CN210168201U

CN210168201U - Loudspeaker box

Info

Publication number: CN210168201U
Application number: CN201920543594.9U
Authority: CN
Inventors: 裴笑竹; 施胜荣; 王延隆
Original assignee: AAC Technologies Pte Ltd
Current assignee: AAC Technologies Pte Ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-03-20
Anticipated expiration: 2029-04-18

Abstract

The utility model provides a loudspeaker box, which comprises a shell with an accommodating space, a sounding unit group accommodated in the accommodating space and a sounding hole arranged through the shell; the sounding unit group comprises two sounding units which are respectively fixed on the shell, each sounding unit comprises a basin frame fixed on the shell, and a vibrating diaphragm and a magnetic yoke which are respectively fixed on two opposite sides of the basin frame, the magnetic yoke sides of the two sounding units are oppositely arranged, and the vibrating diaphragm sides of the two sounding units are reversely arranged; one of the sound generating units and the shell jointly enclose a first front cavity, the other sound generating unit and the shell jointly enclose a second front cavity, and the two sound generating units and the shell jointly enclose a rear cavity; the first front cavity and the second front cavity are respectively communicated with the sound outlet. Compared with the prior art, the utility model discloses a loudspeaker box sound loudness is better.

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 case include the casing, accept in sound production monomer in the casing and run through the phonation hole that the casing set up, sound production monomer will antechamber and back chamber are separated into to the casing, the antechamber with phonation hole intercommunication.

However, in the speaker box of the related art, only one sound generating unit is disposed in the housing, and the sound loudness of the generated sound is limited, especially in noisy occasions, the sound loudness of the speaker box is not enough, and even in some occasions with special requirements, the requirement of people on the sound loudness cannot be met.

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 sound loudness is better.

In order to achieve the above object, the present invention provides a speaker box, which comprises a housing having an accommodating space, a sound generating unit group accommodated in the accommodating space, and a sound outlet hole formed through the housing; the sounding unit group comprises two sounding units which are respectively fixed on the shell, each sounding unit comprises a basin frame fixed on the shell, and a vibrating diaphragm and a magnetic yoke which are respectively fixed on two opposite sides of the basin frame, the magnetic yoke sides of the two sounding units are oppositely arranged, and the vibrating diaphragm sides of the two sounding units are reversely arranged; one of the sound generating units and the shell jointly enclose a first front cavity, the other sound generating unit and the shell jointly enclose a second front cavity, and the two sound generating units and the shell jointly enclose a rear cavity; the first front cavity and the second front cavity are respectively communicated with the sound outlet.

Preferably, the two sounding single bodies are arranged in a relative staggered mode.

Preferably, the two sounding monomers are arranged oppositely.

Preferably, the housing includes an upper cover, a lower cover opposite to the upper cover and disposed at an interval, an upper cover sidewall extending from the upper cover to the lower cover direction, and a lower cover sidewall extending from the lower cover to the upper cover direction and abutting against the upper cover sidewall, and the upper cover, the upper cover sidewall, the lower cover sidewall, and the lower cover together enclose the accommodating space; one of them in the sound production unit group sound production monomer be fixed in the upper cover and with the upper cover encloses jointly into first antechamber, another sound production monomer is fixed in the lower cover and with the lower cover interval encloses into the second antechamber, two sound production monomer the upper cover lateral wall the lower cover lateral wall reaches the lower cover encloses jointly into the back chamber.

Preferably, the phonate hole including run through set up in the first phonate hole of upper cover lateral wall with run through set up in the second phonate hole of lower cover, first phonate hole will first ante-chamber and external intercommunication and formation side sound production structure, the second phonate hole will the second ante-chamber communicates with the external world and forms positive sound production structure.

Preferably, the phonate hole including run through set up in the first phonate hole of upper cover with run through set up in the second phonate hole of lower cover, first phonate hole will first ante-chamber and external intercommunication and formation positive sound production structure, the second phonate hole will the chamber communicates and forms positive sound production structure with external before the second.

Preferably, the sound hole including run through set up in the first sound hole of upper cover lateral wall with run through set up in the second sound hole of lower cover lateral wall, first sound hole will first ante-chamber communicates with the external world and forms side sound production structure, the second sound hole will the second ante-chamber communicates with the external world and forms side sound production structure.

Preferably, the speaker box further comprises two magnetic isolation plates respectively attached to the two magnetic yokes of the two sound generating units, a steel plate clamped between the two magnetic isolation plates, and a steel sheet fixed to the upper cover and exposed out of the upper cover; the steel plate is connected with the steel sheet.

Preferably, the steel plate comprises fixing plates, extending walls and connecting walls, wherein the fixing plates are fixed to the two magnetic isolation plates at two opposite sides respectively, the extending walls are bent and extended from the fixing plates to the direction close to the steel sheet, and the connecting walls are bent, extended and fixed to the steel sheet.

Preferably, its characterized in that, the sound production unit group includes at least two sets ofly, the sound outlet includes at least two and respectively with two sets of the sound production unit group first antechamber with the second antechamber intercommunication.

Preferably, the casing is rectangular, and the two groups of sounding unit groups are symmetrically arranged along the long axis direction of the casing.

Compared with the prior art, the utility model discloses a loudspeaker box sets up an at least set of sound production unit group in the casing, and every sound production unit group of group includes two sound production monomers, and two the free yoke side of sound production sets up relatively, two the free vibrating diaphragm side of sound production is reverse to be set up, constitutes back to back sound production structure, and this structure is effectual on the one hand has increased acoustic performance such as the sound production loudness (volume promptly) of loudspeaker box, and the department promotes about 12dB at 2000 Hz.

[ 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 cross-sectional view taken along line A-A of FIG. 1;

fig. 4 is the utility model discloses the frequency response performance of speaker box compares the curve chart.

[ 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. 1-3, the present invention provides a speaker box 100, which includes a housing 1, a sound generating unit group 2, a sound hole 3 penetrating the housing 1, a magnetic shield 4, a steel plate 5 and a steel sheet 6.

The housing 1 has a receiving space 10. The housing 1 may be an integral structure or a separate structure, for example, in the present embodiment, the housing 1 is a separate structure including an upper cover 11, a lower cover 12 provided opposite to and spaced apart from the upper cover 11, an upper cover sidewall 13 extending from the upper cover 11 in the direction of the lower cover 12, and a lower cover sidewall 14 extending from the lower cover 12 in the direction of the upper cover 11 and abutting against the upper cover sidewall 13; the upper cover 11, the upper cover side wall 13, the lower cover side wall 14 and the lower cover 12 together enclose the accommodating space 10. The upper cover 11 and the lower cover 12 are located on the front surface of the housing 1, and the upper cover side wall 13 and the lower cover side wall 14 are located on the side surface of the housing 1.

The sounding unit group 2 is accommodated in the accommodating space 10. The sounding unit group 2 can be one group, two groups or multiple groups.

Each group of the sounding unit group 2 comprises two sounding units 21 respectively fixed on the shell 1; each of the sound generating units 21 includes a frame 211 fixed to the housing 1, and a diaphragm 212 and a yoke 213 fixed to opposite sides of the frame 211.

The yoke sides of the two sound generating units 21 are arranged oppositely, and the diaphragm sides of the two sound generating units 21 are arranged reversely. The yoke side of the sound generating unit 21, i.e., the side thereof supporting the yoke 213, and the diaphragm side of the sound generating unit 21, i.e., the side thereof supporting the diaphragm 212, i.e., the sound generating side.

One of the sound generating units 21 and the housing 1 enclose a first front cavity 101, the other sound generating unit 21 and the housing 1 enclose a second front cavity 102, and the two sound generating units 21 and the housing 1 enclose a rear cavity 103.

In the present embodiment, one of the sound generating units 21 in the sound generating unit group 2 is fixed to the upper cover 11 and encloses the first front cavity 101 together with the upper cover 11, another sound generating unit 21 is fixed to the lower cover 12 and encloses the second front cavity 102 at a distance from the lower cover 12, and the two sound generating units 21, the upper cover 11, the upper cover side wall 13, the lower cover side wall 14 and the lower cover 12 enclose the rear cavity 103 together; the first front cavity 101 and the second front cavity 102 are respectively communicated with the sound outlet 3, that is, the first front cavity 101 and the second front cavity 102 are communicated with the outside through the sound outlet 3.

It should be noted that the positions and the number of the sound outlet holes are not limited. The sound outlet 3 may be a single-hole structure or a double-hole structure.

When the sound outlet 3 is of a single-hole structure, the sound outlet 3 may penetrate through the upper cover side wall 13 or the lower cover side wall 14 and serve as a side hole, and the first front cavity 101 and the second front cavity 102 are communicated with the outside through the side hole and form a side single-hole sound generating structure; the sound hole 3 may also be disposed through the upper cover 11 or the lower cover 12 and serve as a front hole, through which the first front cavity 101 and the second front cavity 102 communicate with the outside to form a front single-hole sound structure.

When the sound outlet 3 has a double-hole structure, that is, in the present embodiment, the sound outlet 3 includes a first sound outlet 31 penetrating through the upper cover side wall 13 and a second sound outlet 32 penetrating through the lower cover 12, that is, the first sound outlet 31 is a side hole, and the second sound outlet 32 is a front hole. The first sound outlet hole 31 communicates the first front cavity 101 with the outside and forms a side sound production structure, and the sound production unit 21 on the side is used for side sound production; the second sound outlet 32 communicates the second front cavity 102 with the outside and forms a front sound emitting structure, and the sound emitting unit 21 on the side is used for emitting sound. At this time, the first sound outlet 31 and the second sound outlet 32 together form a front-side double-hole sound generating structure.

Of course, when the sound outlet is a dual-hole structure, the first sound outlet 31 may be disposed through the upper cover 11 and used as a front hole, the second sound outlet 32 may be disposed through the lower cover 12 and used as a front hole, the first sound outlet 31 communicates the first front cavity 101 with the outside to form a front sound generating structure, and the second sound outlet 32 communicates the second front cavity 102 with the outside to form a front sound generating structure, so that the two front holes together form a front dual-hole sound generating structure; the first sound outlet 31 may be disposed through the upper cover sidewall 13 and serve as a side hole, the second sound outlet 32 may be disposed through the lower cover sidewall 14 and serve as a side hole, the first front cavity 101 is communicated with the outside through the first sound outlet 31 to form a side sound emitting structure, and the second front cavity 102 is communicated with the outside through the second sound outlet 32 to form a side sound emitting structure, so that the two side holes jointly form a side double-hole sound emitting structure.

It is worth mentioning that the sounding unit 21 for side sounding is one or two of a full-band horn and a low-band horn, and the sounding unit 21 for positive sounding is a tweeter.

The relative position relationship between the two sounding units 21 of the same sounding unit group 2 is also not limited, and it can be specifically set according to actual conditions.

For example, in the present embodiment, the two sounding units 21 of the sounding unit group 2 in the same group are arranged in a relative staggered manner, and the staggered arrangement structure enables the upper cover 11 and the lower cover 12 to have an arc-closing design structure, so that the edge thickness of one side of the arc-closing design structure is reduced, the space utilization efficiency is high, and the terminal assembly requirement is met.

Of course, it is also feasible that the two sounding units 21 of the same sounding unit group 2 are arranged oppositely, and the arrangement makes the vibrations generated by the two sounding units 21 offset each other, so as to effectively reduce the overall vibration of the speaker box 100.

In the above structure, two of the same group of sound unit groups 2 the yoke sides of the sound generating units 21 are oppositely arranged, two the vibrating diaphragm sides of the sound generating units 21 are reversely arranged to form a back-to-back sound generating structure, which effectively increases the sound generating loudness (i.e. volume) and other acoustic performances of the loudspeaker box 100, and improves about 12dB at 2000Hz, as shown in fig. 4.

Since the yoke sides of the two sound generating units 21 are located inside the housing 1, the heat dissipation of the sound generating units 21 is slow, and other heat dissipation devices are required to be additionally arranged to assist in heat dissipation.

In the present embodiment, the heat dissipation of the sound generating unit 21 is assisted by adding the magnetic shield plate 4, the steel plate 5, and the steel plate 6.

Magnetism barrier 4 includes two at least and pastes respectively and locates same two of sound production unit group 2 two of sound production monomer 21 yoke 213, steel sheet 5 presss from both sides and locates two between the magnetism barrier 4, steel sheet 6 is fixed in upper cover 11 and expose in upper cover 11 should expose the structure and effectively improve the radiating efficiency, steel sheet 5 with steel sheet 6 is connected and is realized the heat dissipation.

Further, the steel plate 5 includes a fixed plate 51 fixed to the two magnetic shield plates 4 at opposite sides, an extending wall 52 bent and extended from the fixed plate 51 in a direction approaching the steel plate 6, and a connecting wall 53 bent and extended from the extending wall 52 and fixed to the steel plate 6.

The sound generating unit 21 transmits heat to the steel plate 5 through the magnetic isolation plate 4, and the arrangement of the steel plate 5 is equivalent to increase of the heat dissipation area of the sound generating unit 21, so that the heat dissipation efficiency is high; meanwhile, the steel plate 5 also conducts heat to the steel plate 6 exposed out of the upper cover 11 and radiates the heat to the outside, so that the heat radiation efficiency is effectively improved, and the reliability tests of the maximum power and the power tolerance of the loudspeaker box 100 are greatly improved.

Furthermore, in order to further improve the heat dissipation of the sound generating unit 21, a heat sink (not shown) may be disposed between the magnetic shield 4 and the steel plate 5, so that the heat conduction efficiency between the magnetic shield 4 and the fixing plate 51 of the steel plate 5 is higher, the heat dissipation efficiency is further improved, and the reliability of the reliability test of the maximum power and the power endurance of the speaker box 100 is further improved.

In order to increase the sound generating loudness, i.e., the sound generating volume, of the speaker box 100, two sound generating units 21 in the same group are electrically connected in the same polarity to form a parallel structure.

In the present embodiment, the sound emitting unit group 2 includes two groups as an example. The two groups of sound generating unit groups 2 have the same structure, and the sound outlet 3 comprises at least two sound generating holes which are respectively communicated with the first front cavity 101 and the second front cavity 102 of the two groups of sound generating unit groups 2.

Furthermore, the casing 1 is rectangular, and the two groups of sounding unit groups 2 are symmetrically arranged along the long axis direction of the casing 1. The four sounding units 21 are electrically connected in the same polarity to form a parallel structure.

It is worth mentioning that the number of the magnetic shield plates 4 is not limited. For example, in the present embodiment, the number of the magnetic barriers 4 matches the number of the sound generating units 21, that is, the magnetic barriers 4 include four sound generating units 21 respectively attached to two sets of the sound generating unit groups 2, and the four magnetic barriers 4 are used to enhance the heat dissipation effect.

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, a sound production unit group accommodated in the accommodating space and a sound production hole penetrating through the shell, and is characterized in that the sound production unit group comprises two sound production units fixed on the shell respectively, each sound production unit comprises a basin frame fixed on the shell and a vibrating diaphragm and a magnetic yoke fixed on two opposite sides of the basin frame respectively, the magnetic yoke sides of the two sound production units are arranged oppositely, and the vibrating diaphragm sides of the two sound production units are arranged reversely; one of the sound generating units and the shell jointly enclose a first front cavity, the other sound generating unit and the shell jointly enclose a second front cavity, and the two sound generating units and the shell jointly enclose a rear cavity; the first front cavity and the second front cavity are respectively communicated with the sound outlet.

2. A loudspeaker enclosure according to claim 1, wherein the two sound generating units are offset with respect to each other.

3. A loudspeaker enclosure according to claim 1, wherein two of said sound generating cells are disposed in facing relationship.

4. The speaker box according to claim 2 or 3, wherein the housing includes an upper cover, a lower cover disposed opposite to the upper cover and spaced apart from the upper cover, an upper cover sidewall extending from the upper cover to the lower cover, and a lower cover sidewall extending from the lower cover to the upper cover and abutting against the upper cover sidewall, and the upper cover, the upper cover sidewall, the lower cover sidewall, and the lower cover together define the receiving space; one of them in the sound production unit group sound production monomer be fixed in the upper cover and with the upper cover encloses jointly into first antechamber, another sound production monomer is fixed in the lower cover and with the lower cover interval encloses into the second antechamber, two sound production monomer the upper cover lateral wall the lower cover lateral wall reaches the lower cover encloses jointly into the back chamber.

5. The speaker box according to claim 4, wherein the sound outlet holes include a first sound outlet hole penetrating through the side wall of the upper cover and a second sound outlet hole penetrating through the lower cover, the first sound outlet hole communicating the first front cavity with the outside and forming a side sound emitting structure, and the second sound outlet hole communicating the second front cavity with the outside and forming a front sound emitting structure.

6. The speaker box according to claim 4, wherein the sound outlet holes include a first sound outlet hole penetrating the upper cover and a second sound outlet hole penetrating the lower cover, the first sound outlet hole communicating the first front cavity with the outside and forming a front sound emitting structure, and the second sound outlet hole communicating the second front cavity with the outside and forming a front sound emitting structure.

7. The speaker box according to claim 4, wherein the sound outlet holes include a first sound outlet hole penetrating through the side wall of the upper cover and a second sound outlet hole penetrating through the side wall of the lower cover, the first sound outlet hole communicates the first front cavity with the outside and forms a side sound emitting structure, and the second sound outlet hole communicates the second front cavity with the outside and forms a side sound emitting structure.

8. The speaker box according to claim 4, further comprising two magnetic isolation plates respectively attached to the two yokes of the two sound generating units, a steel plate sandwiched between the two magnetic isolation plates, and a steel sheet fixed to and exposed from the upper cover; the steel plate is connected with the steel sheet.

9. The speaker cabinet as claimed in claim 8, wherein the steel plate includes a fixing plate fixed to the two magnetic shield plates at opposite sides thereof, an extension wall bent and extended from the fixing plate in a direction approaching the steel plate, and a connecting wall bent and extended from the extension wall and fixed to the steel plate.

10. A loudspeaker enclosure according to claim 1, wherein said sound generating unit groups comprise at least two groups, and said sound outlet holes comprise at least two and are respectively in communication with said first front cavity and said second front cavity of said two groups of sound generating unit groups.

11. The speaker cabinet as claimed in claim 8, wherein the housing is rectangular, and the two sound emitting unit sets are symmetrically arranged along the long axis direction of the housing.