CN209964290U

CN209964290U - Loudspeaker box

Info

Publication number: CN209964290U
Application number: CN201920554244.2U
Authority: CN
Inventors: 沈凯华; 吴军
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-04-22
Filing date: 2019-04-22
Publication date: 2020-01-17
Anticipated expiration: 2029-04-22

Abstract

The utility model provides a loudspeaker box, which comprises a shell with an accommodating space and a sounding monomer accommodated in the accommodating space; the sounding monomer comprises a basin frame, a vibrating diaphragm and a magnetic circuit system which are respectively fixed on the basin frame, and at least two baffle walls which are convexly extended from the inside of the shell, wherein the magnetic circuit system and the basin frame jointly form a leakage opening which is used for the side surface leakage of the sounding monomer; the sound-producing unit divides the accommodating space into a front cavity and a rear cavity, and the front cavity is used for producing sound; the basin frame, the vibrating diaphragm and the magnetic circuit system jointly enclose an acoustic cavity, and the acoustic cavity is communicated with the rear cavity through a leakage port; the leakage ports comprise a first leakage port and two second leakage ports positioned at two opposite ends of the first leakage port; each blocking wall is abutted against the sounding single body and covers and shields the corresponding second leakage port. Compared with the prior art, the utility model discloses a speaker box reliability is high and acoustic performance is excellent.

Description

Loudspeaker box

[ technical field ] A method for producing a semiconductor device

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

[ 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 box for playing sound is widely applied to the current smart mobile devices.

Related art the speaker box including have accommodating space the casing, accept in sound production monomer in the casing and form in leading in the acoustic channel in the accommodating space, sound production monomer is including the vibrating diaphragm that is used for the vibration sound production, the vibrating diaphragm will accommodating space separates into preceding sound chamber and back cavity, leading the acoustic channel will preceding sound chamber with external intercommunication and with preceding sound chamber constitutes jointly the antechamber.

However, in the speaker box of the related art, the sound generating unit adopts a large leakage design, that is, the leakage design of the sound generating unit is on the side of the frame, when the speaker box is directly installed in the accommodating space, the structure matched with the large leakage design is not arranged in the shell, so that the sound generating unit is integrally leaked to a large extent, the distortion of the speaker box is caused, and even the noise is generated due to the overlarge amplitude of the speaker box.

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 the reliability is high 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 sound generating unit comprises a basin frame, a vibrating diaphragm and a magnetic circuit system which are respectively fixed on the basin frame, and at least two baffle walls which are convexly extended from the inside of the shell, wherein a leakage hole which is formed by the magnetic circuit system and the basin frame and is used for the side surface leakage of the sound generating unit is formed in a surrounding mode, the sound generating unit divides the accommodating space into a front cavity and a rear cavity, and the front cavity is used for generating sound; the basin frame, the vibrating diaphragm and the magnetic circuit system jointly enclose an acoustic cavity, and the acoustic cavity is communicated with the rear cavity through the leakage port; the leakage ports comprise a first leakage port and two second leakage ports positioned at two opposite ends of the first leakage port; each baffle wall is abutted against the sounding single body and covers and shields the corresponding second leakage port, and leakage is carried out through the first leakage port.

Preferably, the housing comprises an upper cover and a lower cover which is covered on the upper cover and jointly encloses the accommodating space; the vibrating diaphragm and the upper cover are opposite at intervals to form the front cavity, the vibrating diaphragm, the lower cover and the upper cover jointly form the rear cavity, and the blocking wall is formed by the lower cover protruding towards the upper cover in an extending mode.

Preferably, the frame comprises a frame body and a fixed wall extending from the frame body to a direction far away from the vibrating diaphragm, and the vibrating diaphragm is fixed on one side of the frame body far away from the fixed wall; the magnetic circuit system comprises a magnetic yoke fixed on the fixed wall; the magnet yoke with basin frame body interval sets up and encloses jointly the leakage mouth, be located two with one side the retaining wall interval set up in the relative both sides of first leakage mouth, each the retaining wall with correspond the second leakage mouth is just to setting up.

Preferably, the yoke is the rectangle, let out leakage mouth and include two, two first let out leakage mouth and be located respectively the relative both sides of minor axis of yoke, keep off the wall and include four and be located respectively the position at four angles of yoke, four leakage mouth of second is located respectively the position at four angles of yoke.

Preferably, the lower cover includes a through opening penetrating therethrough, and the yoke is fixed to the lower cover and completely covers the through opening.

Preferably, the yoke is chamfered at four corners thereof to form chamfered portions, the lower cover further includes four extending pieces formed by extending from the inside of the through opening at positions corresponding to the four chamfered portions, and the four extending pieces respectively abut against the four chamfered portions; the four retaining walls are formed by bending and extending the four extending blocks respectively, and each retaining wall abuts against the corresponding edge cutting part.

Compared with the prior art, the utility model discloses a in the loudspeaker box, the leakage mouth of sound production monomer formation in its side, the leakage mouth includes first leakage mouth and is located two second leakage mouths at the relative both ends of first leakage mouth, keep off the wall butt in sound production monomer covers and shelters from the second leakage mouth. Above-mentioned structure, through keep off the setting of wall, cover and shelter from the second leaks the mouth, is about to the partial leakage space of leaking the mouth shelters from, only passes through first leaks the mouth and leaks away, has avoided the too big condition in leakage space, ensures effectively the free normal leakage amount of leaking of sound production, the free application of sound production of having realized big leakage structure is in the distortion is little when in the speaker box, has avoided the noise to produce, thereby has improved the reliability and the acoustic performance of speaker box.

[ 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 view of a part of a three-dimensional structure of the speaker box of the present invention;

fig. 3 is a partial exploded view of the speaker box of the present invention;

fig. 4 is an assembly view of a part of the structure of the speaker box of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 6 is an enlarged view of a portion B shown in fig. 5.

[ 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, which includes a housing 1, a sound generating unit 2 and a baffle wall 3.

The housing 1 has a receiving space 10. The housing 1 may be an integral structure or a separate structure. In the present embodiment, the housing 1 is a split structure, and specifically, the housing 1 includes an upper cover 11 and a lower cover 12 covering the upper cover 11 and enclosing the accommodating space 10 together.

The sounding unit 2 comprises a basin frame 21, a vibration system 22 and a magnetic circuit system 23, wherein the vibration system 22 and the magnetic circuit system 23 are respectively fixed on the basin frame 21, the magnetic circuit system 23 and the basin frame 21 jointly enclose and are used for a leakage opening 24 which is leaked from the side surface of the sounding unit 2, and the magnetic circuit system 23 is used for providing magnetic field driving to the vibration system 22 to vibrate and sound.

The frame 21 comprises a frame body 211 and a fixed wall 212 extending from the frame body 211 in a direction away from the vibration system 22.

The vibration system 22 includes a diaphragm 221 fixed to the frame 21 and a voice coil 222 for driving the diaphragm 221 to vibrate and generate sound. The sound generating unit 2 divides the accommodating space 10 into a front cavity 101 and a rear cavity 102, and the front cavity 101 is used for generating sound.

Specifically, the vibrating diaphragm 221 is fixed to a side of the frame body 211 away from the fixed wall 212. The sound generating unit 2 and the upper cover 11 are opposite at intervals to form the front cavity 101, and the sound generating unit 2, the lower cover 12 and the upper cover 11 together form the rear cavity 102; the frame 21, the diaphragm 221 and the magnetic circuit system 23 together enclose an acoustic cavity 20, and the leak port 24 connects the acoustic cavity 20 with the back cavity 102.

The magnetic circuit system 23 includes a magnetic yoke 231 fixed to the frame 21 and a magnetic steel 232 fixed to the magnetic yoke 231 and accommodated in the acoustic cavity 20. Specifically, the yoke 231 is fixed to a side of the fixed wall 212 away from the diaphragm 221.

Preferably, the lower cover 12 is provided with a through opening 120 therethrough. The yoke 231 is fixed to the lower cover 12 and completely covers the through hole 120 to form an exposed structure of the yoke 231, which is beneficial to heat dissipation of the speaker box 100 and reliability improvement, and is beneficial to making the magnetic circuit system 23 larger under the same volume, improving driving force and improving acoustic performance.

Preferably, the yoke 231 is rectangular, and may be rectangular with right angles, rectangular with rounded corners, or rectangular with chamfered portions at four corners, for example, in the present embodiment, the chamfered portions 2311 are formed by chamfering the four corners of the yoke 231, the lower cover 12 further includes four extending pieces 121 formed by protruding and extending from the inner side of the through opening 120 at positions corresponding to the four chamfered portions 2311, and the four extending pieces 121 respectively abut against the four chamfered portions 2311.

Leakage opening 24 by yoke 231 with basin frame body 211 interval sets up and encloses jointly, leakage opening 24 includes first leakage opening 241 and is located two second leakage openings 242 at the relative both ends of first leakage opening 241, two leakage opening 242 is respectively the position of two adjacent angles of yoke 231.

In this embodiment, the blocking walls 3 include at least two walls, and are respectively formed by protruding and extending from the inside of the housing 1, specifically, each blocking wall 3 is formed by protruding and extending from the lower cover 12 to the upper cover 11; each of the blocking walls 3 abuts against the sound generating unit 2 and covers and shields the corresponding second leakage port 242, and the leakage is caused through the first leakage port 241, thereby forming a leakage structure.

Further, the two blocking walls 3 located on the same side are disposed at intervals on two opposite sides of the first leakage port 241, and each blocking wall 3 is disposed opposite to the corresponding second leakage port 242 and completely covers the second leakage port 242.

In the above structure, the blocking wall 3 covers and blocks the second leakage port 242, that is, a part of the leakage space of the leakage port 24 is blocked, and only the leakage is leaked through the first leakage port 241, so as to avoid the situation of an excessively large leakage space, in practical application, the leakage space of the first leakage port 241 can be adjusted by adjusting the size or the position of the blocking wall 3 according to the design requirement, thereby effectively ensuring the normal leakage amount of the sound generating unit 2, and realizing that the sound generating unit 2 with a large leakage structure has small distortion when being used in the speaker box 100; while ensuring that the vibration amplitude is normal and avoiding the generation of noise, thereby improving the reliability and acoustic performance of the speaker box 100.

It should be noted that the number of the leakage ports 24 is not limited, and it can be specifically set according to the actual design requirement, for example, in the present embodiment, taking the rectangular yoke 231 as an example for expansion, the leakage ports 24 include two, two of the first leakage ports 241 are on two opposite sides of the short axis of the yoke 231, and four of the second leakage ports 242 are respectively located at four corners of the yoke 231.

The number of the blocking walls 3 is matched with the number of the second leakage ports 242, so that the blocking walls 3 at least include two, each of the blocking walls 3 is located at one corner of the magnetic yoke 231, and in the present embodiment, the two leakage ports 24 include four second leakage ports 242, so that the blocking walls 3 include four and are respectively located at four corners of the magnetic yoke 231.

Furthermore, the four blocking walls 3 are formed by bending and extending the four extending blocks 121, the shape of the blocking wall 3 matches the shape of the cut-out portion 2311 of the magnetic yoke 231, and each blocking wall 3 abuts against the corresponding cut-out portion 2311, which can facilitate the positioning of the sound generating unit 2 when the speaker 100 is assembled.

Of course, the shape of the blocking wall 3 is not limited, and it may be a blocking wall with a right angle structure, or a blocking wall with a round angle structure; the positional relationship between the blocking wall 3 and the chamfered portion 2311 is also not limited, and it is also possible that the blocking wall is disposed opposite to the chamfered portion and at a distance from the yoke as long as the blocking wall can cover and block the second leak port.

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 sound generating unit comprises a basin frame, a vibrating diaphragm and a magnetic circuit system, wherein the vibrating diaphragm and the magnetic circuit system are respectively fixed on the basin frame, the magnetic circuit system and the basin frame jointly form a leakage opening which is used for leakage of the side face of the sound generating unit, the sound generating unit divides the accommodating space into a front cavity and a rear cavity, and the front cavity is used for generating sound; the basin frame the vibrating diaphragm and magnetic circuit encloses into the vocal chamber jointly, the leakage opening will the vocal chamber with back chamber intercommunication, a serial communication port, the leakage opening includes first leakage opening and is located two second leakage openings at the relative both ends of first leakage opening, the speaker box still include respectively by two at least fender walls that extend of the inside protrusion of casing, each keep off the wall butt in the sound production monomer will correspond the second leakage opening covers and shelters from.

2. The loudspeaker enclosure according to claim 1, wherein the housing comprises an upper cover, a lower cover covering the upper cover and enclosing the accommodating space together; the vibrating diaphragm and the upper cover are opposite at intervals to form the front cavity, the vibrating diaphragm, the lower cover and the upper cover jointly form the rear cavity, and the blocking wall is formed by the lower cover protruding towards the upper cover in an extending mode.

3. The loudspeaker box of claim 2, wherein the frame comprises a frame body and a fixed wall extending from the frame body in a direction away from the diaphragm, and the diaphragm is fixed on one side of the frame body away from the fixed wall; the magnetic circuit system comprises a magnetic yoke fixed on the fixed wall; the magnet yoke with basin frame body interval sets up and encloses jointly the leakage mouth, be located two with one side the retaining wall interval set up in the relative both sides of first leakage mouth, each the retaining wall with correspond the second leakage mouth is just to setting up.

4. The speaker cabinet as claimed in claim 3, wherein the magnetic yoke has a rectangular shape, the leakage ports include two leakage ports, two of the first leakage ports are respectively located at two opposite sides of the short axis of the magnetic yoke, the blocking wall includes four leakage ports and is respectively located at four corners of the magnetic yoke, and four of the second leakage ports are respectively located at four corners of the magnetic yoke.

5. A loudspeaker enclosure according to claim 4, wherein the lower cover includes a through-opening therethrough, the yoke being secured to the lower cover and completely covering the through-opening.

6. The speaker cabinet according to claim 5, wherein the yoke is chamfered at four corners thereof to form chamfered portions, and the lower cover further includes four extending pieces formed by projecting and extending from the inside of the through opening at positions corresponding to the four chamfered portions, the four extending pieces abutting against the four chamfered portions, respectively; the four retaining walls are formed by bending and extending the four extending blocks respectively, and each retaining wall abuts against the corresponding edge cutting part.