CN111263281A

CN111263281A - Sound production device

Info

Publication number: CN111263281A
Application number: CN202010117788.XA
Authority: CN
Inventors: 严绪东; 邵涛; 顾小江
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-06-09
Also published as: WO2021168935A1

Abstract

The invention provides a sounding device, which comprises a basin frame, a vibration system and a voice coil assembly, wherein the vibration system and the voice coil assembly are respectively fixed on the basin frame; vibration system including being fixed in vibrating diaphragm, the drive of basin frame the vibrating diaphragm vibration sound production and have the magnetic force component in magnetic gap and with the relative setting in vibrating diaphragm interval and elastic support the supplementary vibrating diaphragm of magnetic force component, voice coil loudspeaker voice coil subassembly is fixed in the basin frame is kept away from one side of vibrating diaphragm, and at least part insert locate in the magnetic gap. Compared with the related art, the sound production device has the advantages of simple structure, good reliability and excellent acoustic performance.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The invention relates to the field of electroacoustic conversion, in particular to a sounding device applied to an electronic sound box 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 includes the basin frame, is fixed in respectively the vibration system of basin frame and the magnetic circuit that has the magnetic gap, the magnetic circuit drive vibration system vibration sound production, vibration system is including being fixed in the vibrating diaphragm of basin frame and being fixed in vibrating diaphragm and inserting are located the magnetic gap is in order to drive the voice coil loudspeaker voice coil of vibrating diaphragm vibration sound production.

However, in the sound generating device of the related art, the lower end of the voice coil is easy to swing in the vibration process, which affects the acoustic performance, and meanwhile, because the voice coil itself participates in the vibration, the voice coil wire of the voice coil has the risk of vibration disconnection, which affects the reliability of the sound generating device.

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

[ summary of the invention ]

The invention aims to provide a sound production device which is simple in structure, good in reliability and excellent in acoustic performance.

In order to achieve the above object, the present invention provides a sound-producing device, which comprises a basin frame, a vibration system and a voice coil assembly, wherein the vibration system and the voice coil assembly are respectively fixed on the basin frame; vibration system including being fixed in vibrating diaphragm, the drive of basin frame the vibrating diaphragm vibration sound production and have the magnetic force component in magnetic gap and with the relative setting in vibrating diaphragm interval and elastic support the supplementary vibrating diaphragm of magnetic force component, voice coil loudspeaker voice coil subassembly is fixed in the basin frame is kept away from one side of vibrating diaphragm, and at least part insert locate in the magnetic gap.

Preferably, the magnetic force component is including being fixed in the vibrating diaphragm is close to voice coil loudspeaker voice coil subassembly one side and opening orientation the magnetism bowl of voice coil loudspeaker voice coil subassembly and be fixed in magnet steel in the magnetism bowl, the magnetism bowl with the magnet steel interval forms the magnetism clearance, supplementary vibrating diaphragm one side is fixed in the basin frame, its opposite side is fixed in the magnetism bowl is kept away from the one end of vibrating diaphragm.

Preferably, the auxiliary diaphragm is annular and arranged around the magnetic bowl.

Preferably, the magnetic bowl comprises a bottom wall fixed on the vibrating diaphragm, a side wall bent and extended in the direction away from the vibrating diaphragm from the periphery of the bottom wall, and a supporting wall bent and extended in the direction close to the basin stand from one end of the side wall away from the bottom wall, and the auxiliary vibrating diaphragm is fixed on the supporting wall.

Preferably, the vibrating diaphragm includes an annular folded ring portion, a first fixing portion bent and extended from an outer peripheral side of the folded ring portion and fixed to the frame, a second fixing portion bent and extended from an inner peripheral side of the folded ring portion, and a dome covering the second fixing portion, and the bottom wall is fixed to the dome.

Preferably, the magnetic assembly further comprises a pole core attached to one side of the magnetic steel, which is far away from the diaphragm.

Preferably, the sounding device is still including being fixed in the bottom plate of the one end of vibrating diaphragm is kept away from to the basin frame, the voice coil loudspeaker voice coil subassembly is including being fixed in the bottom plate and to the skeleton that the magnetic gap extends and around locating the skeleton is close to the voice coil loudspeaker voice coil of the one end in magnetic gap, the voice coil loudspeaker voice coil passes through the skeleton suspension in the magnetic gap.

Preferably, the voice coil assembly further comprises a voice coil lead wire electrically connected with the voice coil, the voice coil lead wire is extended to the bottom plate along the framework, and is attached to the bottom plate and extended to the outside of the basin frame.

Preferably, the skeleton is provided with a through hole penetrating through the skeleton in the radial direction of the skeleton.

Compared with the prior art, the sound production device has the advantages that the magnetic bowl, the magnetic steel and other structures are fixed on the vibrating diaphragm to form a vibrating system together with the vibrating diaphragm, and the voice coil assembly is fixed on the basin frame to drive the vibrating system to vibrate and produce sound, so that the sound production device is simple in structure and easy to assemble; the magnetic bowl is connected with the basin frame through the auxiliary vibrating diaphragm, so that the swinging of the vibrating system during vibration is effectively inhibited, the vibration acoustic performance is improved, the auxiliary vibrating diaphragm fully utilizes the space in the basin frame, the total height of a product is not influenced, and the ultrathin design of a sound production device can be realized; in addition, the voice coil assembly does not participate in vibration as a driving system, so that the wire breakage risk of the voice coil is avoided, and the working reliability of the sound production device is effectively improved.

[ description of the drawings ]

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

FIG. 1 is a schematic perspective view of a sound device according to the present invention;

FIG. 2 is an exploded perspective view of a sound device according to the present invention;

fig. 3 is a sectional view taken along line a-a in fig. 1.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a sound production device 100, which includes a frame 1, and a vibration system 2 and a voice coil assembly 3 respectively fixed to the frame 1.

The sounder 100 includes a bottom plate 11 fixed at the bottom end of the basin frame 1, the basin frame 1 includes a first side plate 12 extending perpendicularly at the periphery of the bottom plate 11 and a second side plate 13 extending obliquely outward at one end of the bottom plate 11 away from the first side plate 12.

The vibration system 2 comprises a vibration diaphragm 21 fixed at one end of the basin stand 1 far away from the bottom plate 11, a magnetic component 22 driving the vibration diaphragm 21 to vibrate and sound and having a magnetic gap 20, and an auxiliary vibration diaphragm 23 elastically supporting the magnetic component 22.

Magnetic force component 22 is including being fixed in the vibrating diaphragm 21 is close to voice coil assembly 3 one side and opening orientation voice coil assembly 3's magnetism bowl 221, be fixed in magnet steel 222 in the magnetism bowl 221 and subside are located magnet steel 222 keeps away from the utmost point core 223 of vibrating diaphragm 21 one end, magnetism bowl 221 with the magnet steel 222 interval forms magnetism clearance 20, supplementary vibrating diaphragm 23 one side is fixed in basin frame 1, its opposite side is fixed in the magnetism bowl 221 is kept away from the one end of vibrating diaphragm 21.

In the invention, the magnetic bowl 221, the magnetic steel 222 and other structures are fixed on the vibrating diaphragm 21 and form the vibrating system 2 together with the vibrating diaphragm 21, and the voice coil assembly 3 drives the vibrating system 2 to vibrate and sound, namely the voice coil assembly 3 is used as a driving system and does not participate in vibration, so that the risk of wire breakage of the voice coil is avoided, and the working reliability of the sound generating device 100 is effectively improved.

The diaphragm 21 includes an annular folded ring portion 211, a first fixing portion 212 bent and extended from an outer peripheral side of the folded ring portion 211 and fixed to the frame 1, a second fixing portion 213 bent and extended from an inner peripheral side of the folded ring portion 211, and a dome 214 covering and fixed to the second fixing portion 213.

In this embodiment, the first fixing portion 212 of the diaphragm 21 is fixed to one end of the second side plate 13 away from the bottom plate 11.

The magnetic bowl 221 is fixed on one side of the diaphragm 21 close to the voice coil assembly 3, and has an opening facing the voice coil assembly 3, and includes a bottom wall 2211 fixed on the diaphragm 21, a side wall 2212 bent and extended from the periphery of the bottom wall 2211 to a direction away from the diaphragm 21, and a support wall 2213 bent and extended from one end of the side wall 2212 away from the bottom wall 2211 to a direction close to the frame 1, where the bottom wall 2211 is fixed on the dome 214.

The auxiliary diaphragm 23 and the diaphragm 21 are oppositely arranged at an interval and are located on the outer side of the magnetic bowl 221, and the auxiliary diaphragm 23 elastically supports the magnetic bowl 221. Specifically, one side of the auxiliary diaphragm 23 is fixed to the frame 1, and the other side of the auxiliary diaphragm is fixed to one end of the magnetic bowl 221 away from the diaphragm 21.

The auxiliary diaphragm 23 is fixedly connected to the magnetic bowl 221 to suppress the swing of the whole vibration system 2 when the vibration system 2 vibrates.

Preferably, the auxiliary diaphragm 23 is annular and is disposed around the magnetic bowl 221, one side of the auxiliary diaphragm 23 is fixed to one end of the first side plate 12 away from the bottom plate 11, and the other side of the auxiliary diaphragm 23 is fixed to the support wall 223; that is, the auxiliary diaphragm 23 does not affect the total height of the entire sound-generating device 100, and the ultra-thin design of the sound-generating device can be realized.

The pole core 223 is attached to the magnetic steel 222 at a side far away from the diaphragm 21.

The voice coil assembly 3 is fixed on one side of the frame 1 far away from the diaphragm 21, that is, fixed on the bottom plate 11, and at least partially inserted into the magnetic gap 20.

Voice coil unit 3 is including being fixed in bottom plate 11 and to the skeleton 31 that magnetic gap 20 extends and around locating skeleton 31 is close to the voice coil 32 of the one end of magnetic gap 20, voice coil 32 passes through skeleton 31 suspends in magnetic gap 20.

The framework 31 is provided with a through hole 310 penetrating through the framework along the radial direction, and the through hole 310 is used for pressure relief so as to balance sound pressure inside the magnetic bowl 221 and outside the magnetic bowl 221 in the vibration process of the vibration system 2 and improve acoustic performance.

More preferably, voice coil assembly 3 still include with the voice coil lead wire 33 that the voice coil 32 electricity is connected, voice coil lead wire 33 by voice coil 32 follows the skeleton 31 extends to bottom plate 11, and laminate in bottom plate 11 extends to the basin frame 1 outside for introduce outside signal of telecommunication for voice coil 32. Because the voice coil assembly 3 does not participate in vibration, the breakage of the voice coil lead 33 is avoided, and the reliability is effectively improved.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims

1. The sound production device is characterized by comprising a basin frame, a vibration system and a voice coil assembly, wherein the vibration system and the voice coil assembly are respectively fixed on the basin frame; vibration system including being fixed in vibrating diaphragm, the drive of basin frame the vibrating diaphragm vibration sound production and have the magnetic force component in magnetic gap and with the relative setting in vibrating diaphragm interval and elastic support the supplementary vibrating diaphragm of magnetic force component, voice coil loudspeaker voice coil subassembly is fixed in the basin frame is kept away from one side of vibrating diaphragm, and at least part insert locate in the magnetic gap.

2. The sounding device according to claim 1, wherein the magnetic assembly comprises a magnetic bowl fixed to one side of the diaphragm close to the voice coil assembly and having an opening facing the voice coil assembly, and magnetic steel fixed in the magnetic bowl, the magnetic bowl and the magnetic steel being spaced to form the magnetic gap, one side of the auxiliary diaphragm being fixed to the frame, and the other side of the auxiliary diaphragm being fixed to an end of the magnetic bowl away from the diaphragm.

3. The sounding device according to claim 2, wherein the auxiliary diaphragm is annular and disposed around the magnetic bowl.

4. The sounding device according to claim 2, wherein the magnetic bowl comprises a bottom wall fixed to the diaphragm, a side wall extending from a periphery of the bottom wall in a direction away from the diaphragm, and a support wall extending from an end of the side wall away from the bottom wall in a direction close to the frame, and the auxiliary diaphragm is fixed to the support wall.

5. The sounding device according to claim 4, wherein the diaphragm includes a ring-shaped folded ring portion, a first fixing portion bent and extended from an outer peripheral side of the folded ring portion and fixed to the frame, a second fixing portion bent and extended from an inner peripheral side of the folded ring portion, and a dome covering and fixed to the second fixing portion, and the bottom wall is fixed to the dome.

6. The sounding device according to claim 2, wherein the magnetic assembly further comprises a pole piece attached to the magnetic steel on a side away from the diaphragm.

7. The sound production device of claim 1, further comprising a bottom plate fixed to an end of the frame away from the diaphragm, wherein the voice coil assembly comprises a bobbin fixed to the bottom plate and extending toward the magnetic gap, and a voice coil wound around an end of the bobbin near the magnetic gap, and the voice coil is suspended in the magnetic gap through the bobbin.

8. The sounding device of claim 7, wherein the voice coil assembly further comprises a voice coil lead electrically connected to the voice coil, the voice coil lead extending from the voice coil to the bottom plate along the bobbin and attached to the bottom plate to extend to the outside of the frame.

9. The sounder device according to claim 8, wherein the skeleton is provided with a through hole extending radially therethrough.