CN208241876U - A kind of vibrating diaphragm and acoustical generator - Google Patents
A kind of vibrating diaphragm and acoustical generator Download PDFInfo
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- CN208241876U CN208241876U CN201820779238.2U CN201820779238U CN208241876U CN 208241876 U CN208241876 U CN 208241876U CN 201820779238 U CN201820779238 U CN 201820779238U CN 208241876 U CN208241876 U CN 208241876U
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- 230000000994 depressogenic effect Effects 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000010355 oscillation Effects 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 11
- 238000009826 distribution Methods 0.000 description 7
- 230000010287 polarization Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000001755 vocal effect Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
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Abstract
The utility model embodiment provides a kind of vibrating diaphragm, and the position of the emission center of any two pattern group on each corner of the vibrating diaphragm is different or the diffusion mode of any two pattern group is different.To pass through the pattern group of the arrangement of setting multiple groups different type decorative pattern or different emission centers position, there is rocking vibration in big displacement vibration in the vibrating diaphragm for avoiding single type decorative pattern, acoustical behavior is poor, fold easily occurs in corner, lead to that reliability is lower and vibrating diaphragm is pliable lower, the problem for causing acoustical generator sensitivity lower.The diaphragm oscillations are steady, listen sound quality high, pliable height, product high sensitivity, and are less prone to fold, and fatigue resistance is strong, and the distortion of acoustical generator higher order harmonics is low, and reliability is preferable.
Description
Technical Field
The utility model relates to an electroacoustic field. And more particularly, to a diaphragm and a sounder.
Background
The sounder module is an important acoustic component of portable electronic equipment, is used for completing conversion between an electric signal and a sound signal, and is an energy conversion device. Existing sounder modules typically comprise a housing in which a vibration system and a magnetic circuit system are housed. Wherein, vibration system is including fixed vibrating diaphragm and voice coil loudspeaker voice coil together, and magnetic circuit includes the magnetic yoke and fixes magnet and the china department on this magnetic yoke in proper order, and the vibrating diaphragm is including the central part that is located central authorities, connects the book ring portion in the central part outside to and with the integrative fixed part that sets up of book ring portion, fixed part and vocal ware shell combine fixedly. The diaphragm is an important part of the sounder and determines the conversion quality of the sounder from electric energy to sound energy. In order to solve the vibration system and easily appear the polarization problem, the line that looses that the voice coil loudspeaker voice coil that arouses by the polarization rubs the magnetic circuit and leads to and the problem that the fold appears at stress concentration's position and leads to the vibrating diaphragm to warp and the membrane to split, prior art generally sets up decorative pattern (being the strengthening rib) on the dog-ear portion of vibrating diaphragm, however, the decorative pattern of the dog-ear portion of current vibrating diaphragm is straight line shape or other single shape usually, and the decorative pattern extends to the opposite side edge by a side edge of dog-ear portion, the vibrating diaphragm of this kind of structure can produce following defect when the vibration: the vibrating diaphragm can generate swinging vibration when vibrating in large displacement, the vibration is not stable, and noise is easy to generate; the flexibility of the vibrating diaphragm is low, so that the sensitivity of the sounder is low and the acoustic performance is poor; the fold easily appears in diaphragm four corners portion when the vibration, leads to higher harmonic distortion higher, still can make diaphragm edge portion fatigue simultaneously, is difficult for passing through reliability test.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems that the smoothness of a single pattern on a folded ring part of a vibrating diaphragm is poor, the stability is poor, wrinkles are prone to occurring and the like, the embodiment of the utility model provides a vibrating diaphragm which comprises a central part positioned in the center, a folded ring part connected to the outer side of the central part and a fixing part integrally arranged with the folded ring part, wherein the folded ring part comprises straight edge parts and corner parts connected between adjacent straight edge parts, a plurality of first patterns are arranged on each corner part, and the first patterns are formed into a plurality of radially distributed pattern groups;
the positions of the radial centers of any two of the pattern groups on each corner are different from each other, or the divergence patterns of any two of the pattern groups are different from each other.
In a preferred embodiment, the pattern group includes a plurality of first pattern groups having a radial center on the central portion, or a plurality of second pattern groups having a radial center on the fixing portion or outside the diaphragm.
In another preferred embodiment, the pattern sets include at least one first pattern set having a radial center on the central portion and at least one second pattern set having a radial center on the fixing portion or on the outer side of the diaphragm.
In a further preferred embodiment, the plurality of first pattern groups or the plurality of second pattern groups are alternately arranged in the circumferential direction of the annular folding portion.
In a further preferred embodiment, the first pattern groups and the second pattern groups are alternately arranged along the circumferential direction of the annular folding part.
In a further preferred embodiment, the first pattern group comprises two portions divided circumferentially along the corrugated rim portion, the second pattern group being interposed between the two portions; or,
the second pattern group comprises two parts which are divided along the circumferential direction of the corrugated ring part, and the first pattern group is inserted between the two parts.
In a further preferred embodiment, a plurality of second patterns are arranged on the straight edge portion, and the first patterns and the second patterns are different in shape.
In a further preferred embodiment, the plurality of groups of patterns diverge in a manner comprising: spline-shaped divergence and involute linear divergence.
In still another preferred embodiment, the first pattern is formed by a surface of the collar portion being depressed in the vibration direction.
The embodiment of the utility model provides a still provide a sounder, including vibration system, vibration system include as above vibrating diaphragm and with the voice coil loudspeaker voice coil that the vibrating diaphragm combines.
The utility model has the advantages as follows:
the utility model provides a vibrating diaphragm and vocal ware is arranged or the decorative pattern group that different radiation central point put through setting up multiunit different grade type decorative pattern to the vibrating diaphragm of having avoided single type decorative pattern appears swaing the vibration when big displacement vibration, and acoustic performance is poor, bight easily appears the fold, leads to the reliability lower and the vibrating diaphragm compliance lower, leads to the lower problem of vocal ware sensitivity. The vibrating diaphragm has the advantages of stable vibration, high listening quality, high smoothness, high product sensitivity, difficult wrinkle occurrence, strong fatigue resistance, low higher harmonic frequency distortion of the sounder and better reliability.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 shows a schematic view of a prior art sounder.
Fig. 2 shows one of the top views of the diaphragm in the embodiment of the present invention.
Fig. 3 shows a second top view of the diaphragm in the embodiment of the present invention.
Detailed Description
Various illustrative embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of the components, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The description of the at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the illustrative embodiments may have different values.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Fig. 1 shows a schematic structural diagram of a sounder in the prior art, where a diaphragm includes a central portion 11 of the diaphragm, a corrugated portion 12 connected to an outer side of the central portion 11, and a fixing portion 13 integrally disposed with the corrugated portion 12, and the fixing portion 13 is fixed to a casing of the sounder.
The vibrating diaphragm includes rectangle vibrating diaphragm or circular vibrating diaphragm etc. and the book of rectangle vibrating diaphragm encircles the portion and includes straight limit portion and the bight of connection between adjacent straight limit portion.
Voice coil 2 can be fixed to the below of vibrating diaphragm, at the during operation, voice coil 2 vibrates from top to bottom in the drive of electricity, drive the vibrating diaphragm vibration, thereby make the vibrating diaphragm vibration sound production, in order to solve the polarization of vibrating diaphragm, deformation, the membrane splits scheduling problem, prior art generally sets up decorative pattern (not shown in the figure) on the book ring portion of vibrating diaphragm, the decorative pattern is sunken to form along the direction of vibration by the surface of book ring portion, for example if in figure 1, the decorative pattern can undercut or undercut, need not additionally increase spare part like this, decorative pattern and book ring portion integrated into one piece.
For a rectangular vibrating diaphragm, because the structure of the corner part is different from that of the straight edge part, the stress distribution is completely different during vibration, and the vibrating diaphragm with a single type of pattern is regular in distribution and type, so that a stress concentrated area is easily formed on the corner part during vibration of the vibrating diaphragm, swinging vibration occurs during large-displacement vibration, the acoustic performance is poor, the corner part is easily wrinkled, the reliability is low, the compliance of the vibrating diaphragm is low, and the sensitivity of a sounder is low.
Fig. 2 shows a first top view of the diaphragm in this embodiment, and fig. 3 shows a second top view of the diaphragm in this embodiment. In fig. 2 and 3, a plurality of patterns are provided on each corner portion 121, and the plurality of patterns are formed as a plurality of radially-distributed pattern groups. The positions and the divergence modes of the radiation centers of any two floral groups in the embodiment are different from each other at the same time. The pattern shape of the corner 121 may be arc or linear, which is not repeated herein. Specifically, the pattern group with a as the emission center in fig. 2 diverges in an involute manner, with the center a of a circle as the radiation center and a tangent in a certain direction of a circle as the radiation starting point, and rotates in a radial manner along the circumference of the circle, so that the length of each pattern gradually increases and the interval between each pattern gradually increases, and the pattern group with B as the radiation center in fig. 2 diverges in a spline manner, with a point B as the radiation center in the figure, so that the length of each pattern is equal and the pattern interval is the same. Of course, the present invention is not limited to the two divergent modes.
Of course, in some realizable embodiments, the positions of the radial centers of any two of the fringe sets at each corner are different from each other, but the divergence of any two of the fringe sets is the same. In other implementations, the radial center positions of any two of the fringe sets at each corner are the same, but the divergence patterns of any two of the fringe sets are different from each other. That is, the present invention can be realized as long as one of the above two conditions is satisfied.
It is obvious to a person skilled in the art that the straight edge portion 122 of the diaphragm may also have a pattern, and since the stress distribution of the straight edge portion 122 is different from that of the corner portion 121, it is preferable that the pattern (second pattern) on the straight edge portion 122 has a shape different from that of the pattern (first pattern) of the corner portion 121. Further, the pattern of the straight side portion 122 is more preferably a semicircular pattern (not shown), and the semicircular pattern matches the linear or arc pattern of the corner portion 121 to have more significant effects on polarization of the diaphragm and improvement of the compliance of the straight side portion 122 in the vertical direction.
The vibrating diaphragm in this embodiment is difficult for appearing the region of stress concentration owing to have the decorative pattern of multiple different radiation centers or different distribution types to when making the vibration, stress distribution is even, and the vibration is steady, and the listening quality is high, and the compliance is high, and product sensitivity is high, and difficult the fold that appears, and fatigue resistance is strong, and higher harmonic distortion is low, and the reliability is better.
The pattern of the present invention will be described in detail with reference to fig. 2 and 3.
For convenience of description, the pattern group with the radiation center located on the central portion 11 is defined as a first pattern group, the pattern group with the radiation center located on the fixed portion 13 or on the outer side of the diaphragm is defined as a second pattern group, that is, the radiation center located on the inner side of the folded ring portion is defined as a first pattern group, and the radiation center located on the outer side of the folded ring portion is defined as a second pattern group. In the example shown in fig. 2, the first pattern group is one (with a as the radial center) and the second pattern group is one (with B as the radial center). In the embodiment shown in fig. 3, there are two first tread groups, one spline-diverging (radial center at D) and one involute-diverging (radial center at C).
Further, there may be various combinations of the patterns between each pattern group, a plurality of pattern groups (not limited to the first pattern group or the second pattern group) may be alternately arranged, or may be arranged in sequence, for example, in fig. 2, each corner portion 121 includes a first pattern group and a second pattern group, the first pattern group includes two portions which diverge from each other with the point a as a radial center and with a tangent line with the point a as a center, and the second pattern group is interposed between the two portions of the first pattern group. In fig. 3, two first pattern groups (one divergent in an involute manner and one divergent in a spline manner) are alternately arranged or sequentially arranged along the circumferential direction of the corrugated portion 12.
Of course, in an implementable embodiment, the patterns in the plurality of pattern groups are arranged alternately, for example, when there are a first pattern group and a second pattern group, the patterns in the first pattern group and the patterns in the second pattern group are arranged alternately in the circumferential direction of the corrugated portion 12; the odd-numbered patterns on the folded ring part 12 form at least one first pattern group, and the even-numbered patterns form at least one second pattern group, or the even-numbered patterns on the folded ring part 12 form at least one first pattern group, and the odd-numbered patterns form at least one second pattern group. Of course, the decorative pattern in a plurality of first decorative pattern group or a plurality of second decorative pattern group also can alternate arrangement, the utility model discloses do not give the repeated description.
The above-described pattern may be formed by the surface of the corrugated portion 12 being depressed in the vibration direction of the diaphragm, i.e., upward or downward in fig. 1. In the rectangular diaphragm, four corners 121 are in a central symmetrical structure, so that the stress distribution of each corner 121 is also substantially in a central symmetrical structure, and in order to balance the vibration of the diaphragm, a plurality of pattern groups are arranged on each corner 121 in a central symmetrical structure, and each corner 121 has an equal number of pattern groups which are in an equal type, are in radial central symmetry, and are in radial angular central symmetry. The design can improve the balance of the whole vibrating diaphragm and inhibit polarization. Similarly, the pattern on the straight edge portion 122 is also preferably a central symmetrical structure, so as to avoid the diaphragm polarization caused by the asymmetrical distribution of compliance and stress on the diaphragm bending portion 12 along the center of the central portion 11.
Further, the embodiment of the present invention provides a sounder, which comprises a housing and a vibration system and a magnetic circuit system contained in the housing, wherein the vibration system comprises a vibrating diaphragm and a voice coil combined below the vibrating diaphragm. The magnetic circuit system may be a three-magnetic circuit system or a five-magnetic circuit system including a center magnet and a side magnet, or a three-magnetic circuit system or a five-magnetic circuit system including a center magnet and a side magnetic yoke, the present invention is not limited thereto.
Through the detailed description of the embodiment, the sounder is high in listening quality, high in product sensitivity, low in higher harmonic frequency distortion and good in reliability.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (10)
1. A diaphragm comprises a central part positioned in the center, a folded ring part connected to the outer side of the central part and a fixing part integrally arranged with the folded ring part, wherein the folded ring part comprises straight edge parts and corner parts connected between the adjacent straight edge parts;
the positions of the radial centers of any two of the pattern groups on each corner are different from each other, or the divergence patterns of any two of the pattern groups are different from each other.
2. The diaphragm of claim 1, wherein the pattern groups include a plurality of first pattern groups having a radial center on the central portion, or a plurality of second pattern groups having a radial center on the fixing portion or outside the diaphragm.
3. The diaphragm of claim 1, wherein the pattern groups include at least one first pattern group having a radial center on the central portion and at least one second pattern group having a radial center on the fixing portion or on an outer side of the diaphragm.
4. The diaphragm of claim 2, wherein the first groups or the second groups are alternately arranged along a circumferential direction of the annular portion.
5. The diaphragm of claim 3, wherein the first pattern groups and the second pattern groups are alternately arranged along the circumferential direction of the loop portion.
6. The diaphragm of claim 3, wherein the first pattern group includes two portions divided in a circumferential direction of the edge portion, and the second pattern group is interposed between the two portions; or,
the second pattern group comprises two parts which are divided along the circumferential direction of the corrugated ring part, and the first pattern group is inserted between the two parts.
7. The diaphragm of any one of claims 1 to 6, wherein a plurality of second patterns are disposed on the straight edge portion, and the first patterns and the second patterns have different shapes.
8. The diaphragm of claim 1, wherein the plurality of groups of corrugations diverge in a manner comprising: spline-shaped divergence and involute linear divergence.
9. The diaphragm of claim 1, wherein the first pattern is formed by a surface of the flexure portion being depressed in a vibration direction.
10. A sounder comprising a vibration system comprising a diaphragm according to any of claims 1 to 9 and a voice coil associated with said diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820779238.2U CN208241876U (en) | 2018-05-23 | 2018-05-23 | A kind of vibrating diaphragm and acoustical generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820779238.2U CN208241876U (en) | 2018-05-23 | 2018-05-23 | A kind of vibrating diaphragm and acoustical generator |
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| Publication Number | Publication Date |
|---|---|
| CN208241876U true CN208241876U (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820779238.2U Active CN208241876U (en) | 2018-05-23 | 2018-05-23 | A kind of vibrating diaphragm and acoustical generator |
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| Country | Link |
|---|---|
| CN (1) | CN208241876U (en) |
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- 2018-05-23 CN CN201820779238.2U patent/CN208241876U/en active Active
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