阅读说明：本技术 振膜折环 (Vibrating diaphragm folding ring ) 是由 韩坤 于 2019-10-12 设计创作，主要内容包括：本发明提供了一种振膜折环。振膜折环包括由外向内顺次连接的第一连接段、拱形段和第二连接段,且拱形段的顶点处的弹性最大,拱形段的弹性由顶点处向内外两侧减小,其中,内侧是指振膜折环靠近振膜折环的中心的一侧,外侧是指振膜折环远离振膜折环的中心的一侧。本发明解决了现有技术中喇叭系统存在获得较差的总谐波失真表现的问题。(The invention provides a vibrating diaphragm corrugated rim. The vibrating diaphragm rolls over the ring and includes first linkage segment, arch section and the second linkage segment that outside-in connects in order, and the elasticity of the apex of arch section is the biggest, and the elasticity of arch section is reduced to inside and outside both sides by apex department, and wherein, inboard indicates that the vibrating diaphragm rolls over the ring and is close to one side at the center that the vibrating diaphragm rolled over the ring, and the outside indicates that the vibrating diaphragm rolls over the ring and keeps away from one side at the center that the vibrating diaphragm rolled over the ring. The invention solves the problem that the loudspeaker system in the prior art obtains poor total harmonic distortion performance.)

1. The vibrating diaphragm edge is characterized by comprising a first connecting section (10), an arch section (20) and a second connecting section (30) which are sequentially connected from outside to inside, wherein the elasticity of the top point (21) of the arch section (20) is the largest, the elasticity of the arch section (20) is reduced from the top point (21) to the inside and the outside, the inner side refers to one side of the vibrating diaphragm edge close to the center of the vibrating diaphragm edge, and the outer side refers to one side of the vibrating diaphragm edge far away from the center of the vibrating diaphragm edge.

2. The diaphragm edge of claim 1, wherein the elasticity of the arch-shaped section (20) is distributed symmetrically with respect to the apex (21).

3. The diaphragm edge of claim 1, wherein the arch-shaped segment (20) includes a region with maximum elasticity and a plurality of regions with variable elasticity inside and outside the region with maximum elasticity, the region being offset from the vertex (21) to a side of the first connecting segment (10) by a first predetermined distance L1, the region being offset from the vertex (21) to a side of the second connecting segment (30) by a second predetermined distance L2, and the region between the first predetermined distance L1 and the second predetermined distance L2 constituting the region with maximum elasticity.

4. The diaphragm edge of claim 3, wherein the first predetermined distance L1 is equal to the second predetermined distance L2, and a ratio of the first predetermined distance L1 to a distance L between the first connection section (10) and the second connection section (30) is greater than or equal to 0.08 and less than or equal to 0.125.

5. The diaphragm edge of claim 4, wherein the elastic change region of the plurality of elastic change regions adjacent to the region with the largest elasticity is a second-strongest region, and a ratio of the elasticity of the second-strongest region to the elasticity of the region with the largest elasticity is greater than or equal to 0.8 and less than or equal to 0.95.

6. The diaphragm edge of claim 5, wherein,

a third preset distance L3 is deviated from the vertex (21) to the side where the first connecting section (10) is located, the region between the third preset distance L3 and the first preset distance L1 forms the secondary strong region, the third preset distance L3 is greater than the first preset distance L1, and the ratio of the third preset distance L3 to the distance L is greater than or equal to 0.125 and less than or equal to 0.25; and/or

The vertex (21) deviates from one side of the second connecting section (30) by a fourth preset distance L4, the fourth preset distance L4 is equal to the second preset distance L2, the second strong region is formed by the region, the fourth preset distance L4 is larger than the second preset distance L2, and the ratio of the fourth preset distance L4 to the distance L is larger than or equal to 0.125 and smaller than or equal to 0.25.

7. The diaphragm edge of claim 4, wherein the elasticity-varying region of the plurality of elasticity-varying regions adjacent to the first connection section (10) and/or the second connection section (30) is a weak elasticity region, and a ratio of elasticity of the weak elasticity region to elasticity of the maximum elasticity region is greater than or equal to 0.6 and less than or equal to 0.95.

8. The diaphragm edge of claim 7,

a fifth preset distance L5 is deviated from the vertex (21) to the side where the first connecting section (10) is located, the area between the fifth preset distance L5 and the first connecting section (10) forms the weak elastic area, and the ratio of the fifth preset distance L5 to the distance L is more than or equal to 0.25 and less than or equal to 0.5; and/or

The side of the second connecting section (30) where the vertex (21) is located is deviated from a sixth preset distance L6, the area between the sixth preset distance L6 and the second connecting section (30) forms the weak elastic area, and the ratio of the sixth preset distance L6 to the distance L is greater than or equal to 0.25 and less than or equal to 0.5.

9. The diaphragm edge of any one of claims 3 to 8,

the elastic material of the elastic maximum area and the elastic change areas are different; or

The elastic material of the elastic maximum area and the elastic variable areas are the same, patterns are arranged on the arch sections (20), and at least one of the shapes, the heights and the arrangement density of the patterns in the elastic maximum area and the elastic variable areas are different.

10. The diaphragm edge of any one of claims 3 to 8, wherein the elastic material of the region with the greatest elasticity and the plurality of regions with varying elasticity is the same, and the greater the thickness of the diaphragm edge, the greater the elasticity of the diaphragm edge, and the greater the thickness of the arch section (20) in the region with the greatest elasticity is than the thickness of the arch section (20) in the plurality of regions with varying elasticity.

Technical Field

The invention relates to the technical field of acoustic equipment, in particular to a vibrating diaphragm corrugated rim.

Background

In acoustic design, total harmonic distortion is one of important criteria for sound quality evaluation, and has been receiving wide attention. Among them, the nonlinear model of Klippel (speaker analysis tool) has described in detail the generation mechanism of total harmonic distortion. The total harmonic distortion is caused by the nonlinearity of a loudspeaker system, and whether an elastic coefficient curve (Kms (x)) is straight and symmetrical directly influences the total harmonic distortion performance of a loudspeaker unit and the system. In general, it is desirable to design a straight line, but in practical applications, due to the thermal effect of the voice coil and the bunching effect of the edge glue on the diaphragm when the amplitude is large, the elasticity of the whole system is often changed, and thus poor total harmonic distortion performance is obtained.

That is, the horn system of the prior art has a problem of obtaining poor performance of total harmonic distortion.

Disclosure of Invention

The invention mainly aims to provide a diaphragm edge so as to solve the problem that a loudspeaker system in the prior art obtains poor total harmonic distortion performance.

In order to achieve the above object, according to one aspect of the present invention, there is provided a diaphragm edge, including a first connecting section, an arch section and a second connecting section, which are sequentially connected from outside to inside, and the elasticity of the arch section is the largest at a vertex of the arch section, and the elasticity of the arch section is reduced from the vertex to both inside and outside, where the inside is a side of the diaphragm edge close to a center of the diaphragm edge, and the outside is a side of the diaphragm edge far from the center of the diaphragm edge.

Further, the elasticity of the arch section is symmetrically distributed by taking the vertex as a reference.

Furthermore, the arch section comprises an elastic maximum area and a plurality of elastic change areas which are positioned on the inner side and the outer side of the elastic maximum area, the first preset distance L1 is deviated from the vertex to the side where the first connecting section is located, the second preset distance L2 is deviated from the vertex to the side where the second connecting section is located, and the area between the first preset distance L1 and the second preset distance L2 forms the elastic maximum area.

Further, the first preset distance L1 is equal to the second preset distance L2, and a ratio of the first preset distance L1 to the distance L between the first connecting section and the second connecting section is greater than or equal to 0.08 and less than or equal to 0.125.

Further, an elasticity variation region adjacent to the elasticity maximum region among the plurality of elasticity variation regions is a second-strength region, and a ratio of the elasticity of the second-strength region to the elasticity of the elasticity maximum region is 0.8 or more and 0.95 or less.

Furthermore, a third preset distance L3 is deviated from the vertex to the side where the first connecting section is located, a secondary strong region is formed by a region between the third preset distance L3 and the first preset distance L1, the third preset distance L3 is greater than the first preset distance L1, and the ratio of the third preset distance L3 to the distance L is greater than or equal to 0.125 and less than or equal to 0.25; and/or the vertex deviates from the side where the second connecting section is located by a fourth preset distance L4, the region between the fourth preset distance L4 and the second preset distance L2 forms a secondary strong region, the fourth preset distance L4 is greater than the second preset distance L2, and the ratio of the fourth preset distance L4 to the distance L is greater than or equal to 0.125 and less than or equal to 0.25.

Further, the elastic change region adjacent to the first connection section and/or the second connection section among the plurality of elastic change regions is a weak elastic region, and a ratio of the elasticity of the weak elastic region to the elasticity of the region having the largest elasticity is 0.6 or more and 0.95 or less.

Furthermore, the vertex deviates from the side where the first connecting section is located by a fifth preset distance L5, a weak elasticity region is formed by the region between the fifth preset distance L5 and the first connecting section, and the ratio of the fifth preset distance L5 to the distance L is greater than or equal to 0.25 and less than or equal to 0.5; and/or the vertex deviates from the side where the second connecting section is located by a sixth preset distance L6, the region between the sixth preset distance L6 and the second connecting section forms a weak elastic region, and the ratio of the sixth preset distance L6 to the distance L is greater than or equal to 0.25 and less than or equal to 0.5.

Furthermore, the elastic material of the elastic maximum area and the elastic change areas are different; or the elastic materials of the elastic maximum area and the elastic variable areas are the same, the arch-shaped section is provided with patterns, and at least one of the shapes, the heights and the arrangement density of the patterns in the elastic maximum area and the elastic variable areas are different.

Furthermore, the elastic materials of the maximum elastic area and the elastic change areas are the same, the greater the thickness of the diaphragm edge is, the greater the elasticity of the diaphragm edge is, and the greater the thickness of the arch section in the maximum elastic area is than the thickness of the arch section in the elastic change areas.

By applying the technical scheme of the invention, the vibrating diaphragm folding ring comprises a first connecting section, an arch section and a second connecting section which are sequentially connected from outside to inside, the elasticity of the vertex of the arch section is the maximum, and the elasticity of the arch section is reduced from the vertex to the inside and the outside, wherein the inside refers to one side of the vibrating diaphragm folding ring close to the center of the vibrating diaphragm folding ring, and the outside refers to one side of the vibrating diaphragm folding ring far away from the center of the vibrating diaphragm folding ring.

Set to the biggest through the elasticity of rolling over the ring with the vibrating diaphragm in the summit department of the arch section of vibrating diaphragm book ring, and reduce to both sides elasticity from the summit, the vibrating diaphragm rolls over the ring and rolls over the elasticity increase of the both sides of ring under the effect is rolled over to the vibrating diaphragm to marginal glue when the thermal effect that receives the voice coil loudspeaker voice coil and amplitude are great for the vibrating diaphragm rolls over the elasticity of ring and tends to the same. While the elasticity at the apex of the arch is less affected by the thermal effect and amplitude of the voice coil. The elasticity of the arch section along the sides away from the apex is greatly affected by the thermal effect and amplitude of the voice coil. Therefore, the elasticity of the arch section is reduced from the top point to the inner side and the outer side, so that the Kms curve of the obtained system tends to be flat, and the problem that the loudspeaker system obtains poor total harmonic distortion performance is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram illustrating the overall structure of a diaphragm edge of an alternative embodiment of the present invention; and

FIG. 2 shows Kms curves (solid line) for the diaphragm flexures themselves and Kms (dashed line) for the system target of the present invention;

FIG. 3 shows a Kms plot of the diaphragm edge of the present invention by itself;

FIG. 4 is a schematic diagram illustrating the thickness relationship of each point of a diaphragm edge in the first embodiment;

FIG. 5 is a schematic structural diagram illustrating a pattern on a diaphragm edge in the third embodiment;

fig. 6 shows a schematic structural diagram of another pattern on the diaphragm edge in the third embodiment.

Wherein the figures include the following reference numerals:

10. a first connection section; 20. an arch section; 21. a vertex; 30. a second connection section.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless specified to the contrary, use of the terms of orientation such as "upper, lower, top, bottom" or the like, generally refer to the orientation as shown in the drawings, or to the component itself in a vertical, perpendicular, or gravitational orientation; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

The invention provides a vibrating diaphragm corrugated rim, aiming at solving the problem that a loudspeaker system in the prior art obtains poor total harmonic distortion performance.

As shown in fig. 1, the diaphragm edge includes a first connecting section 10, an arch section 20, and a second connecting section 30, which are sequentially connected from outside to inside, and the elasticity of the vertex 21 of the arch section 20 is the largest, and the elasticity of the arch section 20 is reduced from the vertex 21 to the inside and outside sides, wherein the inside is the side of the diaphragm edge close to the center of the diaphragm edge, and the outside is the side of the diaphragm edge far from the center of the diaphragm edge.

Set to the biggest through the elasticity that rolls over the ring with the vibrating diaphragm in the summit 21 department of the arch-shaped section 20 that the vibrating diaphragm rolled over the ring, and reduce to both sides elasticity from summit 21 for the vibrating diaphragm rolls over the ring and receive the thermal effect of voice coil loudspeaker voice coil and edge glue when the amplitude is great and to the vibrating diaphragm roll over the elastic increase of the both sides that the ring was rolled over to the vibrating diaphragm under the restraint effect, makes the elasticity that the vibrating diaphragm rolled over the ring tend to the same. While the elasticity at the apex of the arch 20 is less affected by the thermal effects and amplitude of the voice coil. The elasticity of the arch 20 along the sides remote from the apex 21 is greatly affected by the thermal effect and amplitude of the voice coil. Therefore, the elasticity of the arch section 20 is reduced from the vertex 21 to the inner side and the outer side, so that the Kms curve of the obtained system tends to be flat, and the problem that the loudspeaker system obtains poor total harmonic distortion performance is solved.

Alternatively, the elasticity of the arch segment 20 is symmetrically distributed with respect to the apex 21. The elasticity is greatest at the apex 21 and decreases on both sides of the apex. When the elasticity of the arch section 20 is consistent in the whole range, the Kms curve obtained by the influence of the thermal effect and the amplitude of the voice coil on the diaphragm corrugated rim is symmetrically distributed by taking the Kms at the vertex 21 as a reference, so that the elasticity of the arch section 20 is set to be symmetrical, the obtained Kms curve tends to be straight, and better total harmonic distortion performance is obtained.

Specifically, the arch segment 20 includes a maximum elastic region and a plurality of elastic change regions located on the inner side and the outer side of the maximum elastic region, the first predetermined distance L1 is deviated from the vertex 21 to the side where the first connecting segment 10 is located, the second predetermined distance L2 is deviated from the vertex 21 to the side where the second connecting segment 30 is located, and the region between the first predetermined distance L1 and the second predetermined distance L2 constitutes the maximum elastic region. The elasticity of the elastic change areas is smaller than that of the maximum elasticity area, so that the total harmonic distortion of the system can be reduced to obtain better sound quality. Since the influence of the thermal effect and the amplitude of the voice coil is small in a section of the region at the vertex 21 of the corrugated rim of the diaphragm, the section of the region is set to be the region with the maximum elasticity, and the influence on the Kms curve of the system is small.

Optionally, the first preset distance L1 is equal to the second preset distance L2, and a ratio of the first preset distance L1 to the distance L between the first connecting section 10 and the second connecting section 30 is greater than or equal to 0.08 and less than or equal to 0.125. The first predetermined distance L1 is equal to the second predetermined distance L2, i.e. the vertex 21 is the center and extends the same distance to the inside and outside to form the elastic maximum area. The elastic maximum area occupies between 16% and 25% of the entire arch segment 20.

In the present embodiment, the ratio of the first predetermined distance L1 to the distance L is 0.1. That is, the elastic maximum area is one fifth of the total arcuate segment 20.

In addition, the elasticity variation region adjacent to the elasticity maximum region among the plurality of elasticity variation regions is a second-strength region, and the ratio of the elasticity of the second-strength region to the elasticity of the elasticity maximum region is 0.8 or more and 0.95 or less. The effect that the time strong region received the heat effect and the amplitude of voice coil loudspeaker voice coil is bigger than the influence that the elasticity is the biggest region received the heat effect and the amplitude of voice coil loudspeaker voice coil, so through reducing the elasticity in time strong region so that the vibrating diaphragm is buckled and is receiving the influence back of the heat effect and the amplitude of voice coil loudspeaker voice coil for the Kms curve of system tends to straight at elasticity maximum region and time strong region department, and then obtains better total harmonic distortion performance. Whereas the Kms curve obtained when the elasticity of the second most elastic region is reduced to between 80% and 95% of the maximum elastic region is relatively flat.

Optionally, the vertex 21 deviates from the side where the first connection segment 10 is located by a third preset distance L3, a region between the third preset distance L3 and the first preset distance L1 constitutes a secondary strong region, the third preset distance L3 is greater than the first preset distance L1, a ratio of the third preset distance L3 to the distance L is greater than or equal to 0.125 and less than or equal to 0.25, the vertex 21 deviates from the side where the second connection segment 30 is located by a fourth preset distance L4, a region between the fourth preset distance L4 and the second preset distance L2 constitutes a secondary strong region, the fourth preset distance L4 is greater than the second preset distance L2, and a ratio of the fourth preset distance L4 to the distance L is greater than or equal to 0.125 and less than or equal to 0.25. Next to the elastic maximum region is a second strong region, and the second strong regions are distributed on the inner and outer sides of the elastic maximum region. Or the second strongest region is located between a region located at a distance from the vertex 21 greater than the first predetermined distance L1 and equal to or less than the third predetermined distance L3, and a region located at a distance from the vertex 21 greater than the second predetermined distance L2 and equal to or less than the fourth predetermined distance L4.

In the present embodiment, the third preset distance L3 is equal to the fourth preset distance L4. In the present embodiment, the third predetermined distance L3 is equal to the fourth predetermined distance L4, that is, the size of the sub-strong region between the vertex 21 and the first connecting section 10 is equal to that of the sub-strong region between the vertex 21 and the second connecting section 30, which facilitates the manufacturing of the diaphragm edge and can obtain better total harmonic distortion performance.

Specifically, the elastic change region adjacent to the first connection segment 10 and/or the second connection segment 30 among the plurality of elastic change regions is a weak elastic region, and the ratio of the elasticity of the weak elastic region to the elasticity of the region having the largest elasticity is 0.6 or more and 0.95 or less. That is to say that the region of elasticity change between the second strongest region and the first and second connecting sections 10, 30 is a region of weak elasticity. While the elasticity of the less elastic region is between 60% and 95% of the elasticity of the most elastic region. Therefore, the Kms curve of the system tends to be flat in the elastic maximum region, the second-strong region and the weak elastic region, and better total harmonic distortion performance can be obtained.

Optionally, the vertex 21 deviates from the side of the first connecting section 10 by a fifth preset distance L5, the region between the fifth preset distance L5 and the first connecting section 10 forms a weak elastic region, and the ratio of the fifth preset distance L5 to the distance L is greater than or equal to 0.25 and less than or equal to 0.5; and/or the second connecting section 30 deviates from the vertex 21 by a sixth preset distance L6 towards the side where the second connecting section 30 is located, the region between the sixth preset distance L6 and the second connecting section 30 forms a weak elastic region, and the ratio of the sixth preset distance L6 to the distance L is greater than or equal to 0.25 and less than or equal to 0.5. The regions with weak elasticity are located next to the second strongest region, and the regions with weak elasticity are distributed on the inner side and the outer side of the region with the largest elasticity. Or the second strongest region is located between a region located at a distance from the vertex 21 greater than the third predetermined distance L3 and equal to or less than the fifth predetermined distance L5, and a region located at a distance from the vertex 21 greater than the fourth predetermined distance L4 and equal to or less than the sixth predetermined distance L6.

In the present embodiment, the fifth preset distance L5 is equal to the sixth preset distance L6. In the present embodiment, the fifth predetermined distance L5 is equal to the sixth predetermined distance L6, that is, the size of the weak elastic region between the vertex 21 and the first connecting section 10 is equal to that of the weak elastic region between the vertex 21 and the second connecting section 30, which facilitates the manufacturing of the diaphragm edge and can obtain better total harmonic distortion performance.

As shown in fig. 2, the Kms curve of the diaphragm edge decreases from the peak to the two sides, the curve has a curve characteristic of bending downward, the reciprocal of the function curve is always less than 1, and the peak area corresponds to the area with the maximum elasticity.

As shown in fig. 3, the Kms curve of the diaphragm edge extends from the peak position to two sides, and any one side is in the range of 0-33.3% of the rated power amplitude, the Kms variation interval is between 80% and 95%, and is in the range of 33.3% to 66.7% of the rated power amplitude, and the Kms variation interval is between 60% and 95%.