CN218570453U

CN218570453U - Coaxial loudspeaker

Info

Publication number: CN218570453U
Application number: CN202222282592.3U
Authority: CN
Inventors: 任璋; 钟志威; 宋威
Original assignee: AAC Microtech Changzhou Co Ltd
Current assignee: AAC Microtech Changzhou Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2023-03-03
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a coaxial loudspeaker, including the support ring, magnetic circuit, be located the inboard first vibration system of support ring and be located the second vibration system in the support ring outside, first vibration system and the coaxial setting of second vibration system, first vibration system includes first vibrating diaphragm and first voice coil loudspeaker voice coil, second vibration system includes second vibrating diaphragm and second voice coil loudspeaker voice coil, first vibrating diaphragm is used for the high pitch sound production, the second vibrating diaphragm is used for the bass sound production, the support ring include with first vibrating diaphragm fixed connection's first end, with magnetic circuit fixed connection's second end and from the second end along the connecting portion that the direction of outside expansion is connected to first end, first vibrating diaphragm overlaps with the projection part of second vibrating diaphragm on coaxial loudspeaker's vibration side each other. This coaxial speaker bass vibrating diaphragm and high pitch vibrating diaphragm separately-formed, but the membrane material and the thickness of independent adjustment high and low pitch, high pitch vibrating diaphragm design utilizes bass vibrating diaphragm Z to vibration space, has increased vibration area in order to promote the performance.

Description

Coaxial loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic field especially relates to a coaxial loudspeaker.

[ background of the invention ]

The coaxial speaker is a speaker which is integrated with a high pitch speaker unit and a low pitch speaker unit, and the high pitch speaker unit and the low pitch speaker unit are coaxially arranged. The sound sources of the tweeter unit and the woofer unit of the coaxial speaker may be located on the front side of the coaxial speaker, that is, the sound emitting directions of the two speaker units are the same, or may be located on the front side and the back side of the coaxial speaker, that is, the sound emitting directions of the two speaker units are different.

In the related art, the high pitch loudspeaker unit and the low pitch loudspeaker unit of the coaxial loudspeaker are positioned on the same side of the coaxial loudspeaker, and the sound film of the high pitch unit and the sound film of the low pitch unit are both formed by pressing the same material, so that the performance of the product is single and difficult to regulate. And the sound membrane of the high pitch unit and the sound membrane of the bass unit are vibration spaces independent of each other, so that the effective vibration area of the vibration membrane is limited under the control of limited size, and the performance is poor.

Therefore, there is a need to provide a new coaxial speaker to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a coaxial loudspeaker that high bass vibrating diaphragm can be adjusted in a flexible way and vibrating diaphragm vibration area increases.

In order to achieve the above object, the present invention provides a coaxial speaker, comprising a support ring, a magnetic circuit system fixed below the support ring, a first vibration system fixed inside the support ring, and a second vibration system disposed outside the support ring and surrounding the first vibration system, wherein the first vibration system is coaxial with the second vibration system, the first vibration system comprises a first diaphragm and a first voice coil for driving the first diaphragm to vibrate and generate sound, the second vibration system comprises a second diaphragm and a second voice coil for driving the second diaphragm to vibrate and generate sound, magnetic circuit is equipped with first magnetic gap and is located the second magnetic gap in the first magnetic gap outside, first voice coil loudspeaker voice coil at least part is inserted and is located in the first magnetic gap, second voice coil loudspeaker voice coil at least part is inserted and is located in the second magnetic gap, first vibrating diaphragm is used for the high pitch sound production, the second vibrating diaphragm is used for the bass sound production, the support ring include with first vibrating diaphragm fixed connection's first end, with magnetic circuit fixed connection's second end and certainly the second end is connected to along the direction of outside expansion the connecting portion of first end, first vibrating diaphragm with the second vibrating diaphragm is in the projection part of coaxial loudspeaker on the vibration direction overlaps each other.

Preferably, the first diaphragm includes a first dome, a first folded ring surrounding the first dome, and a first fixing portion fixedly connected to the first end of the support ring, the second diaphragm includes a second fixing portion fixed to the support ring and/or the magnetic circuit system, and a second folded ring bent and extended from the second fixing portion, and projection portions of the first folded ring and the second folded ring in the vibration direction of the coaxial speaker overlap each other.

Preferably, the second vibration system includes a connection the second diaphragm with the voice coil framework of the second voice coil, the second diaphragm further includes a ring surrounding the second ring and a third ring arranged at an interval with the second ring, one side of the voice coil framework is connected with the second ring, and the other side is connected with the third ring.

Preferably, the second folding ring and the third folding ring are integrally fixed on the voice coil framework through hot press molding of a silicon rubber material, and the second vibrating diaphragm is fixed on the support ring and/or the magnetic circuit system in a gluing mode.

Preferably, the second folded ring and the third folded ring are fixed to the voice coil framework in an adhesive manner, and the second diaphragm is fixed to the support ring and/or the magnetic circuit system in an adhesive manner.

Preferably, the first diaphragm is fixed to the support ring by gluing.

Preferably, the magnetic circuit system includes a first magnetic steel, a second magnetic steel surrounding the first magnetic steel, a third magnetic steel disposed below the second magnetic steel, a fourth magnetic steel surrounding the third magnetic steel, and a magnetic conductive plate clamped between the second magnetic steel and the third magnetic steel, the first magnetic steel and the second magnetic steel form the first magnetic gap therebetween, and the second magnetic steel, the magnetic conductive plate, and the third magnetic steel are stacked and disposed and form the second magnetic gap between the fourth magnetic steel.

Preferably, the coaxial speaker includes an insert supporting the first magnetic steel and a first flexible circuit board fixed between the insert and the magnetic circuit system, the first voice coil is electrically connected to the first flexible circuit board, the first flexible circuit board includes a positioning portion fixed to the magnetic circuit system, a cantilever extending from the positioning portion, and a joint portion formed on the cantilever, and the insert is partially press-fitted to the positioning portion.

Preferably, the first vibration system further comprises a support frame for connecting the first voice coil with the first flexible circuit board, the support frame comprises a support leg fixed to the joint part of the first flexible circuit board, the support frame is provided with a notch, the first voice coil is provided with a lead, and the lead extends through the notch and is fixed to the lower surface of the joint part of the first flexible circuit board.

Preferably, the insert has an extension wall, and the positioning portion of the first flexible circuit board is fixed to the extension wall.

Compared with the prior art, the utility model discloses a coaxial loudspeaker, include the support ring, be fixed in the magnetic circuit of support ring below, be fixed in the inboard first vibration system of support ring and set up in the support ring outside just encircles the second vibration system that first vibration system set up, first vibration system with the coaxial setting of second vibration system, first vibration system includes first vibrating diaphragm and drive the first voice coil loudspeaker voice coil of first vibrating diaphragm vibration sound production, second vibration system includes second vibrating diaphragm and drive the second voice coil loudspeaker voice coil of second vibrating diaphragm vibration sound production, magnetic circuit is equipped with first magnetic gap and is located the second magnetic gap in the first magnetic gap outside, first voice coil loudspeaker voice coil at least part is inserted and is located in the first magnetic gap, second voice coil loudspeaker voice coil at least part is inserted and is located in the second magnetic gap, first vibrating diaphragm is used for the bass sound production, the support ring include with first vibrating diaphragm fixed connection's first tip, with second tip fixed connection and certainly the second tip of second vibrating diaphragm is connected to along the direction of outside expansion the coaxial loudspeaker voice coil. The utility model discloses a coaxial loudspeaker provides the bass audio through setting up annular bass vibration system, and the treble vibration system sets up in bass vibration system inboard, provides the treble audio, and bass, treble form coaxial full frequency band speaker, provide high-quality audio, and wherein bass vibrating diaphragm and treble vibrating diaphragm can separately design, shaping, can be to the different characteristics of bass and treble, and the membrane material of independent adjustment high-low is with thick, and is more nimble in the use, moreover, bass vibrating diaphragm is in with the treble vibrating diaphragm projection part in coaxial loudspeaker's the vibration side overlaps each other, and the Z of bass vibrating diaphragm is utilized in the treble vibrating diaphragm design to vibration space, has increased the vibration area of vibrating diaphragm with the lifting feature than conventional design.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a schematic perspective view of a coaxial speaker according to the present invention;

fig. 2 is a partially exploded view of the coaxial loudspeaker shown in fig. 1;

fig. 3 is another partially exploded view of the coaxial speaker shown in fig. 1;

fig. 4 is a further partially exploded view of the coaxial loudspeaker shown in fig. 1;

fig. 5 is an exploded view of the coaxial speaker shown in fig. 1;

fig. 6 is a perspective view of a portion of the components of the coaxial speaker shown in fig. 1;

FIG. 7 isbase:Sub>A sectional view taken along line A-A of FIG. 1;

fig. 8 is a sectional view taken along line B-B in fig. 1.

[ detailed description ] A

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-8, the present invention provides a coaxial speaker 100, which includes a support ring 1, a magnetic circuit system 2 fixed below the support ring 1, a first vibration system 3 fixed inside the support ring 1, a second vibration system 4 fixed outside the support ring 1, a frame 5 supporting the second vibration system 4, an insert 6 supporting the magnetic circuit system 2, a first flexible circuit board 7 fixed with the insert 6, and an elastic component 8 fixed with the frame 5, wherein the second vibration system 4 surrounds the first vibration system 3 and is coaxially disposed with the first vibration system 3.

The outer periphery of the support ring 1 is substantially rectangular and shaped like a horn as a whole, the support ring comprises a first end portion 11, a second end portion 12 fixedly connected with the magnetic circuit system 2, and a connecting portion 13 connected to the first end portion 11 in a direction expanding outward from the second end portion 12, and the first end portion 11 is larger than the second end portion 12 in size.

The magnetic circuit system 2 includes a first magnetic steel 21, a second magnetic steel 22 disposed around the first magnetic steel 21, a third magnetic steel 23 disposed below the second magnetic steel 22, a fourth magnetic steel 24 disposed around the third magnetic steel 23, a magnetic conductive plate 25 clamped between the second magnetic steel 22 and the third magnetic steel 23, a first pole core 26 disposed on the first magnetic steel 21, a second pole core 27 disposed on the second magnetic steel 22, a third pole core 28 disposed on the fourth magnetic steel 24, and a magnetic yoke 29 supporting the third magnetic steel 23 and the fourth magnetic steel 24, a first magnetic gap 201 is formed between the first magnetic steel 21, the first pole core 26 and the second magnetic steel 22, the second pole core 27, and a second magnetic gap 202 is formed between the second magnetic steel 22, the magnetic conductive plate 25, and the third magnetic steel 23, which are stacked and the fourth magnetic steel 24, the third pole core 28. The second magnetic gap 202 is disposed outside the first magnetic gap 201.

First magnet steel 21, second magnet steel 22, third magnet steel 23, fourth magnet steel 24 are followed coaxial speaker 100's vibration direction magnetizes, just first magnet steel 21 is opposite with second magnet steel 22's magnetization direction, second magnet steel 22 is opposite with third magnet steel 23's magnetization direction, third magnet steel 23 is opposite with fourth magnet steel 24 magnetization direction. In this embodiment, the second magnetic steel 22, the third magnetic steel 23, the fourth magnetic steel 24, the magnetic conductive plate 25, the second pole core 27, the third pole core 28, and the magnetic yoke 29 are all hollow annular structures, and of course, the fourth magnetic steel 24 may also be a split magnetic steel.

The first vibration system 3 includes a first diaphragm 31, a first voice coil 32 for driving the first diaphragm 31 to vibrate and generate sound, and a support frame 33 for supporting the first voice coil 32, wherein at least a portion of the first voice coil 32 is inserted into the first magnetic gap 201. First vibrating diaphragm 31 formula vibrating diaphragm as an organic whole, the preparation of available conventional press mold mode, first vibrating diaphragm 31 is used for the high pitch sound production, and its vocal direction is upwards for along the vibration direction, is the positive sound production of coaxial speaker 100 promptly. The first diaphragm 31 includes a first dome 311, a first folding ring 312 surrounding the first dome 311, and a first fixing portion 313 fixedly connected to the first end portion 11 of the support ring 1, wherein the first fixing portion 313 is attached to and fixed on the upper surface of the first end portion 11. The first dome 311, the first folding ring 312 and the first fixing portion 313 may be integrally formed by silicone rubber, polyether ether ketone (PEEK), polyethylene naphthalate (PEN) or polyethylene terephthalate (PET). The first diaphragm 31 is glued to the first end 11 of the support ring 1.

The first voice coil 32 has a lead 321.

The support frame 33 includes a support portion 331 for supporting the first voice coil 32 and a support leg 332 at the bottom end of the support frame 33, and the support frame 33 is provided with a notch 333.

Second vibration system 4 includes second vibrating diaphragm 41, drive second voice coil 42 and connection that second vibrating diaphragm 41 vibrates the sound production second vibrating diaphragm 41 with the voice coil skeleton 43 of second voice coil, second vibrating diaphragm 41 is located the below of first vibrating diaphragm 31, promptly second vibrating diaphragm 41 is compared first vibrating diaphragm 31 is closer to yoke 29, second voice coil 42 at least part is inserted and is located in the second magnetic gap 202, second vibrating diaphragm 41 is used for the bass sound production, and its vocal direction is upwards for along the vibration direction, is coaxial speaker 100's positive sound production promptly. The second diaphragm 41 includes a second fixing portion 411 fixed to the support ring 1 and/or the magnetic circuit system 2, a second fold ring 412 extending from the second fixing portion 411 in a bent manner, a third fold ring 413 surrounding the second fold ring 412 and spaced from the second fold ring 412, and a third fixing portion 414 extending from a side of the third fold ring 413 away from the second fold ring 412. One side of the voice coil bobbin 43 is connected to the second hinge 412, and the other side is connected to the third hinge 413. The second fixing portion 411 is attached to and fixed to the upper surface of the second magnetic steel 22, and/or the second fixing portion 411 is attached to and fixed to the outer side surface of the second end portion 12 of the support ring 1.

The second fixing portion 411, the second folded ring 412, the third folded ring 413, and the third fixing portion 414 are integrally fixed to the voice coil bobbin 43 by hot press molding of a silicone rubber material, and then the whole second diaphragm 41 is glued and fixed to the support ring 1 and/or the second magnetic steel 22. Or, the second fixing portion 411, the second folded ring 412, the third folded ring 413, and the third fixing portion 414 are fixed to the voice coil bobbin 43 by gluing, and then the whole second diaphragm 41 is fixed to the support ring 1 and/or the second magnetic steel 22 by gluing.

The first diaphragm 31 and the second diaphragm 41 overlap each other in the projection portion in the vibration direction of the coaxial speaker 100, specifically, the first folding ring 312 overlaps with the projection portion in the vibration direction of the coaxial speaker 100 in the projection portion of the second folding ring 412, so that the first diaphragm 31 occupies a part of the second diaphragm 41 in the Z axis, that is, the space in the vertical vibration direction of the coaxial speaker 100, and the vibration space of the first diaphragm 31 and the second diaphragm 41 can be increased under the limited size requirement, so as to improve the acoustic performance of the coaxial speaker 100.

The yoke 29 is provided with a relief recess 291 corresponding to the second voice coil 42 to provide a sufficient vibration space for the second voice coil 42.

The frame 5 is a hollow ring structure, and the third fixing portion 414 of the second diaphragm 41 is attached to and fixed on the upper surface of the frame 5 and bends to extend and cover part of the outer side surface of the frame 5.

The insert 6 supports the first magnetic steel 22 and the first pole piece 26, and the insert 6 has extending walls 61 symmetrically arranged on both sides.

The first flexible circuit board 7 is fixed between the insert 6 and the magnetic circuit system 2, the first voice coil 32 is electrically connected to the first flexible circuit board 7, and the first flexible circuit board 7 includes a positioning portion 71 fixed to the third magnetic steel 23 of the magnetic circuit system 2, a cantilever 72 extending from the positioning portion 71, and a joint portion 73 formed on the cantilever 72. The extension arm 61 of the insert 6 is press-fitted in the middle of the positioning portion 71, and the positioning portion 71 is attached and fixed to the lower surface of the third magnetic steel 23. The two positioning portions 71 are oppositely arranged along the long axis direction, each positioning portion 71 extends out of two cantilever arms 72, and the opposite cantilever arms 72 on the two positioning portions 71 extend oppositely and are connected to the joint portion 73. The supporting leg 332 of the supporting bracket 33 is supported on the upper surface of the joint portion 73 of the first flexible circuit board 7, and the lead 321 of the first voice coil 32 extends through the notch 333 and is fixed to the lower surface of the joint portion 73 of the first flexible circuit board 7.

Elastic component 8 connect voice coil loudspeaker voice coil skeleton 43 with basin frame 5, elastic component 8 include second flexible circuit board 81 with support diaphragm 82 that second flexible circuit board 81 is connected, second voice coil loudspeaker voice coil 42 with second flexible circuit board 81 electric connection. In the present embodiment, the number of the elastic members 8 is two, and the elastic members are disposed in the short axis direction of the coaxial speaker 100, as the case may be, in other embodiments.

The voice coil bobbin 43 includes a bobbin flat plate portion 431, a first extending portion 432 bent and extended from the bobbin flat plate portion 431 toward the second flexible circuit board 81 and connected to the second flexible circuit board 81, and a second extending portion 433 bent and extended from the bobbin flat plate portion 431 toward the second voice coil 42 and connected to the second voice coil 42. One side of the skeleton flat plate portion 431 is connected to the second folding ring 412, and the other side is connected to the third folding ring 413.

The above embodiments of the present invention are only described, and it should be noted that, for those skilled in the art, modifications can be made without departing from the inventive concept, but these all fall into the protection scope of the present invention.

Claims

1. A coaxial speaker, characterized by: including the support ring, be fixed in the magnetic circuit of support ring below, be fixed in the inboard first vibration system of support ring and set up in the support ring outside just encircles the second vibration system that first vibration system set up, first vibration system with the coaxial setting of second vibration system, first vibration system includes first vibrating diaphragm and drive the first voice coil loudspeaker voice coil of first vibrating diaphragm vibration sound production, second vibration system includes second vibrating diaphragm and drive the second voice coil loudspeaker voice coil of second vibrating diaphragm vibration sound production, magnetic circuit is equipped with first magnetic gap and is located the second magnetic gap in the first magnetic gap outside, first voice coil loudspeaker voice coil at least part is inserted and is located in the first magnetic gap, second voice coil loudspeaker voice coil at least part is inserted and is located in the second magnetic gap, first vibrating diaphragm is used for the high pitch, the second vibrating diaphragm is used for the low pitch sound production, the support ring include with first end of first vibrating diaphragm fixed connection, with magnetic circuit fixed connection's second end and from the second end is connected to along the direction of outside expansion the connecting portion of first end, first vibrating diaphragm with the coaxial vibration projection of second vibrating diaphragm overlaps the projection part each other.

2. The coaxial speaker of claim 1, wherein the first diaphragm includes a first dome, a first fold ring surrounding the first dome, and a first fixing portion fixedly connected to the first end of the support ring, the second diaphragm includes a second fixing portion fixed to the support ring and/or the magnetic circuit system, and a second fold ring extending from the second fixing portion, and a projection of the first fold ring and the second fold ring in a vibration direction of the coaxial speaker overlap each other.

3. The coaxial speaker of claim 2, wherein the second vibration system comprises a voice coil bobbin connecting the second diaphragm to the second voice coil, the second diaphragm further comprising a third hinge surrounding the second hinge and spaced apart from the second hinge, one side of the voice coil bobbin being connected to the second hinge and the other side being connected to the third hinge.

4. The coaxial speaker of claim 3, wherein the second and third folding rings are integrally fixed to the voice coil bobbin by thermal compression molding with silicone rubber material, and the second diaphragm is fixed to the support ring and/or the magnetic circuit system by gluing.

5. The coaxial speaker of claim 3, wherein the second and third folded rings are bonded to the voice coil bobbin, and the second diaphragm is bonded to the support ring and/or the magnetic circuit system.

6. The coaxial loudspeaker of claim 2, wherein the first diaphragm is adhesively secured to the support ring.

7. The coaxial speaker of claim 1, wherein the magnetic circuit system comprises a first magnetic steel, a second magnetic steel disposed around the first magnetic steel, a third magnetic steel disposed below the second magnetic steel, a fourth magnetic steel disposed around the third magnetic steel, and a magnetic conductive plate clamped between the second magnetic steel and the third magnetic steel, wherein the first magnetic gap is formed between the first magnetic steel and the second magnetic steel, the magnetic conductive plate, and the third magnetic steel are stacked and disposed with the fourth magnetic steel to form the second magnetic gap.

8. The coaxial speaker of claim 7, wherein the coaxial speaker comprises an insert supporting the first magnetic steel and a first flexible circuit board fixed between the insert and the magnetic circuit system, the first voice coil is electrically connected to the first flexible circuit board, the first flexible circuit board comprises a positioning portion fixed to the magnetic circuit system, a cantilever extending from the positioning portion, and a joint portion formed on the cantilever, and the insert is partially pressed on the positioning portion.

9. The coaxial speaker of claim 8, wherein the first vibration system further comprises a support bracket connecting the first voice coil and the first flexible circuit board, the support bracket comprising a support foot fixed to the first flexible circuit board joint, the support bracket having a notch, the first voice coil having a lead extending through the notch and fixed to a lower surface of the first flexible circuit board joint.

10. The coaxial speaker of claim 8, wherein the insert has an extension wall to which the positioning portion of the first flexible circuit board is fixed.