CN211531295U

CN211531295U - Sound production device

Info

Publication number: CN211531295U
Application number: CN201922484354.9U
Authority: CN
Inventors: 刘忠原
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-18
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a sounding device. The utility model discloses a this sounder include the upper cover, with the upper cover encloses the lower cover of establishing formation accommodating space and accept in speaker monomer in the accommodating space, speaker monomer includes the vibrating diaphragm, the upper cover is including just right the roof of vibrating diaphragm, the vibrating diaphragm include the ball top and to the convex protruding structure of roof direction, the ball top includes four turnings, protruding structure sets up on four turnings. Set up on the vibrating diaphragm to being close to the convex protruding structure of roof direction, when the amplitude is unusual too big, protruding structure can be direct and the roof contact, stops the further grow of vibration range of vibrating diaphragm to avoid the destruction of speaker monomer internal component, played the effect of protection sound production device.

Description

Sound production device

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic technology field especially relates to a sounding device.

[ background of the invention ]

With the rapid development of science and technology, in the rapid development process of audio equipment, people have stronger and stronger requirements on the functionality of products, and more people have higher requirements on the audio performance and the like of sound production devices. In the related art, when the amplitude is abnormally excessive, the internal components of the sounding device are easily damaged.

[ Utility model ] content

An object of the utility model is to provide a can protect free vocal device of speaker under the too big condition of amplitude.

The technical scheme of the utility model as follows:

a sounding device comprises an upper cover, a lower cover and a loudspeaker single body, wherein the lower cover and the upper cover are arranged in a surrounding mode to form an accommodating space, the loudspeaker single body is accommodated in the accommodating space, the loudspeaker single body comprises a vibrating diaphragm, and the upper cover comprises a top wall opposite to the vibrating diaphragm; the vibrating diaphragm comprises a spherical top and a protruding structure protruding towards the top wall, the spherical top comprises four corners, and the protruding structure is arranged on the four corners.

Preferably, the upper cover further includes an upper side wall extending from the top wall to a direction close to the speaker unit, and the top wall and the upper side wall are of an integrally formed structure.

Preferably, the upper cover further comprises an upper side wall extending from the top wall to a direction close to the speaker unit, and the top wall is a steel sheet fixedly connected with the upper side wall.

Preferably, the upper side wall is provided with a through hole for covering the steel sheet conveniently.

Preferably, the raised structure is a circular piece.

Preferably, the protruding structure is a spherical bump.

Preferably, the sound production device further comprises a breathable separator clamped between the speaker unit and the lower cover.

Preferably, the lower cover includes a bottom wall facing the air-permeable partition and a lower side wall extending from the bottom wall to a direction close to the air-permeable partition, and the air-permeable partition is sandwiched between the lower side wall and the speaker unit.

The beneficial effects of the utility model reside in that: the utility model discloses in, set up on the vibrating diaphragm to being close to the convex protruding structure of roof direction, when the amplitude is unusual too big, protruding structure can be directly and roof contact, blocks the further grow of vibration range of vibrating diaphragm to avoid the destruction of speaker monomer internal component, played the effect of protection sounder. The raised structures are arranged on four corners of the ball top, so that the amplitude of the vibrating diaphragm can be uniformly suppressed, balance is kept, and the vibrating diaphragm is prevented from being damaged due to the fact that one end of the vibrating diaphragm is out of balance.

[ description of the drawings ]

Fig. 1 is a schematic view of an overall structure of a sound generating device according to the present invention;

fig. 2 is an exploded schematic view of a sound device according to the present invention;

FIG. 3 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 4 is an enlarged partial view of FIG. 3 within the dashed circle B;

fig. 5 is an exploded schematic view of the speaker unit of the present invention;

fig. 6 is an amplitude test result diagram of the present invention.

[ detailed description ] embodiments

The present invention will be further described with reference to the accompanying drawings and embodiments.

As shown in fig. 1-4, the present invention discloses a sound-producing device, which includes an upper cover 1, a lower cover 2 enclosing with the upper cover 1 to form an accommodating space 8, and a speaker unit 3 accommodated in the accommodating space 8, wherein the speaker unit 3 includes a diaphragm 31, the upper cover 1 includes a top wall 11 facing the diaphragm 31 and an upper side wall 12 extending from the top wall 11 to a direction close to the speaker unit 3, and the top wall 11, the upper side wall 12 and the diaphragm 31 enclose to form a front cavity 81; the diaphragm 31 is provided with a dome 311 and a convex structure 313 protruding toward the top wall 11. The dome 311 includes four corners on which the protrusion structures 313 are disposed.

Compared with the prior art, the utility model discloses in, the space of antechamber 81 is the vibration space of vibrating diaphragm 31, sets up on the vibrating diaphragm 31 to being close to the convex protruding structure 313 of 11 directions of roof, and when the amplitude was unusual too big, protruding structure 313 can be directly and roof 11 contacts, stops the further grow of vibration range of vibrating diaphragm 31 to avoid the destruction of 3 internal components of speaker monomer, played the effect of protection sound production device. The convex structures 313 are arranged on the four corners of the ball top 311, so that the amplitude of the diaphragm 31 can be uniformly suppressed, balance can be maintained, and damage to the diaphragm 31 caused by unbalance of one end can be avoided.

In this embodiment, the top wall 11 is a steel sheet 4 fixedly connected to the upper side wall 12, and the upper side wall 12 is provided with a through hole 121 for covering the steel sheet 4. Can dismantle fixed connection between steel sheet 4 and the last lateral wall 12, steel sheet 4 covers and makes upper cover 1 and lower cover 2 enclose to establish on the through hole 121 of last lateral wall 12 and form complete seal structure, can reduce the consumptive material on the upper cover 1, also reduces the area occupied of steel sheet 4 as far as possible, can not make the sounder of this scheme thicken.

Of course, the utility model discloses final roof also need not be the steel sheet, also can be the same with the upside wall material matter, and roof and last lateral wall be the integrated into one piece structure, and processing is convenient, easily shaping.

Referring to fig. 5, the speaker unit 3 further includes a frame 32, a magnetic circuit 33 fixed on the frame 32, and a voice coil 34 fixedly connected to the diaphragm 31; the magnetic circuit system 33 includes an iron core 331 inside the voice coil 34 and a magnetic steel 332 outside the voice coil 34 and forming a magnetic gap with the iron core 331; the diaphragm 31 further includes a ring 312 disposed around the dome 311, the ring 312 includes a ring portion 3121 bent and extended from the periphery of the dome 311, and a fixing portion 3122 extended from an end of the ring portion 3121 away from the dome 311 to a direction away from the dome 311, the fixing portion 3122 is fixed to the basin stand 32; the loop portion 3121 is curved and projected in a direction approaching the steel sheet.

In the present embodiment, the protrusion structure 313 is a circular piece. The convex structure 313 is a circular sheet, and the contact surface of the convex structure contacting with the steel sheet is a plane, so that the stress is uniform, and the steel sheet cannot be damaged. Not only can inhibit the vibration of the vibrating diaphragm by a large margin, but also can play a certain protection role on the vibrating diaphragm.

In another embodiment of the present invention, the protruding structure 313 is a spherical bump, the contact surface of the spherical bump is a smooth arc surface, and the area occupied by the smooth arc surface on the dome is small, while the steel sheet is prevented from being damaged during the contact process with the steel sheet.

In this embodiment, the sound generating device further includes an air-permeable partition 5 sandwiched between the speaker unit 3 and the lower cover 2, the lower cover 2 includes a bottom wall 21 facing the air-permeable partition 5 and a lower side wall 22 extending from the bottom wall 21 to a direction close to the air-permeable partition 5, and the bottom wall 21, the lower side wall 22 and the air-permeable partition 5 enclose a rear cavity 82. The ventilation spacer 5 is arranged at the bottom of the speaker unit 3, so that the resonance of the housing caused by the operation of the speaker unit 3 can be inhibited, and the performance of the product can be improved. The lower cover 2 is provided with a leakage hole 23, and the leakage hole 23 and the sound outlet hole 13 are both communicated with the outside, so that the air pressure balance in the whole accommodating space 8 is realized.

The utility model discloses a sounder still includes FPC board 6 of being connected with 3 electricity of speaker monomer, and FPC board 6's one end is fixed on accommodating space 8's lower cover 2, and FPC board 6's the other end stretches out outside lower cover 2. The utility model discloses a sounder still locates the dustproof shock insulator 7 in the sound hole 13 outside including pasting, and dustproof shock insulator 7 can avoid the dust to get into accommodating space 8 in to play certain guard action.

With further reference to FIG. 6, the abscissa represents frequency (/ Hz) and the ordinate represents amplitude (/ mm). The contrast group is for not setting up the vocal device of protruding structure, and the experiment group does the utility model discloses a going on to set up the vocal device of protruding structure on the steel sheet, the line of getting from top to bottom in the picture is amplitude curve a on the contrast group in proper order, amplitude curve b under the contrast group, amplitude curve c and experiment group amplitude curve d under the experiment group. The sound production device can effectively restrain the amplitude effect of the loudspeaker monomer by arranging the convex structure on the steel sheet.

The above are only embodiments 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. The utility model provides a sounding device, including the upper cover, with the upper cover encloses the lower cover of establishing formation accommodating space and accept in speaker monomer in the accommodating space, speaker monomer includes the vibrating diaphragm, the upper cover is including just right the roof of vibrating diaphragm, a serial communication port, the vibrating diaphragm include the ball top and to the convex protruding structure of roof direction, the ball top includes four turnings, protruding structure sets up on four turnings.

2. The sounder device according to claim 1, wherein the cover further comprises an upper sidewall extending from the top wall in a direction toward the speaker unit, the top wall and the upper sidewall being of an integrally formed structure.

3. The sounder device according to claim 1, wherein the cover further comprises an upper side wall extending from the top wall in a direction approaching the speaker unit, and the top wall is a steel sheet fixedly connected to the upper side wall.

4. The sound production device of claim 3, wherein the upper sidewall is provided with a through hole for covering the steel sheet.

5. The sounder device according to claim 1, wherein the raised structure is a circular piece.

6. The sound production device of claim 1, wherein the raised structure is a bulbous bump.

7. The sounder device according to claim 1, further comprising a breathable spacer sandwiched between the speaker cell and the lower cover.

8. The sounder device according to claim 7, wherein the lower cover includes a bottom wall facing the air-permeable partition, and a lower side wall extending from the bottom wall in a direction approaching the air-permeable partition, the air-permeable partition being interposed between the lower side wall and the speaker unit.