CN210093499U

CN210093499U - Loudspeaker

Info

Publication number: CN210093499U
Application number: CN201920841283.0U
Authority: CN
Inventors: 胡洪建; 吴树文
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-02-18
Anticipated expiration: 2029-06-03

Abstract

The utility model provides a loudspeaker, including vibration system, the drive that has first vibrating diaphragm vibration sound production's magnetic circuit and accommodating vibration system with magnetic circuit's basin frame, magnetic circuit locates including exposing the outer yoke of basin frame, the yoke is including being close to the upper surface of first vibrating diaphragm, loudspeaker still include with the yoke reaches the basin frame cooperation forms accommodating space's ventilative separator, ventilative separator one end is fixed in upper surface, the other end with basin frame fixed connection. The utility model discloses a speaker can make the yoke expose to ventilative separator is difficult for droing.

Description

Loudspeaker

[ technical field ] A method for producing a semiconductor device

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

[ 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 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.

In the related art, a speaker includes a vibration system, a magnetic circuit for driving the vibration system, and a frame for accommodating the magnetic circuit and the vibration system, wherein the magnetic circuit, the vibration system, and the frame enclose an inner cavity, the magnetic circuit is provided with a magnetic yoke, and a ventilation spacer is disposed on a bottom surface of the magnetic yoke, so that an air resistance between the inner cavity and an external environment is adjusted by the ventilation spacer.

However, the breathable isolation piece is bonded on the bottom surface of the magnetic yoke through glue, the glue cannot bear higher temperature and higher humidity, the hidden danger of falling exists, and the reliability problem exists when equipment provided with the breathable isolation piece is used; the breathable partition piece is fixed on the bottom surface of the magnetic yoke, so that the assembly of the magnetic yoke and other devices in the mobile equipment is restricted, the overall space utilization rate of the mobile equipment is influenced, in addition, the breathable partition piece also needs to occupy a certain height space, and the development requirement of the miniaturization of the loudspeaker is not facilitated.

Therefore, there is a need to provide a new speaker to solve the above problems.

[ Utility model ] content

An object of the utility model is to provide a can make the yoke expose to speaker that ventilative separator is difficult for droing.

The utility model provides a loudspeaker, including vibration system, the drive that has first vibrating diaphragm vibration sound production's magnetic circuit and accommodating vibration system with magnetic circuit's basin frame, magnetic circuit locates including exposing the outer yoke of basin frame, the yoke is including being close to the upper surface of first vibrating diaphragm, loudspeaker still include with the yoke reaches basin frame cooperation forms accommodating space's ventilative separator, ventilative separator one end is fixed in upper surface, the other end with basin frame fixed connection.

Preferably, the breathable separator is fixed to the upper surface by gluing.

Preferably, the yoke includes a body portion located at a middle position and flanges extending outward from two ends of the body, the body portion includes a first upper surface close to the first diaphragm, the flanges include a second upper surface close to the first diaphragm, the first upper surface and the second upper surface jointly form the upper surface, the second upper surface and the first upper surface are located on different planes, a distance between the second upper surface and the first diaphragm is greater than a distance between the first upper surface and the first diaphragm, and the air-permeable spacer is fixed to the second upper surface.

Preferably, the number of the breathable isolating pieces is two, and the two breathable isolating pieces are symmetrically arranged at two ends of the magnetic yoke.

Preferably, the breathable partition comprises a first part, a second part and a third part, wherein the second part is parallel to the first part and is arranged at an interval, the third part is connected with the first part and the second part, the first part is fixed on the second upper surface, the second part is fixedly connected with the basin frame, and the third part is in smooth transition.

Preferably, the first portion, the second portion and the third portion are integrally formed by a hot pressing process.

Preferably, the loudspeaker further comprises a main magnetic steel assembled in the center of the magnetic yoke, a main pole core attached to the surface of the main magnetic steel, an auxiliary magnetic steel annularly arranged around the main magnetic steel, and an auxiliary pole core attached to the surface of the auxiliary magnetic steel, the main magnetic steel and the auxiliary magnetic steel form a magnetic gap at an interval, the vibration system further comprises a voice coil fixed on the first vibrating diaphragm, and the voice coil is suspended in the magnetic gap.

Preferably, the vibration system further comprises an elastic supporting member for elastically supporting the vibration system, one end of the elastic supporting member is clamped between the frame and the second portion, and the other end elastically supports the voice coil.

Compared with the prior art, in the loudspeaker provided by the utility model, the breathable isolating piece is fixed on the upper surface of the magnetic yoke, so that the magnetic yoke can be completely exposed, the assembling performance of the loudspeaker and other devices is improved, the contact between a gluing part and the outside can be avoided, the possibility of separation of the breathable isolating piece is reduced, and the reliability of the loudspeaker is improved; in addition, the ventilating partition is positioned on the inner side of the magnetic yoke, so that extra space is not required to be occupied, the overall height of the loudspeaker can be reduced, and the requirement for miniaturization is met.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of a speaker according to the present invention;

fig. 2 is an exploded view of the speaker shown in fig. 1;

FIG. 3 is a cross-sectional view of the speaker shown in FIG. 1 taken along line III-III;

FIG. 4 is a schematic view of the assembled relationship between the yoke and the air-permeable partition member shown in FIG. 2;

fig. 5 is an assembly structure view of the yoke and the air-permeable barrier shown in fig. 4.

[ 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.

Referring to fig. 1-3, the present invention provides a speaker 100, wherein the speaker 100 includes a frame 1, a vibration system 2, a magnetic circuit system 3 and a ventilation spacer 4.

Basin frame 1 is rectangle frame column structure, its include roof 11, with relative diapire 12 that sets up of roof 11 and connection roof 11 with the lateral wall 13 of diapire 12, lateral wall 13 includes the long lateral wall 131 that two parallel intervals set up and locates the both ends of long lateral wall 131 are connected two short lateral wall 132 of long lateral wall 131, long lateral wall 131 reaches short lateral wall 132 connects end to end in proper order.

Vibration system 2 is used for vibrating the sound production, and is concrete, vibration system 2 is including the first vibrating diaphragm 21 that is used for vibrating the sound production, is located the below drive of first vibrating diaphragm 21 vibrates the voice coil loudspeaker voice coil 22 of sound production and is located the below elastic support of voice coil loudspeaker voice coil 22 the elastic support piece 23 of voice coil loudspeaker voice coil 22.

The first diaphragm 21 is fixed to the top wall 11, one end of the elastic supporting member 23 is fixed to the bottom wall 12, and the other end elastically supports the voice coil 22. Further, the number of the elastic supporting members 23 is two, two of the elastic supporting members 23 are symmetrically arranged on two opposite sides of the basin stand 2, and specifically, the elastic supporting members 23 are arranged on one side of the short side wall 132.

The elastic supporting member 23 includes a flexible circuit board 231 and a second diaphragm 232 stacked on the flexible circuit board 231, one end of the second diaphragm 232 is fixed to the voice coil 22, and the other end is fixed to the bottom wall 12. The flexible circuit board 231 is used for supporting the voice coil 22 and for electrically connecting the voice coil 22 with an external power supply; the second diaphragm 232 is used to reinforce the vibration of the first diaphragm 21 and prevent the polarization of the first diaphragm 21.

The magnetic circuit system 3 is used for driving the vibration system 2 to vibrate and produce sound. Specifically, the magnetic circuit system 3 includes a magnetic yoke 31 exposed outside the frame 1, a main magnetic steel 32 assembled in the center of the magnetic yoke 31, a main pole core 33 attached to the surface of the main magnetic steel 32, an auxiliary magnetic steel 34 annularly arranged around the main magnetic steel 32, and an auxiliary pole core 35 attached to the surface of the auxiliary magnetic steel 34. The main magnetic steel 32 and the auxiliary magnetic steel 34 form a magnetic gap at an interval, and the voice coil 22 is suspended in the magnetic gap. The main pole core 33 and the auxiliary pole core 35 are made of magnetic conductive materials and have a magnetic conductive effect.

The magnetic yoke 31 has a flat plate structure, and includes a body 311 located at a middle position and flanges 312 extending from two ends of the body 311 toward a direction close to the frame 1, and the flanges 312 and the body 311 are integrally formed. In particular, the flange 312 is located on one side of the short sidewall 132.

The body part 311 includes a first upper surface 3111 adjacent to the first diaphragm 21, the flange 312 includes a second upper surface 3121 adjacent to the first diaphragm 31, the first upper surface 3111 and the second upper surface 3121 together form an upper surface 310, the second upper surface 3121 and the first upper surface 3111 are located on different planes, and a distance between the second upper surface 3121 and the first diaphragm 21 is greater than a distance between the first upper surface 3111 and the first diaphragm 21, so that the flange 312 and the body part 311 have a stepped structure, and the flange 312 is located below the body part 311.

Referring to fig. 4 and 5, one end of the air-permeable partition 4 is fixed on the upper surface 310, and the other end is fixedly connected to the basin stand 1, specifically, the air-permeable partition 4 is fixed on the upper surface 310 by gluing. The ventilating partition 4 is matched with the basin frame 1 and the magnetic yoke 31 to form an accommodating space, and the voice coil 22, the elastic support 23, the main magnetic steel 32, the auxiliary magnetic steel 34, the main pole core 33 and the auxiliary pole core 35 are accommodated in the accommodating space. Further, the first diaphragm 21 closes an opening end of the accommodating space to form a closed inner cavity, and the air-permeable isolating member 4 is used for adjusting air resistance between the inner cavity and an external environment.

The air permeable partition 4 comprises a first portion 41, a second portion 42 and a third portion 43, wherein the second portion 42 is arranged in parallel with the first portion 41 at a distance, the third portion 43 connects the first portion 41 and the second portion 42, and the third portion 43 is in a smooth transition. Preferably, the first portion 41, the second portion 42 and the third portion 43 are integrally formed by a hot pressing process.

Specifically, the first portion 41 is fixed to the second upper surface 3121, and the second portion 42 is fixed to the frame 1, so that the magnetic yoke 31 can be completely exposed, and the assembling performance of the speaker 100 and other devices can be improved; moreover, the air-permeable partition 4 is fixed on the upper surface 310 of the magnetic yoke 31, so that the contact between the glued part and the outside can be avoided, the possibility of the air-permeable partition 4 being separated is reduced, and the reliability of the loudspeaker 100 is improved; in addition, the air-permeable partition 4 is located inside the magnetic yoke 31, and does not occupy additional space, so that the overall height of the speaker 100 can be reduced, and the requirement for miniaturization can be met.

Compared with the prior art, in the speaker 100 provided by the present invention, the air-permeable partition 4 is fixed on the upper surface 310 of the magnetic yoke 31, so that the magnetic yoke 31 can be completely exposed, the assembling performance of the speaker 100 and other devices can be improved, the contact between the glue-applying part and the outside can be avoided, the possibility of the air-permeable partition 4 being separated can be reduced, and the reliability of the speaker 100 can be improved; in addition, the air-permeable partition 4 is located inside the magnetic yoke 31, and does not occupy additional space, so that the overall height of the speaker 100 can be reduced, and the requirement for miniaturization can be met.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a loudspeaker, is including the vibration system, the drive that have first vibrating diaphragm the magnetic circuit of vibration system vibration sound production and accept vibration system with magnetic circuit's basin frame, magnetic circuit includes that the exposure is located the outer yoke of basin frame, a serial communication port, the yoke is including being close to the upper surface of first vibrating diaphragm, loudspeaker still include with the yoke reaches the basin frame cooperation forms accommodating space's ventilative separator, ventilative separator one end is fixed in the upper surface, the other end with basin frame fixed connection.

2. A loudspeaker according to claim 1, wherein the air-permeable barrier is secured to the upper surface by gluing.

3. The speaker of claim 1, wherein the yoke includes a body portion at a middle position and flanges extending outward from both ends of the body, the body portion includes a first upper surface adjacent to the first diaphragm, the flanges include a second upper surface adjacent to the first diaphragm, the first upper surface and the second upper surface together constitute the upper surface, the second upper surface and the first upper surface are located on different planes, and a distance between the second upper surface and the first diaphragm is greater than a distance between the first upper surface and the first diaphragm, and the air-permeable spacer is fixed to the second upper surface.

4. The speaker of claim 3, wherein the number of the air-permeable partitions is two, and the two air-permeable partitions are symmetrically disposed at both ends of the yoke.

5. A loudspeaker according to claim 3, wherein the air-permeable barrier comprises a first portion secured to the second upper surface, a second portion spaced apart from and parallel to the first portion, and a third portion connecting the first and second portions, the second portion being fixedly connected to the frame, the third portion having a smooth transition.

6. The loudspeaker of claim 5, wherein the first portion, the second portion, and the third portion are integrally formed using a hot press process.

7. The loudspeaker of claim 5, further comprising a main magnetic steel assembled in the center of the magnetic yoke, a main pole core attached to the surface of the main magnetic steel, an auxiliary magnetic steel surrounding the main magnetic steel, and an auxiliary pole core attached to the surface of the auxiliary magnetic steel, wherein the main magnetic steel and the auxiliary magnetic steel form a magnetic gap at an interval, and the vibration system further comprises a voice coil fixed on the first diaphragm, and the voice coil is suspended in the magnetic gap.

8. The loudspeaker of claim 7, wherein the vibration system further comprises an elastic support member for elastically supporting the vibration system, one end of the elastic support member being interposed between the frame and the second portion, and the other end of the elastic support member elastically supporting the voice coil.