CN210327969U

CN210327969U - Sound producing device

Info

Publication number: CN210327969U
Application number: CN201920694493.1U
Authority: CN
Inventors: 严绪东; 周科勇; 刘威
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-04-14
Anticipated expiration: 2029-05-15

Abstract

The utility model relates to a sound production device, including the first casing that has first accommodating space, accept in first magnet in the first casing, with first casing relative separation sets up and has second accommodating space's second casing, connection first casing with second casing and elastic support the shell fragment of first casing and accept in second magnet and coil in the second casing, the second casing include the diapire and certainly the central authorities of diapire to first casing direction extends and is located magnetic conduction post in the second accommodating space, the coil twine in on the magnetic conduction post, the second magnet is fixed on the coil and be located the coil with between the first magnet. The utility model has the advantages of realizing the integration of the sound generating device and other devices and structures, along with simple structure and low manufacturing cost.

Description

Sound producing device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion technology field especially relates to a sound generating mechanism.

[ 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, sound generating devices for playing sound are widely applied to current smart mobile devices.

In the related art, a sound generating device is generally used to generate sound, but it is rare to integrate the sound generating device with other devices and structures.

[ Utility model ] content

An object of the utility model is to provide a sound generating mechanism, it can realize the integration of sound generating mechanism and other equipment and structures.

In order to solve the above technical problem, the present invention provides a sound generating device, which comprises a first housing having a first receiving space, a first magnet received in the first housing, a second housing spaced from the first housing and having a second receiving space, a spring plate connecting the first housing and the second housing, and a second magnet and a coil received in the second housing, the first shell is provided with a first opening end facing the second shell, the second shell is provided with a second opening end opposite to the first opening end, the second shell comprises a bottom wall opposite to the second opening end and a magnetic conduction column extending from the center of the bottom wall to the first shell and positioned in the second accommodating space, the coil is wound on the magnetic conduction column, and the second magnet is fixed on the coil and positioned between the coil and the first magnet.

As an improvement of the present invention, the magnetic conductive column is made of a soft magnetic material.

As an improvement of the present invention, the elastic piece is an annular elastic piece.

As an improvement of the utility model, the sound generating device further comprises a gasket fixedly connected with the elastic piece, the elastic piece passes through the gasket with first casing with the second casing is connected.

As an improvement of the utility model, first casing include with shell fragment fixed connection's first lateral wall, the second casing include certainly the periphery of diapire to the second lateral wall that first casing direction extends, the shell fragment is the rectangle, the shell fragment includes a pair of first side and the connection of relative setting a pair of second side, each of first side and relative setting a pair of second side, each first side and each the second side all is equipped with one the gasket, first side passes through the gasket is fixed to first lateral wall, the second side passes through the gasket is fixed to the second lateral wall.

As an improvement of the present invention, the first magnet and the second magnet are permanent magnets.

As an improvement of the present invention, the coil is spaced apart from the second sidewall.

The utility model has the advantages of realizing the integration of the sound generating device and other devices and structures, along with simple structure and low manufacturing cost.

[ description of the drawings ]

Fig. 1 is a perspective view of the sound generating device of the present invention;

fig. 2 is an exploded perspective view of the sound generating device of the present invention;

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

[ detailed description ] embodiments

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 and 2, the present invention provides a sound generating device 100, which comprises a first housing 1 having a first receiving space 11, a first magnet 2 received in the first housing 1, a second housing 3 spaced from the first housing 1 and having a second receiving space 31, a spring plate 4 connecting the first housing 1 and the second housing 3 and elastically supporting the first housing 1, and a second magnet 5 and a coil 6 received in the second housing 3, in a particular embodiment of the present invention, said first magnet 2 and said second magnet 5 are both permanent magnets, the magnetic field between the first magnet 2 and the second magnet 5 can generate a pretightening force on the elastic sheet 4, of course, the first magnet 2 and the second magnet 5 may be opposite in homopolar or opposite in heteropolar, which may be set according to actual needs.

Referring to fig. 3 again, the first casing 1 has a first open end 12 facing the second casing 3, the second casing 3 has a second open end 32 facing the first casing 1, and the first open end 12 is opposite to the second open end 32.

The second casing 3 includes a bottom wall 33 opposite to the second opening end 32, a second side wall 34 extending from the periphery of the bottom wall 33 to the first casing 1, and a magnetic conductive column 35 extending from the center of the bottom wall 33 to the first casing 1 and located in the second accommodating space 31, the coil 6 is wound on the magnetic conductive column 35, the coil 6 and the second side wall 34 are arranged at intervals, and the second magnet 5 is fixed on the coil 6 and located between the coil 6 and the first magnet 2. In the embodiment of the present invention, the magnetic conductive column 35 is made of soft magnetic material, so that when the coil 6 is powered on, the magnetic conductive column 35 is magnetized to increase the magnetic field intensity generated by the coil 6.

The sound generating device 100 further comprises a gasket 7 fixedly connected with the elastic sheet 4, and the elastic sheet 4 is connected with the first shell 1 and the second shell 3 through the gasket 7.

The shell fragment 4 is annular shell fragment, first casing 1 include with shell fragment 4 fixed connection's first lateral wall 13, shell fragment 4 is the rectangle, shell fragment 4 includes a pair of first side 41 and the connection of relative setting a pair of second side 42, each of first side 41 and each the second side 42 all is equipped with one the gasket 7, first side 41 passes through gasket 7 is fixed extremely first lateral wall 13, second side 42 passes through gasket 7 is fixed extremely second lateral wall 34.

The spring 4 provides a supporting reaction force acting as a reaction force to the force induced by the magnetic field such that the first housing 1 is in a force equilibrium state, and wherein the electrical signal in the coil 6 is proportional to the mechanical displacement of the first housing 1 when the force equilibrium state is broken by the electrical signal in the coil 6 or by the mechanical displacement of the first housing 1 from the position of the force equilibrium state.

When the sound generating device 100 is configured to generate sound, the coil 6 receives an electrical signal, thereby generating an alternating magnetic field, inducing a change in the magnetic field between the first magnet 2 and the second magnet 5, thereby breaking the force balance device, so that the first housing 1 may vibrate according to an electrical audio signal.

The foregoing is only a preferred embodiment 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 is characterized by comprising a first shell with a first accommodating space, a first magnet accommodated in the first shell, a second shell which is arranged opposite to the first shell at intervals and is provided with a second accommodating space, a spring sheet which connects the first shell and the second shell, and a second magnet and a coil accommodated in the second shell, the first shell is provided with a first opening end facing the second shell, the second shell is provided with a second opening end opposite to the first opening end, the second shell comprises a bottom wall opposite to the second opening end and a magnetic conduction column extending from the center of the bottom wall to the first shell and positioned in the second accommodating space, the coil is wound on the magnetic conduction column, and the second magnet is fixed on the coil and positioned between the coil and the first magnet.

2. The sound generating apparatus of claim 1, wherein said magnetically permeable post is made of a soft magnetic material.

3. The sound-generating apparatus of claim 1 or 2, wherein the resilient sheet is an annular resilient sheet.

4. The sound generating device of claim 3, further comprising a gasket fixedly connected to the resilient piece, wherein the resilient piece is connected to the first housing and the second housing through the gasket.

5. The apparatus according to claim 4, wherein the first housing includes a first sidewall fixedly connected to the resilient plate, the second housing includes a second sidewall extending from the periphery of the bottom wall toward the first housing, the resilient plate is rectangular, the resilient plate includes a pair of first opposing sides and a pair of second opposing sides connected to the first sides, each of the first and second sides has a gasket, the first sides are fixed to the first sidewall through the gaskets, and the second sides are fixed to the second sidewall through the gaskets.

6. The apparatus according to claim 2, wherein said first and second magnets are both permanent magnets.

7. The apparatus according to claim 5 wherein said coil is spaced from said second sidewall.