CN106488367B

CN106488367B - Ultra-thin loudspeaker and portable stereo set thereof

Info

Publication number: CN106488367B
Application number: CN201610882820.7A
Authority: CN
Inventors: 唐文亮
Original assignee: Shenzhen Dehuida Intelligent Technology Co ltd
Current assignee: Shenzhen Dehuida Intelligent Technology Co ltd
Priority date: 2016-10-09
Filing date: 2016-10-09
Publication date: 2022-05-20
Anticipated expiration: 2036-10-09
Also published as: CN106488367A

Abstract

The invention discloses an ultrathin loudspeaker and a portable sound box thereof, which comprise a magnetic circuit device and a vibration device matched with the magnetic circuit device, wherein the magnetic circuit device comprises a T iron, an outer magnetic ring matched with a groove formed in the outer circumferential surface of the T iron, an inner magnetic ring matched with a pit formed in the middle of the T iron, and a washer matched with the inner magnetic ring; a gap is formed between the washer and the inner side wall of the pit, and a voice coil of the vibration device is inserted into the gap. Compared with the traditional loudspeaker, the loudspeaker with the structural design can effectively reduce the thickness of the loudspeaker, improve the efficiency of a magnetic circuit and further improve the tone quality of the loudspeaker.

Description

Ultra-thin loudspeaker and portable stereo set thereof

Technical Field

The invention relates to the technical field of loudspeakers, in particular to an ultrathin loudspeaker and a portable sound box thereof.

Background

A horn, also called a loudspeaker, is an electroacoustic transducer that converts electrical energy into acoustic energy through some physical effect. When the electron energy of difference passed to the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil produced the magnetic field interaction of an energy and magnet, and this kind of interaction causes the vibrating diaphragm vibration, because electron energy changes at any time, and the voice coil loudspeaker voice coil can be forward or backward motion, therefore the vibrating diaphragm of loudspeaker will follow the motion, and this action makes the density degree of air produce the change and produce sound.

With the application of LED technology in the video fields of televisions, displays, notebook computers, etc., video equipment is continuously required to be thin, and the image quality is further improved, because the corresponding sound quality and power requirements are further improved. The structure of traditional loudspeaker is generally as shown in fig. 1, including the basin frame 1 that extends to oblique top, terminal block 2 is installed on the muscle position of basin frame 1 lower surface, T iron 11 is installed in the bottom of basin frame 1, be equipped with magnet 3 in the T iron 11, china department 4 bonds the upper surface at magnet 3, bullet ripples 5 is installed inside basin frame 1, and the mesopore department of bullet ripples 5 is equipped with voice coil loudspeaker voice coil 6, the lower part of voice coil loudspeaker voice coil 6 is located between T iron 11 and the china department, the mesopore of vibrating diaphragm 7 and the 6 top of voice coil loudspeaker voice coil are connected, the outer lane of vibrating diaphragm 7 and the sound outlet department of basin frame 1 connect, the sound outlet department of basin frame 1 is equipped with a circle limit, the upper end of voice coil loudspeaker voice coil 6 is equipped with the dust cap 10 that bonds with glue, loudspeaker with this structural design, there is following shortcoming: firstly, the vibrating diaphragm is in a horn shape, so that the whole horn is higher in height and large in occupied space; the elastic wave is connected with the voice coil, so that the elastic wave is separated from the vibrating diaphragm by a certain distance to prevent the sound quality of the loudspeaker from being influenced when the vibrating diaphragm is touched, and the whole loudspeaker occupies a larger space from another angle; and thirdly, all parts are bonded by glue, and the glue is easy to fall off after being vibrated while the manufacturing process is complex, so that the loudspeaker is distorted.

Disclosure of Invention

The invention aims to provide an ultrathin loudspeaker with simple structure and good sound quality and a portable sound box thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

an ultrathin loudspeaker comprises a magnetic circuit device and a vibration device matched with the magnetic circuit device, wherein the magnetic circuit device comprises a T iron, an outer magnetic ring matched with a groove formed in the outer circumferential surface of the T iron, an inner magnetic ring matched with a pit formed in the middle of the T iron, and washers matched with the inner magnetic ring; a gap is formed between the washer and the inner side wall of the pit, and a voice coil of the vibration device is inserted into the gap.

The inner bottom surface of the pit in the middle of the T iron penetrates through the first through hole, and the first through hole and the second through hole which penetrates through the middle of the washer are coaxially arranged.

The two ends of the inner magnetic ring are respectively tightly matched with the first through hole and the second through hole, and the lower bottom surface of the washer is tightly attached to the inner bottom surface of the pit in the middle of the T-shaped iron.

The outer magnetic ring is formed by combining two C-shaped magnetic rings which are sequentially connected end to end, and the C-shaped magnetic rings are tightly matched with grooves formed in the outer circumferential surface of the T iron.

The vibration device further comprises a vibrating diaphragm fastened with the upper port of the voice coil, and a support matched with the peripheral edge of the vibrating diaphragm.

The vibrating diaphragm comprises a spherical aluminum foil layer and folding rings fastened with the peripheral edges of the aluminum foil layer, and the peripheral edges of the folding rings are fastened with the support.

The T iron is characterized in that steps are arranged on the edges of the periphery of the upper end face of the T iron, and the steps are fastened with the lower bottom face of the support.

The voice coil comprises an annular support and coils which are respectively arranged on the inner side wall and the outer side wall of the annular support in an annular mode, and the positive pole and the negative pole of each coil are respectively connected with wiring ends arranged on two sides of the support.

Wherein, the annular bracket is vertically fastened in the middle of the lower bottom surface of the aluminum foil layer.

A portable sound box comprises the ultrathin loudspeaker.

The invention has the beneficial effects that: the magnetic circuit device comprises a magnetic circuit device and a vibration device matched with the magnetic circuit device, wherein the magnetic circuit device comprises a T iron, an outer magnetic ring matched with a groove formed in the outer circumferential surface of the T iron, an inner magnetic ring matched with a pit formed in the middle of the T iron, and washers matched with the inner magnetic ring; a gap is formed between the washer and the inner side wall of the pit, and a voice coil of the vibration device is inserted into the gap. Compared with the traditional loudspeaker, the loudspeaker with the structural design can effectively reduce the thickness of the loudspeaker, improve the efficiency of a magnetic circuit and further improve the tone quality of the loudspeaker.

Drawings

Fig. 1 is a schematic structural view of a conventional horn in the prior art.

Fig. 2 is a schematic structural diagram of the ultra-thin horn of the present invention.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Referring to fig. 1 and 2, in the present embodiment, the ultra-thin horn includes a magnetic circuit device, and a vibration device matched with the magnetic circuit device, where the magnetic circuit device includes a T-iron 101, an outer magnetic ring 102 matched with a groove formed on an outer circumferential surface of the T-iron 101, an inner magnetic ring 103 matched with a concave recess 1011 formed in a middle of the T-iron 101, and a washer 104 matched with the inner magnetic ring 103; a gap is formed between the washer 104 and the inner side wall of the concave pit 1011; the vibration device comprises a vibrating diaphragm 106 and a support 107 matched with the peripheral edge of the vibrating diaphragm 106, the voice coil 105 is fastened on the lower bottom surface of the vibrating diaphragm 106, the voice coil 105 is inserted in a gap between the washer 104 and the inner side wall of the recess 1011, the voice coil 105 comprises an annular support 1051 and coils 1052 annularly arranged on the inner side wall and the outer side wall of the annular support 1051 respectively, and the positive pole and the negative pole of each coil 1052 are connected with terminals 1071 arranged on two sides of the support 107 respectively. The periphery of the upper end face of the T iron 101 is provided with steps, and the steps are fastened with the lower bottom face of the support 107.

With this structural design's ultra-thin loudspeaker, compact structure adopts inside and outside magnetic ring design, can effectively improve magnetic circuit efficiency, and then effectively promote loudspeaker tone quality.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, a first through hole 1012 penetrates through an inner bottom surface of a pit 1011 in the middle of the T-bar 101, the first through hole 1012 and a second through hole penetrating through the middle of the washer 104 are coaxially disposed, two ends of the inner magnetic ring 103 are respectively tightly fitted with the first through hole 1012 and the second through hole 1041, and a lower bottom surface of the washer 104 is tightly fitted with the inner bottom surface of the pit 1011 in the middle of the T-bar 101. With this structural design, can enough effectively fix a position the inner magnetic ring, can pass through the setting of inner magnetic ring again, convenient fasten washer 104 and T iron, effectively promote the concentricity between them after the assembly.

For convenience of assembly, the outer magnetic ring 102 is formed by combining two C-shaped magnetic rings which are sequentially connected end to end, and the C-shaped magnetic rings are tightly matched with grooves formed in the outer circumferential surface of the T iron 101.

In this embodiment, the diaphragm 106 includes a spherical aluminum foil layer 1061, and a folded ring 1062 fastened to the peripheral edge of the aluminum foil layer 1061, where the peripheral edge of the folded ring 1062 is fastened to the bracket 107. The ring-shaped support 1051 is vertically fastened to the middle of the lower bottom surface of the aluminum foil layer 1061.

A portable sound box comprises the ultrathin loudspeaker. This portable stereo set can effectively reduce the stereo set volume through the setting of ultra-thin loudspeaker for it is more convenient to carry.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. An ultrathin loudspeaker comprises a magnetic circuit device and a vibration device matched with the magnetic circuit device, and is characterized in that the magnetic circuit device comprises a T iron, an outer magnetic ring matched with a groove formed in the outer circumferential surface of the T iron, an inner magnetic ring matched with a pit formed in the middle of the T iron, and a washer matched with the inner magnetic ring; a gap is formed between the washer and the inner side wall of the pit, and a voice coil of the vibration device is inserted into the gap; a first through hole is arranged on the inner bottom surface of the pit in the middle of the T iron in a penetrating mode, and the first through hole and a second through hole arranged in the middle of the washer in a penetrating mode are coaxially arranged; two ends of the inner magnetic ring are respectively tightly matched with the first through hole and the second through hole, and the lower bottom surface of the washer is tightly attached to the inner bottom surface of the pit in the middle of the T-shaped iron; the outer magnetic ring is formed by combining two C-shaped magnetic rings which are sequentially connected end to end, and the C-shaped magnetic rings are tightly matched with grooves formed in the outer circumferential surface of the T iron.

2. The ultra-thin horn of claim 1, wherein: the vibration device also comprises a vibrating diaphragm fastened with the upper port of the voice coil, and a support matched with the peripheral edge of the vibrating diaphragm.

3. The ultra-thin horn of claim 2, wherein: the vibrating diaphragm comprises a spherical aluminum foil layer and folding rings fastened with the peripheral edge of the aluminum foil layer, and the peripheral edges of the folding rings are fastened with the bracket.

4. The ultra-thin horn of claim 2, wherein: the periphery of the upper end face of the T iron is provided with steps, and the steps are fastened with the lower bottom face of the support.

5. The ultra-thin horn of claim 3, wherein: the voice coil comprises an annular support and coils which are respectively arranged on the inner side wall and the outer side wall of the annular support in an annular mode, and the positive pole and the negative pole of each coil are respectively connected with wiring ends arranged on two sides of the support.

6. The ultra-thin horn of claim 5, wherein: the annular support is vertically fastened in the middle of the lower bottom surface of the aluminum foil layer.

7. A portable sound box is characterized in that: an ultra-thin horn as claimed in any one of the preceding claims 1 to 6.