CN214177550U

CN214177550U - Sound production device

Info

Publication number: CN214177550U
Application number: CN202022827928.0U
Authority: CN
Inventors: 金鑫; 钟志威
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-09-10
Anticipated expiration: 2030-11-30
Also published as: WO2022110430A1

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 and a voice coil, the magnetic circuit system comprises a magnetic bowl and magnetic steel, the magnetic bowl comprises a magnetic bowl body and a magnetic bowl side wall which is bent and extended from the periphery of the magnetic bowl body to the vibrating diaphragm direction, the magnetic steel is fixed on the magnetic bowl body and is separated from the magnetic bowl side wall, and the magnetic bowl side wall is fixed on the basin frame; the basin frame comprises a ring-shaped basin frame body, a basin frame fixing part extending from the basin frame body to the side wall of the magnetic bowl, and a basin frame positioning part formed by the protrusion of the basin frame fixing part to the direction far away from the basin frame body; one side of the side wall of the magnetic bowl, which is far away from the magnetic bowl body, is sunken towards the direction of the magnetic bowl body to form a magnetic bowl gap, and the magnetic bowl gap is matched with the positioning part of the basin stand; the positioning part of the basin stand is inserted into the gap of the magnetic bowl, and meanwhile, the fixing part of the basin stand is fixedly connected with the side wall of the magnetic bowl. Compared with the prior art, the utility model discloses a sounding device's simple structure and intensity are big, easily equipment location and reliability are high.

Description

Sound production 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 ]

With the advent of the mobile internet age, the number of smart mobile devices is increasing. Among the mobile devices, the mobile phone is undoubtedly the most common and portable mobile terminal device. At present, the functions of mobile phones are very diverse, one of them is a high-quality music function, and therefore, a sound generating device for playing sound is widely applied to the current smart mobile devices.

In the related art, the sound production device comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system drives the vibration system to vibrate and produce sound, the magnetic circuit system comprises a magnetic bowl fixed on the basin frame and magnetic steel contained in the magnetic bowl, and the magnetic bowl is glued and fixed with the basin frame.

However, the frame of the sound device of the related art is generally made of plastic, and the strength of the plastic is not so strong as to easily cause the sound device to deform. In addition, because the magnetic bowl is glued and fixed with the basin frame, the magnetic bowl and the basin frame are easy to move when the glue is fixed, the magnetic circuit system is difficult to position, and the reliability of the sounding device is low.

Therefore, there is a need to provide a new sound generation device to solve the above technical problems.

[ Utility model ] content

An object of the utility model is to provide a simple structure and intensity are big, easily assemble the location and the high sound production device of reliability.

In order to achieve the above object, the utility model provides a sounder, it includes the basin frame, is fixed in the vibration system and the drive of basin frame the magnetic circuit of vibration system vibration sound production, the vibration system is including being fixed in the vibrating diaphragm and the drive of basin frame the voice coil loudspeaker voice coil of vibrating diaphragm vibration, magnetic circuit is including being fixed in the magnetism bowl of basin frame with accept in magnet steel in the magnetism bowl, the magnetism bowl include the magnetism bowl body and by the periphery of magnetism bowl body to the magnetism bowl lateral wall that the vibrating diaphragm direction is buckled and is extended, the magnet steel is fixed in the magnetism bowl body and with magnetism bowl lateral wall interval sets up and forms the magnetism clearance, the magnetism bowl lateral wall is fixed in the basin frame, the voice coil loudspeaker voice coil is inserted and is located the magnetism clearance, the basin frame including being annular basin frame body, by the basin frame body to the basin frame fixed part that the direction of magnetism bowl lateral wall extended and by the basin frame fixed part is to keeping away from the direction protrusion of basin frame body forms basin frame location A section; one side of the side wall of the magnetic bowl, which is far away from the magnetic bowl body, is sunken in the direction of the magnetic bowl body to form a magnetic bowl gap, and the magnetic bowl gap is matched with the positioning part of the basin stand; the basin frame positioning part is inserted into the magnetic bowl gap, and meanwhile the basin frame fixing part is fixedly connected with the side wall of the magnetic bowl.

Preferably, the basin frame is made of metal materials, and the basin frame fixing part is fixed on the side wall of the magnetic bowl through laser welding.

Preferably, the basin frame is of a rectangular structure, the basin frame fixing parts comprise two basin frame fixing parts, and the two basin frame fixing parts are respectively located on two opposite sides of a long shaft of the basin frame.

Preferably, the basin frame positioning parts comprise four, and every two of the four basin frame positioning parts are distributed on two opposite sides of the long axis of the basin frame at intervals and symmetrically.

Preferably, the vibrating diaphragm includes vibration portion, by the outer peripheral edges of vibration portion buckle the ring portion that extends and by the ring portion that rolls over to the basin frame connecting portion that extend of buckling, connecting portion are fixed in the basin frame body, roll over the ring portion and be to being close to the sunken arc structure that forms of magnetism bowl direction and with the basin frame fixed part is just to setting up, roll over the ring portion with the distance of basin frame fixed part is greater than roll over the maximum vibration range of ring portion.

Preferably, the diaphragm further includes an annular reinforcing portion extending from the outer periphery of the connecting portion along the extending direction of the frame body, and the reinforcing portion is fixed to the frame body.

Preferably, an end of the voice coil remote from the magnetic circuit system is fixed to the vibrating portion.

Preferably, the vibration system further comprises two elastic support assemblies and a framework fixed on one side of the vibration part close to the magnetic circuit system, the two elastic support assemblies are respectively positioned on two opposite sides of the short shaft of the basin frame, one end of each elastic support assembly is fixed on the basin frame body, and the other end of each elastic support assembly is fixed on the framework; the voice coil is connected to the diaphragm through the framework.

Preferably, the skeleton including be fixed in vibrating portion be annular skeleton body, by the outer peripheral edges of skeleton body to the first skeleton fixed part that the elastic support subassembly direction extends and by the internal peripheral edges of skeleton body to the second skeleton fixed part that the voice coil loudspeaker voice coil direction extends, the elastic support subassembly connect in first skeleton fixed part is kept away from the one end of skeleton body, the voice coil loudspeaker voice coil is connected to second skeleton fixed part, the elastic support subassembly with the voice coil loudspeaker voice coil electricity is connected.

Preferably, the second framework fixing parts comprise at least two, and the adjacent second framework fixing parts are arranged at intervals to form leakage channels

Compared with the prior art, the sound production device of the utility model extends the frame body of the frame out of the frame fixing part, extends the frame fixing part out of the frame positioning part, and arranges the magnetic bowl side wall of the magnetic bowl with the magnetic bowl gap; the basin frame location portion inserts in the magnetism bowl breach, and basin frame fixed part with the magnetism bowl lateral wall forms fixed connection, and this structure utilizes the position of magnetism bowl breach is as the high locating surface of magnetism bowl makes magnetic circuit with basin frame equipment location is accurate, has still guaranteed to reserve sufficient vibration system's vibration space simultaneously. Simultaneously the outside of magnetism bowl lateral wall with the inboard of basin frame fixed part is fixed, and this simple structure is difficult for taking place the basin frame with the magnetism bowl removes, has effectively guaranteed the basin frame with the fixed stability of magnetism bowl has thereby improved the reliability of sound production device.

[ 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 is an exploded view of a part of the three-dimensional structure of the sound device of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

FIG. 4 is an enlarged view of the portion indicated by B in FIG. 3;

fig. 5 is a schematic view of the three-dimensional structure assembly of the magnetic bowl and the basin frame of the sound production device of the present invention.

[ detailed description ] embodiments

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. 1-5, the present invention provides a sound-generating device 100, wherein the sound-generating device 100 includes a basin frame 1, a vibration system 2 fixed on the basin frame 1, and a magnetic circuit system 3 for driving the vibration system 2 to vibrate and generate sound.

In this embodiment, the frame 1 is made of metal. The metal tub 1 has high hardness and is not easily deformed during use and assembly, thereby improving the reliability of the sound generating device 100.

Specifically, the frame 1 includes a frame body 11, a frame fixing portion 12, and a frame positioning portion 13.

The basin stand body 11 is of an annular structure. The frame body 11 is used for fixing the vibration system 2.

The frame fixing part 12 is formed by extending the frame body 11. The frame fixing part 12 is used for being fixed with the magnetic circuit system 3 through laser welding.

The frame positioning part 13 is formed by the frame fixing part 12 protruding in a direction away from the frame body 11. The basin frame positioning part 13 is used for assembling and positioning the magnetic circuit system 3, and simultaneously ensures that a sufficient vibration space of the vibration system 2 is reserved.

The vibration system 2 includes a diaphragm 21, a voice coil 22, an elastic support member 23, and a bobbin 24.

The vibrating diaphragm 21 is fixed on one side of the basin stand body 11 far away from the magnetic bowl 31.

The vibrating diaphragm 21 includes a vibrating portion 211, a bent portion 212 bent and extended from an outer peripheral edge of the vibrating portion 211, and a connecting portion 213 bent and extended from the bent portion 212 toward the frame 1.

The connecting portion 213 is fixed to the frame body 11.

The folded ring part 212 is an arc structure formed by sinking towards the direction close to the magnetic bowl 31 and is arranged opposite to the basin stand fixing part 12. The distance between the folded ring part 212 and the frame fixing part 12 is larger than the maximum vibration amplitude of the folded ring part 212.

In this embodiment, in order to enhance the fixing strength between the diaphragm 21 and the frame body 11, the diaphragm 21 further includes an annular reinforcing portion 214 bent and extended from the outer peripheral edge of the connecting portion 213 along the extending direction of the frame body 11. The reinforcing part 214 is fixed to the frame body 11. When the vibrating diaphragm 21 vibrates to produce sound, the structure avoids the vibrating diaphragm 21 and the basin frame body 11 from falling off to cause the poor acoustic effect of the sound production device 100, so that the sound production device 100 is high in reliability.

The voice coil 22 is used for driving the diaphragm 21 to vibrate and generate sound. In this embodiment, the voice coil 22 is connected to the diaphragm 21 through the bobbin 24.

The elastic supporting component 23 is fixed on the basin stand 1. The elastic support member 23 is electrically connected to the voice coil 22. Specifically, one end of the elastic support component 23 is fixed to the frame body 11, and the other end thereof is fixed to the framework 24. The elastic supporting component 23 is used for balancing the vibration of the voice coil 22, and the elastic supporting component 23 supports the voice coil 22 more stably and has better vibration reliability.

The bobbin 24 is fixed to the vibrating portion 211 on the side closer to the magnetic circuit system 3. The bobbin 24 includes a bobbin body 241 fixed to the vibrating portion 211 and a first bobbin fixing portion 242 extending in the direction of the elastic support component 23 and a second bobbin fixing portion 243 extending in the direction of the voice coil 22 and extending in the direction of the inner circumference of the bobbin body 241. The elastic supporting member 23 is connected to one end of the first bobbin fixing portion 242 away from the bobbin body 241, and the voice coil 22 is connected to the second bobbin fixing portion 243. This structure makes the voice coil 22 drive the diaphragm 21 to vibrate and generate sound through the framework 24, and simultaneously connects the elastic support component 23 so that the balance and feasibility of vibration are high.

In this embodiment, the second frame fixing portion 243 includes at least two portions. A leakage passage 2430 is formed between the adjacent second frame fixing portions 243. The structure of the leakage channel 2430 is beneficial to balance the air pressure inside and outside the voice coil 22, so that the voice coil 22 drives the diaphragm 21 to vibrate and sound with good effect, and the sound production device 100 has good acoustic effect.

Of course, it is also possible that the voice coil 22 directly drives the diaphragm 21. In another embodiment, the second frame fixing portion 243 may not be provided. Specifically, the voice coil 22 is fixed to the vibration portion 211. An end of the voice coil 22 away from the magnetic circuit system 3 is fixed to the vibrating portion 211. The structure does not have the second frame fixing part 243, and the structure is simple and easy to manufacture and assemble.

The magnetic circuit system 3 comprises a magnetic bowl 31 fixed on the frame 1 and magnetic steel 32 contained in the magnetic bowl 31.

The magnetic bowl 31 includes a magnetic bowl body 311 and a magnetic bowl sidewall 312 extending from the periphery of the magnetic bowl body 311 to the diaphragm 21.

The magnetic bowl body 311 is used for fixing the magnetic steel 32. The magnetic bowl body 311 and the diaphragm 21 are respectively located on two opposite sides of the sound production device 100. The first frame fixing part 242 extends from the frame body 241 to the magnetic bowl body 311.

The magnetic bowl side wall 312 is fixed on the basin stand 1. One side of the magnetic bowl side wall 312, which is far away from the magnetic bowl body 311, is recessed towards the magnetic bowl body 311 to form a magnetic bowl notch 310. The magnetic bowl gap 310 is matched with the frame positioning part 13. The frame fixing part 12 is formed by extending the frame body 11 to the magnetic bowl side wall 312.

When the sound production device 100 is assembled, the frame positioning portion 13 is inserted into the magnetic bowl gap 310, and meanwhile, the frame fixing portion 12 and the magnetic bowl side wall 312 form a fixed connection, and the structure is used for assembling and positioning the magnetic circuit system 3 and the frame 1. The structure utilizes the position of the magnetic bowl gap 310 as a height positioning surface of the magnetic bowl 31, so that the magnetic circuit system 3 and the basin frame 1 are accurately assembled and positioned, and simultaneously, sufficient vibration space of the vibration system 2 is ensured to be reserved, namely, the structure ensures that the distance between the ring bending part 212 and the basin frame fixing part 12 is greater than the maximum vibration amplitude of the ring bending part 212.

In this embodiment, the frame fixing part 12 is fixed to the magnetic bowl side wall 312 by laser welding. Through laser welding fixation, on one hand, the basin stand fixing part 12 and the magnetic bowl side wall 312 can be welded firmly, and reliability is improved; on the other hand makes laser welding can be through in the outside of basin frame 1 with the outside of magnetism bowl 31 is operated, and laser slant welding easy operation is favorable to the production equipment of sound production device 100 to be favorable to the volume production.

And a fusion point 4 is arranged on one side of the magnetic bowl side wall 312 close to the frame fixing part 12 and/or one side of the frame fixing part 12 close to the magnetic bowl side wall 312. Will through laser slant welding the metal material of basin frame fixed part 12 with the material fusion of magnetism bowl lateral wall 312 forms fusion point 4 to make laser welding can pass through the outside of basin frame 1 with the outside of magnetism bowl 31 is operated, and laser slant welding easy operation is favorable to the production equipment of sound production device 100 to be favorable to the volume production. The magnetic bowl side wall 312 and the frame fixing part 12 are welded and fixed through the fusion point 4. The fusion point 4 is located at the position where the magnetic bowl side wall 312 is close to the connection of the magnetic bowl side wall 312 and the frame fixing part 12.

In this embodiment, the fusion points 4 include a plurality of fusion points 4, and the fusion points 4 are spaced from each other and symmetrically distributed on the magnetic bowl side wall 312 and the frame fixing portion 12. The plurality of fusion points 4 are formed by spot welding which is symmetrically distributed, the assembly process is simple due to the structure, the fixing part 12 of the basin frame and the side wall 312 of the magnetic bowl are welded firmly, and the reliability of the sounder 100 is improved.

The magnetic steel 32 is fixed on the magnetic bowl body 311 and is arranged at an interval with the magnetic bowl side wall 312 to form a magnetic gap 30. The voice coil 22 is inserted and suspended in the magnetic gap 30. The bobbin fixing portion 242 extends from the bobbin body 241 to the magnetic gap 30.

In this embodiment, the magnetic bowl 31 has a rectangular structure. The frame fixing parts 12 comprise two frame fixing parts 12, and the two frame fixing parts 12 are respectively positioned on two opposite sides of a long shaft of the frame 1. The symmetrically arranged frame fixing parts 12 enable the frame fixing parts 12 and the magnetic bowl side wall 312 to be welded and combined firmly, and reliability of the sound production device 100 is improved.

Preferably, the number of the positioning portions 13 is four, and every two positioning portions 13 are symmetrically distributed on two opposite sides of the long axis of the basin stand 1 at intervals. The basin frame positioning parts 13 which are symmetrically arranged enable the basin frame 1 and the magnetic bowl 31 to be combined more firmly, the reliability of the sounding device 100 is improved, meanwhile, the magnetic circuit system 3 and the basin frame 1 are assembled and positioned more accurately, and the reliability of the folded ring part 312 under the condition of maximum vibration is guaranteed.

The elastic support assemblies 23 comprise two elastic support assemblies 23, the two elastic support assemblies 23 are respectively located on two opposite sides of the short shaft of the basin stand 1, the two elastic support assemblies 23 which are symmetrically distributed support the voice coil 22 more stably, and the vibration reliability is better.

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 sound production device comprises a basin frame, a vibration system fixed on the basin frame and a magnetic circuit system for driving the vibration system to vibrate and produce sound, wherein the vibration system comprises a vibrating diaphragm fixed on the basin frame and a voice coil for driving the vibrating diaphragm to vibrate, the magnetic circuit system comprises a magnetic bowl fixed on the basin frame and magnetic steel contained in the magnetic bowl, the magnetic bowl comprises a magnetic bowl body and a magnetic bowl side wall bent and extended from the periphery of the magnetic bowl body to the vibrating diaphragm direction, the magnetic steel is fixed on the magnetic bowl body and forms a magnetic gap with the magnetic bowl side wall at an interval, the magnetic bowl side wall is fixed on the basin frame, the voice coil is inserted in the magnetic gap, and the sound production device is characterized in that,

the basin frame comprises a ring-shaped basin frame body, a basin frame fixing part extending from the basin frame body to the side wall of the magnetic bowl, and a basin frame positioning part formed by protruding from the basin frame fixing part to the direction far away from the basin frame body;

one side of the side wall of the magnetic bowl, which is far away from the magnetic bowl body, is sunken in the direction of the magnetic bowl body to form a magnetic bowl gap, and the magnetic bowl gap is matched with the positioning part of the basin stand;

the basin frame positioning part is inserted into the magnetic bowl gap, and meanwhile the basin frame fixing part is fixedly connected with the side wall of the magnetic bowl.

2. The sounding device according to claim 1, wherein the frame is made of metal material, and the frame fixing part is fixed on the magnetic bowl side wall by laser welding.

3. The sound production device as claimed in claim 1, wherein the frame is rectangular and the number of the frame fixing portions is two, and the two frame fixing portions are respectively located on two opposite sides of the long axis of the frame.

4. The sounding device according to claim 3, wherein the positioning portion of the frame comprises four positioning portions, and two positioning portions of the four positioning portions are symmetrically distributed on two opposite sides of the long axis of the frame at intervals.

5. The sounding device according to claim 4, wherein the diaphragm includes a vibrating portion, a folded ring portion extending from the outer periphery of the vibrating portion in a bent manner, and a connecting portion extending from the folded ring portion to the frame in a bent manner, the connecting portion is fixed to the frame body, the folded ring portion is in an arc-shaped structure formed by being recessed towards the magnetic bowl direction and is opposite to the frame fixing portion, and the distance between the folded ring portion and the frame fixing portion is greater than the maximum vibration amplitude of the folded ring portion.

6. The sounding device according to claim 5, wherein the diaphragm further comprises an annular reinforcing portion extending from an outer periphery of the connecting portion along an extending direction of the frame body, and the reinforcing portion is fixed to the frame body.

7. The sounding device according to claim 5, wherein an end of the voice coil remote from the magnetic circuit system is fixed to the vibrating portion.

8. The sounding device according to claim 5, wherein the vibration system further comprises two elastic support assemblies and a skeleton fixed to one side of the vibration portion close to the magnetic circuit system, the two elastic support assemblies are respectively located on two opposite sides of the short axis of the frame, one end of each elastic support assembly is fixed to the frame body, and the other end of each elastic support assembly is fixed to the skeleton; the voice coil is connected to the diaphragm through the framework.

9. The sounding device according to claim 8, wherein the bobbin comprises a ring-shaped bobbin body fixed to the vibrating portion, a first bobbin fixing portion extending from an outer periphery of the bobbin body to the elastic supporting member, and a second bobbin fixing portion extending from an inner periphery of the bobbin body to the voice coil, the elastic supporting member is connected to the end of the first bobbin fixing portion away from the bobbin body, and the voice coil is connected to the second bobbin fixing portion.

10. The sounder device according to claim 9, wherein the second frame securing portions comprise at least two, and wherein adjacent second frame securing portions are spaced apart to form a leak path.