Vibrating diaphragm, manufacturing method of vibrating diaphragm and related product

Abstract

The invention discloses a vibrating diaphragm, a manufacturing method of the vibrating diaphragm and a related product. The invention provides a vibrating diaphragm which comprises a vibrating part and a folding ring surrounding the edge of the vibrating part, patterns are formed on the surface of the folding ring, and the patterns have rigidity and size information. The extending direction of the patterns is from the first end part close to the vibration part to the second end part far away from the vibration part; the patterns are divided into a first area, a third area and a second area for communicating the first area with the third area along the extending direction; in the extending direction of the pattern, the size information of the pattern starts from the first area, and the first end part is gradually increased to a first size extreme point and enters a second area; the size information of the patterns is gradually reduced to a second size extreme point in the second area; and the size information of the patterns is gradually increased to a third size extreme point, enters a third area and is gradually reduced to a second end part. According to the scheme, the distortion of the vibrating diaphragm can be reduced by setting the size information of the vibrating diaphragm.

Description

Technical Field

[0001] The present disclosure generally relates to the field of loudspeaker technology. More specifically, the present disclosure relates to a diaphragm, a method for manufacturing the diaphragm, and related products. Background Art

[0002] The diaphragm is the sound-generating unit of acoustic devices such as headphones and speakers. When an electrical signal passes through the coil, the magnetic field changes, causing the force on the diaphragm to change and deform. Since the electrical signal changes rapidly, the diaphragm vibrates at high speed, thereby transferring energy to the air through the vibration of the diaphragm, generating sound waves, which is the sound we hear. The diaphragm may include a folding ring, and the folding ring may be provided with a pattern, which can be used to adjust the rigidity of the diaphragm, prevent the diaphragm from breaking and extend its service life. Through reasonable layout and design of patterns, stress concentration can be reduced and the stability and durability of the diaphragm can be improved.

[0003] The pattern on the diaphragm of related technology is generally narrow at both ends and wide in the middle, and shallow at both sides and deep in the middle. This pattern design makes the corresponding stiffness coefficient curve (Kms) poorly matched with the magnetic factor curve (Bl) in flatness, resulting in high distortion.

[0004] In view of this, there is an urgent need to provide a diaphragm solution to improve the matching degree of the stiffness coefficient curve of the pattern with the magnetic factor curve in terms of flatness, thereby reducing distortion. Summary of the invention

[0005] In order to at least solve one or more of the technical problems mentioned above, the present disclosure proposes a diaphragm solution in multiple aspects.

[0006] In a first aspect, the present disclosure provides a diaphragm, comprising: a vibration portion, and a folded ring surrounding the edge of the vibration portion, wherein a pattern is formed on the surface of the folded ring, and the pattern has rigidity and size information; the extension direction of the pattern is from a first end portion close to the vibration portion toward a second end portion away from the vibration portion; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area; the change characteristics of the size information are: along the extension direction of the pattern, the size information of the pattern starts from the first area, the first end portion gradually increases to a first size extreme point, and enters the second area; the size information of the pattern gradually decreases to a second size extreme point in the second area; and the size information of the pattern gradually increases to a third size extreme point, enters the third area, and gradually decreases to the second end.

[0007] In some embodiments, when the size information is width, along the extension direction of the pattern, the width information of the pattern starts from the first area, the first end gradually increases to the first width extreme point, and enters the second area; the width information of the pattern gradually decreases to the second width extreme point in the second area; and the width information of the pattern gradually increases to the third width extreme point, enters the third area, and gradually decreases to the second end.

[0008] In some embodiments, the ratio of the first width extreme point to the second width extreme point is in the range of 10:1-1:1; and / or the ratio of the third width extreme point to the second width extreme point is in the range of 10:1-1:1.

[0009] In some embodiments, the folding ring includes an annular raised area, the first end and the second end are located on both sides of the raised area, and the pattern extends from the first end to the second end in a raised or recessed manner.

[0010] In some embodiments, the second width extreme point is located at the top of the raised area of ​​the fold ring, and the first area and the third area are symmetrical about the second width extreme point.

[0011] In some embodiments, the size information of the pattern is determined by a stiffness coefficient curve, wherein the stiffness coefficient curve has a first extreme point, a third extreme point and a second extreme point of the stiffness coefficient curve in the first region, the third region and the second region respectively, wherein the second extreme point of the stiffness coefficient curve is greater than the first extreme point and the third extreme point, wherein the folding ring has rigidity, and the rigidity is characterized by the size information, and on a section perpendicular to the extension direction of the pattern, the greater the rigidity, the smaller the cross-sectional area / cross-sectional length of the pattern.

[0012] In some embodiments, the length of the first region accounts for 25-35% of the pattern length, the length of the second region accounts for 30%-50% of the pattern length, and the length of the third region accounts for 25-35% of the pattern length.

[0013] In some embodiments, the patterns are symmetrically arranged along the axis of the extension direction.

[0014] In some embodiments, when the size information is depth, along the extension direction of the pattern, the depth information of the pattern starts from the first area, gradually increases from the first end to the first depth extreme point, and enters the second area; the depth information of the pattern gradually decreases to the second depth extreme point in the second area; and the depth information of the pattern gradually increases to the third depth extreme point, enters the third area, and gradually decreases to the second end.

[0015] In some embodiments, the dimensional information includes one or more of the depth, width, cross-sectional length, cross-sectional area, and surface area of ​​the pattern; when multiple dimensional information of the pattern meets the changing characteristics of the dimensional information, any two of the multiple dimensional information correspond to the first area, the second area, and the third area, respectively, wherein the first area, the second area, and the third area corresponding to the first group of dimensional information overlap or partially overlap with the first area, the second area, and the third area corresponding to the second group of dimensional information.

[0016] In some embodiments, the first size information is width, the second size information is depth, and when the first area, the second area and the third area corresponding to the first size information overlap with the first area, the second area and the third area corresponding to the second size information, the first depth extreme point overlaps with the first width extreme point; and / or the second depth extreme point overlaps with the second width extreme point; and / or the third depth extreme point overlaps with the third width extreme point.

[0017] In some embodiments, the ratio of the first extreme depth point to the second extreme depth point is 5:1-1:1, and the ratio of the third extreme depth point to the second extreme depth point is 5:1-1:1.

[0018] In some embodiments, the second depth extreme point is located at the top of the fold ring protrusion area, and the first area and the third area are symmetrical about the second depth extreme point.

[0019] In some embodiments, the shape of the vibration part is circular or polygonal; when the shape of the folding ring is circular, the pattern is evenly distributed along the folding ring; when the shape of the folding ring is polygonal, the pattern is arranged at the turning point of adjacent sides of the polygon.

[0020] In a second aspect, the present disclosure provides a diaphragm, comprising: a vibration portion, and a folding ring surrounding the edge of the vibration portion, wherein a pattern is formed on the surface of the folding ring, the pattern having rigidity and size information, and an extension direction of the pattern is from a first end portion close to the vibration portion toward a second end portion away from the vibration portion; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area; the pattern is formed according to a stiffness coefficient curve and a magnetic factor curve, wherein the stiffness coefficient curve is used to display the rigidity of the pattern; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area, and the pattern has a first extreme point, a third extreme point and a second extreme point in the first area, the third area and the second area, respectively, wherein the second extreme point is greater than the first extreme point and the third extreme point, wherein the rigidity is characterized by size information, and on a cross section perpendicular to the extension direction of the pattern, the greater the rigidity, the smaller the cross-sectional area / cross-sectional length of the pattern.

[0021] In a third aspect, the present disclosure provides a folding ring having a pattern formed on its surface; the pattern extends in a direction from a first end close to a vibration portion toward a second end away from the vibration portion; the pattern is divided into a first region and a third region along the extension direction, and a second region connecting the first region and the third region.

[0022] In a fourth aspect, the present disclosure provides a loudspeaker, wherein the loudspeaker is provided with a diaphragm as described in any one of the first aspects.

[0023] In a fifth aspect, the present disclosure provides an electronic device, comprising the speaker as described in the fourth aspect.

[0024] In a sixth aspect, the present disclosure provides a method for manufacturing a diaphragm, the method comprising: providing a folded ring surrounding the vibration part, wherein the folded ring has rigidity, and the rigidity is characterized by size information; arranging the vibration part at the middle position of the folded ring; forming a pattern on the surface of the folded ring; wherein the extension direction of the pattern is from a first end close to the vibration part to a second end away from the vibration part; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area; along the extension direction of the pattern, the size information of the pattern starts from the first area, the first end gradually increases to a first size extreme point, and enters the second area; the size information of the pattern gradually decreases to a second size extreme point in the second area; and the size of the pattern gradually increases to a third width extreme point, enters the third area, and gradually decreases to the second end; so that the diaphragm forms a first extreme point of the stiffness coefficient in the first area and a third extreme point of the stiffness coefficient in the third area, and forms a second extreme point of the stiffness coefficient in the second area, and the stiffness coefficient curve has a second extreme point in the second area that is higher than the first extreme point and the third extreme point.

[0025] In some embodiments, the aforementioned method also includes: obtaining a stiffness coefficient curve of a preset pattern, wherein the stiffness coefficient curve is used to characterize the stiffness distribution of the pattern along the extension direction; adjusting the size information of the pattern so that the stiffness value corresponding to the second size extreme point of the stiffness coefficient curve is greater than the stiffness value corresponding to the first extreme point and the stiffness value corresponding to the third extreme point.

[0026] In some embodiments, the method also includes: obtaining a magnetic factor curve of a speaker where a preset pattern is located, wherein the magnetic factor curve includes a peak area; based on the magnetic factor curve, adjusting the size information of the preset pattern so that the second extreme point is located in the peak area of ​​the magnetic factor curve.

[0027] In some embodiments, the method further includes: adjusting size information of the first region, the second region, and the third region based on the magnetic factor curve and the stiffness coefficient curve, so that the magnetic factor curve and the stiffness coefficient curve overlap in the second region.

[0028] In some embodiments, the dimension information includes one or more of width, depth, cross-sectional area, and cross-sectional length.

[0029] In some embodiments, when the size information includes two or more types, the size information is adjusted separately so that the stiffness coefficient curve of the adjusted diaphragm conforms to the preset magnetic factor curve, wherein the size information individually corresponds to the respective first area, second area and third area.

[0030] In some embodiments, a stiffness coefficient curve of a preset pattern is obtained, wherein the stiffness coefficient curve is used to display the stiffness distribution of the pattern along the extension direction; the width and / or depth of the pattern is adjusted so that the stiffness value corresponding to the second value point of the stiffness coefficient curve is greater than the stiffness value corresponding to the first extreme value point and the stiffness value corresponding to the third extreme value point.

[0031] In the disclosed embodiment, the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area. Along the extension direction of the pattern, the size information of the pattern starts from the first area, the first end gradually increases to the first size extreme point, and enters the second area; the size information of the pattern gradually decreases to the second size extreme point in the second area; and the size information of the pattern gradually increases to the third size extreme point, enters the third area, and gradually decreases to the second end. The pattern on the diaphragm has a higher matching degree with the magnetic factor curve Bl in terms of flatness in its corresponding stiffness coefficient curve, thereby reducing distortion.

[0032] Furthermore, when the shape of the vibration part is a circular ring, the pattern is arranged to be evenly distributed along the folded ring; when the shape of the vibration part is a polygon, the pattern is arranged at the angle between adjacent sides of the polygon, so as to release the stress on the folded ring and thereby improve the durability and stability of the diaphragm. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] By reading the detailed description below with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0034] Figure 1 An exemplary application scenario of the disclosed embodiment is shown;

[0035] Figure 2a A partial cross-sectional view in the width direction of a diaphragm of the related art is shown;

[0036] Figure 2b A partial cross-sectional view in the depth direction of a diaphragm of the related art is shown;

[0037] Figure 3 A schematic diagram of the three-dimensional structure of the diaphragm of the embodiment of the present disclosure is shown;

[0038] Figure 4 A partial cross-sectional view of a diaphragm according to an embodiment of the present disclosure is shown;

[0039] Figure 5 A partial cross-sectional view of a diaphragm according to another embodiment of the present disclosure is shown;

[0040] Figure 6 A schematic diagram showing a comparison of stiffness coefficients of two folding membranes provided by the disclosed embodiment is shown;

[0041] Figure 7 A schematic diagram comparing the distortion characteristics of two folding membranes provided by the disclosed embodiment is shown;

[0042] Figure 8 An exemplary flow chart showing a method 800 for manufacturing a diaphragm according to an embodiment of the present disclosure;

[0043] Figure 9a An example diagram showing a Kms curve of an embodiment of the present disclosure;

[0044] Figure 9b An example diagram showing a Bl curve of an embodiment of the present disclosure;

[0045] Fig.10a Shown are schematic diagrams of patterns of some embodiments of the present disclosure;

[0046] Fig.10b Bl graphs of some embodiments of the present disclosure are shown. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0048] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0049] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0050] As used in this specification and claims, the term "if" may be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" may be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.

[0051] The specific implementation of the present disclosure is described in detail below with reference to the accompanying drawings.

[0052] Figure 1 An exemplary application scenario of the disclosed embodiment is shown. Figure 1 As shown in the figure, the fully open wearable headphones (OpenWearable Stereo, OWS) adopt a fully open design and are not worn in the ears. The sound can be sent into the ears through directional unit technology. This design makes the headphones not produce a sense of pressure on the ear canal when worn, and is more comfortable. In addition, the OWS headphones will not isolate external sounds, and users can sense changes in the surrounding environment at any time when wearing them, which improves safety. However, during the wearing process of OWS, since the sound-emitting part is at a certain distance from the ear canal and will not enter the ear canal, this may affect the sound quality of the headphones. The diaphragm is a key component for sound generation in headphones. The diaphragm can be set to reduce sound distortion so that users can get a better experience.

[0053] Figure 2a A partial cross-sectional view in the width direction of a diaphragm of the related art is shown; Figure 2b A partial cross-sectional view of the diaphragm of the related art in the depth direction is shown. The inventors of the present application have found that, along the direction from the center of the diaphragm to the outside of the diaphragm, it can be seen that the width of the aforementioned pattern can change from narrow to wide and then narrower, and the depth of the aforementioned pattern can change from shallow to deep and then shallower, that is, the depth of the aforementioned pattern can be narrow on both sides and wide in the middle; the depth of the aforementioned pattern can be shallow on both sides and deep in the middle. This will cause the stiffness coefficient curve Kms corresponding to the aforementioned pattern to have a poor match with the magnetic factor curve Bl in terms of flatness. Since the stiffness coefficient curve Kms can show the rigidity of the pattern, the aforementioned rigidity can represent the ability to resist deformation when subjected to external force. Since the rigidity changes with the displacement, this relationship may cause the speaker to produce distortion when playing audio signals.

[0054] In some embodiments of the present application, the aforementioned stiffness coefficient Kms curve can represent the stiffness value at each position, that is, the rigidity value. The aforementioned stiffness coefficient Kms can change with the change of displacement. The aforementioned stiffness coefficient Kms curve of the pattern can characterize the rigidity of the pattern at different positions. Specifically, when the voice coil is at the starting position, it is in a balanced state, and the aforementioned diaphragm is also at the starting position. Generally, no tensile force / compression force is received at this time, so the stiffness coefficient Kms at this time is generally small. When the voice coil moves, the aforementioned diaphragm will also move, and at this time it will receive tensile force / compression force, and the stiffness coefficient Kms will become larger. The aforementioned magnetic factor curve is the coupling between the mechanical and electrical of the electric transducer. This parameter is the integral value of the magnetic flux density B along the length direction l of the voice coil. The magnetic factor curve Bl is a function related to the displacement of the voice coil. Specifically, when designing a loudspeaker, after determining the voice coil and the magnetic field, the magnetic factor curve Bl corresponding to the aforementioned loudspeaker can be determined. When the voice coil is located at the starting position, generally, the magnetic flux density B is the largest and its corresponding magnetic factor Bl is the largest. When the voice coil vibrates upward or downward, the magnetic field will weaken, thereby reducing the magnetic flux density B and thus reducing the magnetic factor Bl.

[0055] In some embodiments, the more the stiffness coefficient curve Kms and the magnetic factor curve Bl overlap, the less the degree of distortion. When the stiffness coefficient curve Kms and the magnetic factor curve Bl completely overlap, the degree of distortion is the least.

[0056] Figure 3 A schematic diagram of the three-dimensional structure of the diaphragm of the embodiment of the present disclosure is shown; Figure 4 FIG. 2 shows a partial cross-sectional view of the diaphragm of the disclosed embodiment. Figure 3 and Figure 4 The present invention provides a diaphragm, the diaphragm 100 comprising: a vibration part 120, and a folding ring 110 surrounding the edge of the vibration part 120, wherein a pattern 111 is formed on the surface of the folding ring 110, and the pattern 111 has rigidity and size information; the extension direction of the pattern is from a first end close to the vibration part 120 to a second end away from the vibration part 120; the pattern is divided into a first area 1111 and a third area 1113 along the extension direction, and a second area 1112 connecting the first area 1111 and the third area 1113; the change characteristics of the size information are: along the extension direction of the pattern, the size information of the pattern 111 starts from the first area 1111, gradually increases from the first end to a first size extreme point, and enters the second area 1112; the size information of the pattern 111 gradually decreases to a second size extreme point in the second area 1112; and the size information of the pattern 111 gradually increases to a third size extreme point, enters the third area 1113, and gradually decreases to the second end.

[0057] In this embodiment, the diaphragm may include a folded ring and a vibrating portion, and the folded ring may be provided with a pattern. In one embodiment, the diaphragm may be an important component of a microphone, which may convert electrical signals into mechanical energy and finally into sound wave signals. Specifically, the microphone may include a diaphragm, a magnet, a voice coil and other components. The magnet may provide the necessary magnetic field environment for the speaker, so that the voice coil is acted upon by a force in the magnetic field; the voice coil may be a coil wound on a lightweight cylindrical frame, and may be located in the magnetic field of the speaker. When an audio current passes through the voice coil, the voice coil may vibrate under the action of a force in the magnetic field, thereby driving the diaphragm to vibrate and produce sound.

[0058] The diaphragm may include a folded ring and a vibrating portion, and the vibrating portion may be a dome. When the diaphragm is subjected to force, the vibrating portion bears the load, and can achieve a change in displacement through tensile stress, that is, vibrate along the direction of the load. The folded ring may support and protect the diaphragm, so that when the force direction of the diaphragm is horizontal, the diaphragm is ensured not to move in this direction. Furthermore, the folded ring may be provided with a pattern, which may partially release the force on the diaphragm, thereby improving the durability and stability of the diaphragm, and further, may optimize the vibration mode of the diaphragm and reduce harmonic distortion.

[0059] In the present embodiment, the diaphragm 100 may include a folding ring 110 and a vibration part 120, and the vibration part 120 may be located inside the folding ring. When the diaphragm is subjected to force, the vibration part 120 may be used to bear the load, and specifically, it may achieve a change in displacement through tensile stress, that is, vibrate along the direction of the load. The folding ring 110 may be used to support and protect the diaphragm 100, so that when the force direction of the diaphragm 100 is horizontal, it is ensured that the diaphragm does not move in the horizontal direction. Furthermore, the folding ring 110 may be provided with a pattern 111, which may partially release the force on the diaphragm and improve the durability and stability of the diaphragm.

[0060] In this embodiment, the shape of the vibration part 120 may be circular or polygonal. When the shape of the vibration part 120 is circular, the pattern 111 may be evenly distributed along the folding ring 110. When the shape of the vibration part 120 is polygonal, the pattern may be arranged at the angle between adjacent sides of the polygon. Furthermore, the material of the vibration part 120 may be titanium metal, which may reduce distortion.

[0061] In this embodiment, the aforementioned folding ring 110 is arranged around the edge of the vibration part 120. It can be understood that when the shape of the aforementioned vibration part 120 is a circular ring or a polygon, the shape of the aforementioned folding ring can be a circular ring or a polygonal ring structure of the corresponding shape. The aforementioned folding ring 110 can be detachably connected to the aforementioned vibration part 120, or can be independently installed on the frame of the speaker. A plurality of patterns 111 can be formed on the surface of the aforementioned folding ring 110, wherein the length of the aforementioned pattern 111 can account for 70%-95% of the width of the aforementioned folding ring 110. It can be understood that the aforementioned folding ring 110 surface can form a pattern 111, wherein the aforementioned pattern can be produced by stamping and forming with a pre-designed mold together with the folding ring, or can be produced by using photolithography technology on the aforementioned folding ring 110 after obtaining the aforementioned folding ring 110. It should be understood that the aforementioned pattern 111 can have rigidity and size information, wherein the aforementioned rigidity can be characterized by a stiffness coefficient curve Kms, and the aforementioned rigidity can be used to show the ability to resist deformation when subjected to external force. The aforementioned dimension information may also include one or more of the width, depth, length of the cross section, cross-sectional area, and surface area of ​​the pattern. It should be understood that the aforementioned pattern dimension information may have a mapping relationship with the aforementioned rigidity, that is, when the width remains unchanged, the smaller the depth or cross-sectional area of ​​the aforementioned pattern, the greater the rigidity of the pattern; the larger the depth or cross-sectional area of ​​the aforementioned pattern, the smaller the rigidity of the pattern. When the depth remains unchanged, the smaller the width or cross-sectional area of ​​the aforementioned pattern, the greater the rigidity of the pattern; the larger the width or cross-sectional area of ​​the aforementioned pattern, the smaller the rigidity of the pattern.

[0062] The aforementioned folding ring 110 may include an annular raised area, the first end and the second end may be located on both sides of the raised area, and the aforementioned pattern may be convex or concave extending from the first end to the second end. It should be understood that the convex direction of the aforementioned annular raised area may be the direction opposite to the side of the folding ring 110 having the pattern 111, and the direction of the aforementioned annular concave may be the direction opposite to the side of the folding ring without the pattern. It can be understood that the aforementioned vibration part 120 may be located inside the aforementioned folding ring 110, and the aforementioned first end is closer to the aforementioned vibration part 120 than the aforementioned second end, so the aforementioned first end is closer to the inside of the aforementioned folding ring 110 than the aforementioned second end. In one embodiment, the aforementioned first end and the aforementioned second end may be points, straight lines and / or arc segments, and it can be understood that when the aforementioned first end and the aforementioned second end are both points, the aforementioned first end and the aforementioned second end point respectively coincide with the two end points of the pattern 111.

[0063] In the present embodiment, the extension direction of the aforementioned pattern 111 can be determined by the aforementioned first end and the aforementioned second end. Specifically, the extension direction of the aforementioned pattern can be from the first end close to the vibration part 120 to the second end away from the vibration part 120. The direction of the aforementioned pattern can also be from the aforementioned second end to the aforementioned first end. Optionally, the extension direction of the pattern of the disclosed embodiment is from the first end to the second end. It can be understood that the extension direction of the aforementioned pattern can be perpendicular to the width direction of the pattern, and the cross-section of the aforementioned pattern along the width direction can be arc-shaped, V-shaped or other shapes. Furthermore, the aforementioned pattern can be symmetrically arranged along the axis of the extension direction, which can be convenient for processing.

[0064] In this embodiment, along the extension direction of the aforementioned pattern, the aforementioned pattern can be divided into a first area 1111, a second area 1112 and a third area 1113. In this embodiment, along the extension direction of the aforementioned pattern, the size information of the aforementioned pattern 111 can start from the first area, gradually increase from the first end to the first size extreme point, and enter the second area; the size information of the aforementioned pattern 111 gradually decreases to the second size extreme point in the second area 1112; and the size information of the aforementioned pattern 111 gradually increases to the third size extreme point, enters the third area 1113, and gradually decreases to the second end. In this embodiment, the aforementioned size information can be one or more of the depth, width, length, cross-sectional area, and surface area of ​​the pattern. It can be understood that the depth of the aforementioned pattern can be the depth of the pattern obtained by cutting the pattern along the extension direction of the pattern. The width of the aforementioned pattern can be obtained by first projecting the pattern along the concave direction of the aforementioned fold ring to obtain a plane pattern, and the width of the aforementioned plane pattern perpendicular to the extension direction of the pattern can be the width of the aforementioned pattern. The surface area of ​​the pattern may be the surface area of ​​the plane pattern. The cross-sectional length of the pattern may be the length of the cross section in the width direction of the pattern after the pattern is cross-sectioned along the width direction. The cross-sectional area of ​​the pattern may be the area of ​​the cross section after the pattern is cross-sectioned along the width direction, which may be the boundary area of ​​the pattern.

[0065] In this embodiment, when the aforementioned dimension information is width, it can be understood that at this time, the dimension extreme point can be a width dimension extreme point. Specifically, in the extension direction of the pattern, the width of the pattern 111 can start from the first area, gradually increase from the first end to the first width extreme point, and enter the second area; the width of the pattern 111 gradually decreases to the second width extreme point in the second area 1112; and the width of the pattern 111 gradually increases to the third width extreme point, enters the third area 1113, and gradually decreases to the second end. It can be understood that in some embodiments, along the extension direction of the aforementioned pattern, the width of the aforementioned pattern can gradually increase in the first area 1111, first decrease and then increase in the second area 1112, and then gradually decrease in the third area 1113, wherein the gradual increase in the width of the aforementioned pattern can include the continuous increase in the width of the aforementioned pattern, and the gradual decrease in the width of the aforementioned pattern can include the continuous decrease in the width of the aforementioned pattern. It can be understood that the aforementioned folding ring may include a raised area, and the aforementioned second extreme point may be located at the top of the aforementioned raised area. When the rate at which the width of the aforementioned pattern continuously increases in the first area 1111 is the same as the rate at which the width of the aforementioned pattern continuously decreases in the third area 1113, and the rate at which the width of the aforementioned pattern continuously increases in the second area 1112 is the same as the rate at which it continuously decreases, then the aforementioned first area 1111 and the aforementioned third area 1113 may be symmetrical about the aforementioned second width extreme point.

[0066] In this embodiment, when the aforementioned dimension information is depth, it can be understood that at this time, the dimension extreme point can be a depth extreme point. Specifically, in the extension direction of the pattern, the depth of the pattern 111 can start from the first area, gradually increase from the first end to the first depth extreme point, and enter the second area; the depth of the pattern 111 gradually decreases to the second depth extreme point in the second area 1112; and the depth of the pattern 111 gradually increases to the third depth extreme point, enters the third area 1113, and gradually decreases to the second end. It can be understood that in some embodiments, along the extension direction of the aforementioned pattern, the depth of the aforementioned pattern can gradually increase in the first area 1111, first decrease and then increase in the second area 1112, and then gradually decrease in the third area 1113, wherein the gradual increase in the depth of the aforementioned pattern can include the continuous increase in the depth of the aforementioned pattern, and the gradual decrease in the depth of the aforementioned pattern can include the continuous decrease in the depth of the aforementioned pattern. It can be understood that the aforementioned folding ring may include a raised area, and the aforementioned second extreme point may be located at the top of the aforementioned raised area. When the rate at which the depth of the aforementioned pattern continuously increases in the first area 1111 is the same as the rate at which the depth of the aforementioned pattern continuously decreases in the third area 1113, and the rate at which the depth of the aforementioned pattern continuously increases in the second area 1112 is the same as the rate at which it continuously decreases, then the aforementioned first area 1111 and the aforementioned third area 1113 may be symmetrical about the aforementioned second depth extreme point.

[0067] In this embodiment, when the aforementioned dimension information is the cross-sectional length, it can be understood that at this time, the dimension extreme point can be the cross-sectional length extreme point. Specifically, in the extension direction of the pattern, the length of the cross section of the pattern 111 can start from the first region, gradually increase from the first end to the first cross-sectional length extreme point, and enter the second region; the cross-sectional length of the pattern 111 gradually decreases to the second cross-sectional length extreme point in the second region 1112; and the cross-sectional length of the pattern 111 gradually increases to the third cross-sectional length extreme point, enters the third region 1113, and gradually decreases to the second end. It can be understood that in some embodiments, along the extension direction of the aforementioned pattern, the cross-sectional length of the aforementioned pattern can gradually increase in the first region 1111, first decrease and then increase in the second region 1112, and then gradually decrease in the third region 1113, wherein the gradual increase in the cross-sectional length of the aforementioned pattern can include the continuous increase in the cross-sectional length of the aforementioned pattern, and the gradual decrease in the cross-sectional length of the aforementioned pattern can include the continuous decrease in the cross-sectional length of the aforementioned pattern. It can be understood that the aforementioned folding ring may include a raised area, and the aforementioned second extreme point may be located at the top of the aforementioned raised area. When the rate at which the cross-sectional length of the aforementioned pattern continuously increases in the first area 1111 is the same as the rate at which the cross-sectional length of the aforementioned pattern continuously decreases in the third area 1113, and the rate at which the cross-sectional length of the aforementioned pattern continuously increases in the second area 1112 is the same as the rate at which it continuously decreases, then the aforementioned first area 1111 and the aforementioned third area 1113 may be symmetrical about the aforementioned second cross-sectional length extreme point.

[0068] In this embodiment, when the aforementioned dimension information is a cross-sectional area, it can be understood that at this time, the dimension extreme point can be a cross-sectional positive value point. Specifically, in the extension direction of the pattern, the cross-sectional area of ​​the pattern 111 can start from the first region, gradually increase from the first end to the first cross-sectional positive value point, and enter the second region; the cross-sectional area of ​​the pattern 111 gradually decreases to the second cross-sectional positive value point in the second region 1112; and the cross-sectional area of ​​the pattern 111 gradually increases to the third cross-sectional positive value point, enters the third region 1113, and gradually decreases to the second end. It can be understood that in some embodiments, along the extension direction of the aforementioned pattern, the cross-sectional area of ​​the aforementioned pattern can gradually increase in the first region 1111, first decrease and then increase in the second region 1112, and then gradually decrease in the third region 1113, wherein the gradual increase in the cross-sectional area of ​​the aforementioned pattern can include the continuous increase in the cross-sectional area of ​​the aforementioned pattern, and the gradual decrease in the cross-sectional area of ​​the aforementioned pattern can include the continuous decrease in the cross-sectional area of ​​the aforementioned pattern. It can be understood that the aforementioned folding ring may include a raised area, and the aforementioned second extreme point may be located at the top of the aforementioned raised area. When the rate at which the cross-sectional area of ​​the aforementioned pattern continuously increases in the first area 1111 is the same as the rate at which the cross-sectional area of ​​the aforementioned pattern continuously decreases in the third area 1113, and the rate at which the cross-sectional area of ​​the aforementioned pattern continuously increases in the second area 1112 is the same as the rate at which it continuously decreases, then the aforementioned first area 1111 and the aforementioned third area 1113 may be symmetrical about the aforementioned second cross-sectional positive extreme point.

[0069] In this embodiment, when the aforementioned dimension information is the surface area, it can be understood that at this time, the dimension extreme point can be the surface area dimension extreme point. Specifically, in the extension direction of the pattern, the surface area of ​​the pattern 111 can start from the first region, gradually increase from the first end to the first surface positive value point, and enter the second region; the surface area of ​​the pattern 111 gradually decreases to the second surface positive value point in the second region 1112; and the surface area of ​​the pattern 111 gradually increases to the third surface positive value point, enters the third region 1113, and gradually decreases to the second end. It can be understood that in some embodiments, along the extension direction of the aforementioned pattern, the surface area of ​​the aforementioned pattern can gradually increase in the first region 1111, first decrease and then increase in the second region 1112, and then gradually decrease in the third region 1113, wherein the gradual increase in the surface area of ​​the aforementioned pattern can include the continuous increase in the surface area of ​​the aforementioned pattern, and the gradual decrease in the surface area of ​​the aforementioned pattern can include the continuous decrease in the surface area of ​​the aforementioned pattern. It can be understood that the aforementioned folding ring may include a raised area, and the aforementioned second extreme point may be located at the top of the aforementioned raised area. When the rate at which the surface area of ​​the aforementioned pattern continuously increases in the first area 1111 is the same as the rate at which the surface area of ​​the aforementioned pattern continuously decreases in the third area 1113, and the rate at which the surface area of ​​the aforementioned pattern continuously increases in the second area 1112 is the same as the rate at which it continuously decreases, then the aforementioned first area 1111 and the aforementioned third area 1113 may be symmetrical about the aforementioned second surface positive extreme point.

[0070] It should be understood that the aforementioned folding ring may have rigidity, and the aforementioned rigidity may be characterized by a stiffness coefficient curve Kms, and the aforementioned rigidity may be used to show the ability to resist deformation when subjected to external force. The aforementioned rigidity may be characterized by dimensional information, and on a cross section perpendicular to the extension direction of the pattern, when the rigidity is greater, the aforementioned pattern cross-sectional area / cross-sectional length may be smaller, wherein the aforementioned cross-sectional area / cross-sectional length may be determined by the pattern width and depth in the dimensional information.

[0071] It is understandable that, since the aforementioned rigidity and the size information of the pattern have a mapping relationship, when the size information of the pattern changes, the corresponding rigidity value can also change synchronously, and the rigidity value can be presented by the stiffness coefficient curve Kms. Therefore, along the extension direction of the aforementioned pattern, when the size information of the aforementioned pattern changes, the rigidity value corresponding to the aforementioned pattern also changes, and at this time, the stiffness coefficient curve Kms corresponding to the aforementioned pattern also changes.

[0072] When the change of the pattern size information is known, the change of the rigidity value of the pattern on the stiffness coefficient curve Kms can be obtained. Specifically, in the scheme disclosed herein, when the size information of the aforementioned pattern starts from the first area 1111 and gradually increases from the first end to the first width extreme point along the extension direction of the pattern, its corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the second area 1112, when the size information of the pattern gradually decreases in the second area 1112 to the second width extreme point, its corresponding rigidity value gradually increases on the stiffness coefficient curve Kms. When the size information of the pattern gradually increases to the third width extreme point, its corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the third area 1113, the aforementioned size information gradually decreases to the second end, and its corresponding rigidity value gradually increases on the stiffness coefficient, that is, in the second area 1112, the rigidity of the aforementioned pattern 110 can first increase and then decrease on the stiffness coefficient curve Kms.

[0073] After obtaining the change in the rigidity value of the pattern on the stiffness coefficient curve Kms, it is possible to determine whether the distortion of the diaphragm 100 is serious based on the magnetic factor curve Bl of the speaker where the diaphragm 100 is located. Specifically, the magnetic factor curve Bl of the aforementioned speaker increases first and then decreases. At this time, the force on the pattern on the diaphragm along the direction in which the pattern extends also increases first and then decreases. Therefore, when the diaphragm 100 is in operation, the stiffness coefficient curve Kms corresponding to the pattern on the diaphragm 100 has a higher matching degree with the magnetic factor curve Bl in terms of flatness, thereby reducing distortion.

[0074] In this embodiment, the ratio of the first width extreme point, the second width extreme point and the third width extreme point can be determined according to the stiffness coefficient curve Kms and the magnetic factor curve Bl. Specifically, the ratio of the first width extreme point to the second width extreme point can be 10:1-1:1; and / or the ratio of the third width extreme point to the second width extreme point can be 10:1-1:1. Optionally, the ratio of the first width extreme point to the second width extreme point can be 10:1, and the ratio of the third width extreme point to the second width extreme point can also be 10:1. Further, the lengths of the first area 1111, the second area 1112 and the third area 1113 can be determined based on the length of the pattern, the stiffness coefficient curve Kms and the magnetic factor curve Bl of the speaker, wherein the length of the first area 1111 can account for 25%-35% of the pattern length, the length of the second area 1112 can account for 30%-50% of the pattern length, the length of the third area 1113 can account for 25%-35% of the pattern length, the length of the pattern can include the distance from the first end to the second end of the pattern, wherein the length of the pattern 111 can account for 70%-90% of the width of the folding ring 110.

[0075] In this embodiment, the size information of the pattern 111 can be determined by the stiffness coefficient curve Kms, wherein the stiffness coefficient curve Kms has a first extreme point, a third extreme point and a second extreme point of the stiffness coefficient curve Kms in the first area 1111, the third area 1113 and the second area 1112 respectively, wherein the second extreme point of the stiffness coefficient curve Kms is greater than the first extreme point and the third extreme point, wherein the folding ring 110 has rigidity, and the rigidity is characterized by the size information. On the cross section perpendicular to the extension direction of the pattern, the greater the rigidity, the smaller the cross-sectional area / cross-sectional length of the pattern 111.

[0076] In some embodiments, the aforementioned rigidity can be characterized by the aforementioned cross-sectional area / cross-sectional length. It can be understood that the smaller the aforementioned cross-sectional length / cross-sectional area, the harder it is for the aforementioned pattern to deform when the diaphragm vibrates, and it will present a concave shape in the stiffness coefficient curve Kms; the larger the aforementioned cross-sectional length / cross-sectional area, the easier it is for the pattern to deform, and it will present a convex shape in the stiffness coefficient curve Kms as the voice coil displacement changes. Since the magnetic factor curve Bl also presents a convex shape as the voice coil displacement changes, the larger the aforementioned cross-sectional length / cross-sectional area, the more the corresponding stiffness coefficient curve Kms and the magnetic factor curve Bl fit, and the corresponding distortion can be alleviated.

[0077] In this embodiment, when the size information of the pattern is unknown, it can be determined based on the stiffness coefficient curve Kms. At this time, the first size extreme point, the third size extreme point and the second size extreme point can be determined based on the first extreme point, the third extreme point and the second extreme point of the stiffness coefficient curve Kms in the first area 1111, the third area 1113 and the second area 1112. Among them, the second extreme point of the stiffness coefficient curve Kms can be greater than the first extreme point and the third extreme point, and similarly, the second size extreme point can be greater than the first size extreme point and the third size extreme point.

[0078] In some embodiments, the aforementioned second width extreme point may be located at the top of the fold ring raised area, and the first area 1111 and the third area 1113 may be symmetrical about the second width extreme point.

[0079] Figure 5 A partial cross-sectional view of a diaphragm 100 according to another embodiment of the present disclosure is shown. Figure 5As shown, when the size information is depth, the third area 1113, the third area 1113 and the second area 1112 are along the extension direction, the depth of the pattern starts from the first area 1111, gradually increases from the first end to the first depth extreme point, and enters the second area 1112; the depth of the pattern gradually decreases to the second depth extreme point in the second area 1112; and the depth of the pattern gradually increases to the third depth extreme point, enters the third area 1113, and gradually decreases to the second end.

[0080] In this embodiment, along the extension direction of the aforementioned pattern 111, the aforementioned pattern 111 can be divided into a first area 1111, a third area 1113, and a second area 1112 connecting the first area 1111 and the third area 1113, wherein the extension direction of the aforementioned pattern 111 can also be a direction from the first end to the second end. In one embodiment, along the extension direction of the aforementioned pattern 111, the depth of the aforementioned pattern 111 can gradually increase in the first area 1111, first decrease and then increase in the fifth area 1115, and then gradually decrease in the third area 1113, wherein the gradual increase in the depth of the aforementioned pattern 111 can include the depth of the aforementioned pattern 111 continuously increasing, and the gradual decrease in the depth of the aforementioned pattern 111 can include the depth of the aforementioned pattern 111 continuously decreasing. It can be understood that the aforementioned folding ring 110 can include a raised area, and the aforementioned second depth extreme point can be located at the top of the aforementioned raised area. When the rate at which the depth of the aforementioned pattern continuously increases in the first area 1111 is the same as the rate at which the width of the aforementioned pattern continuously decreases in the third area 1113, and the rate at which the width of the aforementioned pattern continuously increases in the second area 1112 is the same as the rate at which it continuously decreases, then the aforementioned first area 1111 and the aforementioned third area 1113 can be symmetrical about the aforementioned second width extreme point. It can be understood that the protrusion direction of the aforementioned annular raised area can be the direction opposite to the side of the folding ring 110 having the pattern 111.

[0081] In this embodiment, the change of the rigidity value of the pattern on the stiffness coefficient curve Kms can be obtained according to the change of the pattern size information. Specifically, in the scheme disclosed herein, when the size information of the aforementioned pattern starts from the first area 1111 and gradually increases from the first end to the first depth extreme point along the extension direction of the pattern, the corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the second area 1112, when the size information of the pattern gradually decreases in the second area 1112 to the second depth extreme point, the corresponding rigidity value gradually increases on the stiffness coefficient curve Kms. When the size information of the pattern gradually increases to the third depth extreme point, the corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the third area 1113, the aforementioned size information gradually decreases to the second end, and the corresponding rigidity value gradually increases on the stiffness coefficient curve Kms, that is, in the second area 1112, the rigidity of the aforementioned pattern 110 first increases and then decreases on the stiffness coefficient curve Kms. In this embodiment, the ratio of the aforementioned first depth extreme point to the second depth extreme point can be 5:1-1:1, and the ratio of the aforementioned third depth extreme point to the second depth extreme point can be 5:1-1:1. Optionally, the ratio of the aforementioned first depth extreme point to the second depth extreme point can be 5:1, and the ratio of the aforementioned third depth extreme point to the second depth extreme point can also be 5:1.

[0082] After obtaining the change in the rigidity value of the pattern on the stiffness coefficient curve Kms, it is possible to determine whether the distortion of the diaphragm 100 is serious based on the magnetic factor curve Bl of the speaker where the diaphragm 100 is located. Specifically, when the speaker where the diaphragm 100 is located is in a working state, the aforementioned magnetic factor curve Bl first increases and then decreases. At this time, the pattern on the diaphragm also first increases and then decreases on the Kms curve. Therefore, the stiffness coefficient curve Kms corresponding to the pattern on the diaphragm 100 in the working state has a higher matching degree with the magnetic factor curve Bl in terms of flatness, thereby reducing distortion.

[0083] In this embodiment, the first size information may be width, and the second size information may be depth. When the first area, the second area, and the third area corresponding to the first size information overlap with the first area, the second area, and the third area corresponding to the second size information, the first depth extreme point may overlap with the first width extreme point; and / or the second depth extreme point may also overlap with the second width extreme point; and / or the third depth extreme point may also overlap with the third width extreme point. It can be understood that when the first depth extreme point, the second depth extreme point, and the third depth extreme point simultaneously overlap with the first width extreme point, the second width extreme point, and the third width extreme point, the first area 1111, the second area 1112, and the third area 1113 simultaneously overlap with the first area 1111, the second area 1112, and the third area 1113. In the state of all overlap, the design can be simplified and the processing can be facilitated.

[0084] In some embodiments, when the multiple size information of the pattern meets the change characteristics of the size information, any two size information in the multiple size information correspond to the first area, the second area and the third area respectively, wherein the first area, the second area and the third area corresponding to the first group of size information overlap or partially overlap with the first area, the second area and the third area corresponding to the second group of size information. In one embodiment, the aforementioned any two size information correspond to the first area, the second area and the third area respectively, wherein the first area, the second area and the third area corresponding to the first group of size information and the first area, the second area and the third area corresponding to the second group of size information can completely overlap or partially overlap. In some embodiments, it is also possible to not overlap at all. When it is completely not overlapped, the first extreme point, the second extreme point and the third extreme point corresponding to the aforementioned first group of sizes and the first extreme point, the second extreme point and the third extreme point corresponding to the aforementioned second group of sizes do not overlap at all. In some embodiments, the aforementioned one size information can be adjusted to make it in an ideal state. However, when it fails to reach the ideal state, it can also be adjusted by superimposing the effects of other parameters to move the peak of the stiffness coefficient curve Kms to fit the peak area of ​​the magnetic factor curve Bl.

[0085] In some embodiments, the shape of the vibrating part 120 may be circular or polygonal. When the shape of the fold is circular, the pattern may be evenly distributed along the fold; when the shape of the fold is polygonal, the pattern may be arranged at the angle between adjacent sides of the polygon. It is understandable that, since the deformation of each corner of the polygonal diaphragm is the largest when subjected to force, the pattern may be arranged at the angle between adjacent sides of the polygon, which may extend the durability and stability of the diaphragm.

[0086] In some embodiments, the aforementioned second depth extreme point is located at the top of the fold ring protrusion area, and the first area 1111 and the third area 1113 can be symmetrical about the second depth extreme point.

[0087] Figure 6 A schematic diagram comparing the stiffness coefficient curves Kms of two folded ring membranes provided by the disclosed embodiment is shown. It can be understood that the aforementioned stiffness coefficient curve Kms can show the rigidity of the pattern, and the rigidity can represent the ability to resist deformation when subjected to external force. Since the rigidity changes with the displacement, this relationship may cause the speaker to produce distortion when playing audio signals. Specifically, when the speaker is stimulated by a complex audio signal, its displacement will change over time, causing the rigidity value to also change. This change may cause the driving force generated by the speaker at different times to be inconsistent with the expected value, thereby generating harmonic distortion or intermodulation distortion, resulting in higher distortion.

[0088] like Figure 6 As shown, the stiffness coefficient curve Kms of the related technical solution decreases first and then increases from left to right, while the stiffness coefficient curve Kms of the disclosed solution increases first and then decreases, and finally increases slightly from left to right. It can be understood that when the size information is width, the disclosed solution follows the extension direction of the pattern, and the size information of the aforementioned pattern starts from the first area 1111, gradually increases from the first end to the first width extreme point, and its corresponding stiffness value gradually decreases on the stiffness coefficient curve Kms; after entering the second area 1112, when the size information of the pattern gradually decreases in the second area 1112 to the second width extreme point, its corresponding stiffness value gradually increases on the stiffness coefficient curve Kms. When the size information of the pattern gradually increases to the third width extreme point, the corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the third region 1113, the size information gradually decreases to the second end, and the corresponding rigidity value gradually increases on the stiffness coefficient. From the first region to the third region, the rigidity of the pattern 110 can be characterized as first decreasing, then increasing, then decreasing, and finally increasing on the stiffness coefficient curve Kms. In the second region 1112, the rigidity of the pattern 110 can be characterized as first increasing and then decreasing on the stiffness coefficient curve Kms.

[0089] When the size information is depth, the size information of the aforementioned pattern starts from the first region 1111, gradually increases from the first end to the first depth extreme point, and its corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the second region 1112, the size information of the pattern gradually decreases to the second width extreme point in the second region 1112, and its corresponding rigidity value gradually increases on the stiffness coefficient curve Kms. When the size information of the pattern gradually increases to the third depth extreme point, its corresponding rigidity value gradually decreases on the stiffness coefficient curve Kms; after entering the third region 1113, the aforementioned size information gradually decreases to the second end, and its corresponding rigidity value gradually increases on the stiffness coefficient. From the fourth region to the sixth region, the rigidity of the aforementioned pattern 110 on the stiffness coefficient curve Kms can be characterized as first decreasing, then increasing, then decreasing, and finally increasing. In the second region 1112, the rigidity of the aforementioned pattern 110 on the stiffness coefficient curve Kms can be characterized as first increasing and then decreasing.

[0090] It should be understood that the trend of the magnetic factor curve Bl from left to right is to increase first and then decrease. Since the rigidity of the present application solution in the second region can also be characterized as increasing first and then decreasing on the stiffness coefficient curve Kms, the stiffness coefficient curve Kms of the present application solution is more matched with the magnetic factor curve Bl in terms of flatness compared to the stiffness coefficient curve Kms of the related art solution, so the distortion can be improved.

[0091] Figure 7 A schematic diagram comparing the distortion characteristics of two fold rings provided in the embodiment of the disclosure is shown. Figure 7 The horizontal axis can represent the frequency, and the vertical axis can represent the distortion. Figure 9a An example diagram showing a Kms curve of an embodiment of the present disclosure; Figure 9b An example diagram of the Bl curve of the embodiment of the present disclosure is shown, wherein: Figure 9a The horizontal axis can represent the displacement, and the vertical axis can represent the size of Kms. It can be understood that the solution of the present application makes the size information of the pattern increase first, then decrease, then increase again, and finally decrease again by designing the width and / or depth, so that the rigidity of the pattern can be characterized as first decrease, then increase, then decrease, and finally increase on the stiffness coefficient curve Kms. Specifically, as Figure 9a As shown, the Kms curve of the present disclosure gradually decreases in the first region, increases first and then decreases in the second region, and increases again in the third region. In contrast, Figure 9b It shows that the Bl curve of the speaker can increase first and then decrease. Therefore, in the second area of ​​the pattern, its corresponding Kms curve is more matched with the Bl curve of the speaker in terms of flatness. Figure 7It can be seen that the distortion of the disclosed solution is different from that of the related art. Specifically, as shown in the figure, the distortion curve of the related art solution will peak between 50-200HZ, and the maximum distortion will exceed 15%; the distortion of the solution of the present application can be controlled very low after 20HZ, always within 10%, so the use of the solution of the present invention can improve the distortion.

[0092] The present disclosure also provides a diaphragm 100, which may include: a vibration part, and a folding ring surrounding the edge of the vibration part, wherein a pattern is formed on the surface of the folding ring, the pattern has rigidity and size information, and the extension direction of the pattern is from the first end close to the vibration part to the second end away from the vibration part; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area; the pattern is formed according to a stiffness coefficient curve Kms and a magnetic factor curve Bl of the speaker, wherein the stiffness coefficient curve Kms is used to show the rigidity of the pattern; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area, and the pattern has a first extreme point, a third extreme point and a second extreme point in the first area, the third area and the second area respectively, wherein the second extreme point is greater than the first extreme point and the third extreme point, wherein the rigidity is characterized by size information, and on a cross section perpendicular to the extension direction of the pattern, the greater the rigidity, the smaller the cross-sectional area / cross-sectional length of the pattern.

[0093] It is understandable that the cross-sectional area of ​​the aforementioned pattern can be characterized by the size information of the pattern, wherein the aforementioned size information can include one or more of the depth, width, length of the cross section, cross-sectional area, and surface area of ​​the pattern. Wherein, when the size information of the pattern is width and depth, when the depth of the pattern remains unchanged, the smaller the width of the aforementioned pattern, the greater the rigidity of the aforementioned pattern, and the larger the width, the smaller the rigidity of the aforementioned pattern. Similarly, when the width of the pattern remains unchanged, the smaller the depth of the aforementioned pattern, the greater the rigidity of the aforementioned pattern, and the larger the depth, the smaller the rigidity of the aforementioned pattern. In one embodiment, the aforementioned pattern may include a first area 1111, a second area 1112, and a third area 1113 and corresponding first extreme points, second extreme points, and third extreme points. Based on the relationship between the aforementioned width and / or depth and the rigidity of the pattern, the width and depth of the aforementioned pattern in the first area, the second area 1112, and the third area 1113 can be determined according to the stiffness coefficient curve Kms and the magnetic factor curve Bl of the speaker.

[0094] In one embodiment, the aforementioned dimension information may also include one or more of depth, width, length of a cross section, cross-sectional area, and surface area, and the aforementioned dimension information may characterize the rigidity of the diaphragm. In one embodiment, the greater the rigidity, the more deformation space can be provided when the diaphragm vibrates. By using the aforementioned dimension information to characterize the parameters of the position, the position with greater rigidity can be intuitively found, thereby facilitating processing.

[0095] In some embodiments, the solution of the present invention can be used in electronic devices with speakers, such as true wireless stereo headphones (True Wireless Stereo, TWS), in-ear, semi-in-ear, head-mounted headphones, open headphones, smart glasses, mobile phones, tablets, speakers, etc., especially open headphones, smart glasses, AR / VR / MR head-mounted display devices, etc., because the aforementioned open headphones are not in contact with the ear canal when worn on the ears, and the distance between the speaker and the ear canal is long, so the sound quality of the headphones has a greater impact on the user, so that the distortion affects the hearing more, and the requirements for acoustics are higher. Specifically, the solution of the present invention can be used in smart glasses with speakers. In some embodiments, the speakers of the aforementioned smart glasses can be arranged on the temples of the glasses frame. It can be understood that in the wearing state, the temples can be placed above the ears. At this time, the sound outlet of the aforementioned speaker is far away from the ear canal, and the sound quality of the sound may be reduced during the propagation of the sound. By using a speaker with a diaphragm of the present invention on the aforementioned smart glasses, the distortion of the sound signal can be reduced, thereby improving the user's hearing.

[0096] The disclosed embodiment also provides a folding ring having a pattern formed on its surface; the pattern extends from a first end close to the vibration part toward a second end away from the vibration part; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area.

[0097] Figure 8 A schematic flow chart of a method 800 for manufacturing a diaphragm according to an embodiment of the present disclosure is shown. Figure 8 As shown, the method may include: S810, providing a folded ring surrounding the vibration part, wherein the folded ring has rigidity, and the rigidity is characterized by size information; S820, arranging the vibration part on the folded ring; S830, forming a pattern on the surface of the folded ring; wherein the extension direction of the pattern is from the first end close to the vibration part to the direction of the second end away from the vibration part; the pattern is divided into a first area and a third area along the extension direction, and a second area connecting the first area and the third area.

[0098] In one embodiment, the pattern is divided into a first area 1111 and a third area 1113 along the extension direction, and a second area 1112 connecting the first area 1111 and the third area 1113; along the extension direction of the pattern, the size information of the pattern starts from the first area 1111, the first end gradually increases to the first size extreme point, and enters the second area 1112; the size information of the pattern gradually decreases to the second size extreme point in the second area 1112; and the size of the pattern gradually increases to the third width extreme point, enters the third area 1113, and gradually decreases to the second end; so that the diaphragm forms a first extreme point of the stiffness coefficient in the first area 1111 and a third extreme point of the stiffness coefficient in the third area 1113, and a second extreme point of the stiffness coefficient in the second area 1112, and the stiffness coefficient curve Kms is higher than the first extreme point and the third extreme point at the second extreme point in the second area 1112.

[0099] It is understandable that the aforementioned folding ring 110 can be detachably connected to the aforementioned vibration part 120, or can be independently installed on the frame of the speaker. The aforementioned vibration part 120 can also be independently installed on the frame of the speaker. In one embodiment, the aforementioned vibration part can be made of titanium metal material.

[0100] In one embodiment, the aforementioned pattern 111 may have rigidity and size information, wherein the aforementioned rigidity may be characterized by a stiffness coefficient curve Kms, and the aforementioned rigidity may be used to display the ability to resist deformation when subjected to external force. The aforementioned size information may also include one or more of width, depth, cross-sectional area, and cross-sectional length. It should be understood that the aforementioned pattern size information may have a mapping relationship with the aforementioned rigidity. When the size information includes width, depth, and cross-sectional area, when the width remains unchanged, the smaller the depth or area of ​​the aforementioned pattern, the greater the rigidity of the pattern; the larger the depth or cross-sectional area of ​​the aforementioned pattern, the smaller the rigidity of the pattern. When the depth remains unchanged, the smaller the width or cross-sectional area of ​​the aforementioned pattern, the greater the rigidity of the pattern; the larger the width or cross-sectional area of ​​the aforementioned pattern, the smaller the rigidity of the pattern.

[0101] In one embodiment, the aforementioned method may include: obtaining a stiffness coefficient curve Kms of a preset pattern, wherein the stiffness coefficient curve Kms is used to characterize the rigidity distribution of the pattern along the extension direction. Adjusting the size information of the pattern so that the rigidity value corresponding to the second extreme point of the stiffness coefficient curve Kms is greater than the rigidity value corresponding to the first extreme point and the rigidity value corresponding to the third extreme point; obtaining a magnetic factor curve Bl of the speaker where the preset pattern is located, wherein the magnetic factor curve Bl includes a peak area; based on the magnetic factor curve, adjusting the size information of the preset pattern so that the second extreme point is located in the peak area of ​​the magnetic factor curve. In some embodiments, the aforementioned preset pattern is provided on a diaphragm, and the diaphragm may be provided in the aforementioned speaker. In some embodiments, the aforementioned peak area may include an area 15% before the peak point and 15% after the peak point.

[0102] In some embodiments, if the stiffness value corresponding to the second width extreme point of the aforementioned stiffness coefficient curve Kms is less than the aforementioned first extreme point, the width value of the second area can be reduced or the width value of the first area can be increased; if the stiffness value corresponding to the second width extreme point of the aforementioned stiffness coefficient curve Kms is less than the aforementioned third extreme point, the width value of the second area can be reduced or the width value of the third area can be increased. In some embodiments, the magnetic factor curve Bl of the speaker and the stiffness coefficient curve Kms of the pattern can be obtained by the KLIPPEL tool. Further, the aforementioned adjustment of the width of the pattern can include adjusting the width of the aforementioned pattern using photolithography technology.

[0103] In one embodiment, the aforementioned method may further include adjusting the size information of the first region, the second region, and the third region based on the magnetic factor curve Bl and the stiffness coefficient curve Kms, so that the magnetic factor curve Bl and the stiffness coefficient curve Kms overlap in the second region. In some embodiments, if the aforementioned second width extreme point is located on the left side of the peak point close to the origin, the second width extreme point can be adjusted so that it moves away from the first end and close to the second end, that is, moves along the pattern direction; if the aforementioned second width extreme point is located on the right side of the peak point away from the origin, the second width extreme point can be adjusted so that it moves close to the first end and away from the second end, that is, moves in the opposite direction of the pattern direction. In some embodiments, the aforementioned adjustment of the position of the second width extreme point may include adjusting the width of the interval near the aforementioned second width extreme point. In some embodiments, the aforementioned adjustment of the size information of the first area, the second area and the third area may include adjusting the positions of the aforementioned first extreme point and the second extreme point. Specifically, the size information in the interval near the aforementioned first extreme point and the aforementioned second extreme point may be adjusted, wherein the interval near the aforementioned first extreme point may include the first extreme point as the midpoint of the interval, and the length of the adjustment interval of the extreme point accounts for 5%-30% of the total length of the pattern; the interval near the aforementioned second extreme point may include the second extreme point as the midpoint of the interval, and the length of the interval accounts for 5%-30% of the total length of the pattern; the interval near the aforementioned third extreme point may include the third extreme point as the midpoint of the interval, and the length of the interval accounts for 5%-30% of the total length of the pattern.

[0104] In one embodiment, the dimension information includes one or more of width, depth, cross-sectional area, and cross-sectional length. It should be understood that when the dimension information includes two or more types, the dimension information is adjusted respectively so that the stiffness coefficient curve Kms of the adjusted diaphragm meets the preset magnetic factor curve Bl, wherein the dimension information corresponds to the respective first area, the second area, and the third area separately.

[0105] In one embodiment, the aforementioned method may further include obtaining a stiffness coefficient curve Kms of a preset pattern, wherein the stiffness coefficient curve Kms is used to display the stiffness distribution of the pattern along the extension direction; adjusting the width and / or depth of the pattern so that the stiffness value corresponding to the second value point of the stiffness coefficient curve Kms is greater than the stiffness value corresponding to the first extreme value point and the stiffness value corresponding to the third extreme value point.

[0106] The present disclosure also provides a loudspeaker including a diaphragm 100 of any example as described above. According to design requirements, the loudspeaker may further include components such as a magnet, a voice coil, a diaphragm plate, a support body, and the like.

[0107] Fig.10a Shown are schematic diagrams of patterns of some embodiments of the present disclosure; Fig.10bThe Bl curve diagram of some embodiments of the present disclosure is shown. It can be understood that when the stiffness coefficient curve Kms represented by the pattern is fitted with the magnetic factor curve Bl, the distortion is reduced. Therefore, based on the division of each partition of the first area, the second area, and the third area, one or more sub-areas can be set according to the curve to be fitted, so that the pattern formed by multiple sub-areas better fits the actual magnetic factor curve Bl.

[0108] like Fig.10b As shown, when the magnetic factor curve Bl is relatively flat in the peak interval, or has multiple peaks, in order to fit the magnetic factor curve Bl, multiple connected sub-areas can be set in the second area of ​​the pattern to form a flat or multiple-peak stiffness coefficient curve Kms in the corresponding part. Specifically, as Fig.10a and Fig.10b As shown, when the two peaks of the magnetic factor curve Bl are identical and symmetrical, the two sub-regions of the aforementioned second region can also be set as the same first sub-region and second sub-region, and the extreme point of the size of each sub-region corresponds to the peak area of ​​the magnetic factor curve Bl to achieve a better adaptation effect.

[0109] The present disclosure also provides an electronic device including a speaker of the example described above, and according to the design requirements, the electronic device may also include a central processing chip, a microphone and other components. Specifically, the aforementioned electronic device may include TWS headphones, in-ear, semi-in-ear, head-mounted headphones, open headphones, smart glasses, mobile phones, tablet computers, speakers, etc., especially open headphones, smart glasses, etc. Since the aforementioned open electronic devices are not in contact with the ear canal when worn on the ears, the sound quality of the headphones has a great impact on the user, so these devices have higher requirements for acoustics. In some embodiments, the solution of the present invention can be used in smart glasses with speakers, and the speakers of the aforementioned smart glasses can be set on the temples of the glasses frame. It can be understood that in the wearing state, the aforementioned temples can be placed above the ears. At this time, the sound outlet of the aforementioned speaker is far away from the ear canal, and in the process of sound propagation from the speaker to the human body, the phenomenon of sound quality degradation may occur. By using a speaker with a diaphragm of the present invention on the aforementioned smart glasses, the distortion of the sound signal can be reduced, thereby improving the user's hearing.

[0110] Although multiple embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may think of many changes, modifications, and alternatives without departing from the thought and spirit of the present disclosure. It should be understood that in the process of practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The attached claims are intended to define the scope of protection of the present disclosure, and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A diaphragm (100), the diaphragm (100) comprising: A vibration part (120), and a folding ring (110) surrounding the edge of the vibration part (120), wherein a pattern (111) is formed on the surface of the folding ring (110), and the pattern (111) has rigidity and size information; The extending direction of the pattern is from a first end portion close to the vibration portion (120) toward a second end portion away from the vibration portion (120); The pattern is divided into a first area (1111) and a third area (1113) along the extension direction, and a second area (1112) connecting the first area (1111) and the third area (1113); Along the extending direction of the pattern, The size information of the pattern (111) starts from the first area (1111), the first end gradually increases to the first size extreme point, and enters the second area (1112); The size information of the pattern (111) gradually decreases to a second size extreme value point in the second area (1112); and The size information of the pattern (111) gradually increases to a third size extreme point, enters a third area (1113), and gradually decreases to a second end.

2. The diaphragm according to claim 1, characterized in that: When the size information is width, along the extension direction of the pattern, The width information of the pattern (111) starts from the first area (1111), the first end gradually increases to the first width extreme point, and enters the second area (1112); The width information of the pattern (111) gradually decreases to a second width extreme value point in the second area (1112); and The width information of the pattern (111) gradually increases to a third width extreme point, enters a third region (1113), and gradually decreases to a second end.

3. The diaphragm (100) according to claim 2, characterized in that: The ratio of the first width extreme value point to the second width extreme value point is in the range of 10:1-1:1; and / or the ratio of the third width extreme value point to the second width extreme value point is in the range of 10:1-1:

1.

4. The diaphragm (100) according to claim 2, characterized in that: The folding ring includes an annular raised area, the first end and the second end are located on both sides of the raised area, and the pattern extends from the first end to the second end in a raised or recessed manner.

5. The diaphragm (100) according to claim 2, characterized in that: The second width extreme point is located at the top of the raised area of ​​the folded ring, and the first area (1111) and the third area (1113) are symmetrical about the second width extreme point.

6. The diaphragm according to any one of claims 1 to 5, characterized in that: The size information of the pattern (111) is determined by a stiffness coefficient curve, wherein the stiffness coefficient curve has a first extreme value point, a third extreme value point and a second extreme value point of the stiffness coefficient curve in the first area (1111), the third area (1113) and the second area (1112), respectively, wherein the second extreme value point of the stiffness coefficient curve is greater than the first extreme value point and the third extreme value point, The folding ring (110) has rigidity, and the rigidity is characterized by dimensional information. In a cross section perpendicular to the extension direction of the pattern, the greater the rigidity, the smaller the cross-sectional area / cross-sectional length of the pattern (111).

7. The diaphragm (100) according to claim 1, characterized in that: The length of the first region (1111) accounts for 25-35% of the pattern length, the length of the second region (1112) accounts for 30%-50% of the pattern length, and the length of the third region (1113) accounts for 25-35% of the pattern length.

8. The diaphragm (100) according to claim 1, characterized in that: The patterns are arranged symmetrically along the axis of the extending direction.

9. The diaphragm (100) according to claim 1, characterized in that: When the dimension information is depth, along the extension direction of the pattern, The depth information of the pattern (111) starts from the first area (1111), the first end gradually increases to a first depth extreme point, and enters the second area (1112); The depth information of the pattern (111) gradually decreases to a second depth extreme point in the second area (1112); and The depth information of the pattern (111) gradually increases to a third depth extreme point, enters a third region (1113), and gradually decreases to a second end.

10. The diaphragm (100) according to claim 1, characterized in that: The size information includes one or more of the depth, width, length of the cross section, cross-sectional area, and surface area of ​​the pattern; When multiple size information of the pattern meets the changing characteristics of the size information, any two of the multiple size information correspond to the first area, the second area and the third area respectively, wherein the first area, the second area and the third area corresponding to the first group of size information overlap or partially overlap with the first area, the second area and the third area corresponding to the second group of size information.

11. The diaphragm (100) according to claim 10, characterized in that: The first size information is width, the second size information is depth, and when the first area, the second area, and the third area corresponding to the first size information overlap with the first area, the second area, and the third area corresponding to the second size information, The first depth extreme point coincides with the first width extreme point; and / or The second depth extreme point coincides with the second width extreme point; and / or The third depth extreme point coincides with the third width extreme point.

12. The diaphragm (100) according to claim 9, characterized in that: The ratio of the first extreme depth point to the second extreme depth point is 5:1-1:1, and the ratio of the third extreme depth point to the second extreme depth point is 5:1-1:

1.

13. The diaphragm (100) according to claim 9, characterized in that: The second depth extreme point is located at the top of the raised area of ​​the folded ring, and the first area (1111) and the third area (1113) are symmetrical about the second depth extreme point.

14. The diaphragm (100) according to claim 1, characterized in that: The shape of the vibration part (120) is circular or polygonal; when the shape of the folded ring is circular, the pattern is evenly distributed along the folded ring; when the shape of the folded ring is polygonal, the pattern is arranged at the turning point of adjacent sides of the polygon.

15. A diaphragm (100), the diaphragm (100) comprising: A vibration part (120), and a folding ring (110) surrounding the edge of the vibration part (120), wherein a pattern (111) is formed on the surface of the folding ring (110), and the pattern (111) has rigidity and size information. The extending direction of the pattern is from a first end portion close to the vibration portion (120) toward a second end portion away from the vibration portion (120); The pattern is divided into a first area (1111) and a third area (1113) along the extension direction, and a second area (1112) connecting the first area (1111) and the third area (1113); The pattern is formed according to a stiffness coefficient curve and a magnetic factor curve, wherein the stiffness coefficient curve is used to show the rigidity of the pattern; the pattern is divided into a first area (1111) and a third area (1113) along an extension direction, and a second area (1112) connecting the first area (1111) and the third area (1113), The pattern has a first extreme point, a third extreme point and a second extreme point in the first area (1111), the third area (1113) and the second area (1112), respectively, wherein the second extreme point is larger than the first extreme point and the third extreme point, wherein the rigidity is characterized by dimensional information, and on a cross section perpendicular to an extension direction of the pattern, the greater the rigidity, the smaller the cross-sectional area / cross-sectional length of the pattern.

16. A folding ring, wherein a pattern is formed on the surface of the folding ring; The extending direction of the pattern is from a first end portion close to the vibration portion (120) toward a second end portion away from the vibration portion (120); The pattern is divided into a first area (1111) and a third area (1113) along the extension direction, and a second area (1112) connecting the first area (1111) and the third area (1113).

17. A loudspeaker, characterized in that: The loudspeaker is provided with a diaphragm (100) as claimed in any one of claims 1 to 14.

18. An electronic device, characterized in that: The electronic device comprises the speaker as claimed in claim 14.

19. A method for manufacturing a diaphragm (100), characterized in that: The method comprises: Providing a folding ring surrounding the vibration part (120), wherein the folding ring has rigidity, and the rigidity is characterized by dimensional information; A vibration part (120) is arranged on the folding ring; A pattern is formed on the surface of the folding ring; wherein, The extending direction of the pattern is from a first end portion close to the vibration portion (120) toward a second end portion away from the vibration portion (120); The pattern is divided into a first area (1111) and a third area (1113) along the extension direction, and a second area (1112) connecting the first area (1111) and the third area (1113); Along the extension direction of the pattern, the size information of the pattern starts from the first area (1111), the first end gradually increases to the first size extreme point, and enters the second area (1112); The size information of the pattern gradually decreases to a second size extreme point in the second area (1112); and The size of the pattern gradually increases to a third width extreme point, enters a third region (1113), and gradually decreases to a second end; The diaphragm forms a first extreme point of the stiffness coefficient in the first region (1111), a third extreme point of the stiffness coefficient in the third region (1113), and a second extreme point of the stiffness coefficient in the second region (1112); the second extreme point of the stiffness coefficient curve in the second region (1112) is higher than the first extreme point and the third extreme point.

20. The method according to claim 19, characterized in that The method further comprises: Obtaining a stiffness coefficient curve of a preset pattern, wherein the stiffness coefficient curve is used to characterize the rigidity distribution of the pattern along the extension direction; The size information of the pattern is adjusted so that the stiffness value corresponding to the second extreme point of the stiffness coefficient curve is greater than the stiffness value corresponding to the first extreme point and the stiffness value corresponding to the third extreme point.

21. The method according to claim 19, characterized in that The method further comprises: Obtaining a magnetic factor curve of the speaker where the preset pattern is located, wherein the magnetic factor curve includes a peak area; Based on the magnetic factor curve, the size information of the preset pattern is adjusted so that the second extreme point is located in the peak area of ​​the magnetic factor curve.

22. The method according to claim 19, characterized in that The method further comprises: Based on the magnetic factor curve and the stiffness coefficient curve, the size information of the first area, the second area and the third area is adjusted so that the magnetic factor curve and the stiffness coefficient curve overlap in the second area.

23. The method according to claim 19, characterized in that The size information includes one or more of width, depth, cross-sectional area, and cross-sectional length.

24. The method according to claim 23, characterized in that When the size information includes two or more types, the size information is adjusted respectively so that the adjusted stiffness coefficient curve of the diaphragm conforms to the preset magnetic factor curve, wherein the size information individually corresponds to the respective first area, second area and third area.

25. The method according to claim 23, characterized in that The method further comprises: Obtaining a stiffness coefficient curve of a preset pattern, wherein the stiffness coefficient curve is used to display the rigidity distribution of the pattern along the extension direction; The width and / or depth of the pattern is adjusted so that the stiffness value corresponding to the second value point of the stiffness coefficient curve is greater than the stiffness value corresponding to the first extreme value point and the stiffness value corresponding to the third extreme value point.

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