CN114786103A

CN114786103A - Plane driving loudspeaker

Info

Publication number: CN114786103A
Application number: CN202210529238.8A
Authority: CN
Inventors: 刘垣皜; 李建平
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-07-22

Abstract

The invention discloses a plane driving loudspeaker, which comprises a plane driving vibrating diaphragm and a permanent magnet group array which are arranged on a group shell, wherein the loudspeaker is provided with two plane driving vibrating diaphragms and only one group of permanent magnet group array, one plane driving vibrating diaphragm is positioned on one side of the permanent magnet array and fixed on one side surface of the group shell, and the other plane driving vibrating diaphragm is positioned on the other side of the permanent magnet array and fixed on the other side surface of the group shell; the two plane driving vibration diaphragms share the same permanent magnet group array. According to the scheme, the permanent magnet group array is not required to be added under the condition of adding the plane driving vibrating diaphragm, two sides of the magnetic pole of the permanent magnet group array are fully and effectively utilized, the sound quality is improved, the production and manufacturing cost is effectively reduced, the internal space of the loudspeaker can be further saved, and the loudspeaker is more compact and ultrathin in size; the innovative scheme has strong practicability and very wide market prospect.

Description

Plane driving loudspeaker

Technical Field

The invention relates to the technical field of loudspeakers, in particular to a plane driving loudspeaker.

Background

Currently, the 99% of the market share of the loudspeaker market is moving coil loudspeakers, and flat panel loudspeakers (planar drive loudspeakers) account for a very small number. The moving-coil loudspeaker is of a closed structure, harmonic distortion is easily generated when a piston moves, and the playback effect of music is difficult to guarantee. The flat panel speaker is basically formed by one vibrating diaphragm at present, and one vibrating diaphragm cannot achieve balanced performance in three frequency bands of medium and low, for example, in a scene of an electronic competition game, the low frequency is strong, the resolution of human voice is high, and the flat panel speaker at present cannot achieve the balanced performance.

The conventional speaker has the following problems: 1. the traditional flat panel loudspeaker has harmonic distortion and cannot give consideration to three-frequency balance comprehensively; 2. traditional moving-coil loudspeaker adopts closed design, and sound is general comparatively muddy, sound analytic power is not enough, and eardrum and auditory nerve are intervened repeatedly to atmospheric flow makes people dizziness and brain bloated.

Disclosure of Invention

In view of the above problems, the present invention aims to provide a new speaker structure that realizes a balanced triple-frequency sound effect and open comfort at low cost.

In order to realize the technical purpose, the scheme of the invention is as follows: a plane driving loudspeaker comprises a plane driving vibrating diaphragm and a permanent magnet group array which are arranged on a group shell, wherein the loudspeaker is provided with two plane driving vibrating diaphragms, the loudspeaker is provided with only one group of permanent magnet group array, the permanent magnet group array is arranged on the group shell, one plane driving vibrating diaphragm is positioned on one side of the permanent magnet array and fixed on one side surface of the group shell, and the other plane driving vibrating diaphragm is positioned on the other side of the permanent magnet array and fixed on the other side surface of the group shell; the two plane driving vibration diaphragms share the same permanent magnet group array.

Preferably, the two planar driving diaphragms have different areas, one of the two planar driving diaphragms is a large planar driving diaphragm, and the other planar driving diaphragm is a small planar driving diaphragm having an area smaller than that of the large planar driving diaphragm.

Preferably, the large planar driving diaphragm is composed of a first diaphragm body fixed on the first support and a low-mid voice plane coil, and the small planar driving diaphragm is composed of a second diaphragm body fixed on the second support and a high-mid voice plane coil.

Preferably, the vibration isolator further comprises an outer side cover and an inner side cover which are arranged on two sides of the group shell, the outer side cover and the inner side cover are of flat annular structures, the outer side cover is attached and fixed to the surface of the large plane driving vibrating diaphragm, and the inner side cover is attached and fixed to the surface of the small plane driving vibrating diaphragm.

Preferably, the outer side cover and the inner side cover are provided with strip-shaped and hole-shaped vent holes, and the vent holes are uniformly distributed on the outer side cover and the inner side cover in an annular shape.

Preferably, the two sides of the group shell are respectively provided with a sinking groove, and the first support and the second support are respectively buckled on the sinking grooves on the two sides of the group shell.

Preferably, a gasket is arranged between the facet driving diaphragm and the group shell.

Preferably, the permanent magnet group array is composed of a plurality of permanent magnets which are horizontally arranged at equal intervals.

Preferably, the first stent and the second stent are both annular and have different diameters.

The beneficial effects of the invention are: the invention has the beneficial effects that: the scheme realizes the open design of the loudspeaker by using the plane driving diaphragm, and avoids airflow from repeatedly interfering the eardrum; particularly, two plane driving diaphragms with different areas are adopted, so that high, medium and low frequency balance is realized, the sound saturation is better, and the HiFi sound quality can be effectively restored; most importantly, the permanent magnet group array is not required to be added under the condition of adding the plane driving vibrating diaphragm, two sides of magnetic poles of the permanent magnet group array are fully and effectively utilized, the sound quality is improved, meanwhile, the production and manufacturing cost is effectively reduced, the internal space of the loudspeaker can be further saved, and the loudspeaker is more compact and ultrathin in size; the innovative scheme has strong practicability and very wide market prospect.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a first schematic diagram of the internal structure of the present invention;

fig. 3 is a schematic diagram of the internal structure of the present invention.

In the figure: 1. an inner side cover; 2. the small plane drives the vibrating diaphragm; 201. a second membrane body; 202. a high and middle pitch flat voice coil; 203. a second bracket; 3. a gasket; 4. assembling a shell; 401. sinking a groove; 402. air holes are formed; 5. an array of permanent magnet groups; 6. a large plane drive diaphragm; 601. a first membrane body; 602. a low-mid-range planar voice coil; 603. a first bracket; 7. an outer side cover; 8. and (4) air holes.

Detailed Description

The invention is described in further detail below with reference to the figures and specific embodiments. In order to clearly and completely describe the technical scheme, the following embodiments are selected for illustration; the following examples are part of the present invention; other embodiments, which can be obtained without inventive step, are within the scope of the present invention.

In the following embodiments, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top/bottom", and other orientations and positional relationships are all based on the orientations and positional relationships shown in the drawings, and are only for the convenience of clarity of description of the embodiments, but do not indicate or imply that the devices or elements referred to must have specific orientations, and therefore, should not be construed as limiting the present application. Meanwhile, the terms "first" and "second" in the embodiments are used only for distinguishing the descriptive purposes and are not intended to indicate or imply relative importance.

As shown in fig. 1-3, a planar driving speaker according to an embodiment of the present invention includes a planar driving diaphragm and a permanent magnet array 5 mounted on a set housing 4, the speaker has two planar driving diaphragms with different areas, one of the two planar driving diaphragms is a large planar driving diaphragm 6, and the other is a small planar driving diaphragm 2 with an area smaller than that of the large planar driving diaphragm 6, and the two planar driving diaphragms with different areas can achieve high-medium-low-frequency balance, good sound saturation, and effective HiFi sound quality reduction; the loudspeaker only has a set of permanent magnetism group array 5, this permanent magnetism group array 5 sets up on group's shell 4, one side that big plane drive vibrating diaphragm 6 is located permanent magnetism array is fixed at 4 side of group's shell, the opposite side that little plane drive vibrating diaphragm 2 is located permanent magnetism array is fixed at the another side of group's shell 4, two same group of permanent magnetism group array 5 of plane drive vibrating diaphragm sharing, two plane drive vibrating diaphragms realize the vibration simultaneously and produce the sound when electromagnetic field is mutual-inductive action, make full use of the magnetic pole two sides of permanent magnetism group array, effectual reduction the production manufacturing cost when promoting tone quality, the preparation material of speaker has both been saved, the occupation space of permanent magnetism group array 5 in the loudspeaker has been reduced simultaneously, be favorable to flat panel speaker's miniaturized design.

The large flat driving diaphragm 6 is composed of a first diaphragm body 601 fixed on a first support 603 and a low-middle voice plane 602, the small flat driving diaphragm 2 is composed of a second diaphragm body 201 fixed on a second support 203 and a high-middle voice plane 202, and the first support 603 and the second support 203 are both in an annular structure.

In order to seal the components in the group shell 4, the loudspeaker further comprises an outer side cover 7 and an inner side cover 1 which are arranged on two sides of the group shell 4, wherein the outer side cover 7 and the inner side cover 1 are of flat annular structures, the outer side cover 7 is attached and fixed to the surface of the large-plane driving diaphragm 6, and the inner side cover 1 is attached and fixed to the surface of the small-plane driving diaphragm 2, so that the structure of the whole loudspeaker is planar, and the loudspeaker can be made thinner and closer to the auricle.

The loudspeaker is provided with strip-shaped and hole-shaped vent holes 8 on the outer side cover 7 and the inner side cover 1, the vent holes 8 are annularly and uniformly distributed on the outer side cover 7 and the inner side cover 1, in addition, a series of vent holes 402 are drilled outside the group shell 4 for the heat dissipation and ventilation effects of the product, better air circulation can be achieved, the sound is more permeable, and the sound outside the earphone can be heard while the music is heard.

In order to fix the first bracket 603 and the second bracket 203, the two sides of the set case 4 are respectively provided with a sinking groove 401, the first bracket 603 is buckled on the sinking groove 401 at one side of the set case 4, the second bracket 203 is buckled on the sinking groove 401 at the other side of the set case 4, the first bracket 603 and the second bracket 203 are both circular, and the diameters of the two brackets are different.

The high and middle voice plane voice coil 202 and the low and middle voice plane voice coil 602 of the loudspeaker are respectively provided with coils, the two ends of each coil are linear lines, the middle of each coil is an S-shaped line, the frequency response of the S-shaped coil at medium and high frequencies is better, the frequency response of the linear line type coil is partial to medium and low frequencies, the two lines are combined, the ultra-wide frequency response of the loudspeaker is given, the medium and high frequencies can directly and quickly enter the loudspeaker, the medium and low frequencies can generate wider low frequency extension around the auricle, and the two lines are combined to make sound more natural and relaxed.

As a preferred technical scheme, a gasket 3 is arranged between the facet driving diaphragm 2 and the group shell 4, the facet driving diaphragm 2 can be heightened, when vibrating, the facet driving diaphragm 2 can generate radiation sound pressure, and the height of the gasket 3 can be designed according to actual needs.

As a preferred technical solution, the permanent magnet group array 5 is composed of a plurality of permanent magnets arranged horizontally and equidistantly.

The application has the following advantages: the small plane driving diaphragm 2 is responsible for middle and high pitch, the large plane driving diaphragm 6 is responsible for middle and low pitch, middle, high and low three-frequency balance is realized, and the problem that the single diaphragm of the traditional loudspeaker has insufficient resolving power is solved by adopting double diaphragms; secondly, the sound density is high, the transmission distance is long, and immersive experience is achieved; thirdly, as the whole body adopts plane drive without a cavity, the whole body can be small, handy, light and thin; fourthly, the product process is optimized, the production efficiency is improved, and meanwhile, the manufacturing cost is reduced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A plane driving loudspeaker comprises a plane driving vibrating diaphragm and a permanent magnet group array which are arranged on a group shell, and is characterized in that the loudspeaker is provided with two plane driving vibrating diaphragms, the loudspeaker is provided with only one group of permanent magnet group array, the permanent magnet group array is arranged on the group shell, one plane driving vibrating diaphragm is positioned on one side of the permanent magnet array and fixed on one side surface of the group shell, and the other plane driving vibrating diaphragm is positioned on the other side of the permanent magnet array and fixed on the other side surface of the group shell; the two plane driving diaphragms share the same permanent magnet group array.

2. A flat driven loudspeaker according to claim 1 wherein the two flat driven diaphragms differ in area, one of which is a large flat driven diaphragm and the other of which is a small flat driven diaphragm having a smaller area than the large flat driven diaphragm.

3. A flat-drive loudspeaker according to claim 2, wherein the large flat-drive diaphragm is formed by a first diaphragm body and a low-mid voice coil secured to a first support, and the small flat-drive diaphragm is formed by a second diaphragm body and a high-mid voice coil secured to a second support.

4. The planar driving loudspeaker according to claim 2, further comprising an outer side cover and an inner side cover mounted on two sides of the set housing, wherein the outer side cover and the inner side cover are flat ring-shaped structures, the outer side cover is attached and fixed on the surface of the large planar driving diaphragm, and the inner side cover is attached and fixed on the surface of the small planar driving diaphragm.

5. The planar driving loudspeaker according to claim 4, wherein the outer side cover and the inner side cover are provided with air holes in the shape of strips and holes, and the air holes are annularly and uniformly distributed on the outer side cover and the inner side cover.

6. The plane driving speaker as claimed in claim 3, wherein the set housing is provided with a sink at both sides thereof, and the first and second brackets are fastened to the sinks at both sides of the set housing.

7. A flat-drive loudspeaker as claimed in claim 2, wherein a spacer is provided between the facet-drive diaphragm and the set of shells.

8. A flat-panel drive loudspeaker according to claim 2, wherein said array of permanent magnet groups is comprised of a plurality of permanent magnets arranged horizontally equidistantly.

9. A flat-panel drive loudspeaker according to claim 3, wherein the first and second supports are annular and have different diameters.