CN218473385U

CN218473385U - Coaxial loudspeaker

Info

Publication number: CN218473385U
Application number: CN202222309035.6U
Authority: CN
Inventors: 任璋; 钟志威
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: 2023-02-10
Anticipated expiration: 2032-08-30

Abstract

The utility model provides a coaxial loudspeaker, including the basin frame, be fixed in the magnetic circuit of basin frame below, be fixed in the inboard first vibration system of basin frame, be fixed in the second vibration system in the basin frame 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, coaxial loudspeaker still include with first voice coil loudspeaker voice coil electric connection's first circuit board, support the inserts of first circuit board and inlay the first terminal of locating first circuit board and external circuit connection in the inserts, first circuit board butt is kept away from in first voice coil loudspeaker voice coil the surface of first vibrating diaphragm. This coaxial speaker bass, high pitch form coaxial full frequency band speaker, provide high-quality audio, and the amplitude of the multiplicable first voice coil loudspeaker voice coil of the setting of first circuit board, coaxial speaker can also realize the receiver function.

Description

Coaxial loudspeaker

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion 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 high pitch loudspeaker unit and the low pitch loudspeaker unit of the coaxial loudspeaker can be positioned on the front side of the coaxial loudspeaker, namely the sound producing directions of the two loudspeaker units are the same, and also can be positioned on the front side and the back side of the coaxial loudspeaker, namely the sound producing directions of the two loudspeaker units are different.

Coaxial loudspeaker's among the related art tweeter unit generally is located the inboard of woofer unit, the lead wire lug connection of the high pitch voice coil loudspeaker voice coil in the tweeter unit to be connected with external circuit through this terminal, however, in coaxial loudspeaker's use, the high pitch voice coil loudspeaker voice coil is only with high pitch vibrating diaphragm adhesive fixation, because lack the support, its vibration is more unstable, and the lead wire of high pitch voice coil loudspeaker voice coil is direct with the terminal welding, in the vibration process of high pitch voice coil loudspeaker voice coil, because pull very easily with terminal disconnection, lead to coaxial loudspeaker's performance unstability.

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 compact structure is stable and have coaxial speaker of receiver function concurrently.

In order to achieve the above object, the present invention provides a coaxial speaker, comprising a frame, a magnetic circuit system fixed below the frame, a first vibration system fixed inside the frame, and a second vibration system fixed outside the frame and surrounding the first vibration system, wherein the first vibration system and the second vibration system are coaxially arranged, the first vibration system comprises a first vibrating diaphragm and a first voice coil for driving the first vibrating diaphragm to vibrate and generate sound, the second vibration system comprises a second vibrating diaphragm and a second voice coil for driving the second vibrating diaphragm to vibrate and generate sound, the magnetic circuit system is provided with a first magnetic gap and a second magnetic gap positioned outside the first magnetic gap, at least part of the first voice coil is inserted into the first magnetic gap, at least part of the second voice coil is inserted into the second magnetic gap, the coaxial loudspeaker further comprises a first circuit board which is electrically connected with the first voice coil and is in a flat plate shape, an insert supporting the first circuit board and a first terminal which is embedded in the insert and is used for connecting the first circuit board with an external circuit, and the first circuit board is abutted against the surface of the first voice coil, which is far away from the first diaphragm.

Preferably, the magnetic circuit system includes a magnetic conductive member, the magnetic conductive member includes a first bottom wall enclosing a flat plate shape and forming a first through hole, and a pair of first side walls oppositely arranged and formed by bending and extending from the first bottom wall, and the first circuit board is disposed between the pair of first side walls.

Preferably, the two first side wall portions are arranged in a staggered manner so that a projection portion of one of the two first side walls in a direction perpendicular to a vibration direction of the coaxial speaker falls outside the other first side wall.

Preferably, the magnetic circuit system further includes a first magnetic steel stacked on one side of the first bottom wall close to the first diaphragm, a second magnetic steel stacked on the other side of the first bottom wall, and a magnetic bowl for bearing the second magnetic steel, the magnetic bowl includes a second bottom wall enclosing a second through hole and a second side wall formed by bending and extending one side of the second through hole away from the second bottom wall, the first magnetic gap is formed between the first magnetic steel and the first side wall of the magnetic conductive member, and the second magnetic gap is formed between the first magnetic steel, the first bottom wall, the second magnetic steel and the second side wall of the magnetic bowl.

Preferably, the insert extends from the second through hole of the magnetic bowl and penetrates through the first through hole of the magnetic conduction member to extend to a position between the pair of first side walls, and the first circuit board comprises a first fixed end stacked on the top of the insert, a second fixed end elastically supporting the lower end of the first voice coil and an elastic connection portion connecting the first fixed end and the second fixed end.

Preferably, the first voice coil is a rounded rectangle, and the elastic connection portion of the first circuit board extends in a bending manner along the long axis direction.

Preferably, the first circuit board further includes a land portion disposed on the second fixing end, the land portion is located inside the first voice coil, and the first voice coil includes a lead wire soldered to the land portion.

Preferably, the insert comprises a first step portion and a second step portion located on the first step portion, the second magnetic steel portion is arranged on the first step portion in a stacked manner, and the first bottom wall portion of the magnetic conduction member is arranged on the second step portion in a stacked manner.

Preferably, the coaxial speaker further includes a support frame and an elastic component connected to the second vibration system and the support frame, the elastic component includes a second circuit board and a support diaphragm connected to the second circuit board, and the second voice coil is electrically connected to the second circuit board.

Preferably, the magnetic bowl further comprises an extension wall formed by bending and extending one end of the second side wall far away from the second bottom wall, and the extension wall is fixedly connected with the support frame.

Compared with the prior art, the utility model discloses a coaxial loudspeaker, include the basin frame, be fixed in the magnetic circuit of basin frame below, be fixed in the inboard first vibration system of basin frame, be fixed in the basin frame outside just encircles the second vibration system of first vibration system setting, 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, coaxial loudspeaker still include with first voice coil loudspeaker voice coil electric connection is flat-plate-shaped first circuit board, supports the inserts of first circuit board and inlays and locates will in the inserts first terminal of first circuit board and external circuit connection, first butt is located the surface of first vibrating diaphragm 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 the high-quality audio, simultaneously because the design of flat first circuit board makes first vibrating diaphragm can further support, and the amplitude increases simultaneously, and this first vibration system can be used as the receiver function again, has realized the expansion of a device multiple use.

[ 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 schematic perspective view of another angle of the coaxial speaker shown in fig. 1;

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

fig. 4 is an exploded view of part of the components 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 an exploded view of yet another 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 ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 comprises a frame 1, a magnetic circuit system 2 fixed on the frame 1, a first vibration system 3 fixed on the inner side of the frame 1, a second vibration system 4 fixed on the outer side of the frame 1, an insert 5, a first circuit board 6, a support frame 7, an elastic component 8, and a cover 9 covering the first vibration system 3 and the second vibration system 4, wherein the second vibration system 4 surrounds the outer side of the first vibration system 3 and is coaxially disposed with the first vibration system 3.

The periphery of the basin frame 1 is approximately rectangular, and the basin frame comprises an inner side wall 11, an outer side wall 12 opposite to the inner side wall 11 and a top wall 13 connected with the inner side wall 11 and the outer side wall 12, wherein the first vibration system 3 is fixed on the inner side wall 11 of the basin frame, the second vibration system 4 is fixed on the outer side wall 12 of the basin frame, and the cover body 9 partially abuts against the top wall 13.

The magnetic circuit system 2 comprises a magnetic conduction member 21, a first magnetic steel 22 arranged on one side of the magnetic conduction member 21, a second magnetic steel 23 arranged on the other side of the magnetic conduction member 21, a magnetic bowl 24 bearing the second magnetic steel 23, and a pole core 25 covering and arranged above the first magnetic steel 22. The magnetic conductive member 21 includes a first bottom wall 212 enclosing a first through hole 211 and a pair of first side walls 213 bent and extended from the first bottom wall 212 and disposed opposite to each other, and the first circuit board 6 is disposed between the pair of first side walls 213. As shown in fig. 5, the two first sidewalls 213 are partially offset so that the projection of one 213 of the two first sidewalls 213 in the direction perpendicular to the vibration direction of the coaxial speaker 100 falls outside the other one 213. First magnet steel 22 is folded and is located first diapire 212 is close to first vibration system 3 one side, second magnet steel 23 is folded and is located first diapire 212 is kept away from first vibration system 3 one side, first magnet steel 22 with second magnet steel 23 is coaxial and just to setting up. The first magnetic steel 22 and the second magnetic steel 23 are magnetized along the vibration direction of the coaxial loudspeaker 100, and the first magnetic steel 22 and the second magnetic steel 23 are oppositely arranged in the same pole. First magnet steel 22 is close to the outward flange on second vibration system 4's surface is equipped with tangent plane 221, first magnet steel 22 is equipped with first perforation 222, second magnet steel 23 is equipped with second perforation 231, first lateral wall 213 extends to in the first perforation 222.

The lower surface of the magnetic bowl 24 is flush with the lower surface of the insert 5. The magnetic bowl 24 includes a second bottom wall 242 enclosing a second through hole 241, a second side wall 243 formed by bending and extending from one side of the second bottom wall 242 away from the second through hole 241, and an extending wall 244 formed by bending and extending from one end of the second side wall 243 away from the second bottom wall 241, wherein the extending wall 244 is fixedly connected with the support frame 7. First magnet steel 22, pole piece 25 with form between the first lateral wall 213 of magnetic conduction member 21 first magnetic gap 26, first magnet steel 22, first diapire 212, second magnet steel 23 with form between the second lateral wall 243 of magnetic bowl 24 second magnetic gap 27, second magnetic gap 27 encloses to be located the first magnetic gap 26 outside.

The pole piece 25 is provided with a third through hole 251, and the first sidewall 213 further extends into the third through hole 251.

The first vibration system 3 includes a first diaphragm 31 and a first voice coil 32 for driving the first diaphragm 31 to vibrate and generate sound, the first voice coil 32 is a rounded rectangle, at least a portion of the first voice coil 32 is inserted into the first magnetic gap 26, the first voice coil 31 includes a lead 310, the first diaphragm 31 can be used for high-pitch sound generation and can also be used as a receiver to work, and the sound generation direction of the first diaphragm is upward along the vibration direction. The first diaphragm 31 includes a first dome 311 and a first ring 312 surrounding the first dome 311, the first dome 311 includes a first dome portion 3111 disposed above the first ring 312 and a second dome portion 3112 disposed below the first ring 312, the first dome portion 3111 is a flat plate-shaped structure, and the second dome portion 3112 is a hollow ring-shaped structure. First dog-ear 312 is hollow ring structure, just first dog-ear 312 is along vibration direction undercut's structure, the outward flange of first dog-ear 312 is equipped with first fixed part 313, and the inward flange is equipped with second fixed part 314, first fixed part 313 laminate in the roof 13 and the partial inside wall 11 of basin frame 1, just first fixed part 313 laminate in the partial centre gripping of basin frame 1 roof 13 in roof 13 reaches between the lid 9, first ball top portion 3111 laminate in with the upper surface of second fixed part 314, second ball top portion 3112 laminate in with the lower surface of second fixed part 314, and press from both sides establish with second fixed part 314 with between the first voice coil 32.

Second vibration system 4 includes second vibrating diaphragm 41, drive second voice coil 42 and connection that second vibrating diaphragm 41 vibrates the sound second voice coil 42, second voice coil 42 is the fillet rectangle, second voice coil 42 at least part insert locate in the second magnetic gap 27, second vibrating diaphragm 41 can be used to the bass sound production, and its vocal direction is upwards along the vibration direction. The second diaphragm 41 includes a second corrugated rim 411 and a third corrugated rim 412 surrounding the second corrugated rim 411 and spaced from the second corrugated rim 411. The second folding ring 411 and the third folding ring 412 are both hollow ring structures, the second folding ring 411 is a structure protruding upwards along the vibration direction, and the third folding ring 412 is a structure recessed downwards along the vibration direction. The voice coil bobbin 43 connects the second and

third flanges

411, 412 and the second voice coil 42. One end of the second folding ring 411 close to the first diaphragm 31 is fixed on the outer sidewall 12 of the frame 1 or/and the first magnetic steel 22, and the third folding ring 412 includes a third fixing portion 4121.

The insert 5 extends from the second through hole 241 of the magnetic bowl 24, sequentially passes through the second through hole 231 of the second magnetic steel 23 and the first through hole 211 of the magnetic conductive member 21, and extends to a position between the pair of first side walls 213. The insert 5 comprises a first step portion 51 and a second step portion 52 located on the first step portion 51, the second magnetic steel 22 is partially overlapped on the first step portion 51, and the first bottom wall 212 of the magnetic conductive member 21 is partially overlapped on the second step portion 52. The insert 5 is provided with a first terminal 91 for connecting the first circuit board 6 with an external circuit, the first terminal 91 is connected with the first circuit board 6, and the first voice coil 32 is electrically connected with the first circuit board 6 through the first terminal 91. The insert 5 is provided with a leakage channel 53 running through it.

The first circuit board 6 is supported and fixed on the insert 5, and the first circuit board 6 abuts against the surface of the first voice coil 32 far away from the first diaphragm 31. The first circuit board 6 includes a first fixed end 61 stacked on the top of the insert 5, a second fixed end 62 elastically supporting the lower end of the first voice coil 31, an elastic connecting portion 63 connecting the first fixed end 61 and the second fixed end 62, and a pad portion 64 disposed on the second fixed end 62, wherein the pad portion 64 is located on the inner side of the first voice coil 31, and the lead 310 of the first voice coil 31 is welded to the pad portion 64. The elastic connection part 63 of the first circuit board 6 extends along the long axis direction in a continuous S-shaped curve manner to increase the length of the force arm of the first circuit board 6, and the first voice coil 31 is elastically supported while the amplitude of the first voice coil 31 can be further increased, and the first side wall 213 is partially staggered to make the outer side of the first side wall 213 form a space for the elastic connection part 63 to move.

The supporting frame 7 is an annular steel ring, the third fixing portion 4121 of the third folded ring 412 is fixedly connected to the supporting frame 7, and specifically, the third fixing portion 4121 covers the upper surface and part of the outer side surface of the supporting frame 7.

Elastic component 8 connects voice coil skeleton 43 with support frame 7, elastic component 8 include second circuit board 81 with the support vibrating diaphragm 82 that second circuit board 81 is connected, second voice coil 42 with second circuit board 81 electric connection, it is specific, coaxial speaker 100 still include with second terminal 92 that second circuit board 81 is connected, second voice coil 42 passes through second terminal 92 with second 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 one end of the bobbin flat plate portion 431 toward the second circuit board 81 and connected to the second circuit board 81, and a second extending portion 433 bent and extended from the other end of the bobbin flat plate portion 431 toward the second voice coil 42 and connected to the second voice coil 42. One end of the skeleton flat plate portion 431 is connected to the second folding ring 411, and the other end is connected to the third folding ring 412.

The cover 9 is provided with a sound-transmitting hole 90 for the sound of the first diaphragm 31 and the second diaphragm 41 to be emitted.

The utility model discloses a coaxial loudspeaker, include the basin frame, be fixed in the magnetic circuit of basin frame below, be fixed in the inboard first vibration system of basin frame, be fixed in the basin frame outside just encircles the second vibration system of first vibration system setting, 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, coaxial loudspeaker still include with first voice coil loudspeaker voice coil electric connection is flat-plate-shaped first circuit board, supports the inserts of first circuit board and inlays and locates in the inserts will first terminal that first circuit board and external circuit are connected, first butt is located the surface of first vibrating diaphragm loudspeaker voice coil 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 the high-quality audio, simultaneously because the design of flat first circuit board makes first vibrating diaphragm can further support, and the amplitude increases simultaneously, and this first vibration system can be used as the receiver function again, has realized the expansion of a device multiple use.

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 basin frame, be fixed in the magnetic circuit of basin frame below, be fixed in the inboard first vibration system of basin frame, be fixed in the basin frame 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 outside the first magnetic gap, first voice coil loudspeaker voice coil at least part is inserted and is located in the first magnetic gap, the second voice coil loudspeaker voice coil at least part is inserted and is located in the second magnetic gap, coaxial loudspeaker voice coil still include with first voice coil loudspeaker voice coil electric connection be flat first circuit board, support the inserts of first circuit board and inlay and locate will in the inserts the first terminal of first circuit board and external circuit connection, first circuit board butt in first voice coil loudspeaker voice coil is kept away from the surface of first vibrating diaphragm.

2. The coaxial speaker of claim 1, wherein the magnetic circuit system comprises a magnetic conductive member, the magnetic conductive member comprises a first bottom wall surrounding a first through hole and a pair of first side walls extending from the first bottom wall, the first side walls being disposed opposite to each other, and the first circuit board is disposed between the pair of first side walls.

3. The coaxial speaker of claim 2, wherein the two first sidewall portions are offset such that a projected portion of one of the two first sidewalls in a direction perpendicular to a vibration direction of the coaxial speaker falls outside the other first sidewall.

4. The coaxial speaker of claim 2, wherein the magnetic circuit system further includes a first magnetic steel stacked on one side of the first bottom wall close to the first diaphragm, a second magnetic steel stacked on the other side of the first bottom wall, and a magnetic bowl for carrying the second magnetic steel, the magnetic bowl includes a second bottom wall enclosing a second through hole and a second sidewall formed by bending and extending from a side of the second bottom wall far from the second through hole, the first magnetic gap is formed between the first magnetic steel and the first sidewall of the magnetic conductive member, and the second magnetic gap is formed between the first magnetic steel, the first bottom wall, the second magnetic steel and the second sidewall of the magnetic bowl.

5. The coaxial speaker of claim 4, wherein the insert extends from the second through hole of the magnetic bowl and through the first through hole of the magnetic conductive member to between the pair of first sidewalls, and the first circuit board includes a first fixing end stacked on top of the insert, a second fixing end elastically supporting a lower end of the first voice coil, and an elastic connecting portion connecting the first fixing end and the second fixing end.

6. The coaxial speaker of claim 5, wherein the first voice coil is in a rounded rectangle shape, and the elastic connection portion of the first circuit board is bent and extended along a long axis direction.

7. The coaxial speaker of claim 6, wherein the first circuit board further comprises a land portion disposed on the second fixed end, the land portion being located inside the first voice coil, the first voice coil comprising a lead wire, the lead wire being soldered to the land portion.

8. The coaxial speaker of claim 4, wherein the insert comprises a first step and a second step on the first step, the second magnetic steel portion is stacked on the first step, and the first bottom wall portion of the magnetic conductive member is stacked on the second step.

9. The coaxial speaker of claim 4, further comprising a support frame, and an elastic component connecting the second vibration system and the support frame, wherein the elastic component comprises a second circuit board and a support diaphragm connected to the second circuit board, and the second voice coil is electrically connected to the second circuit board.

10. The coaxial speaker of claim 9, wherein the magnetic bowl further comprises an extension wall formed by bending and extending from an end of the second side wall far away from the second bottom wall, and the extension wall is fixedly connected with the support frame.