membrane 43 covers on vibration board 41, and covers all clearances between vibration board 41 and the fixed bolster 42 at least completely, has the arch runway in clearance region department shaping, thereby ensures that vibration board 41 can freely vibrate along the hinge department, thereby drives vibrating diaphragm 43 vibration sound production.
As shown in fig. 4 and 5, the motor assembly is disposed within the rear cavity 32 and includes a magnetically permeable assembly, a magnet assembly, a reed 7, a coil 8, and a drive rod 9.
As shown in fig. 3, the magnetic conductive assembly has a first through hole, the magnet assembly is disposed in the first through hole, and the magnet assembly and the magnetic conductive assembly together form a second through hole 63, the coil 8 has a third through hole 81, the coil 8 is connected with the magnetic conductive assembly and/or the magnet assembly and is arranged along the length direction of the first housing 1, preferably, the third through hole 81 and the second through hole 63 are coaxially disposed, so as to improve the vibration precision of the motor assembly. The part of the reed 7 is movably penetrated in the third through hole 81 and the second through hole 63 in sequence, and when the coil 8 is electrified, the reed 7 can be magnetized, so that the part of the reed 7 interacts under the action of the magnetic field of the magnet assembly, and the part of the reed 7 vibrates. The driving rod 9 is connected between a part of the reed 7 and the vibration plate 41, so that the vibration plate 41 can be driven to vibrate to generate sound.
As shown in fig. 6, the magnetic conduction assembly includes a first magnetic conduction member 51, a second magnetic conduction member 52, and a magnetic conduction bracket 53 connected between the first magnetic conduction member 51 and the second magnetic conduction member 52, where the first magnetic conduction member 51, the second magnetic conduction member 52, and the magnetic conduction bracket 53 are made of high magnetic conduction materials. The magnetically permeable bracket 53 is connected between the end face of the first peripheral side wall 12 of the first housing 1 and the end face of the second peripheral side wall 22 of the second housing 2. The magnetically permeable support 53 includes at least two support plates, namely a first support plate 531 and a second support plate 532, where the first support plate 531 and the second support plate 532 are disposed opposite to each other along the width direction of the first housing 1, and a spacing portion 533 is formed between the first support plate 531 and the second support plate 532, and the spacing portion 533 is located in the second through hole 63 and is used for movably penetrating the reed 7. Preferably, to facilitate packaging of the housing assembly and to enhance the overall appearance of the balanced armature receiver, the outer edges of the first and second support plates 531, 532 are aligned with the outer edges of the end faces of the first and/or second housings 1, 2. Further, the magnetically permeable support 53 may further include a third support 534 connected between the first support 531 and the second support 532, where the third support 534 is disposed at an end of the spacer 533 and connected between the end surface of the first peripheral sidewall 12 of the first housing 1 and the end surface of the second peripheral sidewall 22 of the second housing 2, i.e. the magnetically permeable support 53 is generally in a "U" shape, and may be assembled to further accommodate positioning of the first support 531 and the second support 532. Similarly, the outer edge of the third support 534 is also aligned with the outer edge of the end face of the first casing 1 and/or the second casing 2.
The first magnetic conductive member 51 is preferably an independent jaw iron, and includes a first plate body 511 and first side wall portions 512 disposed opposite to the two sides of the first plate body 511, i.e. the first magnetic conductive member 51 is generally in a "U" shape. The first plate body 511 is disposed opposite to the spacing portion 533, and the first side wall portion 512 is connected between the first plate body 511 and the first support plate 531 and between the first plate body 511 and the second support plate 532, respectively. Preferably, the inner edges of the first support plate 531 and the second support plate 532 are aligned with the inner edges of the two first side wall portions 512, respectively, for positioning while the spacer 533 has a space enough to accommodate the reed 7.
As shown in fig. 2 to 6, in one embodiment, the second magnetic conductive member 52 is also made of independent jaw iron and includes a second plate 521 and second side wall portions 522 disposed opposite to the second plate 521, that is, the second magnetic conductive member 52 is also generally U-shaped. The second plate body 521 is disposed opposite the spacing portion 533, and the second side wall portion 522 is connected between the second plate body 521 and the second support plate 532 and between the second plate body 521 and the second support plate 532, respectively. Preferably, the inner edges of the first and second support plates 531 and 532 are aligned with the inner edges of the two second side wall portions 522, respectively, for positioning while providing the spacer 533 with a space sufficient to accommodate the reed 7. At this time, a magnetic conductive circuit is formed around the second plate body 521, the second side wall 522, the first support plate 531, the second support plate 532, the first side wall 512, and the first plate body 511. Further, in order to reduce the occupied volume of the magnetic conduction assembly in the rear cavity 32, the first bottom wall 11 of the first housing 1 may be provided with the avoiding hole 13, so that the second plate portion 521 of the second magnetic conduction member 52 may be embedded in the avoiding hole 13, thereby reducing the thickness of the magnetic conduction assembly in the rear cavity 32.
In another embodiment, as shown in fig. 7 to 9, in order to further reduce the thickness of the magnetic conductive assembly, the first housing 1 is made of a magnetic conductive material, so that the first housing 1, as the second magnetic conductive member 52, forms a magnetic conductive loop with the first support plate 531, the second support plate 532, the first side wall portion 512 and the first plate body portion 511.
The magnet assembly is made of a permanent magnet material and includes a first magnet 61 connected to the first magnetic conductive member 51 and a second magnet 62 connected to the second magnetic conductive member 52, the first magnet 61 and the second magnet 62 are disposed toward the spacer 533, and a second through hole 63 is formed between the first magnet 61 and the second magnet 62. Specifically, the first magnet 61 is attached to the first plate body 511, and the second magnet 62 is attached to the second plate body 521 or to the first bottom wall 11. Preferably, as shown in fig. 10 to 14, the first magnet 61 and the second magnet 62 have a smaller size than the first magnetic conductive member 51 and the second magnetic conductive member (52) in the length direction of the balanced armature receiver. In this way, under the condition that the thicknesses of the first magnetic conduction piece 51 and the second magnetic conduction piece 52 are not increased, the magnetic conduction sectional areas of the first magnetic conduction piece 51 and the second magnetic conduction piece 52 are increased, so that higher saturation magnetic conduction can be realized, and the problem of saturation distortion is solved.
The reed 7 is also made of high magnetic conductive material and comprises a fixing part 71 and a vibrating part 72 with one end connected with the fixing part 71, wherein the fixing part 71 is connected between the end face of the first peripheral side wall 12 of the first shell 1 and the end face of the second peripheral side wall 22 of the second shell 2, and the vibrating part 72 is movably penetrated in the third through hole 81 and the second through hole 63.
The vibration part 72 is connected to the vibration plate 41 through the driving rod 9, and the driving rod 9 may be disposed at both ends of the second through hole 63. In one embodiment, as shown in fig. 10 to 12, the driving rod 9 is disposed at an end of the second through hole 63 away from the coil 8, and in order to control the overall length of the motor assembly, it is preferable that a avoiding groove 513 is formed in the first plate body 511 of the first magnetic conductive member 51 for the driving rod 9 to pass through, where the avoiding groove 513 is disposed away from the coil 8. In another embodiment, as shown in fig. 13 and 14, the driving rod 9 is disposed at one end of the second through hole 63 near the coil 8, and the first plate body 511 of the first magnetic conductive member 51 is provided with a avoiding groove 513 for the driving rod 9 to pass through, where the avoiding groove 513 is disposed near the coil 8.
Due to the existence of the magnetic conductive support 53, a certain gap exists between the first housing 1 and the second housing 2, so that the housing assembly is packaged conveniently and the whole appearance of the balanced armature receiver is beautified, the fixing portion 71 can be filled in the gap, and the outer edge of the fixing portion 71 is aligned with the outer edge of the first housing 1 and/or the second housing 2. Meanwhile, in order to ensure free vibration of the vibration part 72, the fixing part 71 and the vibration part 72 are arranged at intervals except for the parts connected with each other.
Further, the coil 8 may be fixed by an adhesive to the magnetic conductive assembly and/or the magnet assembly through one end surface of the coil 8, and may be fixed by an adhesive to the first bottom wall 11 of the first housing 1 through an outer peripheral surface of the coil 8, or may be fixed by an adhesive to the first bottom wall 11 of the first housing 1 through only an outer peripheral surface of the coil 8, which is not limited herein.
It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided will be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but instead should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are incorporated herein by reference for the purpose of completeness. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended to forego such subject matter, nor should the applicant be deemed to have such subject matter not considered to be part of the disclosed subject matter.

Claims (10)

1. A balanced armature receiver, comprising:
the shell assembly comprises a first shell (1) and a second shell (2) which are connected with each other, and a cavity is formed between the first shell (1) and the second shell (2);
the motor assembly is arranged in the cavity and comprises a magnetic conduction assembly, the magnetic conduction assembly comprises a first magnetic conduction piece (51), a second magnetic conduction piece (52) and a magnetic conduction support (53) connected between the first magnetic conduction piece (51) and the second magnetic conduction piece (52), and the magnetic conduction support (53) is connected between the end face of the first shell (1) and the end face of the second shell (2).
2. The balanced armature receiver according to claim 1, wherein the magnetically permeable support (53) includes a first support plate (531) and a second support plate (532) disposed opposite to each other in a width direction of the first housing (1), a spacer (533) is formed between the first support plate (531) and the second support plate (532), and the first magnetically permeable member (51) and the second magnetically permeable member (52) are disposed at both ends of the spacer (533) in a thickness direction.
3. Balanced armature receiver according to claim 2, characterized in that the outer edges of the first and second leg plates (531, 532) are arranged in alignment with the outer edges of the end faces of the first and/or second housings (1, 2).
4. The balanced armature receiver according to claim 2, wherein the first magnetic conductive member (51) comprises a first plate body (511) and first side wall portions (512) disposed opposite to both sides of the first plate body (511), the first plate body (511) and the spacer portion (533) are disposed opposite to each other, and the first side wall portions (512) are respectively connected between the first plate body (511) and the first support plate (531) and between the first plate body (511) and the second support plate (532).
5. The balanced armature receiver according to claim 4, characterized in that the inner edges of the first and second leg plates (531, 532) are arranged in alignment with the inner edges of the two first side wall portions (512), respectively.
6. The balanced armature receiver according to claim 2, wherein the second magnetic conductive member (52) includes a second plate body (521) and second side wall portions (522) disposed opposite to both sides of the second plate body (521), the second plate body (521) being disposed opposite to the spacing portion (533), the second side wall portions (522) being connected between the second plate body (521) and the second support plate (532) and between the second plate body (521) and the second support plate (532), respectively.
7. The balanced armature receiver according to claim 2, characterized in that the first housing (1) is made of magnetically conductive material, the first housing (1) being the second magnetically conductive member (52).
8. The balanced armature receiver according to claim 2, characterized in that the magnetically permeable support (53) further comprises a third support plate (534) connected between the first support plate (531) and the second support plate (532), the third support plate (534) being arranged at an end of the spacer (533) and connected between an end face of the first housing (1) and an end face of the second housing (2).
9. The balanced armature receiver according to claim 2, characterized in that the motor assembly further comprises a first magnet (61) connected to the first magnetically permeable member (51) and a second magnet (62) connected to the second magnetically permeable member (52), the first magnet (61) and the second magnet (62) being disposed toward the spacer (533), the first magnet (61) and the second magnet (62) being smaller in size than the first magnetically permeable member (51) and the second magnetically permeable member (52) in the length direction of the balanced armature receiver.
10. The balanced armature receiver according to claim 9, further comprising a diaphragm assembly (4) disposed in the cavity, the motor assembly further comprising a reed (7) disposed in the spacer (533), the first magnetic conductive member (51) being provided with a recess (513) for a driving rod (9) to be disposed between the diaphragm assembly (4) and the reed (7).
CN202322090566.5U 2023-08-04 2023-08-04 Balanced armature receiver Active CN220733011U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202322090566.5U CN220733011U (en) 2023-08-04 2023-08-04 Balanced armature receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202322090566.5U CN220733011U (en) 2023-08-04 2023-08-04 Balanced armature receiver

Publications (1)

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CN220733011U true CN220733011U (en) 2024-04-05

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Application Number Title Priority Date Filing Date
CN202322090566.5U Active CN220733011U (en) 2023-08-04 2023-08-04 Balanced armature receiver

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CN (1) CN220733011U (en)

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