CN218473379U

CN218473379U - Sound production device

Info

Publication number: CN218473379U
Application number: CN202222249718.7U
Authority: CN
Inventors: 张龙; 杜希文; 马利鹏
Original assignee: AAC Microtech Changzhou Co Ltd
Current assignee: AAC Microtech Changzhou Co Ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2023-02-10
Anticipated expiration: 2032-08-25

Abstract

The utility model provides a sounding device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system comprises a vibrating diaphragm component and a voice coil inserted in the magnetic gap; the vibrating diaphragm subassembly is including being fixed in the vibrating diaphragm support of basin frame with be fixed in vibrating diaphragm support be used for vibrating the sound production the vibrating diaphragm, the vibrating diaphragm is including having open-ended first plane portion, locating be annular ring portion and locating of being in the outside of first plane portion roll over the ring portion outside and with vibrating diaphragm support fixed connection's connecting portion, the vibrating diaphragm subassembly is still including being fixed in the waterproof ventilated membrane of first plane portion, first plane portion is including keeping away from roll over the first interior limit of ring portion, observe along the vibration direction, first interior limit is located the inboard of voice coil loudspeaker voice coil, just the outward flange of waterproof ventilated membrane is located the outside of voice coil loudspeaker voice coil. Compared with the prior art, the utility model discloses a sound production device waterproof performance is more excellent.

Description

Sounding device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to vocal device of electron audio amplifier product.

[ background of the invention ]

The sound generating device is also called a loudspeaker or a loudspeaker, and is applied to a sound box to convert an audio signal into sound for playing.

The sound production device of the related art comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system with a magnetic gap, wherein the magnetic circuit system drives the vibration system to vibrate and produce sound, and the vibration system comprises a vibrating diaphragm fixed on the basin frame, a ball top attached to the vibrating diaphragm and a voice coil inserted in the magnetic gap.

However, in the sound generating device of the related art, in order to improve the waterproof performance, the rear chamber is set to be airtight, and the air pressure of the rear chamber becomes large after the temperature rises, the loudness is lowered, and the sound generating effect is not good. In the correlation technique, the scheme that the ball top is locally perforated and the waterproof breathable film is adhered is further disclosed, so that the number of parts is large, the assembly is complex, the positions for realizing the waterproof function are large, and the waterproof failure is easily caused.

Therefore, there is a need to provide a new sounding device to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a sound production device that waterproof nature is good and sound production performance is more excellent.

In order to achieve the above object, the present invention provides a sound generating device, which comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively supported on the basin frame, the magnetic circuit system comprises a magnetic gap, and the vibration system comprises a vibrating diaphragm assembly with a vibrating diaphragm and a voice coil inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and generate sound; vibrating diaphragm subassembly is including being fixed in the vibrating diaphragm support of basin frame with be fixed in vibrating diaphragm support be used for vibrating the sound production the vibrating diaphragm, the vibrating diaphragm is including having open-ended first plane portion, locating being in the outside of first plane portion is annular roll over the ring portion and locate roll over the ring portion outside and with vibrating diaphragm support fixed connection's connecting portion, the vibrating diaphragm subassembly is still including being fixed in the waterproof ventilated membrane of first plane portion, first plane portion is including keeping away from roll over the first interior limit of ring portion, observe along the vibration direction, first interior limit is located the inboard of voice coil loudspeaker voice coil, just the outward flange of waterproof ventilated membrane is located the outside of voice coil loudspeaker voice coil

Preferably, the waterproof and breathable film is fixed on one side of the first plane part close to the magnetic circuit system.

Preferably, the diaphragm further includes a second flat portion disposed on a side of the first flat portion close to the magnetic circuit system, the second flat portion is connected to the folded portion and is parallel to the first flat portion, and an outer edge of the waterproof breathable film is sandwiched between the first flat portion and the second flat portion.

Preferably, the magnetic circuit system includes a main magnetic steel and two auxiliary magnetic steels disposed on two sides of the main magnetic steel along a short axis direction of the sound generating device, the auxiliary magnetic steel and the main magnetic steel form the magnetic gap therebetween, and the first plane portion overlaps the main magnetic steel and the auxiliary magnetic steel partially when viewed along a vibration direction.

Preferably, the magnetic circuit system further comprises an upper clamping plate and a lower clamping plate which are fixed on the basin frame, and the auxiliary magnetic steel clamp is arranged between the upper clamping plate and the lower clamping plate.

Preferably, the magnetic circuit system further comprises a pole core, and the main magnetic steel clamp is arranged between the pole core and the lower clamping plate.

Preferably, the diaphragm assembly further includes a sealing ring disposed outside the diaphragm support.

Preferably, the arc-shaped recess direction of the folded ring part is a direction toward the voice coil.

Preferably, the waterproof and breathable film comprises a waterproof layer and a metal mesh layer, and the waterproof layer is arranged on one side of the metal mesh layer far away from the magnetic circuit system.

Compared with the prior art, the sound production device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively supported on the basin frame, the magnetic circuit system is provided with a magnetic gap, and the vibration system comprises a vibrating diaphragm assembly with a vibrating diaphragm and a voice coil which is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm subassembly is including being fixed in the vibrating diaphragm support of basin frame with be fixed in the vibrating diaphragm support be used for vibrating the sound production the vibrating diaphragm, the vibrating diaphragm is including having open-ended first plane portion, locating be annular ring portion and locating of being in the outside of first plane portion roll over the ring portion outside and with vibrating diaphragm support fixed connection's connecting portion, the vibrating diaphragm subassembly is still including being fixed in the waterproof ventilated membrane of first plane portion, first plane portion is including keeping away from roll over the first interior limit of ring portion, observe along the vibration direction, first interior limit is located the inboard of voice coil loudspeaker voice coil, just the outward flange of waterproof ventilated membrane is located the outside of voice coil loudspeaker voice coil, from this, cancellation dome design, waterproof ventilated membrane directly uses as the dome, and the vibrating diaphragm is bigger with the sealed width of waterproof ventilated membrane, and waterproof performance is more excellent, and the part still less, assembles simplyr, realizes that the position of waterproof function reduces waterproof inefficacy risk.

[ 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 the sound device of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is an exploded view of the sound device of the present invention;

fig. 4 is a schematic structural view of the diaphragm assembly of the sound device of the present invention;

fig. 5 is a schematic structural view of another viewing angle of the diaphragm assembly of the sound generating device according to the present invention;

fig. 6 is a schematic structural view of the waterproof and breathable film in the sound production device of the present invention.

[ detailed description ] A

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. 1-6, the present invention provides a sounding device 100, which includes a frame 1, a vibration system 2 and a magnetic circuit system 3 with a magnetic gap 33 respectively supported on the frame 1, and a circuit board 4 for electrical connection. The vibration system 2 includes a diaphragm assembly 21 having a diaphragm 212 and a voice coil 22 inserted in the magnetic gap 33 to drive the diaphragm 212 to vibrate and generate sound; the diaphragm assembly 21 includes a diaphragm holder 211 fixed to the frame 1 and a diaphragm 212 fixed to the diaphragm holder 211 for vibrating and sounding. The diaphragm 212 includes a first flat portion 2121 having an opening 2121b, an annular folded portion 2122 disposed outside the first flat portion 2121, and a connecting portion 2123 disposed outside the folded portion 2122 and fixedly connected to the diaphragm holder 211, the diaphragm assembly 21 further includes a waterproof air-permeable membrane 214 fixed to the first flat portion 2121, the first flat portion 2121 includes a first inner edge 2121a far away from the folded portion 2122, when viewed along the vibration direction, the first inner edge 2121a is located inside the voice coil 22, and an outer edge 214a of the waterproof air-permeable membrane 214 is located outside the voice coil 22, so as to increase the width of waterproof sealing, and the waterproof performance is better.

In this embodiment, the waterproof breathable film 214 includes a waterproof layer 2141 and a metal mesh layer 2142, the waterproof layer 2141 is disposed on a side of the metal mesh layer 2142 away from the magnetic circuit system 3, and the waterproof layer 2141 is made of teflon. In other alternative embodiments, the waterproof layer 2141 may also be disposed on one side of the metal mesh layer 2142 close to the magnetic circuit system 3.

In this embodiment, the waterproof breathable film 214 is fixed on the side of the first plane portion 2121 close to the magnetic circuit system 3, so that the connection between the waterproof breathable film and the first plane portion is firmer and is not easy to fall off.

In this embodiment, the diaphragm assembly 21 further includes a sealing ring 213 disposed outside the diaphragm support 211 for enhancing the overall waterproof performance of the sounding device 100. In other optional embodiments, the sealing ring is not provided, and the waterproof function of the whole machine is designed on the part matched with the sound generating device according to the design requirement of the electronic equipment.

The diaphragm 212 further includes a second flat portion 2124 disposed on a side of the first flat portion 2121 close to the magnetic circuit system 3, the second flat portion 2124 is connected to the corrugated portion 2122 and parallel to the first flat portion 2121, and the outer edge 214a of the waterproof breathable film 214 is sandwiched between the first flat portion 2121 and the second flat portion 2124, so as to further enhance the waterproof performance of the sound generating device 100.

In this embodiment, the curved depression direction of the edge portion 2122 is a direction toward the voice coil 22, but in other embodiments, the curved depression direction of the edge portion may be the opposite direction, that is, a direction away from the voice coil.

The magnetic circuit system 3 comprises a main magnetic steel 31 and two auxiliary magnetic steels 32 arranged on two sides of the main magnetic steel 31 along the short axis direction of the sounding device, a magnetic gap 33 is formed between the auxiliary magnetic steel 32 and the main magnetic steel 31, when the magnetic circuit system is observed along the vibration direction, the first plane part 2121 is partially overlapped with the main magnetic steel 31 and the auxiliary magnetic steel 32, the magnetic gap 33 can be covered by a waterproof area, and the waterproof performance of the sounding device 100 is improved.

The magnetic circuit system 3 further comprises an upper clamping plate 34 and a lower clamping plate 35 which are fixed on the basin frame 1, the auxiliary magnetic steel 32 is clamped between the upper clamping plate 34 and the lower clamping plate 35, and the main magnetic steel 31 is fixed on the lower clamping plate 35. The magnetic circuit system 3 further comprises a pole core 36, and the main magnet steel 31 is sandwiched between the pole core 36 and the lower clamp plate 35.

Compared with the prior art, the sound production device of the utility model comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively supported on the basin frame, and the vibration system comprises a vibrating diaphragm component with a vibrating diaphragm and a voice coil which is inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and produce sound; the vibrating diaphragm subassembly is including being fixed in the vibrating diaphragm support of basin frame and being fixed in the vibrating diaphragm that is used for vibrating the sound production of vibrating diaphragm support, its characterized in that: the vibrating diaphragm is including having open-ended first plane portion, locate being annular of the outside of first plane portion roll over the ring portion and locate roll over the ring portion outside and with vibrating diaphragm support fixed connection's connecting portion, the vibrating diaphragm subassembly is still including the waterproof ventilated membrane that is fixed in first plane portion, first plane portion is including keeping away from the first interior limit of roll over the ring portion, observe along the direction of vibration, first interior limit is located the inboard of voice coil loudspeaker voice coil, and the outward flange of waterproof ventilated membrane is located the outside of voice coil loudspeaker voice coil, therefore, cancel the design of ball top, waterproof ventilated membrane directly uses as the ball top, the sealed width of vibrating diaphragm and waterproof ventilated membrane is bigger, waterproof performance is more excellent, the part still less, the equipment is simpler, realize the position reduction of waterproof function, reduce the waterproof failure risk.

The above are only embodiments of the present invention, 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 sounding device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system and the magnetic circuit system are respectively supported on the basin frame; the vibrating diaphragm subassembly is including being fixed in the vibrating diaphragm support of basin frame with be fixed in the vibrating diaphragm support be used for vibrating the sound production vibrating diaphragm, its characterized in that: the vibrating diaphragm is including having open-ended first plane portion, locating being annular of the outside of first plane portion rolls over ring portion and locates roll over the ring portion outside and with vibrating diaphragm support fixed connection's connecting portion, the vibrating diaphragm subassembly is still including being fixed in the waterproof ventilated membrane of first plane portion, first plane portion is including keeping away from roll over the first interior limit of ring portion, observe along the vibration direction, first interior limit is located the inboard of voice coil loudspeaker voice coil, just the outward flange of waterproof ventilated membrane is located the outside of voice coil loudspeaker voice coil.

2. The sounding device according to claim 1, wherein the waterproof and breathable membrane is fixed on a side of the first plane portion close to the magnetic circuit system.

3. The sounding device according to claim 2, wherein the diaphragm further includes a second planar portion disposed on a side of the first planar portion close to the magnetic circuit, the second planar portion is connected to the hinge portion and parallel to the first planar portion, and an outer edge of the waterproof breathable film is sandwiched between the first planar portion and the second planar portion.

4. The device as claimed in claim 3, wherein the magnetic circuit system comprises a main magnetic steel and two secondary magnetic steels disposed on two sides of the main magnetic steel along a short axis direction of the device, the secondary magnetic steels and the main magnetic steel form the magnetic gap therebetween, and the first plane portion overlaps with both the main magnetic steel and the secondary magnetic steel as viewed along a vibration direction.

5. The sounder device according to claim 4, wherein the magnetic circuit system further comprises an upper plate and a lower plate fixed to the frame, and the secondary magnetic steel is sandwiched between the upper plate and the lower plate.

6. The sounder device according to claim 5, wherein the magnetic circuit system further comprises a pole piece, and the main magnetic steel clamp is disposed between the pole piece and the lower clamp plate.

7. The sound production device of claim 1, wherein the diaphragm assembly further comprises a sealing ring disposed outside the diaphragm support.

8. The sounding device according to claim 1, wherein the arc-shaped recess of the folded ring portion is oriented to approach the voice coil.

9. The sounding device according to claim 1, wherein the waterproof and breathable membrane comprises a waterproof layer and a metal mesh layer, and the waterproof layer is disposed on a side of the metal mesh layer away from the magnetic circuit system.