CN111163405A

CN111163405A - Ultrathin loudspeaker, loudspeaker box and electronic product

Info

Publication number: CN111163405A
Application number: CN201911166219.8A
Authority: CN
Inventors: 李世煌
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-05-15

Abstract

The invention provides an ultrathin loudspeaker, which comprises a frame, wherein a magnetic circuit system and a vibration system are arranged in the frame, the magnetic circuit system is connected with the vibration system, a magnetic gap is arranged in the magnetic circuit system, and the vibration system comprises a voice coil tube, an elastic wave, a spherical vibrating diaphragm and a folded ring; the elastic wave and the spherical vibrating diaphragm are coaxially arranged and are positioned above the folding ring at a certain distance; the bullet ripples is provided with the trompil of stepping down in axle center department, the side fixed connection of trompil and spherical vibrating diaphragm of stepping down to expose partial spherical vibrating diaphragm. The ultrathin loudspeaker solves the problems that the loudspeaker in the prior art is large and heavy in size and the tone quality and the power of the ultrathin loudspeaker are difficult to guarantee. The invention also provides a sound box and an electronic product which are provided with the loudspeaker.

Description

Ultrathin loudspeaker, loudspeaker box and electronic product

Technical Field

The invention relates to the technical field of loudspeakers, in particular to an ultrathin loudspeaker.

Background

With the market demand and the progress of electronic technology, various electronic products are developed towards being thinner and smaller, and meanwhile, the requirements on the quality of the electronic products are higher and higher; the loudspeaker is a necessary accessory for most electronic products with audio output,

therefore, it is also desirable to make the sound-quality sound-. The tone quality of speaker mainly is by magnetic circuit and sound basin decision, and at present, most speaker still adopts the main structure form of toper basin as the vibrating diaphragm, reserves certain space for the bullet ripples for guaranteeing the normal work of speaker and prevents to set the end, and this kind of a magnetic circuit for driving speaker vibration is big and heavy, is difficult to integrate to in the electronic and electrical products of miniaturization, slimming day by day, can't satisfy the demand of modern technological development.

In order to meet the requirement of thinning the loudspeaker, the height of a cone diaphragm of the traditional loudspeaker and the total height of a magnet in a magnetic circuit system can be reduced, so that the overall thickness of the loudspeaker is thinned. However, the ultra-thin speaker is limited by space, the tone quality is difficult to ensure, especially the bass effect and the fidelity are obviously reduced, and meanwhile, the ultra-thin speaker has a complex structure, small amplitude and inconvenient assembly, and all of the problems are difficult to limit the development of the current high-power ultra-thin speaker.

Disclosure of Invention

The invention aims to provide an ultrathin loudspeaker, which solves the problems that the loudspeaker in the prior art is large and heavy in size and the tone quality and the power of the ultrathin loudspeaker are difficult to guarantee.

The technical scheme of the invention is realized as follows:

an ultrathin loudspeaker comprises a frame, wherein a magnetic circuit system and a vibration system are arranged in the frame, the magnetic circuit system is connected with the vibration system, a magnetic gap is arranged in the magnetic circuit system, and the vibration system comprises a voice coil tube, an elastic wave, a spherical vibrating diaphragm and a folded ring;

the elastic wave and the spherical vibrating diaphragm are coaxially arranged and are positioned above the folding ring at a certain distance; the bullet ripples is provided with the trompil of stepping down in axle center department, the side fixed connection of trompil and spherical vibrating diaphragm of stepping down to expose partial spherical vibrating diaphragm.

In a preferred embodiment: the outer side of the elastic wave is fixed with the inner surface of the basin frame.

In a preferred embodiment: the inner side surface of the abdicating open hole is fixedly adhered to the side surface of the spherical vibrating diaphragm.

In a preferred embodiment: a voice coil wire is wound outside the voice coil tube; the inner side of the spherical vibrating diaphragm is connected with the voice coil pipe, and the outer side of the spherical vibrating diaphragm is connected with the side face of the basin frame through the folding ring.

In a preferred embodiment: the bottom of the basin frame is provided with a mounting hole, the magnetic circuit system is arranged in the mounting hole, and the voice coil wire is positioned in a magnetic gap of the magnetic circuit system.

The invention also provides a sound box which comprises a box body and the ultrathin loudspeaker.

The invention also provides an electronic product which comprises an electronic product body and the ultrathin loudspeaker.

In a preferred embodiment: the electronic product body is a mobile phone, a tablet personal computer, a television or a notebook computer

The working principle is as follows: the ultrathin loudspeaker of the invention is an electroacoustic transducer which directly radiates sound to a free space, after the power supply is switched on, acting force is generated in the direction vertical to a magnetic circuit system and a current according to the left-hand rule, under the action of alternating current, when the current direction changes, the current direction around the magnetic circuit system changes, and the direction of the acting force in the direction vertical to the magnetic circuit system and the current also changes according to the left-hand rule, and the process is repeated; therefore, under the action of external alternating current, the audio current flowing through the voice coil tube in the magnetic circuit system interacts with the permanent magnetic field to generate force which enables the basin frame to vibrate along the axial direction, and the spherical diaphragm connected with the voice coil tube is pushed to radiate sound outwards, so that the sound conversion is completed.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention moves the elastic wave up to the top of the basin frame, adopts the spherical vibrating diaphragm, the side wall of the spherical vibrating diaphragm is fixed with the elastic wave, and the outer side of the spherical vibrating diaphragm is fixed on the side part of the basin frame through the folded ring.

2. According to the invention, the size of the elastic wave abdicating opening is increased, so that the coverage of the elastic wave on the middle part of the cone can be reduced, and the bass loudspeaker with the structure can keep a better medium-high frequency.

3. The invention has the biggest characteristic that the thickness of the woofer can be minimized, and the proper height is arranged between the elastic wave and the voice cone folded ring, thereby having good effect on the stability of the vibration of the voice coil.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 according to the drawings without creative efforts.

FIG. 1 is a perspective view of a speaker in accordance with a preferred embodiment of the present invention;

fig. 2 is a cross-sectional view of a speaker in a preferred embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the attached drawings 1-2, the voice coil loudspeaker comprises a basin frame 1, wherein a magnetic circuit system and a vibration system are arranged in the basin frame 1, the magnetic circuit system is connected with the vibration system, a magnetic gap is arranged in the magnetic circuit system, the vibration system comprises a voice coil pipe 9, an elastic wave 10, a spherical vibrating diaphragm 8 and a corrugated rim 7, and a voice coil wire 6 is wound at the bottom of the voice coil pipe 9; the bottom of basin frame 1 is equipped with mounting hole 101, is equipped with magnetic circuit in the mounting hole 101, and voice coil wire 6 is arranged in the magnetic gap, and the top of voice coil pipe 9 is equipped with bullet ripples 10, plays ripples 10 and magnetic circuit fixed connection, and the bottom of bullet ripples 10 is equipped with spherical vibrating diaphragm 8, and the inboard and the voice coil pipe 9 of spherical vibrating diaphragm 8 are connected, and the outside of spherical vibrating diaphragm 8 is connected with the top of basin frame 1 through rolling over ring 7. According to the invention, the elastic wave 10 is moved upwards to the top of the basin frame 1, the conical basin vibrating diaphragm is replaced by the spherical vibrating diaphragm 8, the side surface of the spherical vibrating diaphragm 8 is fixed by the elastic wave 10, and the outer side of the spherical vibrating diaphragm 8 is fixed on the side surface of the basin frame 1 by the folding ring 7.

In this embodiment, basin frame 1 is the setting of radius platform, and its inside is the cavity structure, and the lateral part of basin frame 1 is equipped with first joint ring 103, and first joint ring 103 is located the side of basin frame 1 and is the annular setting along the circumference of its cavity. The edge 7 includes a first fixed end 701, a connection end 702 and a second fixed end 703, the inside of the edge 7 is also provided with a cavity, the cross-sectional view of the edge 7 is an inverted U-shaped configuration, the first fixed end 701 and the second fixed end 703 are of a planar structure, and the connection end 702 is provided in an arc shape. The first fixing end 701 is connected to the first snap ring 103, and the second fixing end 703 is connected to the outer convex side of the spherical diaphragm 8. The first fixed end 701 of the folding ring 7 is fixed on the side of the basin frame 1 through the first clamping ring 103, then the spherical diaphragm 8 is placed, at this moment, the side of the outer convex surface of the spherical diaphragm 8 is connected with the top of the second fixed end 703 of the folding ring 7, and the connection is simple and firm. In general, the first fixing end 701 is adhesively connected to the first snap ring 103 by an adhesive, and the second fixing end 703 is also adhesively connected to the spherical diaphragm 8 by an adhesive.

At this time, the inner side of the abdicating hole of the elastic wave 10 is also bonded to the side surface of the outer convex surface of the spherical diaphragm 8 by the adhesive. In order to fix the damper 10 to the frame 1, a second snap ring 104 is further provided on the top of the frame 1.

The basin stand 1 is provided with a plurality of through holes 102, and the through holes 102 are symmetrically distributed by taking the mounting hole 101 as the center so as to finish the air radiation at the rear part of the vibration cavity.

In the invention, the magnetic circuit system comprises an iron core 2, a magnet 4 and a washer 5, the iron core 2 is connected in the mounting hole 101 in a clamping manner, the magnet 4 is sleeved outside the side wall of the iron core 2, and the washer 5 is arranged on the magnet 4. Normally, the iron core 2 is adhesively connected to the mounting hole 101 by an adhesive, and the magnet 4 is adhesively connected to the washer 5 by an adhesive.

The working principle is as follows: taking the basin stand 1, and bonding the iron core 2 into the mounting hole 101 of the basin stand 1 through a bonding agent to enable the iron core 2 to be in adaptive connection with the mounting hole 101; sequentially bonding and connecting the magnet 4 and the washer 5 in the U-shaped interior of the iron core 2 from the top of the basin frame 1, and enabling the positions of the magnet 4 and the washer 5 to be correspondingly consistent and reserving a magnetic gap between the magnet 4 and the iron core 2; a voice coil tube 9 is taken, a voice coil wire 6 is wound on the outer side of the bottom of the voice coil tube 9, and the voice coil tube 9 is connected in the magnetic gap in a clamping mode through the voice coil wire 6; taking a folding ring 7, fixing a first fixed end 701 of the folding ring 7 on the top of the basin frame 1 through a clamping ring 103, bonding and connecting the first fixed end 701 and the clamping ring 103 through a bonding agent, then placing a spherical diaphragm 8, wherein the bottom of the flat diaphragm 8 is connected with the top of a second fixed end 703 of the folding ring 7, meanwhile, the inner side of the spherical diaphragm 8 is in contact connection with a voice coil tube 9, and the top surface of the spherical diaphragm 8 is flush with the top of the voice coil tube 9; taking the damper 10, placing the outer edge of the damper 10 on the inner edge of the flat-plate diaphragm 8, and bonding the bottom of the damper 10 with the top of the spherical diaphragm 8 through an adhesive.

The ultrathin loudspeaker of the invention is an electroacoustic transducer which directly radiates sound to a free space, after the power supply is switched on, acting force is generated in the direction vertical to a magnetic circuit system and a current according to the left-hand rule, under the action of alternating current, when the current direction changes, the current direction around the magnetic circuit system changes, and the direction of the acting force generated in the direction vertical to the magnetic circuit system and the current also changes according to the left-hand rule, and the steps are repeated; therefore, under the action of external alternating current, the audio current flowing through the voice coil tube 9 in the magnetic circuit system interacts with the permanent magnetic field to generate a force which enables the basin frame 1 to vibrate along the axial direction, and pushes the spherical diaphragm 8 connected with the voice coil tube 9 to radiate sound outwards, so that the sound conversion is completed.

In this embodiment, the damper 10 has some vent holes besides the abdicating hole, for example, the damper 10 is made of woven material, and the holes existing during weaving can be used as the vent holes, so that the vent holes can increase the air permeability of the damper 10, and the air after the vibration of the spherical diaphragm 8 can better penetrate through the damper 10, thereby increasing the medium-high frequency characteristic of the speaker.

The loudspeaker can be assembled in a box body to be used as a sound box, and also can be assembled in electronic products such as mobile phones, notebooks, tablet computers, televisions and the like to be used.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An ultra-thin speaker, characterized in that: the magnetic-vibration basin comprises a basin frame, wherein a magnetic circuit system and a vibration system are arranged in the basin frame, the magnetic circuit system is connected with the vibration system, a magnetic gap is arranged in the magnetic circuit system, and the vibration system comprises a voice coil pipe, an elastic wave, a spherical vibrating diaphragm and a folded ring;

2. The ultra-thin speaker as claimed in claim 1, wherein: the outer side of the elastic wave is fixed with the inner surface of the basin frame.

3. The ultra-thin speaker as claimed in claim 1, wherein: the inner side surface of the abdicating open hole is fixedly adhered to the side surface of the spherical vibrating diaphragm.

4. The ultra-thin speaker as claimed in claim 1, wherein: a voice coil wire is wound outside the voice coil tube; the inner side of the spherical vibrating diaphragm is connected with the voice coil pipe, and the outer side of the spherical vibrating diaphragm is connected with the side face of the basin frame through the folding ring.

5. The ultra-thin speaker as claimed in claim 4, wherein: the bottom of the basin frame is provided with a mounting hole, the magnetic circuit system is arranged in the mounting hole, and the voice coil wire is positioned in a magnetic gap of the magnetic circuit system.

6. An acoustic enclosure comprising a cabinet and the ultra-thin loudspeaker of any one of claims 1-5.

7. An electronic product comprising an electronic product body and the ultra-thin speaker of any one of claims 1 to 5.

8. An electronic product according to claim 7, wherein: the electronic product body is a mobile phone, a tablet personal computer, a television or a notebook computer.