CN213073071U - Vibrating diaphragm and miniature loudspeaker - Google Patents
Vibrating diaphragm and miniature loudspeaker Download PDFInfo
- Publication number
- CN213073071U CN213073071U CN202021295761.1U CN202021295761U CN213073071U CN 213073071 U CN213073071 U CN 213073071U CN 202021295761 U CN202021295761 U CN 202021295761U CN 213073071 U CN213073071 U CN 213073071U
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- vibrating diaphragm
- plane
- ring
- included angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a vibrating diaphragm and miniature speaker, vibrating diaphragm include from inside to outside consecutive interior fixed part, roll over ring portion and outer fixed part, the cross-section of roll over ring portion is trapezoidal. This vibrating diaphragm adopts the anti-cross-section of rolling over the ring design and rolling over ring portion to be trapezoidal, and simple structure, novelty compare with the convex ring portion of rolling over of tradition, and trapezoidal ring portion of rolling over has improved the deformation volume effectively under the condition that does not change overall height to satisfy the demand of vibrating diaphragm, the big vibrating diaphragm of miniature speaker.
Description
Technical Field
The utility model relates to an electroacoustic transducer technical field especially relates to a vibrating diaphragm and miniature speaker.
Background
As a device capable of converting electric energy into acoustic energy, a micro speaker is widely used in microelectronic devices such as smart phones, camcorders, cameras, and notebook computers. As microelectronic devices are becoming thinner and thinner, the height requirements for micro-speakers are also becoming thinner and thinner.
Among the prior art, in order to satisfy the frivolous requirement, micro loudspeaker's vibrating diaphragm adopts the anti-ring structure of rolling over (roll over the ring towards micro loudspeaker inside), in order to satisfy the acoustic performance requirement, the amplitude requirement of vibrating diaphragm is more and more big, and at present, the book ring portion of vibrating diaphragm is generally convex, and there is the problem that the deformation volume is not enough in the convex book ring portion, and this can influence the realization of the big amplitude of vibrating diaphragm.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: a large-amplitude diaphragm and a micro-speaker are provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a vibrating diaphragm, includes interior fixed part, the ring portion of rolling over and outer fixed part that from inside to outside links to each other in proper order, the cross-section of the ring portion of rolling over is trapezoidal.
Furthermore, the edge folding portion comprises a first inclined portion, a plane portion and a second inclined portion which are sequentially connected from inside to outside, an included angle between the first inclined portion and the plane portion is 30-90 degrees, and an included angle between the second inclined portion and the plane portion is 30-90 degrees.
Further, the inner fixing portion is flush with the outer fixing portion, and the planar portion is parallel to the inner fixing portion.
Further, the first inclined portion and an included angle between the plane portions are equal to an included angle between the second inclined portion and the plane portions.
Furthermore, the junction between the first inclined portion and the inner fixing portion is in smooth transition, the junction between the second inclined portion and the outer fixing portion is in smooth transition, the junction between the first inclined portion and the planar portion is in smooth transition, and the junction between the second inclined portion and the planar portion is in smooth transition.
Further, a boss portion having a hollow structure with an opening at a bottom is provided on the planar portion, and the boss portion divides the planar portion into a first portion connected to the first inclined portion and a second portion connected to the second inclined portion.
Further, the cross section of the boss part is arc-shaped or n-shaped.
Furthermore, the surface of the folded ring part is provided with reinforced patterns.
In order to solve the technical problem, the utility model discloses still adopt following technical scheme: a micro speaker comprises the diaphragm.
Further, the ring-shaped washer is further provided with an annular washer, and the annular washer is provided with a position avoiding groove used for avoiding the position of the folded ring part.
The beneficial effects of the utility model reside in that: this vibrating diaphragm adopts the anti-cross-section of rolling over the ring design and rolling over ring portion to be trapezoidal, and simple structure, novelty compare with the convex ring portion of rolling over of tradition, and trapezoidal ring portion of rolling over has improved the deformation volume effectively under the condition that does not change overall height to satisfy the demand of vibrating diaphragm, the big vibrating diaphragm of miniature speaker.
Drawings
Fig. 1 is an exploded view of a micro-speaker according to a first embodiment of the present invention;
fig. 2 is a cross-sectional view of a micro-speaker according to a first embodiment of the present invention;
fig. 3 is a schematic structural view of a frame in a micro speaker according to a first embodiment of the present invention;
fig. 4 is a cross-sectional view of a diaphragm in a micro-speaker according to a second embodiment of the present invention.
Description of reference numerals:
1. a basin stand;
2. a magnetic circuit assembly; 21. a magnetic bowl;
31. a centering support; 32. a secondary membrane;
4. a voice coil;
5. a ball top;
6. vibrating diaphragm;
61. an inner fixing portion; 62. a folded ring part; 621. a first inclined portion; 622. a planar portion; 6221. a boss portion; 6222. a first portion; 6223. a second portion; 623. a second inclined portion; 63. an outer fixing portion;
7. damping mesh cloth;
8. a ring washer; 81. an avoiding groove.
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. 1 to 4, a diaphragm 6 includes an inner fixing portion 61, a bending portion 62 and an outer fixing portion 63 connected in sequence from inside to outside, wherein the bending portion 62 has a trapezoidal cross section.
From the above description, the beneficial effects of the present invention are: this vibrating diaphragm adopts the anti-cross-section of rolling over the ring design and rolling over ring portion to be trapezoidal, and simple structure, novelty compare with the convex ring portion of rolling over of tradition, and trapezoidal ring portion of rolling over has improved the deformation volume effectively under the condition that does not change overall height to satisfy the demand of vibrating diaphragm, the big vibrating diaphragm of miniature speaker.
Further, the annular folding part 62 comprises a first inclined part 621, a plane part 622 and a second inclined part 623 which are sequentially connected from inside to outside, an included angle between the first inclined part 621 and the plane part 622 is 30-90 °, and an included angle between the second inclined part 623 and the plane part 622 is 30-90 °.
As can be seen from the above description, the effective deformation amount of the bending portion 62 of the diaphragm 6 can be adjusted by adjusting the angle between the first and second inclined portions and the plane portion 622.
Further, the inner fixing portion 61 is flush with the outer fixing portion 63, and the flat portion 622 is parallel to the inner fixing portion 61.
Further, an angle between the first inclined portion 621 and the planar portion 622 is equal to an angle between the second inclined portion 623 and the planar portion 622.
It can be known from the above description that the cross-section of the edge portion 62 is isosceles trapezoid, so that the first and second inclined portions are uniformly stressed, thereby being beneficial to ensuring the structural stability of the vibrating diaphragm 6, prolonging the service life of the vibrating diaphragm 6 and ensuring the acoustic performance of the micro-speaker.
Furthermore, the connection between the first inclined portion 621 and the inner fixing portion 61 is smoothly transitioned, the connection between the second inclined portion 623 and the outer fixing portion 63 is smoothly transitioned, the connection between the first inclined portion 621 and the planar portion 622 is smoothly transitioned, and the connection between the second inclined portion 623 and the planar portion 622 is smoothly transitioned.
As can be seen from the above description, the smooth transition of each joint can relieve the stress concentration of the diaphragm 6, which is beneficial to prolonging the service life of the diaphragm 6.
Further, a boss portion 6221 having a hollow structure with an opening at the bottom is provided on the flat surface portion 622, and the boss portion 6221 divides the flat surface portion 622 into a first portion 6222 connected to the first inclined portion 621 and a second portion 6223 connected to the second inclined portion 623.
As can be seen from the above description, the arrangement of the boss portion 6221 can increase the deformation amount of the bending portion 62 of the diaphragm 6, and more effectively meet the requirement of large amplitude. It will be readily appreciated that the height and width of the boss may be adjusted according to the actual design.
Further, the cross section of the boss portion 6221 is arc-shaped or n-shaped.
As can be seen from the above description, the boss portion 6221 is simple in construction and easy to manufacture.
Further, the surface of the folded ring part 62 is provided with a reinforcing pattern.
As can be seen from the above description, the reinforcing patterns can enhance the rigidity of the diaphragm 6 and improve the performance of the micro-speaker. The reinforcing patterns include, but are not limited to, ribs, beads, etc.
The micro loudspeaker comprises the diaphragm 6.
As can be seen from the above description, the micro-speaker can realize vibration with a larger amplitude without changing the overall height.
Further, the annular washer 8 is further included, and an avoiding groove 81 for avoiding the position of the ring folding portion 62 is formed in the annular washer 8.
It can be known from the above description that the distance between the ring-folded part 62 of the vibrating diaphragm 6 and the annular washer 8 can be effectively increased by the arrangement of the avoiding groove 81, so that the phenomenon that the ring-folded part 62 of the vibrating diaphragm 6 collides with the annular washer 8 due to the increase of the amplitude of the vibrating diaphragm 6 is avoided, noise occurs, the vibrating diaphragm 6 breaks, and the like is avoided, and the service life of the micro-speaker is effectively ensured.
Example one
Referring to fig. 1 to fig. 3, a first embodiment of the present invention is: the micro-speaker can be used for electronic equipment such as smart phones, camcorders, cameras, notebook computers and the like.
As shown in fig. 1, the micro-speaker includes a frame 1, a magnetic circuit assembly 2, a support assembly, a voice coil 4, a dome 5, a diaphragm 6 and a damping mesh fabric 7, the magnetic circuit assembly 2, the support assembly and the diaphragm 6 are respectively fixed on the frame 1, the diaphragm 6 includes an inner fixing portion 61, a corrugated ring portion 62 and an outer fixing portion 63 which are sequentially connected from inside to outside, the outer fixing portion 63 is fixed on the frame 1, the voice coil 4 and the dome 5 are respectively fixedly connected to the inner fixing portion 61, the support assembly is connected to the voice coil 4, the magnetic circuit assembly 2 includes a magnetic bowl 21, and the damping mesh fabric 7 is fixed on the magnetic bowl 21.
For preventing voice coil 4 polarization, roll the phenomenon of shaking appear, supporting component includes centering branch piece 31 and vice membrane 32, centering branch piece 31 is connected respectively basin frame 1 with voice coil 4, vice membrane 32 is connected respectively basin frame 1 with voice coil 4.
The cross section of the annular folding part 62 is trapezoidal, in detail, the annular folding part 62 comprises a first inclined part 621, a plane part 622 and a second inclined part 623 which are sequentially connected from inside to outside, an included angle between the first inclined part 621 and the plane part 622 is 30-90 degrees, an included angle between the second inclined part 623 and the plane part 622 is 30-90 degrees, and the plane part 622 is close to the magnetic bowl 21.
Preferably, the inner fixing portion 61 is flush with the outer fixing portion 63, the planar portion 622 is parallel to the inner fixing portion 61, and the angle of the included angle between the first inclined portion 621 and the planar portion 622 is equal to the angle of the included angle between the second inclined portion 623 and the planar portion 622. In other words, the cross section of the annular folding part 62 is isosceles trapezoid. Preferably, an angle between the first inclined portion 621 and the flat portion 622 is 60 °.
In order to prolong the service life of the diaphragm 6, the connection between the first inclined portion 621 and the inner fixing portion 61 is smoothly transited, the connection between the second inclined portion 623 and the outer fixing portion 63 is smoothly transited, the connection between the first inclined portion 621 and the planar portion 622 is smoothly transited, and the connection between the second inclined portion 623 and the planar portion 622 is smoothly transited.
The surface of the folded ring part 62 is provided with a reinforcing pattern (not shown), and the reinforcing pattern comprises convex ribs and/or concave ribs.
Referring to fig. 2 and 3, further, an annular washer 8 is further disposed on the basin frame 1, the annular washer 8 is located on the top surface of the magnetic circuit assembly 2, and a position-avoiding groove 81 for avoiding a position of the ring-folded portion 62 is disposed on the annular washer 8. The depth of the avoiding groove 81 is 0.05mm-0.20mm, and preferably the depth of the avoiding groove 81 is 0.1 mm. Optionally, the annular washer 8 and the basin stand 1 are formed into an integral structure through insert injection molding.
Example two
Referring to fig. 4, the second embodiment of the present invention is a further improvement of the corrugated portion 62 of the diaphragm 6 on the basis of the first embodiment, and the difference from the first embodiment is only that: a boss portion 6221 having a hollow structure with an opening at the bottom is provided on the flat surface portion 622, and the boss portion 6221 divides the flat surface portion 622 into a first portion 6222 connected to the first inclined portion 621 and a second portion 6223 connected to the second inclined portion 623.
Optionally, the cross section of the boss portion 6221 is arc-shaped or n-shaped.
The arrangement of the boss portion 6221 on the flat surface 622 of the annular flange portion 62 can further improve the deformation amount of the annular flange portion 62, thereby more effectively satisfying the requirement of large amplitude.
To sum up, the vibrating diaphragm and the micro speaker provided by the utility model have simple and novel structures, compared with the traditional arc-shaped folded ring part, the trapezoidal folded ring part effectively improves the deformation amount under the condition of not changing the whole height, thereby meeting the requirements of the vibrating diaphragm and the large vibrating diaphragm of the micro speaker; the acoustic performance is excellent, and the service life is long.
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 (8)
1. The utility model provides a vibrating diaphragm, includes interior fixed part, ring bending portion and outer fixed part that from inside to outside links to each other in proper order, its characterized in that: the section of the folded ring part is trapezoidal; the edge bending part comprises a first inclined part, a plane part and a second inclined part which are sequentially connected from inside to outside, the included angle between the first inclined part and the plane part is 30-90 degrees, and the included angle between the second inclined part and the plane part is 30-90 degrees; the flat portion is provided with a boss portion having a hollow structure with an opening at the bottom, and the boss portion divides the flat portion into a first portion connected to the first inclined portion and a second portion connected to the second inclined portion.
2. The diaphragm of claim 1, wherein: the inner fixing portion is flush with the outer fixing portion, and the plane portion is parallel to the inner fixing portion.
3. The diaphragm of claim 1, wherein: the first inclined portion and an included angle between the plane portions are equal to a second inclined portion and an included angle between the plane portions.
4. The diaphragm of claim 1, wherein: the connecting part of the first inclined part and the inner fixing part is in smooth transition, the connecting part of the second inclined part and the outer fixing part is in smooth transition, the connecting part of the first inclined part and the plane part is in smooth transition, and the connecting part of the second inclined part and the plane part is in smooth transition.
5. The diaphragm of claim 1, wherein: the cross section of the boss part is arc-shaped or n-shaped.
6. The diaphragm of claim 1, wherein: the surface of the folded ring part is provided with reinforced patterns.
7. Miniature speaker, its characterized in that: comprising a diaphragm according to any one of claims 1 to 6.
8. The micro-speaker of claim 7, wherein: the ring-shaped washer is provided with a position avoiding groove for avoiding the position of the folded ring part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021295761.1U CN213073071U (en) | 2020-07-02 | 2020-07-02 | Vibrating diaphragm and miniature loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021295761.1U CN213073071U (en) | 2020-07-02 | 2020-07-02 | Vibrating diaphragm and miniature loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213073071U true CN213073071U (en) | 2021-04-27 |
Family
ID=75571018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021295761.1U Active CN213073071U (en) | 2020-07-02 | 2020-07-02 | Vibrating diaphragm and miniature loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213073071U (en) |
-
2020
- 2020-07-02 CN CN202021295761.1U patent/CN213073071U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100566456C (en) | Loud speaker and manufacture method thereof | |
| CN201839427U (en) | Loudspeaker | |
| KR100902895B1 (en) | Speaker | |
| CN107770704A (en) | Side vibrating diaphragm with water proofing property and the Microspeaker with the side vibrating diaphragm | |
| CN213073071U (en) | Vibrating diaphragm and miniature loudspeaker | |
| CN203120148U (en) | A loudspeaker | |
| CN111935608B (en) | Loudspeaker | |
| CN208353598U (en) | Vibrating diaphragm and loudspeaker | |
| CN214591957U (en) | Large-amplitude micro loudspeaker | |
| CN113301482B (en) | Vibrating diaphragm for microphone and microphone | |
| US11146889B2 (en) | Diaphragm | |
| WO2021012610A1 (en) | Dust-proof cap assembly and ultra-thin loudspeaker | |
| CN213586263U (en) | Large-amplitude micro loudspeaker | |
| CN212910031U (en) | Large-amplitude micro loudspeaker | |
| CN201557248U (en) | Ball top vibration film | |
| KR200436061Y1 (en) | Structure of diaphragm in microspeaker | |
| CN218217656U (en) | Vertical suspension type sound film | |
| CN213586259U (en) | Miniature loudspeaker | |
| CN213073084U (en) | Large-amplitude micro loudspeaker | |
| CN211152203U (en) | Loudspeaker dangling edge, loudspeaker and sound box | |
| CN219068357U (en) | Speaker and electronic equipment | |
| CN218634265U (en) | Large-amplitude micro loudspeaker | |
| CN214177546U (en) | Vibrating diaphragm and loudspeaker | |
| CN215420751U (en) | Loudspeaker monomer | |
| JPH03213100A (en) | Loudspeaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |