CN214101757U

CN214101757U - Loudspeaker box

Info

Publication number: CN214101757U
Application number: CN202023345525.9U
Authority: CN
Inventors: 钟志威; 金鑫
Original assignee: AAC Acoustic Technologies Shenzhen Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Current assignee: AAC Technologies Holdings Shenzhen Co Ltd; AAC Microtech Changzhou Co Ltd; AAC Optoelectronic Changzhou Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-31
Anticipated expiration: 2030-12-31

Abstract

The utility model provides a loudspeaker box, including the epitheca, with the epitheca cooperation forms accommodating space's inferior valve and accept in sound production monomer in the accommodating space, sound production monomer still includes the leakage hole of intercommunication sound chamber and back chamber, leakage hole contains first leakage hole and second leakage hole, the speaker is still located including pasting sound production monomer covers respectively first leakage hole with the second leaks first damping screen cloth and the second damping screen cloth in leakage hole, first damping screen cloth with second damping screen cloth is used for adjusting leakage hole's leakage amount, the damping of first damping screen cloth is less than second damping screen cloth. The utility model discloses a speaker can restrain the rocking that speaker sound production monomer caused because of the air current asymmetry, has the noise few, advantage that acoustic performance is good.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

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

[ background of the invention ]

With the rapid development of mobile communication technology in recent years, consumers increasingly use mobile communication devices with voice functions, such as: portable telephones, handheld game devices, portable computers, and the like. The loudspeaker is used as a voice playing device, and the design of the loudspeaker directly influences the voice performance of the mobile communication equipment product. In order to meet the market demand for a thinner and higher sound quality, a higher demand is placed on the design of a speaker.

Because space restriction, the phonation monomer is usually placed in airtight back chamber asymmetric position in the current speaker, and paste the screen cloth/let out leakage quantity regulating part of locating the phonation monomer both sides leakage hole at present and adopt symmetrical design, when the speaker is in under the large-amplitude operating condition, the symmetrical design of current screen cloth/let out leakage quantity regulating part makes easily in the airtight back chamber near the leakage hole position of phonation monomer both sides form asymmetric air current, asymmetric air current forms asymmetric reaction force to speaker vibration system simultaneously, cause the phonation monomer to sway, thereby produce the noise.

Therefore, it is necessary to provide a speaker with asymmetric damping design of the leakage amount adjusting member at the leakage holes on both sides of the sounding unit to solve the above-mentioned drawbacks.

[ summary of the invention ]

An object of the utility model is to provide a restrain speaker monomer and sway, less speaker of noise.

The technical scheme of the utility model as follows:

the utility model provides a loudspeaker box, including the epitheca, with epitheca cooperation forms accommodating space's inferior valve and accept in sound production monomer in the accommodating space, sound production monomer will accommodating space separates into antechamber and back chamber, the inferior valve is acceptd including the fixing sound production free first inferior valve, certainly first inferior valve is along keeping away from the free direction of sound production is buckled the second inferior valve that extends, first inferior valve include with sound production monomer relative diapire, certainly the diapire to go up the casing direction buckle extend and connect respectively in the epitheca the first lateral wall, the second lateral wall of second inferior valve and certainly the diapire to extend in the accommodating space and with first lateral wall the support wall that second lateral wall interval set up, sound production monomer with support wall the diapire encloses and establishes the formation antechamber, sound production monomer includes the basin frame and is fixed in the vibration system that has the vibrating diaphragm and the system that has the magnetic gap of basin frame The magnetic circuit system comprises a magnetic yoke fixedly arranged on one side of the basin frame far away from the vibrating diaphragm, magnetic steel fixed on one side of the magnetic yoke far away from the basin frame and a magnetic bowl fixed on one side of the magnetic steel far away from the magnetic yoke, the magnetic bowl, the magnetic yoke, the basin frame and the vibrating diaphragm are arranged together to form a sound cavity, the sound production unit further comprises a leakage hole which is communicated with the sound cavity and the back cavity, the leakage holes include a first leakage hole disposed toward the first sidewall and a second leakage hole disposed toward the second sidewall, the loudspeaker also comprises a first damping mesh cloth and a second damping mesh cloth which are attached to the sound generating unit and respectively cover the first leakage hole and the second leakage hole, the first damping mesh cloth and the second damping mesh cloth are used for adjusting the leakage amount of the leakage holes, the damping of the first damping mesh cloth is smaller than that of the second damping mesh cloth.

Further, first leakage hole by the magnetism bowl the basin frame with first damping screen encloses establishes and forms, second leakage hole by the magnetism bowl the basin frame with second damping screen encloses and establishes and forms.

Further, the first sidewall and the second sidewall are disposed opposite to each other.

Further, the vibration system including set firmly in the basin frame be used for the vibrating diaphragm of vibration sound production, be fixed in the basin frame is close to the voice coil loudspeaker voice coil of one side of magnetic circuit and support the elastic support subassembly of voice coil loudspeaker voice coil, the vibrating diaphragm include the ball top and with the book ring that the ball top is connected, the voice coil loudspeaker voice coil extends to in the magnetic gap.

Further, the basin frame comprises an inner basin frame for fixing the voice coil and the dome, and an outer basin frame for fixing the folded ring and the magnetic yoke.

Furthermore, one end of the first damping mesh cloth and one end of the second damping mesh cloth are fixed to the magnetic bowl, and the other end of the first damping mesh cloth and the second damping mesh cloth are fixed to the outer basin frame.

Further, the grid density of the first damping mesh cloth is smaller than that of the second damping mesh cloth.

Further, the first damping mesh cloth and the second damping mesh cloth are both metal mesh cloth.

Furthermore, the first damping mesh cloth and the second damping mesh cloth are fixed on the sounding single body in a glue bonding or hot melting mode.

The beneficial effects of the utility model reside in that: compare in the screen cloth/let out leakage quantity regulating part of the symmetrical design of leakage hole in the sound production monomer both sides of current speaker, the utility model discloses a speaker is through letting out the leakage hole subsides at sound production monomer both sides and setting up the different screen cloth of damping, adjusts the acoustical resistance size of leakage hole in both sides through adjusting screen cloth net density to restrain the swing that sound production monomer caused because of the air current asymmetry in airtight back chamber, thereby reduce the production of speaker noise.

[ 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 a speaker box according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a speaker box according to an embodiment of the present invention;

fig. 3 is a cross-sectional view taken along AA' in fig. 1.

Fig. 4 is a schematic perspective view of a sounding unit provided in an embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line BB' of FIG. 4;

fig. 6 is a cross-sectional view taken along line CC' of 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. 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 to 6, a speaker box 100 includes an upper housing 1, a lower housing 2 cooperating with the upper housing 1 to form an accommodating space, and a sound generating unit 3 accommodated in the accommodating space, wherein the sound generating unit 3 divides the accommodating space into a front cavity 10 and a rear cavity 20, the lower housing 2 includes a first lower housing 21 for fixedly accommodating the sound generating unit 3, a second lower housing 22 bent and extended from the first lower housing 21 in a direction away from the sound generating unit 3, the first lower housing 21 includes a bottom wall 210 opposite to the sound generating unit, a first side wall 211 and a second side wall 212 bent and extended from the bottom wall 210 to the upper housing 1 and respectively connected to the upper housing 1 and the second lower housing 22, and a supporting wall 213 extending from the bottom wall 210 to the accommodating space and spaced from the first side wall 211 and the second side wall 212, first lateral wall 211 with second lateral wall 212 sets up relatively, sound production monomer 3 fix in support wall 213 and with diapire 210 interval sets up, sound production monomer 3 with support wall 213 diapire 210 encloses and establishes formation antechamber 10, sound production monomer 3 includes basin frame 4 and is fixed in the vibration system 5 that has vibrating diaphragm 51 of basin frame 4 and magnetic circuit 6 that has magnetic gap 60, magnetic circuit 6 including set firmly in basin frame 4 keeps away from the yoke 61 of vibrating diaphragm 51 one side, be fixed in yoke 61 keeps away from the magnet steel 62 of basin frame 4 one side and be fixed in magnet steel 62 keeps away from the magnetic bowl 63 of yoke 61 one side, magnetic gap 60 form in magnet steel 62. The magnetic bowl 63, yoke 61 the basin frame 4 and vibrating diaphragm 51 enclose jointly and establish and form the sound chamber, sound production monomer 3 still includes the intercommunication the sound chamber reaches the leakage hole 7 of back cavity 20.

The leakage hole 7 includes a first leakage hole 71 provided toward the first sidewall 211 and a second leakage hole 72 provided toward the second sidewall 212, the loudspeaker also comprises a first damping mesh cloth 81 and a second damping mesh cloth 82 which are attached to the sound generating unit 3 and respectively cover the first leakage hole 71 and the second leakage hole 72, the first leakage holes 71 are formed by enclosing the magnetic bowl 63, the basin stand 4 and the first damping mesh cloth 81, the second leakage holes 72 are formed by the magnetic bowl 63, the frame 4 and the second damping mesh 82, the first damping mesh 81 and the second damping mesh 82 are used for adjusting the leakage amount of the leakage holes 7, the damping of the first damping mesh 81 is less than the damping of the second damping mesh 82, and preferably, the grid density of the first damping mesh 81 is less than the grid density of the second damping mesh 82.

The vibration system 5 comprises a vibrating diaphragm 51 fixedly arranged on the frame 4 and used for vibrating and sounding, a voice coil 52 fixed on one side of the frame 4 close to the magnetic circuit system 6, and an elastic supporting component 53 supporting the voice coil 52, the vibrating diaphragm 51 comprises a ball top 511 and a folding ring 512 connected with the ball top 511, and the voice coil 52 extends into the magnetic gap 60.

The frame 4 includes an inner frame 41 for fixing the dome 511 and the voice coil 52, and an outer frame 42 for fixing the edge ring 512 and the yoke 61.

One end of the first damping mesh cloth 81 and one end of the second damping mesh cloth 82 are fixed to the magnetic bowl 63, and the other end of the first damping mesh cloth 81 and the other end of the second damping mesh cloth 82 are fixed to the outer basket 42.

The first damping mesh 81 and the second damping mesh 82 are both metal meshes, and in other embodiments, the first damping mesh 81 and the second damping mesh 82 may also be meshes made of chemical fiber materials, which may be specifically selected according to actual needs.

The first damping mesh cloth 81 and the second damping mesh cloth 82 are respectively fixed on the magnetic bowls 63 of the sound-producing single bodies and the outer frame 42 through glue bonding. In other embodiments, the first damping mesh 81 and the second damping mesh 82 may also be fixed to the sound generating unit 3 by a hot melting method. It can be understood that, the method of fixing the first damping mesh 81 and the second damping mesh 82 is also many, and the method can be specifically selected according to actual conditions, and is not exhaustive here, and no matter what kind of method is used to fix the first damping mesh 81 and the second damping mesh 82, the implementation of the embodiment of the present invention will not be affected.

Compared with the prior art, the utility model discloses an in the speaker box, according to the regional difference subsides of the airtight back chamber that the free leakage hole of sound production is located and establish the screen cloth that has different net density, adjust the acoustic resistance that the hole was let out to both sides, it is poor to form the air current in advance, and the sound production monomer that the air current asymmetry caused in the suppression speaker back chamber goes up the air current length direction sways, reduces the production of speaker noise for speaker acoustic performance is better.

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 utility model provides a loudspeaker box, including the epitheca, with epitheca cooperation forms accommodating space's inferior valve and accept in sound production monomer in the accommodating space, sound production monomer will accommodating space separates into antechamber and back chamber, the inferior valve is acceptd including the fixing sound production free first inferior valve, certainly first inferior valve is along keeping away from the free direction of sound production is buckled the second inferior valve that extends, first inferior valve include with sound production monomer relative diapire, certainly the diapire to go up the casing direction buckle extend and connect respectively in the epitheca the first lateral wall, the second lateral wall of second inferior valve and certainly the diapire to extend in the accommodating space and with first lateral wall the support wall that second lateral wall interval set up, sound production monomer with support wall the diapire encloses and establishes the formation antechamber, sound production monomer includes the basin frame and is fixed in the vibration system that has the vibrating diaphragm of basin frame and have the vibration clearance The magnetic circuit system comprises a magnetic yoke fixedly arranged on one side of the basin frame far away from the vibrating diaphragm, magnetic steel fixed on one side of the magnetic yoke far away from the basin frame, and a magnetic bowl fixed on one side of the magnetic steel far away from the magnetic yoke, the magnetic bowl, the magnetic yoke, the basin frame and the vibrating diaphragm are arranged together to form a sound cavity, the sound production unit further comprises a leakage hole which is communicated with the sound cavity and the back cavity, the leakage holes include a first leakage hole disposed toward the first sidewall and a second leakage hole disposed toward the second sidewall, the loudspeaker also comprises a first damping mesh cloth and a second damping mesh cloth which are attached to the sound generating unit and respectively cover the first leakage hole and the second leakage hole, the first damping mesh cloth and the second damping mesh cloth are used for adjusting the leakage amount of the leakage holes, the damping of the first damping mesh cloth is smaller than that of the second damping mesh cloth.

2. The loudspeaker enclosure of claim 1, wherein the first leak hole is defined by the magnetic bowl, the frame, and the first damping mesh, and the second leak hole is defined by the magnetic bowl, the frame, and the second damping mesh.

3. A loudspeaker enclosure according to claim 1, wherein the first and second side walls are oppositely disposed.

4. The loudspeaker box of claim 1, wherein the vibration system comprises a diaphragm fixed to the frame for generating sound by vibration, a voice coil fixed to a side of the frame close to the magnetic circuit system, and an elastic support assembly supporting the voice coil, the diaphragm comprises a dome and a corrugated rim connected to the dome, and the voice coil extends into the magnetic gap.

5. A loudspeaker enclosure according to claim 4, wherein the frame comprises an inner frame to which the voice coil and the dome are secured, and an outer frame to which the edge ring and the yoke are secured.

6. The loudspeaker enclosure of claim 5, wherein the first damping mesh and the second damping mesh are secured at one end to the magnetic bowl and at the other end to the outer frame.

7. A loudspeaker enclosure according to claim 1, wherein the first damping mesh has a mesh density less than the mesh density of the second damping mesh.

8. A loudspeaker enclosure according to any one of claims 1 to 7, wherein the first damping mesh and the second damping mesh are both metal meshes.

9. The loudspeaker enclosure according to any one of claims 1-7, wherein the first damping mesh and the second damping mesh are fixed to the sound generating unit by gluing or hot melting.