CN213661911U

CN213661911U - Loudspeaker

Info

Publication number: CN213661911U
Application number: CN202022829758.XU
Authority: CN
Inventors: 宋威; 张帆; 金鑫
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-09
Anticipated expiration: 2030-11-30
Also published as: WO2022110462A1

Abstract

The utility model provides a loudspeaker, it includes the basin frame, is fixed in the vibration system of basin frame and drive the magnetic circuit of vibration system vibration, magnetic circuit has the magnetic gap, vibration system includes the sound-feeding membrane, connects the skeleton and the elastic support of sound-feeding membrane the lower sound membrane of skeleton, sound-feeding membrane includes the dome portion and encircles the book ring portion that the dome portion set up, the dome portion includes the body portion and from the two opposite side sunken formation's of body portion groove, dodge the groove with form between the book ring portion and dodge the clearance, the skeleton includes the body portion and from the body portion is along being close to the boss that sound-feeding membrane direction extension formed, the boss sets up in dodging in the clearance the utility model provides a loudspeaker, be favorable to improving the structural strength of vibration, reduce the deflection of skeleton in the vibration process, the symmetry of the vibration system is improved, and vibration swing is reduced.

Description

Loudspeaker

Technical Field

The utility model relates to an acoustoelectric field especially relates to a loudspeaker.

Background

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 a mobile phone are very diverse, one of which is a high-quality music function, and thus, a speaker for playing sound is widely applied to the current smart mobile devices.

Referring to fig. 1, the speaker of the related art includes a frame 201, a vibration system 202 fixed to the frame 201, and a magnetic circuit system 203 disposed in the frame 201 and driving the vibration system 202 to vibrate, where the vibration system 202 includes a framework 2021 disposed around the magnetic circuit system 203 and a dome 2022 connected to the framework 2021.

However, in such a structure in which the skeleton 2021 directly abuts against the dome portion 2022, the degree of symmetry between the dome portion and the skeleton is not high, so that the skeleton 2021 vibrates asynchronously at different positions of the skeleton 2021 during the vibration of the speaker, and there is relative displacement, which easily causes deformation of the skeleton 2021, generates vibration and sway, and affects the acoustic performance of the speaker.

Therefore, it is necessary to provide a speaker which is beneficial to improving the structural strength of vibration, reducing the deformation of the framework in the vibration process, improving the symmetry of the vibration system and reducing vibration swing to solve the above problems.

SUMMERY OF THE UTILITY MODEL

To the above problem, an object of the utility model is to provide a structural strength who is favorable to improving the vibration reduces the deflection of skeleton in the vibration process is favorable to promoting vibration system's symmetry reduces the speaker that the vibration swayd.

For solving the technical problem, the utility model discloses an embodiment provides a loudspeaker, include the basin frame, be fixed in the vibration system and the drive of basin frame the magnetic circuit of vibration system vibration, magnetic circuit has the magnetic gap, vibration system includes the sound membrane, connects the skeleton and the elastic support of sound membrane the lower sound membrane of skeleton, the sound membrane includes the dome portion and encircles the book ring portion that the dome portion set up, the dome portion includes this somatic part portion and certainly the groove of dodging of the sunken formation of double-phase offside of this somatic part, dodge the groove with it dodges the clearance to form between the ring portion to roll over, the skeleton includes the main part and certainly the main part is along being close to the boss that the sound membrane direction extended to form, the boss set up in dodge in the clearance.

Preferably, the main body includes two first side walls disposed opposite to each other and two second side walls connecting the two first side walls, the length of the first side wall is greater than that of the second side wall, and the avoiding groove is formed by recessing the two second side walls.

Preferably, the body portion includes a first support portion in a rectangular ring shape and a second support portion formed by bending and extending from a periphery of the first support portion, the boss extends from a position corresponding to the avoidance gap from the first support portion, and the body portion abuts against the first support portion.

Preferably, the lower sound film comprises a conducting strip and a lower vibrating strip which are attached to each other, and two ends of the second supporting part are respectively abutted to the bending ring part and the conducting strip along the vibration direction of the vibration system.

Preferably, the ring folding part comprises a first film body surrounding the top of the ball and a second film body formed by vertically bending and extending the periphery of the first film body, the first film body arches away from the basin frame to form a top of the ball, and the inner wall of the second film body is connected with the outside of the basin frame.

Preferably, the vibration system further includes a voice coil inserted into the magnetic gap and driving the upper diaphragm to vibrate and generate sound, the main body further includes a third support portion formed by bending and extending from an inner side of the first support portion, and the third support portion abuts against the voice coil and is used for supporting the voice coil.

Preferably, the magnetic circuit system includes an upper plate, a lower plate, and a main magnetic portion and a plurality of auxiliary magnetic portions located between the upper plate and the lower plate, the main magnetic portion and the plurality of auxiliary magnetic portions are fixedly disposed on the lower plate, and the plurality of auxiliary magnetic portions are disposed around the main magnetic portion and spaced from the main magnetic portion to form the magnetic gap.

Preferably, the magnetic circuit system further includes a main pole core attached to the main magnetic portion and an auxiliary pole core attached to the auxiliary magnetic portion, and the main pole core and the auxiliary pole core are respectively disposed at one end of the main magnetic portion and one end of the auxiliary magnetic portion away from the lower clamp plate.

Compared with the prior art, the utility model provides a loudspeaker, through setting up the top of the ball portion includes the body portion and from the two opposite side sunken formation of the body portion dodge the groove, make it dodge to form the clearance to dodge between groove and the ring portion, simultaneously, set up the skeleton includes the main part and from the main part along being close to the boss that the extension of sound membrane direction formed, set up the boss in dodge the clearance, namely through setting up the top of the ball portion that is "H" type, make the area maximize of top of the ball portion, be favorable to promoting the thing structural strength of vibration, reduce the deflection of skeleton in the vibration process, on the other hand, the groove of dodging of top of the ball portion matches with the boss characteristic shape of the skeleton, the boss can be regarded as the assembly positioning characteristic of top of the ball portion, promote the top-skeleton symmetry, the symmetry of the vibration system is improved, and vibration swing is reduced.

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 will be 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 sectional view of a related art speaker;

fig. 2 is a schematic perspective view of a speaker according to the present invention;

fig. 3 is an exploded schematic view of a three-dimensional structure of a speaker according to the present invention;

fig. 4 is an exploded schematic view of a three-dimensional structure of a top of a ball and a frame in a speaker according to the present invention;

fig. 5 is a cross-sectional view of the speaker shown in fig. 2 taken along the line C-C.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the following will explain in detail each embodiment of the present invention with reference to the accompanying drawings. However, it will be appreciated by those of ordinary skill in the art that in various embodiments of the invention, numerous technical details are set forth in order to provide a better understanding of the invention. However, the technical solution claimed in the present invention can be realized without these technical details and various changes and modifications based on the following embodiments.

Referring to fig. 2 to 5, the present invention provides a speaker 100, wherein the speaker 100 includes a frame 10, and a vibration system 20 fixed to the frame 10, i.e. a magnetic circuit system 30 disposed in the frame 10 and driving the vibration system 20 to vibrate. Wherein the magnetic circuit 30 has a magnetic gap 101.

The vibration system 20 includes a frame 21 surrounding the magnetic circuit system 30, an upper diaphragm 22 and a lower diaphragm 23 connected to both ends of the frame 21, and a voice coil 24 inserted into the magnetic gap 101 and driving the upper diaphragm 22 to vibrate.

The frame 21 includes a main body portion 211 and a boss 212 extending from the main body portion 211 in a direction close to the upper diaphragm 22.

Specifically, the main body portion 211 includes a first support portion 2111 having a rectangular ring shape, a second support portion 2112 bent and extended from a peripheral edge of the first support portion 2111, and a third support portion 2113 bent and extended from an inner side of the first support portion 2111.

The upper diaphragm 22 includes a ball top 221 and a ring-folded portion 222 disposed around the ball top 221.

The ball top 221 includes a body portion 2211 and escape grooves 2212 formed by being recessed from opposite sides of the body portion 2211. Wherein, an avoidance gap 102 is formed between the avoidance groove 2212 and the folded ring part 222. The boss 212 is disposed in the clearance gap 102. So set up, make the ball top 221 dodge the groove 2212 with the skeleton 21 the boss 212 characteristic shape matches, the boss 212 can be regarded as the assembly positioning characteristic of ball top 221 promotes ball top-skeleton symmetry, is favorable to promoting vibration system 20's symmetry reduces the vibration and sways.

Specifically, the main body 2211 includes two first side walls 2214 disposed opposite to each other and two second side walls 2215 connecting the two first side walls. The length of the first side wall 2214 is greater than that of the second side wall 2215, and the avoiding groove 2212 is concavely formed from the two second side walls 2215. Of course, this is not a limitation of the present invention, and in other embodiments, the avoiding groove 2212 may be disposed on the two first side walls 2215. Through setting up dodge groove 2212, make the area maximize at ball top is favorable to promoting the east and west structural strength of vibration, reduces the deflection of skeleton in the vibration process.

The annular folding portion 222 includes a first membrane 2221 surrounding the spherical top 221 and a second membrane 2222 formed by vertically bending and extending from the periphery of the first membrane 2221. The first membrane 2221 is arched in a direction away from the frame 10 to form a dome 103, and the inner wall of the second membrane 2222 is connected to the outer side of the frame 10.

Specifically, the boss 212 is formed to extend from the first support portion 2111 corresponding to the escape gap 102, the body portion 2211 abuts against the first support portion 2111, and the third support portion 2113 abuts against the voice coil 24 to support the voice coil 24.

The lower sound film 23 includes a conductive sheet 231 and a lower diaphragm 232 attached to each other. Along the vibration direction of the vibration system 20, both ends of the second support portion 2112 are respectively abutted against the loop portion 222 and the conductive sheet 231.

The conducting strip 231 is connected with the voice coil 24 through a conducting wire and is used for connecting an external power supply device to supply power to the voice coil 24.

The magnetic circuit system 30 includes an upper plate 31, a lower plate 32, a main magnetic portion 33 and a plurality of auxiliary magnetic portions 34 located between the upper plate 31 and the lower plate 32, a main pole core 35 attached to the main magnetic portion 33, and an auxiliary pole core 36 attached to the auxiliary magnetic portions 34. The main magnetic part 33 and the plurality of auxiliary magnetic parts 34 are fixedly arranged on the lower clamping plate 32, and the plurality of auxiliary magnetic parts 34 are arranged around the main magnetic part 33 and are arranged at intervals with the main magnetic part 33 to form the magnetic gap 101.

Specifically, the main pole core 35 and the auxiliary pole core 36 are respectively disposed at one ends of the main magnetic portion 33 and the auxiliary magnetic portion 34 far away from the lower clamp plate 31.

The utility model provides a loudspeaker, through setting up the top of the ball includes the body portion and from the groove of dodging that the two opposite side depressions of the body portion formed, make the groove of dodging with form between the ring portion of dodging, simultaneously, set up the skeleton includes the main part and from the main part extends the boss that forms along being close to the sound membrane direction, will the boss set up in dodge the clearance, namely through setting up to be "H" type the top of the ball, make the area maximize of top of the ball, be favorable to promoting the thing structural strength of vibration, reduce the deflection of skeleton in the vibration process, on the other hand, top of the ball the groove of dodging matches with the boss characteristic shape of skeleton, the boss can be regarded as the assembly positioning characteristic of top of the ball, promotes top of the ball-skeleton symmetry, is favorable to promoting vibration system's symmetry, reducing the vibration swing.

It will be understood by those skilled in the art that the foregoing embodiments are specific to the implementation of the present invention and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.

Claims

1. The utility model provides a loudspeaker, its includes the basin frame, is fixed in the vibration system and the drive of basin frame the magnetic circuit of vibration system vibration, magnetic circuit has the magnetic gap, vibration system includes the sound membrane, connects go up the skeleton and the elastic support of sound membrane the lower sound membrane of skeleton, a serial communication port, it includes the dome portion and encircles to go up the sound membrane the book ring portion that the dome portion set up, the dome portion includes the body portion and certainly the groove of dodging that the two-phase contralateral recesses of body portion formed, dodge the groove with it dodges the clearance to form between the ring portion to roll over, the skeleton include and certainly the main part is along being close to go up the boss that sound membrane direction extended and form, the boss set up in dodging the clearance.

2. The speaker of claim 1, wherein the body portion includes two first sidewalls disposed opposite to each other and two second sidewalls connecting the two first sidewalls, the first sidewalls having a length greater than that of the second sidewalls, and the avoiding groove is formed by recessing the two second sidewalls.

3. The speaker as claimed in claim 2, wherein the main body includes a first support portion having a rectangular ring shape and a second support portion bent and extended from a peripheral edge of the first support portion, the boss is extended from a position corresponding to the avoidance gap of the first support portion, and the main body abuts against the first support portion.

4. The loudspeaker of claim 3, wherein the lower diaphragm comprises a conductive plate and a lower diaphragm, the conductive plate and the lower diaphragm are attached to each other, and two ends of the second support part are respectively abutted to the loop part and the conductive plate along the vibration direction of the vibration system.

5. The loudspeaker of claim 4, wherein the bending part comprises a first membrane body arranged around the top of the dome and a second membrane body formed by bending and extending vertically from the periphery of the first membrane body, the first membrane body is arched in the direction away from the frame to form the dome, and the inner wall of the second membrane body is connected with the outer side of the frame.

6. The speaker of claim 3, wherein the vibration system further includes a voice coil inserted into the magnetic gap and driving the upper diaphragm to vibrate and generate sound, and the main body further includes a third support portion bent and extended from an inner side of the first support portion, the third support portion abutting against the voice coil and supporting the voice coil.

7. The loudspeaker of claim 6, wherein the magnetic circuit system comprises an upper clamp plate, a lower clamp plate, and a main magnetic portion and a plurality of auxiliary magnetic portions located between the upper clamp plate and the lower clamp plate, the main magnetic portion and the plurality of auxiliary magnetic portions being fixedly disposed on the lower clamp plate and the plurality of auxiliary magnetic portions being disposed around the main magnetic portion and spaced apart from the main magnetic portion to form the magnetic gap.

8. The loudspeaker of claim 7, wherein the magnetic circuit further comprises a main pole core attached to the main magnetic portion and a sub pole core attached to the sub magnetic portion, the main pole core and the sub pole core being respectively disposed at ends of the main magnetic portion and the sub magnetic portion away from the lower clamp plate.