CN110784812B - Flexible circuit board and loudspeaker - Google Patents
Flexible circuit board and loudspeaker Download PDFInfo
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- CN110784812B CN110784812B CN201911401572.XA CN201911401572A CN110784812B CN 110784812 B CN110784812 B CN 110784812B CN 201911401572 A CN201911401572 A CN 201911401572A CN 110784812 B CN110784812 B CN 110784812B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Abstract
The utility model provides a flexible circuit board, includes the central part fixed with the voice coil loudspeaker voice coil and the edge part fixed with the basin frame, the central part with be connected through the linking arm between the edge part, the linking arm includes this body portion and two tip, the linking arm passes through two tip are connected with central part and edge part respectively, the tip of linking arm includes a plurality of sub-linking arms, and is a plurality of sub-linking arm is located one of them end or both ends of linking arm. The connecting arm is connected with the central part and the edge part through the sectional type sub-connecting arm, so that the overall transverse vibration level can be reduced, the fatigue resistance of the connecting arm is improved by reducing stress, and the sound energy conversion efficiency of the loudspeaker can be effectively improved.
Description
Technical Field
The invention relates to the field of acoustic assemblies, in particular to a flexible circuit board and a loudspeaker comprising the same.
Background
In order to increase the vibration amplitude of the vibration component of the ultra-linear speaker, the conventional lead wires need to be replaced by a flexible circuit board to conduct the circuit. The flexible circuit board is of a stacked structure of copper wrapped by high polymer materials, and the high polymer materials on the outer side can well protect the conductive copper foil on the inner side.
Traditional stacked structure's flexible circuit board, for preventing its root fatigue failure, the root width can not be designed the too wide in order to prevent its stress too big, but the width not enough can lead to its horizontal support not enough, and in its operating frequency, too big transverse vibration can not provide effectual longitudinal vibration amplitude output for the vibrating diaphragm, and then reduces the acoustic pressure output of speaker. If the width of the root of the flexible circuit board is simply increased, the stress of the root tends to be sharply increased during longitudinal vibration, and finally vibration fatigue failure is caused. The root of the existing flexible circuit board is in a single-stage type, and the root of the existing flexible circuit board cannot be designed to be too narrow in order to prevent high-cycle fatigue failure, so that severe local resonance can be generated at the root due to the too narrow design, the stress of an internal copper layer is increased sharply due to the resonance of the root, and finally, the product is broken and fails. The limitation of the width of the root part of the flexible circuit board can cause the flexible circuit board to generate transverse vibration at lower frequency, and the sound production of the loudspeaker is generated by longitudinal waves of air pushed by the ball top. Lateral vibration reduces the radiation level of acoustic energy and requires suppression of its lateral vibration level.
Disclosure of Invention
The invention aims to overcome the defects of the traditional technology and provide a flexible circuit board and a loudspeaker comprising the flexible circuit board, wherein the width of the root part is increased, and the stress and the transverse vibration level can be reduced.
The aim of the invention is achieved by the following technical measures: the utility model provides a flexible circuit board, includes the central part fixed with the voice coil loudspeaker voice coil and the edge part fixed with the basin frame, the central part with be connected through the linking arm between the edge part, the linking arm includes this body portion and two tip, the linking arm passes through two tip are connected with central part and edge part respectively, the tip of linking arm includes a plurality of sub-linking arms, and is a plurality of sub-linking arm is located one of them end or both ends of linking arm.
Preferably, the number of the sub connecting arms is at least 2, a plurality of the sub connecting arms form a triangular structure and/or two adjacent sub connecting arms form a triangular structure.
Preferably, the width of the plurality of sub connecting arms increases gradually from the main body portion to the connecting portion of the connecting arm with the central portion and/or the edge portion.
Preferably, the distance between adjacent sub-connecting arms is approximately triangular, and the width of the distance gradually increases from the direction of the main body to the connection position of the connecting arm and the central part and/or the edge part.
Preferably, the sub-connecting arms are arranged in an arc shape.
Preferably, the radius of curvature of the sub-link arm increases from the inside to the outside in this order.
Preferably, the width of the sub-link arm increases from the inside to the outside in this order.
Preferably, each of the sub-link arms has a width smaller than that of the link arm.
Preferably, the sum of the widths of the sub-link arms is greater than the width of the link arm.
A loudspeaker, characterized by: the loudspeaker comprises the flexible circuit board.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the invention provides a flexible circuit board, wherein a connecting arm is connected with a central part and an edge part by designing a sectional type sub-connecting arm, so that the design can reduce the overall transverse vibration level, reduce stress to improve the fatigue resistance of the connecting arm and effectively improve the sound energy conversion efficiency of a loudspeaker.
The invention is further described with reference to the following figures and detailed description.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of a flexible circuit board according to the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of a flexible circuit board of the invention.
Fig. 3 is a schematic structural diagram of embodiment 3 of a flexible circuit board of the invention.
Fig. 4 is a schematic structural diagram of embodiment 4 of a flexible circuit board of the invention.
Fig. 5 is a schematic structural diagram of embodiment 5 of a flexible circuit board of the invention.
Fig. 6 is a schematic structural diagram of embodiment 6 of a flexible circuit board according to the present invention.
Fig. 7 is a schematic structural diagram of embodiment 7 of a flexible circuit board of the invention.
Fig. 8 is a schematic structural diagram of an embodiment 8 of a flexible circuit board according to the present invention.
Fig. 9 is a schematic structural diagram of an embodiment 9 of a flexible circuit board of the invention.
Fig. 10 is a schematic structural diagram of an embodiment 10 of a flexible circuit board according to the present invention.
Fig. 11 is a schematic structural diagram of an embodiment 11 of a flexible circuit board according to the present invention.
Fig. 12 is a schematic structural diagram of an embodiment 12 of a flexible circuit board of the present invention.
Fig. 13 is a schematic diagram of the original stress of a flexible circuit board according to the present invention.
Fig. 14 is a stress diagram of embodiment 1 of a flexible circuit board according to the present invention.
FIG. 15 is a schematic diagram of an original lateral vibration state of a flexible circuit board according to the present invention.
Fig. 16 is a schematic view of a lateral vibration state of embodiment 1 of a flexible circuit board of the present invention.
FIG. 17 is a schematic diagram of the prior lateral displacement of a flexible circuit board according to the present invention.
Fig. 18 is a schematic diagram of lateral displacement of embodiment 1 of a flexible circuit board according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Example 1: as shown in fig. 1, a flexible circuit board includes a central portion 1 fixed with a voice coil and an edge portion 2 fixed with a frame, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, the connecting arm includes a main portion and two end portions, the main portion is a portion between the two end portions, the connecting arm is respectively connected with the central portion 1 and the edge portion 2 through the two end portions, the central portion and the edge portion are both annularly arranged and concentrically arranged, wherein the inner portion is the central portion 1, the outer portion is the edge portion 2, the radius of the central portion 1 is smaller than that of the edge portion 2, the central portion 1 is located inside the edge portion 2, in this embodiment, three connecting arms 3 are arranged between the central portion 1 and the edge portion 2, the three connecting arms 3 are symmetrically arranged, and one end of the connecting arm 3 connected with the central portion, the connecting arms 3 are connected to the central part 1 by sub-connecting arms 4. In this embodiment, the three sub-connecting arms 4 are provided in total, the sub-connecting arms 4 are located at the root of the connecting arm 3, and the three sub-connecting arms 4 are integrally formed into a triangular structure, and the width of one end of the connecting arm 3 gradually increases from the end of the central portion 1. The one end that a plurality of sub-linking arms 4 are located the linking arm 3 assembles into one section, and the one end that is located central part 1 still is the multistage, and the sub-linking arm 4 of sectional type is connected central part 1 and linking arm 3, and such design can reduce holistic transverse vibration level, reduces the stress and improves the antifatigue ability of linking arm 3, can also effectively improve the acoustic energy conversion efficiency of speaker. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 1 of the central part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arranged in an arc shape and is bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side and opposite to the outer side, the inner side of the connecting arm 3 is the inner side, namely the outer side is the convex direction of the connecting arm 3, and the inner side is the opposite side. The radius of curvature of the sub link arms 4 increases from the inside to the outside in this order, that is, the degree of curvature of the sub link arms 4 increases from the outside to the inside in this order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
As shown in fig. 13 and 14, the prior art solution before optimization has a stress maximum of 18.11, and the stress maximum after optimization is only 15.55. Under the same vibration amplitude, the stress amplitude of the optimized sub-connecting arm is reduced by fifteen percent compared with that before optimization, and the fatigue resistance of the optimized sub-connecting arm can be effectively improved by reducing the stress level.
As shown in fig. 15 and 16, in the prior art before optimization, the maximum value of the transverse vibration frequency is 21238, while in the prior art after optimization, the maximum value of the transverse vibration frequency is 30121, and the transverse resonance frequency of the flexible circuit board after optimization is improved by twelve percent compared with that before optimization, and the attenuation of limited delay sound is achieved.
As shown in fig. 17 and 18, in the optimized scheme, the normal amplitude in the transverse mode is improved by ninety-eight percent and is more stable in the prior art before being optimized, and the sound energy conversion efficiency of the loudspeaker can be effectively improved.
Example 2: as shown in fig. 2, a flexible circuit board includes a central portion 1 fixed with a voice coil and an edge portion 2 fixed with a frame, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, the connecting arm includes a main portion and two end portions, the connecting arm passes through the two end portions and is respectively connected with the central portion 1 and the edge portion 2, the central portion 1 and the edge portion 2 are concentrically arranged, the radius of the central portion 1 is smaller than that of the edge portion 2, the central portion 1 is located inside the edge portion 2, in this embodiment, three connecting arms 3 are arranged between the central portion 1 and the edge portion 2, the three connecting arms 3 are arranged in a central symmetry manner, one end of the connecting arm 3 connected with the edge portion 2 is provided with a plurality of sub-connecting arms 4, and the connecting arm. In this embodiment, the three sub-connecting arms 4 are provided with three groups in total, the sub-connecting arms 4 are located at the root of the connecting arm 3, and the three sub-connecting arms 4 are integrally formed into a triangular structure and gradually increase from the width of one end of the connecting arm 3 to the end of the edge portion 2. The one end that a plurality of sub-linking arms 4 are located linking arm 3 assembles into one section, and the one end that is located edge portion 2 still is the multistage, and edge portion 2 and linking arm 3 are connected to the sub-linking arm 4 of sectional type, and such design can reduce holistic transverse vibration level, and the anti-fatigue ability that reduces stress and improve linking arm 3 can also effectively improve the acoustic energy conversion efficiency of speaker. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 2 of each edge part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
Example 3: as shown in fig. 3, a flexible circuit board includes a central portion 1 fixed with a voice coil and an edge portion 2 fixed with a frame, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, the connecting arm includes a main body portion and two end portions, the connecting arm is respectively connected with the central portion 1 and the edge portion 2 through the two end portions, the central portion 1 and the edge portion 2 are concentrically arranged, and the radius of the central portion 1 is smaller than that of the edge portion 2, so the central portion 1 is located inside the edge portion 2, in this embodiment, three connecting arms 3 are arranged between the central portion 1 and the edge portion 2, the three connecting arms 3 are arranged in a central symmetry manner, and two ends of the connecting arm 3 are respectively connected with the central portion 1 and the edge portion 2 through a. In this embodiment, the total of the sub-connecting arms 4 is six groups, the sub-connecting arms 4 at both ends are all located at the root of the connecting arm 3, one end of each of the sub-connecting arms 4 in each group located at the connecting arm 3 is converged into one section, and one ends located at the central portion 1 and the edge portion 2 are still multi-sections, so that the design can reduce the overall transverse vibration level, reduce the stress to improve the fatigue resistance of the connecting arm 3, and can effectively improve the sound energy conversion efficiency of the loudspeaker. In this embodiment, the number of the sub-connecting arms 4 at each end is three, two or four sub-connecting arms can be arranged, three sections of the sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of the sub-connecting arm can be reduced on the contrary, and the fatigue resistance of the sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end of each connecting arm to the other end of each connecting arm. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely, the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
In this embodiment, the connecting arm 3 is bent, and the bent portion is arc-shaped.
Example 4: as shown in fig. 4, a flexible circuit board comprises a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected by a connecting arm 3, the central portion 1 and the edge portion 2 both comprise an upper portion and a lower portion which are symmetrical, the upper portion and the lower portion are arranged at intervals, each central portion 1 comprises a strip-shaped connecting portion and arc end portions at both ends of the connecting portion, the arc end portions of the two central portions 1 are arranged opposite to each other, the edge portion 2 is arranged outside the central portion 1, the two edge portions 2 integrally surround the two central portions 1, one end of the connecting arm 3 is arranged at the arc end portion of the central portion 1, the other end of the connecting arm 3 is arranged at a position where the middle portion of the edge portion 2 is biased to the arc end portion connected with the connecting arm, so that the two central portions 1 have four arc end portions in total, the, the connecting arms 3 are connected to the central part 1 by sub-connecting arms 4. The corresponding sub connection arms 4 have four groups. The sub-connecting arms 4 are located at the root parts of the connecting arms 3, one ends, located at the connecting arms 3, of the sub-connecting arms 4 are converged into one section, one ends, located at the central part 1, of the sub-connecting arms are still multiple sections, the segmented sub-connecting arms 4 connect the central part 1 with the connecting arms 3, the design can reduce the overall transverse vibration level, the stress is reduced, the fatigue resistance of the connecting arms 3 is improved, and the sound energy conversion efficiency of the loudspeaker can be effectively improved. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 1 of the central part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
Example 5: as shown in fig. 5, a flexible circuit board comprises a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected by a connecting arm 3, the central portion 1 and the edge portion 2 both comprise an upper portion and a lower portion which are symmetrical, the upper portion and the lower portion are arranged at intervals, each central portion 1 comprises a strip-shaped connecting portion and arc-shaped end portions at two ends of the connecting portion, the arc-shaped end portions of the two central portions 1 are arranged opposite to each other, the edge portion 2 is arranged outside the central portion 1, the two edge portions 2 integrally surround the two central portions 1, one end of the connecting arm 3 is arranged at the arc-shaped end portion of the central portion 1, the other end of the connecting arm 3 is arranged at a position where the middle portion of the edge portion 2 is biased to the arc-shaped end portion connected with the connecting arm, so that the two central portions 1 have, the connecting arm 3 is connected to the edge portion 2 by a sub-connecting arm 4. The corresponding sub connection arms 4 have four groups. The sub-connecting arms 4 are located at the root parts of the connecting arms 3, one ends, located at the connecting arms 3, of the sub-connecting arms 4 are converged into one section, one ends, located at the central part 1, of the sub-connecting arms are still multiple sections, the edge parts 2 and the connecting arms 3 are connected through the sub-connecting arms 4 of the sectional type, the design can reduce the overall transverse vibration level, the stress is reduced, the fatigue resistance of the connecting arms 3 is improved, and the sound energy conversion efficiency of the loudspeaker can be effectively improved. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 2 of each edge part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
Example 6: as shown in fig. 6, a flexible circuit board comprises a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected by a connecting arm 3, the central portion 1 and the edge portion 2 both comprise an upper portion and a lower portion which are symmetrical, the upper portion and the lower portion are arranged at intervals, each central portion 1 comprises a strip-shaped connecting portion and arc-shaped end portions at two ends of the connecting portion, the arc-shaped end portions of the two central portions 1 are arranged oppositely, and the edge part 2 is arranged outside the central part 1, the two part edge part 2 integrally surrounds the two part central part 1, one end of the connecting arm 3 is positioned at the arc-shaped end part of the central part 1, the other end is positioned at the position where the middle part of the edge part 2 is deviated to the arc-shaped end part connected with the connecting arm, so that the two parts of the central part 1 have a total of four curved ends, the whole structure requires four connecting arms 3 to be connected, both ends of the connecting arm 3 are connected to the central portion 1 and the edge portion 2 by a plurality of sub-connecting arms 4, respectively. The corresponding sub-link arms 4 have eight groups. Every group sub-linking arm 4 all is located the root of linking arm 3, and the one end that a plurality of sub-linking arms 4 in every group are located linking arm 3 assembles into one section, and the one end that is located central part 1 and edge part 2 still is the multistage, and the sub-linking arm 4 of sectional type is connected central part 1 and edge part 2 and linking arm 3, and holistic transverse vibration level can be reduced to such design, reduces stress and improves the anti-fatigue ability of linking arm 3, can also effectively improve the acoustic energy conversion efficiency of speaker. In this embodiment, each group of sub-connecting arms 4 is provided with three, two or four, etc., and the three sections of sub-connecting arms 4 are in a triangular configuration, which can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than the design scheme, the stress can be reduced, and the fatigue resistance can be better.
And a space 5 is formed between adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end of the connecting arm 3 to the end of the central part 1 and the edge part 2. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
In this embodiment, the connecting arm 3 is bent, and the bent portion is arc-shaped.
Example 7: as shown in fig. 7, a flexible circuit board includes a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected by a connecting arm 3, the central portion 1 and the edge portion 2 both include four symmetrical portions, the four portions are spaced apart from each other, the four portions of the edge portion 2 are respectively located at four corners of a virtual rectangle, the central portion 1 and the edge portion 2 of each portion correspond to each other one by one, the central portion 1 is located on the inner side of the edge portion 2, the corresponding portions of the central portion 1 and the edge portion 2 are connected by the connecting arm 3, the whole structure is provided with a total of four connecting arms 3, one end of the connecting arm 3 connected with the central portion 1 is provided with a plurality of sub-connecting arms 4, and. The corresponding sub connection arms 4 have four groups. The sub-connecting arms 4 are located at the root parts of the connecting arms 3, one ends, located at the connecting arms 3, of the sub-connecting arms 4 are converged into one section, one ends, located at the central part 1, of the sub-connecting arms are still multiple sections, the segmented sub-connecting arms 4 connect the central part 1 with the connecting arms 3, the design can reduce the overall transverse vibration level, the stress is reduced, the fatigue resistance of the connecting arms 3 is improved, and the sound energy conversion efficiency of the loudspeaker can be effectively improved. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 1 of the central part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
In this embodiment, the connecting arm 3 is bent, and the bent portion is arc-shaped.
Example 8: as shown in fig. 8, a flexible circuit board includes a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected by a connecting arm 3, the central portion 1 and the edge portion 2 include four symmetrical portions, the four portions are spaced apart from each other, the four portions of the edge portion 2 are respectively located at four corners of a virtual rectangle, the central portion 1 and the edge portion 2 of each portion correspond to each other one by one, the central portion 1 is located on the inner side of the edge portion 2, the corresponding portions of the central portion 1 and the edge portion 2 are connected by the connecting arm 3, the whole structure is provided with a total of four connecting arms 3, one end of the connecting arm 3 connected with the edge portion 2 is provided with a plurality of sub-connecting arms 4, and the. The corresponding sub connection arms 4 have four groups. The sub-connecting arms 4 are located at the root parts of the connecting arms 3, one ends, located at the connecting arms 3, of the sub-connecting arms 4 are converged into one section, one ends, located at the edge parts 2, of the sub-connecting arms are still multiple sections, the segmented sub-connecting arms 4 connect the central part 1 with the connecting arms 3, the design can reduce the overall transverse vibration level, the stress is reduced, the fatigue resistance of the connecting arms 3 is improved, and the sound energy conversion efficiency of the loudspeaker can be effectively improved. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 2 of each edge part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
In this embodiment, the connecting arm 3 is bent, and the bent portion is arc-shaped.
Example 9: as shown in fig. 9, a flexible circuit board includes a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected by a connecting arm 3, the central portion 1 and the edge portion 2 each include four symmetrical portions, the four portions are spaced apart from each other, the four portions of the edge portion 2 are respectively located at four corners of a virtual rectangle, the central portion 1 and the edge portion 2 of each portion correspond to each other one by one, the central portion 1 is located on the inner side of the edge portion 2, the corresponding portions of the central portion 1 and the edge portion 2 are connected by the connecting arm 3, the whole structure is provided with a total of four connecting arms 3, and two ends of the connecting arms 3 are respectively connected with the central portion 1 and the edge portion. The corresponding sub-link arms 4 have eight groups. The sub-connecting arms 4 are located at the root parts of the two ends of the connecting arm 3, one ends of the sub-connecting arms 4 located at the connecting arm 3 are converged into one section, one ends of the sub-connecting arms located at the central part 1 and the edge part 2 are still multiple sections, and the segmented sub-connecting arms 4 connect the central part 1 and the edge part 2 with the connecting arm 3. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 1 of the central part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
In this embodiment, the connecting arm 3 is bent, and the bent portion is arc-shaped.
Example 10: as shown in fig. 10, a flexible circuit board includes a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, the edge portion 2 is a hollow rectangle, the central portion 1 is also a hollow rectangle, the central portion 1 is located in the hollow portion in the middle of the edge portion 2, the central portion 1 is located inside the edge portion 2, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, one end of the connecting arm 3 is connected with a corner of the outer side of the central portion 1, the other end of the connecting arm is connected with the inner side of the edge portion 2, a total of four connecting arms 3 are provided in the whole structure, one end of the connecting arm 3 connected with the central portion 1 is provided with a plurality of sub-. The corresponding sub connection arms 4 have four groups. The sub-connecting arms 4 are located at the root parts of the connecting arms 3, one ends, located at the connecting arms 3, of the sub-connecting arms 4 are converged into one section, one ends, located at the central part 1, of the sub-connecting arms are still multiple sections, the segmented sub-connecting arms 4 connect the central part 1 with the connecting arms 3, the design can reduce the overall transverse vibration level, the stress is reduced, the fatigue resistance of the connecting arms 3 is improved, and the sound energy conversion efficiency of the loudspeaker can be effectively improved. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 1 of the central part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
In this embodiment, the width of the connection of the connecting arm 3 and the edge portion 2 is greater than the width of the connecting arm 3 itself. Thereby reducing stress at the connection.
Example 11: as shown in fig. 11, a flexible circuit board includes a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, the edge portion 2 is a hollow rectangle, the central portion 1 is also a hollow rectangle, the central portion 1 is located in the hollow portion in the middle of the edge portion 2, the central portion 1 is located inside the edge portion 2, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, one end of the connecting arm 3 is connected with a corner of the outer side of the central portion 1, the other end of the connecting arm is connected with the inner side of the edge portion 2, a total of four connecting arms 3 are provided in the whole structure, one end of the connecting arm 3 connected with the edge portion 2 is provided with a plurality of sub-. The corresponding sub connection arms 4 have four groups. The sub-connecting arms 4 are located at the root parts of the connecting arms 3, one ends, located at the connecting arms 3, of the sub-connecting arms 4 are converged into one section, one ends, located at the edge parts 2, of the sub-connecting arms are still multiple sections, the segmented sub-connecting arms 4 connect the central part 1 with the connecting arms 3, the design can reduce the overall transverse vibration level, the stress is reduced, the fatigue resistance of the connecting arms 3 is improved, and the sound energy conversion efficiency of the loudspeaker can be effectively improved. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end 3 of each connecting arm to the end 2 of each edge part. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
Example 12: as shown in fig. 12, a flexible circuit board comprises a central portion 1 and an edge portion 2, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, the edge portion 2 is a hollow rectangle, the central portion 1 is also a hollow rectangle, the central portion 1 is located in the hollow part in the middle of the edge portion 2, the central portion 1 is located on the inner side of the edge portion 2, the central portion 1 and the edge portion 2 are connected through a connecting arm 3, one end of the connecting arm 3 is connected with the corner of the outer side of the central portion 1, the other end of the connecting arm is connected with the inner side of the edge portion 2, a total of four connecting arms 3 are arranged in the whole structure, and the connecting arm 3. The corresponding sub-link arms 4 have eight groups, each of which is provided in plurality. The sub-connecting arms 4 are located at the root parts of two ends of the connecting arm 3, one ends of the sub-connecting arms 4 located at the connecting arm 3 are converged into one section, one ends of the sub-connecting arms located at the central part 1 and the edge part 2 are still multiple sections, and the segmented sub-connecting arms 4 connect the central part 1 and the edge part 2 with the connecting arm 3. In this embodiment, three, two or four sub-connecting arms 4 are provided, the three sub-connecting arms 4 are in a triangular configuration, the triangular configuration can have high transverse rigidity, and in the longitudinal direction, because the width of each sub-connecting arm 4 is smaller than that of the design scheme, the stress of each sub-connecting arm can be reduced on the contrary, and the fatigue resistance of each sub-connecting arm can be better.
And a space 5 is formed between every two adjacent sub connecting arms 4, and the width of the space 5 is gradually increased from the end of each connecting arm 3 to the end of the central part 1 or the edge part 2. The adjacent sub-connecting arms 4 form an approximate triangular shape, and the triangular configuration can have high transverse rigidity.
The sub-connecting arm 4 is arc-shaped and bent towards the inner side, wherein the end part of the connecting arm 3 is the outer side, opposite to the outer side, and the inner side of the connecting arm 3 is arranged. The degree of bending of the sub-link arms 4 increases from the outside to the inside in order. In this embodiment, the sub-link arms 4 are sequentially increased by twenty percent from the end portions of the link arms 3 to the inside, the widths of the sub-link arms 4 are also sequentially increased, the widths of the sub-link arms 4 are sequentially increased by twenty percent from the inner side to the end portion side of the link arms 3, the sub-link arms 4 at the end portions, namely the sub-link arms 4 at the outermost side, are minimum in bending degree and maximum in width, so that the stress can be effectively reduced, and the structural strength is increased.
The width of each sub-link arm 4 is smaller than the width of the link arm 3. The sum of the widths of the sub-link arms 4 is greater than the width of the link arm 3. Its stress level is therefore reduced; at the same time, the increased width provides effective support for suppressing lateral vibration thereof, and aids in efficient energy conversion of the speaker.
Example 13: a speaker comprising a flexible circuit board employing one of embodiments 1-12.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a flexible circuit board, includes the central part fixed with the voice coil loudspeaker voice coil and the edge part fixed with the basin frame, the central part with be connected through the linking arm between the edge part, the linking arm includes this body portion and two tip, the linking arm passes through two tip are connected its characterized in that with central part and edge part respectively: the tip of linking arm includes a plurality of sub-linking arms, and is a plurality of sub-linking arm is located one of them one end or both ends of linking arm, and is a plurality of the width of sub-linking arm is followed body portion direction to the linking arm with the width that central part and/or edge part junction extended gradually increases, the width of sub-linking arm is increased by inboard outside in proper order, sub-linking arm is the arc setting, the radius of curvature of sub-linking arm is increased by inboard outside in proper order.
2. A flexible circuit board according to claim 1, wherein: the number of the sub connecting arms is at least 2, and the sub connecting arms form a triangular structure and/or two adjacent sub connecting arms form a triangular structure.
3. A flexible circuit board according to any one of claims 1-2, characterized in that: the distance between the adjacent sub connecting arms is approximately triangular, and the width of the distance is gradually increased from the direction of the main body part to the connection part of the connecting arm and the central part and/or the edge part.
4. A flexible circuit board according to any one of claims 1-2, characterized in that: the width of each sub-connecting arm is smaller than that of the connecting arm.
5. A flexible circuit board according to any one of claims 1-2, characterized in that: the sum of the widths of the sub connecting arms is larger than the width of the connecting arm.
6. A loudspeaker, characterized by: the loudspeaker includes the flexible circuit board of any one of claims 1-5 therein.
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| CN201911401572.XA CN110784812B (en) | 2019-12-31 | 2019-12-31 | Flexible circuit board and loudspeaker |
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| CN207968891U (en) * | 2018-01-27 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN208190906U (en) * | 2018-02-02 | 2018-12-04 | 瑞声科技(新加坡)有限公司 | The mini-sound device of flexible circuit board and the application flexible circuit board |
| CN208798196U (en) * | 2018-08-03 | 2019-04-26 | 瑞声科技(新加坡)有限公司 | Flexible circuit board and loudspeaker with the flexible circuit board |
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| CN208863075U (en) * | 2018-11-08 | 2019-05-14 | 深圳市信维声学科技有限公司 | Loudspeaker centring disk |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207869361U (en) * | 2018-01-12 | 2018-09-14 | 瑞声科技(新加坡)有限公司 | Microphone device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207968891U (en) * | 2018-01-27 | 2018-10-12 | 瑞声科技(新加坡)有限公司 | Microphone device |
| CN208190906U (en) * | 2018-02-02 | 2018-12-04 | 瑞声科技(新加坡)有限公司 | The mini-sound device of flexible circuit board and the application flexible circuit board |
| CN208798196U (en) * | 2018-08-03 | 2019-04-26 | 瑞声科技(新加坡)有限公司 | Flexible circuit board and loudspeaker with the flexible circuit board |
| CN208821062U (en) * | 2018-09-21 | 2019-05-03 | 歌尔科技有限公司 | A kind of sounding device |
| CN208863075U (en) * | 2018-11-08 | 2019-05-14 | 深圳市信维声学科技有限公司 | Loudspeaker centring disk |
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