CN213028530U

CN213028530U - Skeleton and sound production device

Info

Publication number: CN213028530U
Application number: CN202021294263.5U
Authority: CN
Inventors: 王常亮; 陆冬; 潘翔
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-04-20
Anticipated expiration: 2030-07-02
Also published as: WO2022000783A1

Abstract

The utility model provides a framework and a sound production device using the framework, wherein the framework comprises a framework body and a connecting arm bent and extended from the framework body, the framework body comprises a base body part and a body part connected with the base body part, and the connecting arm is bent and extended from the base body part; the body part comprises a top surface and a bottom surface which are oppositely arranged, a side surface for connecting the bottom surface and the top surface, and a circular arc-shaped groove which is formed by the bottom surface sinking towards the top surface, the groove penetrates through the side surface and is arranged at an interval with the base body part, and the body part also comprises a connecting part for connecting the groove and the base body part. Compared with the prior art, the utility model discloses a skeleton fatigue resistance is high and the reliability is high.

Description

Skeleton and sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an acoustoelectric field especially relates to an apply to skeleton and sound production device of portable electronic 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. A sound generating device for playing sound is widely applied to smart mobile devices such as current mobile phones.

A sound production device of the related art, which includes a frame and a vibration system fixed to the frame; the vibration system comprises a vibrating diaphragm fixed on the basin frame, a framework connected with the vibrating diaphragm, a voice coil connected to one side of the framework far away from the vibrating diaphragm, and an elastic support component fixed on the basin frame and opposite to the vibrating diaphragm; the framework comprises a framework body connected with the vibrating diaphragm and the voice coil respectively and a connecting arm bent and extended from the framework body, and the connecting arm is connected with the elastic supporting component; in order to ensure the air pressure balance of the inner side and the outer side of the voice coil, the position of the framework body close to the connecting arm is sunken to form an air vent which is arranged opposite to the connecting arm, and the air vent is communicated with the air on the inner side and the air on the outer side of the voice coil assembly.

However, in the related art, the vent is arranged at the position of the framework body close to the connecting arm, so that the framework body is thinned at the position of the connecting arm, when the connecting arm vibrates and is under the action of elastic force, the stress concentration at the position of the connecting arm is easily caused, fatigue fracture is caused, the framework is damaged, and the fatigue resistance of the framework is weak and the reliability is low.

Therefore, there is a need to provide a new skeleton and sound generating device to solve the above-mentioned problems.

[ Utility model ] content

An object of the utility model is to provide a strong just high skeleton of reliability of fatigue resistance and applied sound production device of this skeleton.

In order to achieve the above object, the present invention provides a frame, which includes a frame body and a connecting arm bent and extended from the frame body, wherein the frame body includes a base portion and a body portion connected to the base portion, and the connecting arm is bent and extended from the base portion; the body part comprises a top surface and a bottom surface which are oppositely arranged, a side surface which is connected with the bottom surface and the top surface, and a circular arc-shaped groove which is formed by the bottom surface which is sunken towards the direction of the top surface, the groove penetrates through the side surface and is arranged at an interval with the base body part, and the body part also comprises a connecting part which is connected with the groove and the base body part.

Preferably, the connecting part of the groove and the bottom surface is provided with a fillet structure.

Preferably, the skeleton body is annular structure, the linking arm includes four and mutual interval setting.

Preferably, the skeleton body is rectangular with rounded corners, the base portions are disposed at four corner positions of the skeleton body, the body portion includes a first body portion disposed along a major axis side and a second body portion disposed along a minor axis side, and the groove is disposed in the first body portion and/or the second body portion.

Preferably, the plurality of grooves located on the same long axis side or short axis side are arranged at equal intervals.

Preferably, the spacing distance between two adjacent grooves is 3 mm.

The utility model provides a sounding device, which comprises a basin frame and a vibration system fixed on the basin frame, wherein the vibration system comprises a vibrating diaphragm and a voice coil which are fixed on the basin frame, and an elastic support component which is fixed on one side of the basin frame, far away from the vibrating diaphragm, and is spaced from the vibrating diaphragm; the vibration system comprises the framework of the utility model; the top surface of the body part is connected with the vibrating diaphragm, the bottom surface of the body part is connected with the voice coil, and one side, far away from the framework body, of the connecting arm is fixedly connected with the elastic supporting component.

Preferably, the connecting arm abuts against the voice coil and is fixed with the voice coil in a gluing mode.

Preferably, the elastic support component includes two and respectively the interval set up in the relative both sides of voice coil loudspeaker voice coil, the linking arm includes four and mutual interval sets up, each the elastic support component and adjacent two linking arm fixed connection.

Compared with the prior art, in the framework of the utility model, the framework comprises a framework body and a connecting arm bent and extended from the framework body, the framework body comprises a base body part and a body part connected with the base body part, and the connecting arm is bent and extended from the base body part; the body part comprises a top surface and a bottom surface which are arranged oppositely, the side surfaces of the bottom surface and the top surface are connected, and a groove which is formed by the bottom surface which is sunken towards the top surface is arc-shaped, the groove penetrates through the side surfaces and is arranged at an interval with the base body part, the body part also comprises a connecting part which connects the groove with the base body part, the position of the framework body for setting the connecting arm can be effectively ensured to have enough rigidity, the fatigue fracture caused by the over concentration of stress on the position is avoided, and because the groove is arc-shaped, the structure enables the framework body to better disperse the stress, the integral fatigue resistance of the framework is effectively enhanced, the service life of the framework is ensured.

[ 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 framework of the present invention;

FIG. 2 is a schematic view of the framework of the present invention showing another perspective structure;

FIG. 3 is an enlarged view of a portion A of FIG. 2;

fig. 4 is an assembly diagram of the bobbin and the voice coil 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. 1-4, the present invention provides a frame 100, which includes a frame body 1 and a connecting arm 2 bent and extended from the frame body 1.

The skeleton body 1 includes a base portion 11 and a body portion 12 connected to the base portion 11, and the connecting arm 2 is formed by bending and extending the base portion 11.

The main body 12 includes a bottom surface 101 and a top surface 102 which are oppositely arranged, and a side surface 103 which connects the bottom surface 101 and the top surface 102 and is formed by the bottom surface 101 sinking towards the top surface 102 and is a circular arc-shaped groove 120, the groove 120 penetrates the side surface 103 and is arranged at a distance from the base part 11; the body portion 12 further includes a connecting portion 123 connecting the recess 120 and the base portion 12.

It should be noted that the structural form of the skeleton body 1 is not limited, and it may be specifically configured according to actual situations, for example, in the present embodiment, taking the skeleton body 1 as an example of an annular structure, the base portions 11 include four and are arranged at intervals, the connecting arms 2 include four and are arranged at intervals, and the four connecting arms 2 are respectively formed by bending and extending the four base portions 11.

Furthermore, the skeleton body 1 is rectangular with rounded corners, the base portions 11 are disposed at four corner positions of the skeleton body 1, the body portion 12 includes a first body portion 121 disposed along a major axis side of the skeleton body 1 and a second body portion 122 disposed along a minor axis side of the skeleton body 1, and the first body portion 121 and the second body portion 122 are connected to the base portions 11 through the connecting portions 123, respectively; the groove 120 is disposed on the first body portion 121 and/or the second body portion 122; in this embodiment, the grooves 120 are preferably formed in a recessed manner on both the first body portions 121 and the second body portions 122, so that the overall distribution of the plurality of grooves 120 on the skeleton body 1 is more uniform, and the fatigue resistance and reliability of the skeleton 100 as a whole are better improved.

Preferably, the plurality of grooves 120 located on the same first body 121 or the same second body 122 are arranged at equal intervals, so that the plurality of grooves 120 are uniformly distributed on the single first body 121 or the single second body 122, and the stress applied to the first body 121 or the second body 122 is better dispersed through the arrangement, thereby further improving the overall fatigue resistance and reliability.

In order to ensure that the joint between two adjacent grooves 120 has sufficient strength and avoid the joint from vibrating, the specific arrangement of the spacing distance between two adjacent grooves 120 may be considered comprehensively according to the magnitude of the stress and the size of a single groove 120, for example, in the present embodiment, the spacing distance between two adjacent grooves 120 is 3 mm.

In the structure, the groove 120 is arc-shaped, so that the framework body 1 can better disperse stress, and in addition, the groove 120 and the position of the framework body 1, where the connecting arm 2 is arranged, are arranged at a certain distance, so that the position, where the connecting arm 2 is arranged, of the framework body 1 can be effectively ensured to have sufficient rigidity, the phenomenon of fatigue fracture caused by over concentration of stress on the position is avoided, the integral fatigue resistance of the framework 100 is effectively enhanced, the service life of the framework 100 is ensured, and the reliability is improved.

Preferably, the fillet structure 104 is disposed at the connection between the groove 120 and the bottom surface 101, and by the arrangement of the fillet structure 104, the stress at the connection between the groove 120 and the bottom surface 101 is effectively dispersed, so that the damage to the bobbin 100 due to the over-concentrated stress at the position is avoided, the fatigue resistance of the bobbin 100 is further enhanced, and the reliability of the voice coil assembly 100 is improved.

Skeleton 100 can be applied to on the sound production device, the sound production device includes the basin frame, is fixed in the vibration system of basin frame and the magnetic circuit that has the magnetic gap.

The vibration system comprises a vibrating diaphragm fixed on the basin frame, a voice coil 3 inserted in the magnetic gap and used for driving the vibrating diaphragm, and an elastic support assembly fixed on one side of the basin frame far away from the vibrating diaphragm and spaced relative to the vibrating diaphragm.

The top surface 101 of the main body 12 is connected to the diaphragm, the bottom surface 102 of the main body 12 is connected to the voice coil 3, and the side of the connecting arm 2 away from the bobbin body 1 is fixedly connected to the elastic support assembly.

It should be mentioned that, the fixed connection between the bobbin body 1 and the voice coil 3 is not limited, for example, in the present embodiment, the bottom surface 101 of the bobbin body 1 is glued to fix the bobbin body 1 and the voice coil 3 by gluing, so as to effectively ensure the fixing reliability between the two.

Further, will linking arm 2 butt in voice coil 3 and with voice coil 3 forms the veneer fixed, increased skeleton 100 with the area of the veneer between the voice coil 3, further improve the reliability of fixing between the two.

Preferably, the elastic support component comprises two and is respectively arranged at intervals on two opposite sides of the voice coil 3, the connecting arms 2 comprise four and are arranged at intervals, and each elastic support component is fixedly connected with the adjacent two connecting arms 2.

In the structure, the plurality of grooves 120 are uniformly distributed on the framework 100, and the grooves 120 communicate the air on the inner side and the outer side of the voice coil 3, so that the uniform flow of the air flow inside and outside the voice coil 3 is facilitated, the air pressure balance on the inner side and the outer side of the voice coil 3 is ensured, and the high-frequency acoustic performance of the sound production device is optimized.

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. The framework is characterized by comprising a framework body and a connecting arm bent and extended from the framework body, wherein the framework body comprises a base body part and a body part connected with the base body part, and the connecting arm is bent and extended from the base body part; the body part comprises a top surface and a bottom surface which are oppositely arranged, a side surface which is connected with the bottom surface and the top surface, and a circular arc-shaped groove which is formed by the bottom surface which is sunken towards the direction of the top surface, the groove penetrates through the side surface and is arranged at an interval with the base body part, and the body part also comprises a connecting part which is connected with the groove and the base body part.

2. The framework of claim 1, wherein the connection between the groove and the bottom surface is configured as a rounded structure.

3. The frame of claim 1, wherein the frame body is an annular structure, and the connecting arms include four arms spaced apart from each other.

4. A frame as claimed in claim 3 wherein the frame body is rectangular with rounded corners, the base portions are provided at four corner positions of the frame body, the body portions include a first body portion provided along a major axis edge and a second body portion provided along a minor axis edge, and the recess is provided in the first and/or second body portions.

5. The frame of claim 4, wherein the plurality of grooves on the same major or minor axis are equally spaced.

6. The framework of claim 5, wherein adjacent grooves are spaced apart by a distance of 3 millimeters.

7. A sound-producing device comprising a frame and a vibration system fixed to the frame, the vibration system comprising a diaphragm fixed to the frame, a voice coil, and an elastic support member fixed to the frame on a side thereof remote from the diaphragm and spaced opposite to the diaphragm, wherein the vibration system comprises the frame of any one of claims 1 to 6; the top surface of the body part is connected with the vibrating diaphragm, the bottom surface of the body part is connected with the voice coil, and one side, far away from the framework body, of the connecting arm is fixedly connected with the elastic supporting component.

8. The sounding device according to claim 7, wherein the connecting arm abuts against the voice coil and is fixed to the voice coil by gluing.

9. The sounding device according to claim 7, wherein the resilient support member includes two and spaced apart from each other at opposite sides of the voice coil, and the connecting arms include four and spaced apart from each other, and each resilient support member is fixedly connected to two adjacent connecting arms.