CN218603637U - Vibrating diaphragm and miniature loudspeaker - Google Patents
Vibrating diaphragm and miniature loudspeaker Download PDFInfo
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- CN218603637U CN218603637U CN202220970367.6U CN202220970367U CN218603637U CN 218603637 U CN218603637 U CN 218603637U CN 202220970367 U CN202220970367 U CN 202220970367U CN 218603637 U CN218603637 U CN 218603637U
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Abstract
The utility model discloses a vibrating diaphragm, including consecutive in-connection portion, book ring portion and outer connecting portion, book ring portion is including consecutive first segmental arc, second segmental arc and third segmental arc, first segmental arc links to each other with in-connection portion, the third segmental arc links to each other with outer connecting portion, first segmental arc, the crooked direction of second segmental arc and third segmental arc is the same, and the distance between the mid point of the one end that first segmental arc and in-connection portion link to each other and second segmental arc is not equal to the distance between the mid point of the one end that third segmental arc and outer connecting portion link to each other and second segmental arc. Also discloses a micro loudspeaker comprising the diaphragm. The vibrating diaphragm of installation adopts the dog-ear portion that has the continuous arc structure of three-section in the miniature speaker to the stress dispersion that produces when making the vibrating diaphragm vibration, and then promote the intensity and the rigidity of vibrating diaphragm, go up the symmetry of amplitude and lower amplitude when improving the vibrating diaphragm vibration, and then reduce miniature speaker's distortion and promote miniature speaker acoustic performance.
Description
Technical Field
The utility model relates to an electroacoustic conversion equipment technical field especially relates to a vibrating diaphragm and have miniature speaker of this vibrating diaphragm.
Background
The micro-speaker is an important acoustic component in various electronic devices, and is widely applied to electronic products such as mobile phones, smart watches, tablet computers, hearing aids and the like. The miniature loudspeaker produces sound through vibration of the vibrating diaphragm, and the rigidity, the strength and the like of the vibrating diaphragm can directly influence the acoustic performance of the miniature loudspeaker.
As shown in fig. 1 to 4, a diaphragm used in a conventional micro-speaker generally includes a corrugated rim 6, the corrugated rim 6 is generally a symmetrical arc, and although the diaphragm adopting such a corrugated rim 6 structure is convenient to form, the diaphragm has poor rigidity and strength, and is prone to cause distortion of the micro-speaker due to the symmetry of the upper amplitude portion and the lower amplitude portion during vibration.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a diaphragm having high strength and rigidity and a micro-speaker having the diaphragm are provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a vibrating diaphragm, including consecutive in-connection portion, roll over ring portion and outer connecting portion, roll over ring portion including consecutive first segmental arc, second segmental arc and third segmental arc, first segmental arc links to each other with in-connection portion, the third segmental arc links to each other with outer connecting portion, first segmental arc, the crooked direction of second segmental arc and third segmental arc is the same, and the distance between the midpoint of the one end that first segmental arc and in-connection portion link to each other and second segmental arc is not equal to the distance between the midpoint of the one end that third segmental arc and outer connecting portion link to each other and second segmental arc.
Further, the length of the first arc-shaped section is 2.00-4.00 times of the length of the second arc-shaped section.
Further, the length of the third arc-shaped section is 2.00-4.00 times of the length of the second arc-shaped section.
Furthermore, the distance between the end of the first arc-shaped section connected with the inner connecting part and the midpoint of the second arc-shaped section is greater than the distance between the end of the third arc-shaped section connected with the outer connecting part and the midpoint of the second arc-shaped section.
Further, the distance between the middle point of the second arc-shaped section and the middle point of the folded ring part is 0.10-0.15mm.
Further, the distance between the end of the first arc-shaped section connected with the inner connecting part and the midpoint of the second arc-shaped section is smaller than the distance between the end of the third arc-shaped section connected with the outer connecting part and the midpoint of the second arc-shaped section.
Further, the distance between the middle point of the second arc-shaped section and the middle point of the folded ring part is 0.10-0.20mm.
Furthermore, a plurality of first decorative patterns are arranged on the first arc-shaped section, a plurality of second decorative patterns are arranged on the third arc-shaped section, and the first decorative patterns and the second decorative patterns are arranged in a staggered mode.
Furthermore, the ring folding part is a rounded rectangle, the first patterns are close to the four corners of the first arc-shaped section, and the second patterns are close to the four corners of the third arc-shaped section.
In order to solve the technical problem, the utility model discloses still adopt following technical scheme: the micro loudspeaker comprises the diaphragm.
The beneficial effects of the utility model reside in that: the utility model provides a vibrating diaphragm of installation adopts the book ring portion that has the continuous arc structure of three-section in the micro loudspeaker, roll over first segmental arc in the ring portion, second segmental arc and third segmental arc are crooked to same direction, and distance between the mid point of the one end that first segmental arc and in-connection portion link to each other and second segmental arc is not equal to the distance between the mid point of one end that third segmental arc and outer joint portion link to each other and second segmental arc, make the mid point of second segmental arc to the direction that is close to in-connection portion or the direction skew that is close to outer joint portion, so that the stress dispersion that produces when the vibrating diaphragm vibrates, and then promote the intensity and the rigidity of vibrating diaphragm, go up the symmetry of amplitude and lower amplitude when improving the vibrating diaphragm vibration, and then reduce micro loudspeaker's distortion and promote micro acoustics speaker performance.
Drawings
Fig. 1 is a schematic structural diagram of a diaphragm of a micro-speaker in the prior art;
FIG. 2 is a graph of amplitude testing of a micro-speaker according to the prior art;
FIG. 3 is a Bl plot of a micro-speaker of the prior art;
FIG. 4 is a Kms plot for a prior art micro-speaker;
fig. 5 is a schematic structural view of a diaphragm in a micro speaker according to a first embodiment of the present invention;
fig. 6 is a top view of a diaphragm in a micro speaker according to a first embodiment of the present invention;
fig. 7 is an amplitude test chart of the micro-speaker according to the first embodiment of the present invention;
fig. 8 is a schematic structural view of a diaphragm in a micro speaker according to a second embodiment of the present invention;
fig. 9 is a top view of a diaphragm in a micro speaker according to a second embodiment of the present invention;
fig. 10 is a Bl graph of a micro-speaker according to a second embodiment of the present invention;
fig. 11 is a Kms graph of a micro-speaker according to a second embodiment of the present invention;
fig. 12 is a total harmonic distortion test chart of the micro-speaker in the prior art and the micro-speaker in the second embodiment.
Description of reference numerals:
1. a folded ring part; 11. a first arcuate segment; 12. a second arcuate segment; 13. a third arc segment; 2. an inner connection portion; 3. an outer connecting portion; 4. a first pattern; 5. a second pattern; 6. and (5) folding the ring.
Detailed Description
In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
Referring to fig. 5 to 11, a diaphragm includes an inner connection portion 2, a ring-folded portion 1 and an outer connection portion 3, which are sequentially connected, the ring-folded portion 1 includes a first arc-shaped section 11, a second arc-shaped section 12 and a third arc-shaped section 13, which are sequentially connected, the first arc-shaped section 11 is connected to the inner connection portion 2, the third arc-shaped section 13 is connected to the outer connection portion 3, the bending directions of the first arc-shaped section 11, the second arc-shaped section 12 and the third arc-shaped section 13 are the same, and the distance between the end of the first arc-shaped section 11 connected to the inner connection portion 2 and the midpoint of the second arc-shaped section 12 is not equal to the distance between the end of the third arc-shaped section 13 connected to the outer connection portion 3 and the midpoint of the second arc-shaped section 12.
From the above description, the beneficial effects of the utility model reside in that: the utility model provides a vibrating diaphragm of installation adopts the book ring portion 1 that has the continuous arc structure of three-section to the stress dispersion that produces during messenger's vibrating diaphragm vibration, and then promotes the intensity and the rigidity of vibrating diaphragm, goes up the symmetry of amplitude and lower amplitude when improving the vibrating diaphragm vibration, and then reduces micro-speaker's distortion and promotes micro-speaker acoustic performance.
Further, the length of the first arc-shaped section 11 is 2.00 to 4.00 times the length of the second arc-shaped section 12.
Further, the length of the third arc-shaped section 13 is 2.00 to 4.00 times the length of the second arc-shaped section 12.
Further, the distance between the end of the first arc-shaped segment 11 connected to the inner connecting portion 2 and the midpoint of the second arc-shaped segment 12 is greater than the distance between the end of the third arc-shaped segment 13 connected to the outer connecting portion 3 and the midpoint of the second arc-shaped segment 12.
As can be seen from the above description, the distance between the end of the first arc-shaped segment 11 connected to the inner connecting portion 2 and the midpoint of the second arc-shaped segment 12 is set to be greater than the distance between the end of the third arc-shaped segment 13 connected to the outer connecting portion 3 and the midpoint of the second arc-shaped segment 12, so that the midpoint of the second arc-shaped segment 12 is shifted toward the direction close to the outer connecting portion 3, thereby dispersing the stress generated when the diaphragm vibrates and enhancing the rigidity of the baffle portion 1.
Further, the distance between the middle point of the second arc-shaped section 12 and the middle point of the baffle ring part 1 is 0.10-0.15mm.
Further, the distance between the end of the first arc-shaped segment 11 connected to the inner connecting portion 2 and the midpoint of the second arc-shaped segment 12 is smaller than the distance between the end of the third arc-shaped segment 13 connected to the outer connecting portion 3 and the midpoint of the second arc-shaped segment 12.
As can be seen from the above description, the distance between the end of the first arc-shaped segment 11 connected to the inner connection portion 2 and the middle point of the second arc-shaped segment 12 is set to be smaller than the distance between the end of the third arc-shaped segment 13 connected to the outer connection portion 3 and the middle point of the second arc-shaped segment 12, and at this time, the middle point of the second arc-shaped segment 12 is shifted toward the direction close to the inner connection portion 2, so as to increase the rigidity of the baffle portion 1 and make the upper amplitude and the lower amplitude of the diaphragm symmetrical.
Further, the distance between the middle point of the second arc-shaped section 12 and the middle point of the baffle ring part 1 is 0.10-0.20mm.
Furthermore, a plurality of first patterns 4 are arranged on the first arc-shaped section 11, a plurality of second patterns 5 are arranged on the third arc-shaped section 13, and the first patterns 4 and the second patterns 5 are arranged in a staggered manner.
As can be seen from the above description, the first patterns 4 disposed on the first arc-shaped segment 11 and the second patterns 5 disposed on the third arc-shaped segment 13 are both used to further increase the strength of the bending part 1, and the first patterns 4 and the second patterns 5 are alternately disposed to make the vibration of the diaphragm more balanced.
Further, the ring-folded part 1 is a rounded rectangle, the first patterns 4 are arranged near four corners of the first arc-shaped section 11, and the second patterns 5 are arranged near four corners of the third arc-shaped section 13.
As can be seen from the above description, the first patterns 4 are disposed at the four corners of the first arc-shaped section 11, and the second patterns 5 are disposed at the four corners of the third arc-shaped section 13, so as to reinforce the weak positions of the first arc-shaped section 11 and the third arc-shaped section 13, and enhance the overall strength of the diaphragm.
A micro speaker comprises the diaphragm.
Example one
Referring to fig. 2, 5 to 7, a first embodiment of the present invention is: a micro speaker is installed in electronic products such as a mobile phone, a smart watch, a tablet personal computer and a hearing aid and is used for converting an electric signal into sound. The micro-speaker includes a diaphragm.
As shown in fig. 5, the vibrating diaphragm includes interior connecting portion 2, the ring portion 1 and the outer joint portion 3 that link to each other in proper order from inside to outside, interior connecting portion 2 with the 3 parallel and level of outer joint portion, the ring portion 1 that rolls over includes consecutive first segmental arc 11, second segmental arc 12 and third segmental arc 13, wherein first segmental arc 11 is kept away from the one end of second segmental arc 12 with interior connecting portion 2 links to each other, third segmental arc 13 is kept away from the one end of second segmental arc 12 with outer joint portion 3 links to each other, first segmental arc 11 second segmental arc 12 reaches third segmental arc 13 is respectively to same direction bending.
Specifically, in this embodiment, a distance between one end of the first arc-shaped section 11 connected to the inner connection portion 2 and a midpoint of the second arc-shaped section 12 is greater than a distance between one end of the third arc-shaped section 13 connected to the outer connection portion 3 and a midpoint of the second arc-shaped section 12, that is, the midpoint of the second arc-shaped section 12 is shifted toward a direction close to the outer connection portion 3, so that stress generated on the loop portion 1 when the diaphragm vibrates is dispersed, the strength and rigidity of the diaphragm are improved, symmetry between an upper amplitude and a lower amplitude when the diaphragm vibrates is improved, and distortion of the micro-speaker is reduced and acoustic performance of the micro-speaker is improved.
As shown in fig. 6, the length of the first arc-shaped segment 11 is 2.00-4.00 times of the length of the second arc-shaped segment 12, the length of the third arc-shaped segment 13 is 2.00-4.00 times of the length of the second arc-shaped segment 12, and the horizontal distance between the midpoint of the second arc-shaped segment 12 and the midpoint of the folded ring portion 1 is 0.10-0.15mm, so that the stress on the folded ring portion 1 during the vibration of the diaphragm is uniformly dispersed into the first arc-shaped segment 11, the second arc-shaped segment 12 and the third arc-shaped segment 13 by designing the size and shape of the first arc-shaped segment 11, the second arc-shaped segment 12 and the third arc-shaped segment 13 in the folded ring portion 1.
Referring to fig. 5 and 6, in order to further enhance the strength of the annular folded portion 1, a plurality of first patterns 4 are disposed on the first arc-shaped section 11, a plurality of second patterns 5 are disposed on the third arc-shaped section 13, the first patterns 4 and the second patterns 5 are alternately disposed, and the first patterns 4 and the second patterns 5 disposed on the annular folded portion 1 can make the vibration of the diaphragm more balanced, so as to ensure that the upper amplitude and the lower amplitude of the diaphragm are symmetrical.
In detail, in this embodiment, the folded ring portion 1 is a rounded rectangle, and the first decorative pattern 4 is close to the four corners of the first arc-shaped section 11, the second decorative pattern 5 is close to the four corners of the third arc-shaped section 13, and will the first decorative pattern 4 and the second decorative pattern 5 are respectively arranged in the positions where the first arc-shaped section 11 and the third arc-shaped section 13 are weak, so as to facilitate further improvement of the strength of the diaphragm. And 11 patterns are arranged on each corner of the first arc-shaped section 11, and 12 patterns are arranged on each corner of the third arc-shaped section 13.
Referring to fig. 2 and fig. 7, in the micro-speaker provided in this embodiment, the diaphragm has a larger upper amplitude and a smaller lower amplitude than a diaphragm in a conventional micro-speaker, so that the upper amplitude and the lower amplitude of the diaphragm are symmetrical, distortion of the micro-speaker is reduced, risk of other parts in the micro-speaker being beaten by the diaphragm is reduced, and reliability is improved.
Example two
Referring to fig. 3 and 4, and fig. 8 to 11, another technical solution is proposed in the second embodiment of the present invention based on the first embodiment, and the difference from the first embodiment is only the structure of the folded ring portion 1.
As shown in fig. 8 and 9, in this embodiment, a distance between one end of the first arc-shaped section 11 connected to the inner connecting portion 2 and a midpoint of the second arc-shaped section 12 is smaller than a distance between one end of the third arc-shaped section 13 connected to the outer connecting portion 3 and a midpoint of the second arc-shaped section 12, that is, the midpoint of the second arc-shaped section 12 is shifted toward a direction close to the inner connecting portion 2, so that stress generated on the loop portion 1 when the diaphragm vibrates is dispersed, strength and rigidity of the diaphragm are improved, symmetry between an upper amplitude and a lower amplitude when the diaphragm vibrates is improved, and distortion of the micro-speaker is reduced and acoustic performance of the micro-speaker is improved.
In detail, the horizontal distance between the middle point of the second arc-shaped segment 12 and the middle point of the baffle ring part 1 is 0.10-0.20mm.
As shown in fig. 3 and 4, fig. 10 and 11, the diaphragm in the micro-speaker provided in this embodiment is more symmetrical than the curve of the diaphragm Bl in the conventional micro-speaker, and the Kms curve is significantly flatter, and the total harmonic distortion of the micro-speaker in this embodiment is reduced by 4.2% compared with that of the micro-speaker in the prior art, so that the micro-speaker provided in this embodiment has better acoustic performance.
To sum up, the utility model provides a vibrating diaphragm of installation has the book ring portion of constituteing by the arc that the three-section links to each other among the miniature speaker, and link into the first segmental arc of book ring portion, second segmental arc and third segmental arc are crooked to same direction, and distance between the midpoint of the one end that first segmental arc and interior connecting portion link to each other and second segmental arc is not equal to the distance between the midpoint of one end that third segmental arc and outer connecting portion link to each other and second segmental arc, make the midpoint of second segmental arc to the direction that is close to interior connecting portion or the direction skew that is close to outer connecting portion, the stress dispersion that produces in the book ring portion when designing messenger's vibrating diaphragm vibration through the shape and the size of fifty percent discount ring portion, and then promote intensity and the rigidity of vibrating diaphragm, reduce down the amplitude when increasing the last amplitude of vibrating diaphragm, the symmetry of last amplitude and lower amplitude when improving the vibrating diaphragm vibration, and then reduce miniature speaker's distortion and promote miniature speaker acoustic performance.
The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a vibrating diaphragm, includes consecutive in-connection portion, turns over ring portion and outer joint portion, its characterized in that: the ring folding portion comprises a first arc section, a second arc section and a third arc section which are sequentially connected, the first arc section is connected with the inner connecting portion, the third arc section is connected with the outer connecting portion, the bending directions of the first arc section, the second arc section and the third arc section are the same, and the distance between one end, connected with the inner connecting portion, of the first arc section and the midpoint of the second arc section is not equal to the distance between one end, connected with the outer connecting portion, of the third arc section and the midpoint of the second arc section.
2. The diaphragm of claim 1, wherein: the length of the first arcuate segment is 2.00-4.00 times the length of the second arcuate segment.
3. The diaphragm of claim 1, wherein: the length of the third arcuate segment is 2.00-4.00 times the length of the second arcuate segment.
4. The diaphragm of claim 1, wherein: the distance between one end of the first arc-shaped section connected with the inner connecting part and the midpoint of the second arc-shaped section is greater than the distance between one end of the third arc-shaped section connected with the outer connecting part and the midpoint of the second arc-shaped section.
5. The diaphragm of claim 4, wherein: the distance between the middle point of the second arc-shaped section and the middle point of the folded ring part is 0.10-0.15mm.
6. The diaphragm of claim 1, wherein: the distance between one end of the first arc-shaped section connected with the inner connecting part and the midpoint of the second arc-shaped section is smaller than the distance between one end of the third arc-shaped section connected with the outer connecting part and the midpoint of the second arc-shaped section.
7. The diaphragm of claim 6, wherein: the distance between the middle point of the second arc-shaped section and the middle point of the folded ring part is 0.10-0.20mm.
8. The diaphragm of claim 1, wherein: the first arc-shaped section is provided with a plurality of first patterns, the third arc-shaped section is provided with a plurality of second patterns, and the first patterns and the second patterns are arranged in a staggered mode.
9. The diaphragm of claim 8, wherein: the ring folding part is a rounded rectangle, the first patterns are close to the four corners of the first arc-shaped section, and the second patterns are close to the four corners of the third arc-shaped section.
10. Miniature speaker, its characterized in that: comprising a diaphragm according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220970367.6U CN218603637U (en) | 2022-04-25 | 2022-04-25 | Vibrating diaphragm and miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220970367.6U CN218603637U (en) | 2022-04-25 | 2022-04-25 | Vibrating diaphragm and miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218603637U true CN218603637U (en) | 2023-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220970367.6U Active CN218603637U (en) | 2022-04-25 | 2022-04-25 | Vibrating diaphragm and miniature loudspeaker |
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| Country | Link |
|---|---|
| CN (1) | CN218603637U (en) |
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- 2022-04-25 CN CN202220970367.6U patent/CN218603637U/en active Active
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