CN213661918U

CN213661918U - Loudspeaker box

Info

Publication number: CN213661918U
Application number: CN202022223115.0U
Authority: CN
Inventors: 宋威; 令狐荣林; 肖波; 章统; 孔晨亮
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-07-09
Anticipated expiration: 2030-09-30
Also published as: WO2022067972A1

Abstract

The utility model provides a loudspeaker box, which comprises a shell with a containing space and a sounding monomer; the shell is provided with a sound outlet, the sound outlet forms a side sound production structure, the sound production monomer comprises a vibrating diaphragm with a first annular folding ring part, the accommodating space is divided into a front cavity and a rear cavity by the sound production monomer, the vibrating diaphragm is accommodated in the front cavity, and when the vibrating diaphragm vibrates to produce sound, airflow formed by air in the front cavity is exchanged with the outside through the sound outlet; the first ring folding part is an arc-shaped structure which is of a rectangular structure and is formed by sinking, the first ring folding part comprises a first edge adjacent to the sound outlet, a second edge opposite to the first edge and two third edges which are respectively connected with the first edge and the second edge, and the first edge is located on the part right opposite to the sound outlet and is sunk towards the rear cavity to form a first avoiding groove so that the flow rate of airflow flowing through the sound outlet during vibration of the diaphragm is reduced. Compared with the prior art, the utility model discloses a little and the acoustic performance of air current noise of speaker box is excellent.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electroacoustic conversion field especially relates to an apply to speaker box of portable mobile electronic product.

[ background of the invention ]

The loudspeaker box is also called a loudspeaker, and is widely applied to portable mobile electronic products, such as mobile phones, so that audio signals are converted into sound to be played, and the loudspeaker box is high in loudness and amplitude.

A speaker box of the related art includes a housing having an accommodating space and a sound generating unit accommodated in the accommodating space; the shell is provided with a sound outlet penetrating through the shell, the accommodating space is divided into a front cavity and a rear cavity by the sound generating single body, and the front cavity is communicated with the outside by the sound outlet to form a side sound generating structure; the sounding monomer comprises a basin frame, a vibration system and a magnetic circuit system, wherein the vibration system is respectively fixed on the basin frame, the magnetic circuit system is provided with a magnetic gap, the magnetic circuit system drives the vibration system to vibrate and sound, and the vibration system comprises a vibrating diaphragm fixed on the basin frame and a voice coil fixed on the vibrating diaphragm and inserted into the magnetic gap to drive the vibrating diaphragm to vibrate and sound; the vibrating diaphragm is accommodated in the front cavity, and the vibrating diaphragm is provided with an arc-shaped structure and is an annular folded ring part.

However, when the diaphragm of the speaker box of the related art vibrates to generate sound, the airflow formed by the air in the front cavity is exchanged with the outside through the sound outlet, but because the corrugated rim portion of the diaphragm makes the internal cavity of the sound generating unit have a large volume, the corrugated rim portion is generally configured to be an arc-shaped structure formed by sinking towards the direction away from the rear cavity along the vibration direction of the diaphragm, and this structure makes the airflow generated in the front cavity when the diaphragm vibrates flow to the sound outlet, because of the blockage of the corrugated rim portion, the airflow is not smooth, and because of the arc-shaped structure of the corrugated rim portion, the airflow flowing channel of the airflow at the sound outlet is narrowed, so that the airflow velocity is high, thereby generating the noise of sound whistling, and making the acoustic performance of the speaker box poor.

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

[ Utility model ] content

An object of the utility model is to provide a speaker box that air current noise is little and acoustic performance is excellent.

In order to achieve the above object, the present invention provides a speaker box, which comprises a housing having an accommodating space and a sounding unit accommodated in the accommodating space; the shell is provided with a sound outlet penetrating through the shell, the sound generating monomer comprises a vibrating diaphragm with an annular first folding ring part, the sound generating monomer divides the accommodating space into a front cavity and a rear cavity, the front cavity is communicated with the outside through the sound outlet to form a side sound generating structure, the vibrating diaphragm is accommodated in the front cavity, and when the vibrating diaphragm vibrates to generate sound, airflow formed by air in the front cavity is exchanged with the outside through the sound outlet; first ring portion of folding is for being the rectangle structure and following the vibration direction of vibrating diaphragm is to keeping away from the sunken arc structure that forms of back chamber direction, first ring portion of folding include with the sound outlet adjacent first limit, with first relative second limit on one side and connect respectively first limit with two third edges on the second limit, first limit is located sound outlet just right part to the sunken first groove of dodging that forms of back chamber direction makes flow through during the vibrating diaphragm vibration the velocity of flow of the air current of sound outlet reduces.

Preferably, the part of the second edge, which is located right opposite to the sound outlet, is recessed towards the rear cavity to form a second avoidance groove.

Preferably, the first edge and the second edge have the same shape.

Preferably, the first edge includes a first section facing the sound outlet, two second sections extending from opposite ends of the first section in a direction away from the rear cavity, and two third sections extending from the second sections in a direction away from the first section, the two third sections are respectively connected to one of the adjacent third edges, the first section is a bottom surface of the first avoiding groove, and the second section is a side surface of the first avoiding groove; the second limit include with the just right fourth section of sound outlet, by the relative both ends of fourth section are to keeping away from two fifth sections that the direction of back chamber was buckled and is extended and by the second section is to keeping away from two sixth sections that the direction of fourth section was buckled and is extended, two the sixth section respectively with adjacent one separately the third edge is connected, the fourth section does the second dodges the bottom surface in groove, the fifth section does the second dodges the side in groove.

Preferably, along the vibration direction of the diaphragm, the height of the first section and the height of the shell on one side of the back cavity are smaller than the height of the third section and the height of the shell on one side of the back cavity; along the vibration direction of vibrating diaphragm, the fourth section with the casing is located the height of back chamber one side is less than the sixth section with the casing is located the height of back chamber one side.

Preferably, the thickness of the first side, the thickness of the second side, and the thickness of the third side are the same along the vibration direction of the diaphragm.

Preferably, the surface of the first hinge part located in the front cavity is recessed towards the direction of the rear cavity to form a plurality of guide grooves, and the extending direction of the guide grooves is the same as the flowing direction of the airflow.

Preferably, the sound production monomer includes the basin frame, is fixed in respectively the vibration system and the drive of basin frame the magnetic circuit of vibration system vibration sound production, vibration system includes the vibrating diaphragm, the vibrating diaphragm is cyclic annular and encircles the magnetic circuit sets up, the periphery side of vibrating diaphragm is fixed in the basin frame, the interior periphery side of vibrating diaphragm is fixed in magnetic circuit.

Preferably, the diaphragm includes the first flange portion, a second flange portion surrounding the first flange portion and spaced from each other, a first vibrating portion extending from the first flange portion to the second flange portion in a bending manner, a second vibrating portion extending from the second flange portion to the first flange portion in a bending manner, a first fixing portion extending from an outer peripheral side of the first flange portion in a bending manner, a second fixing portion extending from an inner peripheral side of the second flange portion in a bending manner, and a dome portion covering the first vibrating portion and the second vibrating portion, respectively, the first fixing portion is fixed to the frame, and the second fixing portion is fixed to the magnetic circuit system; the first vibrating portion is connected to the second vibrating portion.

Preferably, the housing includes an upper cover and a lower cover covering the upper cover and enclosing the upper cover together to form the receiving space, the upper cover includes an upper cover plate arranged at an interval with the diaphragm and an upper cover sidewall extending from a periphery of the upper cover plate in a bent manner, the sound outlet is located on the upper cover sidewall, and the sound generating unit and the upper cover enclose together to form the front cavity; the lower cover comprises a lower cover plate arranged opposite to the upper cover plate and a lower cover side wall bent and extended from the periphery of the lower cover plate and abutted against the upper cover side wall, and the sounding unit and the lower cover jointly enclose a rear cavity; the basin frame is fixed on the side wall of the upper cover and the side wall of the lower cover respectively so as to suspend the sounding single body in the accommodating space.

Compared with the prior art, the utility model discloses a through being annular first ring portion of folding of vibrating diaphragm in the speaker box sets up to being the rectangle structure to specifically divide first ring portion into with the first edge that the phonate mouthful is adjacent, with first relative second limit and connect first edge and two third edges on second limit respectively, and with first edge position phonate mouthful just right part to the sunken first groove of dodging that forms of backspace direction, so that the velocity of flow of the air current of the phonate mouth of flowing through when making the vibrating diaphragm vibration reduces. The structure is characterized in that the first avoiding groove is formed by the first edge in a concave mode, so that the volume of an airflow channel from air in the front cavity to the sound outlet is increased, the flow speed of airflow flowing through the sound outlet is reduced, noise of sound squeaking is not easy to form, airflow noise of the loudspeaker box is small, and the acoustic performance of the loudspeaker box is excellent.

[ 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 the present invention;

fig. 2 is an exploded schematic view of a part of the three-dimensional structure of the speaker box of the present invention;

FIG. 3 is a sectional view taken along line A-A of FIG. 1;

fig. 4 is a schematic three-dimensional structure diagram of the sound-producing unit of the speaker box of the present invention;

fig. 5 is an exploded view of a part of the three-dimensional structure of the sound generating unit of the speaker box of the present invention;

fig. 6 is a schematic perspective view of the first folding ring portion of the speaker box according to 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. 1-6, the present invention provides a speaker box 100. The speaker box 100 includes a housing 1 having an accommodating space 10 and a sound generating unit 2 accommodated in the accommodating space 10.

The housing 1 may be an integral structure or a separate structure. In the present embodiment, the housing 1 has a separate structure. Specifically, the housing 1 includes an upper cover 11, a lower cover 12 covering the upper cover 11 and enclosing the accommodating space 10 together with the upper cover 11, and a sound outlet 110 penetrating through the lower cover.

The upper cover 11 includes an upper cover plate 111 spaced apart from the diaphragm 3 and an upper cover sidewall 112 extending from a periphery of the upper cover plate 111.

The lower cover 12 includes a lower cover 121 disposed opposite to the upper cover 111, and a lower cover sidewall 122 extending from a periphery of the lower cover 121 and abutting against the upper cover sidewall 112.

The housing 1 is provided with a sound outlet 110 therethrough. Specifically, the sound outlet 110 is located on the side wall 112 of the upper cover, and this structure enables the speaker box 100 to form a side sound emitting structure.

The sounding unit 2 is fixed on the shell 1. In the present embodiment, the sound generating unit 2 is fixed to the upper cover sidewall 112 and the lower cover sidewall 122.

The sound generating unit 2 divides the accommodating space 10 into a front cavity 5 and a rear cavity 6.

The sound generating unit 2 and the upper cover 11 jointly enclose the front cavity 5, and the sound outlet 110 communicates the front cavity 5 with the outside and forms a side sound generating structure. The front volume 6 improves the acoustic performance, particularly the high frequency acoustic performance, of the loudspeaker enclosure 100.

The sound generating unit 2 and the lower cover 12 jointly enclose the rear cavity 6. The rear chamber 6 face improves the acoustic performance of the loudspeaker enclosure 100, in particular the low frequency acoustic performance.

In the present embodiment, the sounding unit 2 includes a frame 21, a vibration system 22 fixed to the frame 21, and a magnetic circuit system 23 having a magnetic gap 230 for driving the vibration system 22 to vibrate and generate sound. The magnetic circuit system 23.

The frame 21 is fixed to the upper cover side wall 112 and the lower cover side wall 122 respectively to suspend the sound generating unit 2 in the accommodating space 10.

The vibration system 22 includes a voice coil 221 and a diaphragm 3.

The voice coil 221 is inserted into the magnetic gap 230 to drive the diaphragm 3 to vibrate and generate sound.

The vibrating diaphragm 3 is used for vibrating and sounding. The vibrating diaphragm 3 is accommodated in the front cavity 5, and when the vibrating diaphragm 3 vibrates and produces sound, air flow formed by air in the front cavity 5 is exchanged with the outside through the sound outlet 110.

The diaphragm 3 is annular and arranged around the magnetic circuit system 23. Specifically, the diaphragm 3 includes a first flange portion 4, a second flange portion 31 which is annular and surrounds the first flange portion 4 and is spaced from each other, a first vibration portion 32 which is bent and extended from the first flange portion 4 to the second flange portion 31, a second vibration portion 33 which is bent and extended from the second flange portion 31 to the first flange portion 4, a first fixing portion 34 which is bent and extended from the outer peripheral side of the first flange portion 4, a second fixing portion 35 which is bent and extended from the inner peripheral side of the second flange portion 31, and a spherical top portion 36 which covers the first vibration portion 32 and the second vibration portion 33 respectively.

The outer peripheral side of the diaphragm 3 is fixed to the frame 21. Specifically, the first fixing portion 34 is fixed to the frame 21.

The inner peripheral side of the diaphragm 3 is fixed to the magnetic circuit system 23. Specifically, the second fixing portion 35 is fixed to the magnetic circuit system 23.

In the present embodiment, the first vibration part 32 is connected to the second vibration part 33. This structure allows the first vibration part 32, the second vibration part 33, and the ball top 36 to form an integrated structure, so that the acoustic performance of the vibration sound of the diaphragm 21 is good, and delamination caused by vibration can be prevented.

The first ring folding part 4 is in an arc structure formed by sinking towards the direction far away from the rear cavity 6 along the vibration direction of the vibrating diaphragm 3. This structure makes the inside sound chamber of sound production monomer 2 is bulky, inside part need not consider with first dog-ear portion 4 dodges, is favorable to the overall arrangement and the equipment of sound production monomer 2.

The first folding ring part 4 is a rectangular structure. Specifically, the first hinge portion 4 includes a first side 41 adjacent to the sound outlet 110, a second side 42 opposite to the first side 41, and two third sides 43 respectively connecting the first side 41 and the second side 42.

In this embodiment, the thickness of the first side 41, the thickness of the second side 42, and the thickness of the third side 43 are the same in the vibration direction of the diaphragm 3. This configuration facilitates the manufacture and installation of the first collar portion 4.

Specifically, the first side 41 includes a first section 411 opposite to the sound outlet 110, two second sections 412 extending from opposite ends of the first section 411 in a direction away from the rear cavity 6, and two third sections 413 extending from the second sections 412 in a direction away from the first section 411. Wherein two third segments 413 are respectively connected to one third edge 43 adjacent to each other.

The portion of the first edge 41 opposite to the sound outlet 110 is recessed toward the rear cavity 6 to form a first avoiding groove 410. The first section 411 is a bottom surface of the first avoidance groove 410. The second section 412 is a side surface of the first avoidance groove 410. Specifically, along the vibration direction of the diaphragm 3, the height of the first section 411 and the height of the housing 1 on the side of the back cavity 6 are smaller than the height of the third section 413 and the height of the housing 1 on the side of the back cavity 6. That is, this structure increases the height between the first segment 411 and the upper cover plate 111, so that the volume of the airflow path from the air in the front cavity 5 to the sound outlet 110 increases, and the structure of the first avoiding groove 410 reduces the flow rate of the airflow passing through the sound outlet 110 when the diaphragm 3 vibrates, i.e., the flow rate of the airflow passing through the sound outlet 110 is reduced, so that the noise of sound whistling is not easily generated, and thus the airflow of the speaker box 100 is made to be small in noise, and the acoustic performance of the speaker box 100 is excellent.

In the present embodiment, in order to better enable the airflow formed by the first hinge portion 4 in the front cavity 5 to smoothly flow and exchange with the outside through the sound outlet 110, the first edge 41 and the second edge 42 have the same shape.

Specifically, the second side 42 includes a fourth segment 421 facing the sound outlet 110, two fifth segments 422 extending from two opposite ends of the fourth segment 421 in a direction away from the rear cavity 6, and two sixth segments 423 extending from the second segment 412 in a direction away from the fourth segment 421. Two of the sixth segments 423 are respectively connected to one of the third sides 43 adjacent to each other.

The portion of the second edge 42 opposite to the sound outlet 110 is recessed toward the rear cavity 6 to form the second avoiding groove 420. The fourth segment 421 is a bottom surface of the second avoidance groove 420. The fifth section 422 is a side surface of the second avoidance groove 420. Specifically, along the vibration direction of the diaphragm 3, the height of the fourth section 421 and the height of the housing 1 on the side of the back cavity 6 are smaller than the height of the sixth section 423 and the height of the housing 1 on the side of the back cavity 6. That is, this structure increases the height between the fourth segment 421 and the upper cover 111, and the design of the second avoiding groove 420 is beneficial to the airflow flowing in the front cavity 5, so as to prevent the airflow from being inconsistent due to the bounce of the second edge 42 in the flowing direction of the airflow, and thus causing noise, especially noise of sound whistling is not easily generated, so that the airflow noise of the speaker box 100 is small, and the acoustic performance of the speaker box 100 is excellent.

In the present embodiment, the first edge 41 and the second edge 42 are respectively disposed on two opposite sides of the long axis of the first hinge portion 4, and the two third edges 43 are respectively disposed on two opposite sides of the short axis of the first hinge portion 4. This arrangement is advantageous in increasing the length of the first avoidance groove 410 and the length of the second avoidance groove 420, thereby making the air flow smoother, making and making the speaker box 100 excellent in acoustic performance. Of course, according to actual design requirements, the first edge 41 and the second edge 42 are respectively disposed on two opposite sides of the short axis of the first annular folding portion 4, so that the airflow can flow more smoothly.

In this embodiment, the second section 412 and the fifth section 422 are each configured as a balanced curved surface having a radian, which facilitates the manufacture of the first hinge part 4 and enables the airflow to smoothly flow, thereby improving the acoustic performance of the speaker box 100.

In order to better enable the airflow formed by the first hinge part 4 in the front cavity 5 to smoothly exchange with the outside through the sound outlet 110. In the present embodiment, the surface of the first hinge part 4 located in the front cavity 5 is recessed in the direction of the rear cavity 6 to form a plurality of guide grooves 40. The guide groove 40 extends in the same direction as the flow direction of the air current. This structure makes the surface of the first hinge part 4 very suitable for flowing gas under the condition of ensuring the performance of sound production, the generated gas flow noise is small, and the gas flow can be smooth, so that the acoustic performance of the speaker box 100 is good.

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. A loudspeaker box comprises a shell with an accommodating space and a sounding single body accommodated in the accommodating space; the shell is provided with a sound outlet penetrating through the shell, the sound generating monomer comprises a vibrating diaphragm with an annular first folding ring part, the sound generating monomer divides the accommodating space into a front cavity and a rear cavity, the front cavity is communicated with the outside through the sound outlet to form a side sound generating structure, the vibrating diaphragm is accommodated in the front cavity, and when the vibrating diaphragm vibrates to generate sound, airflow formed by air in the front cavity is exchanged with the outside through the sound outlet; its characterized in that, first ring portion of folding is for being the rectangle structure and following the vibration direction of vibrating diaphragm is to keeping away from the sunken arc structure that forms in back chamber direction, first ring portion of folding include with the first limit that the sound outlet is adjacent, with first relative second limit in limit and connect respectively first limit with two third of second limit, first limit is located the just right part of sound outlet to the sunken first groove of dodging that forms in back chamber direction makes flow through during the vibrating diaphragm vibration the velocity of flow of the air current of sound outlet reduces.

2. A loudspeaker enclosure according to claim 1, wherein the portion of the second edge opposite to the sound outlet is recessed in the direction of the rear cavity to form a second avoiding groove.

3. A loudspeaker enclosure as claimed in claim 2, wherein the first edge is substantially identical to the second edge.

4. The speaker box according to claim 2, wherein the first edge includes a first section opposite to the sound outlet, two second sections extending from opposite ends of the first section in a direction away from the rear cavity, and two third sections extending from the second sections in a direction away from the first section, the two third sections being respectively connected to one of the third edges adjacent to each other, the first section being a bottom surface of the first avoiding groove, and the second section being a side surface of the first avoiding groove; the second limit include with the just right fourth section of sound outlet, by the relative both ends of fourth section are to keeping away from two fifth sections that the direction of back chamber was buckled and is extended and by the second section is to keeping away from two sixth sections that the direction of fourth section was buckled and is extended, two the sixth section respectively with adjacent one separately the third edge is connected, the fourth section does the second dodges the bottom surface in groove, the fifth section does the second dodges the side in groove.

5. The speaker box as claimed in claim 4, wherein the height of the first section from the housing on the side of the back cavity is smaller than the height of the third section from the housing on the side of the back cavity in the vibration direction of the diaphragm; along the vibration direction of vibrating diaphragm, the fourth section with the casing is located the height of back chamber one side is less than the sixth section with the casing is located the height of back chamber one side.

6. A loudspeaker enclosure as claimed in claim 2, characterized in that the thickness of the first side, the thickness of the second side and the thickness of the third side are the same in the direction of vibration of the diaphragm.

7. The speaker box of claim 1, wherein the surface of the first hinge part located in the front cavity is recessed in the direction of the rear cavity to form a plurality of guide grooves, and the guide grooves extend in the same direction as the flow direction of the airflow.

8. The loudspeaker box of claim 1, wherein the sound generating unit comprises a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to generate sound, the vibration system comprises the diaphragm, the diaphragm is annular and disposed around the magnetic circuit system, an outer peripheral side of the diaphragm is fixed to the frame, and an inner peripheral side of the diaphragm is fixed to the magnetic circuit system.

9. The speaker box according to claim 8, wherein the diaphragm includes the first flange portion, a second flange portion that is annular and surrounds the first flange portion and is spaced apart from each other, a first vibrating portion that is bent and extended from the first flange portion to the second flange portion, a second vibrating portion that is bent and extended from the second flange portion to the first flange portion, a first fixing portion that is bent and extended from an outer peripheral side of the first flange portion, a second fixing portion that is bent and extended from an inner peripheral side of the second flange portion, and a dome portion that covers the first vibrating portion and the second vibrating portion, respectively, the first fixing portion being fixed to the frame, and the second fixing portion being fixed to the magnetic circuit system; the first vibrating portion is connected to the second vibrating portion.

10. The speaker box of claim 8, wherein the housing includes an upper cover and a lower cover covering the upper cover and enclosing the receiving space together with the upper cover, the upper cover includes an upper cover spaced apart from the diaphragm and an upper cover sidewall extending from a periphery of the upper cover, the sound outlet is located on the upper cover sidewall, and the sound generating unit and the upper cover enclose the front cavity together; the lower cover comprises a lower cover plate arranged opposite to the upper cover plate and a lower cover side wall bent and extended from the periphery of the lower cover plate and abutted against the upper cover side wall, and the sounding unit and the lower cover jointly enclose a rear cavity; the basin frame is fixed on the side wall of the upper cover and the side wall of the lower cover respectively so as to suspend the sounding single body in the accommodating space.