Vibrating diaphragm, sound production monomer and sound production module

Abstract

The invention discloses a vibrating diaphragm, a sound production monomer and a sound production module, and relates to the technical field of acoustic-electric conversion, the vibrating diaphragm vibrates along a first direction, the vibrating diaphragm comprises a reinforcing part and a folding ring, the folding ring comprises a folding ring part and an outer edge part which are sequentially connected along a second direction, the inner side of the folding ring part is connected with the reinforcing part, and the outer side of the folding ring part is connected with the outer edge part, the reinforcing part and the outer edge part are arranged in the second direction, the folding ring part is bent towards the first direction at least once from the reinforcing part to the outer edge part, and the first direction is different from the second direction; the folding ring part is divided into at least two vibration buffering sections which are sequentially connected end to end in the circumferential direction of the folding ring part, and the widths of the at least two vibration buffering sections in the second direction are not consistent. The polarization effect is improved by directly changing the width of the folding ring part, the width of the folding ring is controllable, the width of the folding ring can be accurately regulated and controlled according to the positions of different vibration buffering sections, and therefore the polarization restraining effect is stable and effective, fluctuation is small, and accurate control can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of acoustic-electric conversion, and in particular to a diaphragm, a sound-emitting unit and a sound-emitting module. Background Art

[0002] Due to the miniaturization and thinness of electronic devices such as mobile phones and tablets, the installation space reserved for sound devices is getting smaller and smaller, resulting in a limited volume of the back cavity of the sound device, which is not conducive to the low-frequency dive of the sound device, resulting in the sound emitted by the sound device being too sharp and the resolution being poor, seriously affecting the sound quality of the sound device. Moreover, the smaller and smaller cavity brings more and more serious polarization to the sound device, especially the side-sounding sound device has a large amplitude on the sound outlet side and a small amplitude on the non-sound outlet side, resulting in more serious polarization, which in turn affects the sound quality of the speaker.

[0003] In the prior art, asymmetric damping glue is usually applied on the diaphragm to improve polarization caused by the large difference between the amplitude at the sound outlet and the amplitude at the non-sound outlet. However, the amount and trajectory of the damping glue are unstable, resulting in large fluctuations in the final polarization suppression effect, and precise control cannot be ensured. Summary of the invention

[0004] The main purpose of the present invention is to propose a diaphragm, a sound unit and a sound module, aiming to solve the problem in the prior art that when improving the polarization at the sound outlet by coating asymmetric damping glue on the diaphragm, the effect fluctuates greatly and cannot be accurately controlled.

[0005] To achieve the above-mentioned object, the present invention provides a diaphragm, wherein the diaphragm vibrates along a first direction, and the diaphragm comprises a reinforcement portion and a folding ring, the folding ring comprises a folding ring portion and an outer edge portion sequentially connected along a second direction, the inner side of the folding ring portion is connected to the reinforcement portion, and the outer side of the folding ring portion is connected to the outer edge portion, wherein the reinforcement portion and the outer edge portion are both arranged along the second direction, the folding ring portion is bent at least once toward the first direction from the reinforcement portion to the outer edge portion, and the first direction is different from the second direction;

[0006] The folded ring portion is divided into at least two vibration-absorbing sections which are connected end to end in sequence along its circumferential direction, and the widths of at least two of the vibration-absorbing sections along the second direction are inconsistent.

[0007] In one embodiment, the folding ring portion includes two vibration-reducing sections, which are respectively a first vibration-reducing section and a second vibration-reducing section, the width of the first vibration-reducing section along the second direction is greater than the width of the second vibration-reducing section along the second direction, the two ends of the first vibration-reducing section are respectively two first ends, and the two ends of the second vibration-reducing section are respectively two second ends, one of the first ends is smoothly connected to one of the second ends through a transition section, and the other first end is smoothly connected to the other second end through another transition section.

[0008] In one embodiment, the folding ring portion includes two long sides and two short sides along its circumference, the two transition sections form the two short sides, the first vibration-relief section and the second vibration-relief section respectively form the two long sides, the short sides are connected to the long sides through a smooth transition through a corner, each of the short sides is arranged with equal width along the second direction, and each of the long sides is arranged with equal width along the second direction.

[0009] In one embodiment, the first vibration-relief sections are arranged with equal width along the second direction, the second vibration-relief sections are arranged with equal width along the second direction, and the width of each of the transition sections along the second direction is gradually reduced from the first end to the second end.

[0010] In one embodiment, a first middle portion is formed on the first vibration buffer section at a middle position between the two first ends, and the width of the first vibration buffer section along the second direction is gradually reduced from the first middle portion to each first end; a second middle portion is formed on the second vibration buffer section at a middle position between the two second ends, and the width of the second vibration buffer section along the second direction is gradually reduced from each second end to the second middle portion.

[0011] In one embodiment, the folded ring portion is bent multiple times from the reinforcing portion to the outer edge portion toward the first direction to form a wave-shaped structure.

[0012] In one embodiment, the folded ring portion is bent twice to form an S-shaped structure, or the folded ring portion is bent three times to form a W-shaped structure.

[0013] In one embodiment, the folding ring portion includes two vibration-damping segments arranged opposite to each other along the second direction, and the folding ring portion is formed into a W-shaped structure, wherein one of the vibration-damping segments includes three first segments connected in sequence, and the other vibration-damping segment includes three second segments connected in sequence.

[0014] wherein the widths of the three first sections are the same, the widths of the three second ends are the same, and the widths of the first section and the second end are different;

[0015] Alternatively, the widths of the three first segments are the same, the widths of two of the second segments are the same as the width of the first segment, and the width of the other second segment is different from the width of the first segment.

[0016] In one embodiment, the width of the first vibration-slowing section along the second direction is A, and the width of the second vibration-slowing section along the second direction is B, wherein 1

[0017] ​The present invention also provides a sound-emitting unit, including a shell and the above-mentioned diaphragm arranged in the shell, and an inner edge portion is also arranged on the side of the folding ring portion away from the outer edge portion, the inner edge portion is connected to the reinforcement portion, and the outer edge portion is connected to the shell.

[0018] In one embodiment, a height of the inner edge portion along the first direction is consistent with a height of the outer edge portion along the first direction.

[0019] The present invention also provides a sound module, comprising:

[0020] A module housing, wherein a sound outlet is provided on one side of the module housing;

[0021] The above-mentioned sound-emitting unit is arranged in the module shell, wherein the width of the vibration-absorbing section on the side close to the sound outlet along the second direction is smaller than the width of the vibration-absorbing section on the side away from the sound outlet along the second direction.

[0022] In one embodiment, the module shell includes a first shell and a second shell, the first shell is provided with the sound outlet, the sound unit also includes a magnetic circuit system, the diaphragm is arranged close to the first shell, and the distance between the folding ring part and the first shell along the first direction and the distance between the folding ring part and the magnetic circuit system along the first direction are not less than 0.5 mm.

[0023] The technical solution of the present invention is to divide the folding ring of the diaphragm into at least two damping sections along its circumference, and the widths of at least two damping sections along the second direction are different. It can be understood that the width of the folding ring along the second direction will affect its amplitude. The wider the folding ring, the greater the compliance, and the smaller the limiting effect on the vibration system, so that the amplitude at this place is larger. Therefore, by adjusting the widths of different damping sections of the folding ring, the amplitudes at different parts of the folding ring are different. The distance between the folding ring and the sound outlet in the speaker will also affect the amplitude of the diaphragm. Therefore, by adjusting the widths of different damping sections according to the distances between different damping sections of the folding ring and the sound outlet, the amplitudes at different damping sections are close to the same, thereby improving the polarization of the diaphragm. The present invention achieves the effect of improving polarization by directly changing the width of the folding ring. The width of the folding ring is controllable, and its width can be accurately adjusted according to the positions of different damping sections, so that the effect of suppressing polarization is stable and effective, with small fluctuations, and can be accurately controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0025] Figure 1 It is a schematic structural diagram of a diaphragm according to an embodiment of the present invention;

[0026] Figure 2 is a schematic top view of a diaphragm according to an embodiment of the present invention;

[0027] Figure 3 is a cross-sectional schematic diagram of a diaphragm according to an embodiment of the present invention;

[0028] Figure 4 The figure is a schematic cross-sectional structural diagram of a sound module according to an embodiment of the present invention.

[0029] Description of Figure Numbers:

[0030] 100, diaphragm; 1, reinforcement part; 2, folded ring; 21, folded ring part; 22, outer edge part; 23, damping section; 231, first section; 232, second section; 24, first damping section; 241, first end; 242, first middle part; 25, second damping section; 251, second end; 252, second middle part; 26, transition section; 27, inner edge part; 28, corner; 200, sound module; 201, module housing; 202, sound outlet; 203, first housing; 204, second housing; 205, magnetic circuit system.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] Please combine Figures 1 to 3 The present invention proposes a diaphragm 100, which vibrates along a first direction, and includes a reinforcement portion 1 and a folding ring 2, the folding ring 2 includes a folding ring portion 21 and an outer edge portion 22 connected in sequence along a second direction, the inner side of the folding ring portion 21 is connected to the reinforcement portion 1, and the outer side of the folding ring portion 21 is connected to the outer edge portion 22, wherein the reinforcement portion 1 and the outer edge portion 22 are both arranged along the second direction, the folding ring portion 21 is bent at least once toward the first direction from the reinforcement portion 1 to the outer edge portion 22, and the first direction is different from the second direction; the folding ring portion 21 is divided into at least two vibration damping sections 23 connected in sequence end to end along its circumferential direction, and the widths of at least two vibration damping sections 23 along the second direction are inconsistent.

[0036] It can be understood that, in a normal state, the first direction is a vertical direction, and the second direction is a horizontal direction, and the width of the vibration-damping section 23 along the second direction is the width of a cross section of the vibration-damping section 23 along the horizontal direction.

[0037] The technical solution of the present invention is to divide the folding ring portion 21 of the diaphragm 100 into at least two damping sections 23 along its circumference, and the widths of the at least two damping sections 23 along the second direction are different. It can be understood that the width of the folding ring portion 21 along the second direction will affect its amplitude. The wider the folding ring portion 21, the greater the compliance, the smaller the limiting effect on the vibration system, and thus the greater the amplitude at this location. Therefore, by adjusting the widths of different damping sections 23 of the folding ring portion 21, the amplitudes of different locations of the folding ring portion 21 are different, and the folding ring portion 21 The distance between the speaker and the sound outlet will also affect the amplitude of the diaphragm 100. The amplitude is large near the sound outlet and small far from the sound outlet. Therefore, by adjusting the width of different buffer sections 23 according to the distance between different buffer sections 23 of the folding ring 21 and the sound outlet, the width of the folding ring 21 near the sound outlet is small, which has a large limiting effect on the diaphragm 100, and the width of the folding ring 21 far from the sound outlet is large, which has a small limiting effect on the diaphragm 100, so that the amplitudes at different buffer sections 23 are close to the same, thereby improving the polarization of the diaphragm 100. The present invention achieves the effect of improving polarization by directly changing the width of the folding ring 21. The width of the folding ring 21 is controllable, and its width can be accurately adjusted according to the position of different buffer sections 23, so that the effect of suppressing polarization is stable and effective, with small fluctuations, and can be accurately controlled.

[0038] In one embodiment, the folding ring portion 21 includes two vibration-absorbing sections 23, which are respectively a first vibration-absorbing section 24 and a second vibration-absorbing section 25. The width of the first vibration-absorbing section 24 along the second direction is greater than the width of the second vibration-absorbing section 25 along the second direction. The two ends of the first vibration-absorbing section 24 are respectively two first ends 241, and the two ends of the second vibration-absorbing section 25 are respectively two second ends 251. One of the first ends 241 is smoothly connected to one of the second ends 251 through a transition section 26, and the other first end 241 is smoothly connected to the other second end 251 through another transition section 26.

[0039] Understandably, there will be an area with a sudden change in shape at the connection of two structures with different widths, and the sudden geometric change will cause stress concentration, causing the connection to bear a large load, which is prone to fatigue, deformation, or even fracture. By smoothing the transition, the stress can be evenly dispersed, the local stress concentration can be reduced, and the service life of the diaphragm 100 can be extended. At the same time, the smooth transition can make the movement of the diaphragm 100 more uniform, avoiding uneven vibration caused by structural mutations, thereby reducing sound distortion and improving the fidelity of the sound quality.

[0040] In one embodiment, the folding ring portion 21 includes two long sides and two short sides along its circumference, two transition sections 26 form the two short sides, the first vibration damping section 24 and the second vibration damping section 25 respectively form two long sides, the short sides and the long sides are smoothly transitionally connected by corners 28, and each short side is set to have equal width along the second direction, and each long side is set to have equal width along the second direction.

[0041] In this specific embodiment, the folding ring portion 21 is arranged in a rectangular shape, the two transition sections 26 form two short sides, and the first slow vibration section 24 and the second slow vibration section 25 form two long sides respectively, so that the first slow vibration section 24 is located on the side away from the sound outlet, and the second slow vibration section 25 is located on the side close to the sound outlet. Due to the rectangular arrangement and the second slow vibration section 25 and the first slow vibration section 24 being the long sides, the vibration characteristics of the area close to the sound outlet and the area far from the sound outlet are easier to balance. Since when the speaker is working, the amplitude close to the sound outlet is usually larger, while the amplitude far from the sound outlet is smaller, the rectangular design allows the diaphragm 100 to maintain a more uniform vibration in a direction parallel to the sound outlet, thereby reducing the amplitude difference of the diaphragm 100 at different positions, improving the uniformity of the overall vibration, and reducing the polarization of the diaphragm 100. At the same time, by keeping the first slow vibration section 24 and the second slow vibration section 25 of equal width along the second direction, and the first slow vibration section 24 and the second slow vibration section 25 of different widths, the amplitude control of the diaphragm 100 in different areas can be made more stable and uniform. The slow vibration sections 23 of equal width provide consistent elasticity and damping performance, avoiding inconsistent vibration caused by width changes, making the movement of the diaphragm 100 on the entire surface smoother, thereby reducing the polarization effect and improving the uniformity of the sound.

[0042] In one embodiment, the first vibration damping section 24 is arranged with equal width along the second direction, the second vibration damping section 25 is arranged with equal width along the second direction, and the width of each transition section 26 along the second direction is gradually reduced from the first end 241 to the second end 251.

[0043] It should be noted that, in this embodiment, the folding ring portion 21 can be rectangular or circular, and the first slow vibration section 24 and the second slow vibration section 25 maintain the same width along the second direction, so that the amplitude control of the diaphragm 100 in different areas can be more stable and uniform. The equal-width slow vibration section 23 provides consistent elasticity and damping performance, avoids inconsistent vibration caused by width changes, and makes the movement of the diaphragm 100 on the entire surface smoother, thereby reducing the polarization effect and improving the uniformity of vibration. The transition section 26 is set to be tapered to disperse stress, reduce local stress concentration, and extend the service life of the diaphragm 100.

[0044] In one embodiment, a first middle portion 242 is formed on the first vibration damping section 24 at a middle position between the two first ends 241, and the width of the first vibration damping section 24 along the second direction is gradually reduced from the first middle portion 242 to each first end 241; a second middle portion 252 is formed on the second vibration damping section 25 at a middle position between the two second ends 251, and the width of the second vibration damping section 25 along the second direction is gradually reduced from each second end 251 to the second middle portion 252.

[0045] It can be understood that the folding ring portion 21 is an annular structure, the first middle portion 242 is one point of the folding ring portion 21, the second middle portion 252 is another point opposite to the first middle portion 242, the width at the first middle portion 242 is the maximum width of the folding ring portion 21, the width at the second middle portion 252 is the minimum width of the folding ring portion 21, and the width of the entire folding ring portion 21 is gradually reduced from both sides of the first middle portion 242 to the second middle portion 252 (the width of the folding ring portion 21 from the first middle portion 242 to the second middle portion 252, each width is smaller than the width of the previous one), that is, the width of the folding ring portion 21 is gradually reduced from both sides of the first middle portion 242 to the second middle portion 252. The width of a vibration damping section 24 along the second direction is gradually reduced from the first middle portion 242 to each first end 241, and the width of a second vibration damping section 25 along the second direction is gradually reduced from each second end 251 to the second middle portion 252. If the width of the folding ring portion 21 changes suddenly, the transition of vibration will be uneven, which may cause uneven vibration or even resonance. The gradually reduced width design of the folding ring portion 21 makes the transition of vibration from one area to another smoother, and the transition of vibration is more continuous and stable, which helps to improve the overall vibration consistency of the diaphragm 100.

[0046] In one embodiment, the folded ring portion 21 is bent multiple times in a first direction from the reinforcement portion 1 to the outer edge portion 22 to form a wavy structure. The wavy structure provides more elastic space, so that the diaphragm 100 can adapt to larger amplitude changes during movement. The wavy geometric structure can absorb and release energy through bending and stretching, so that the diaphragm 100 has better flexibility and can withstand large vibrations without losing structural integrity. At the same time, the design of the wavy folded ring portion 21 can make the speaker perform more balanced across the entire frequency spectrum. For low-frequency signals, the wavy elasticity can provide sufficient amplitude space and buffering effect, thereby reducing low-frequency distortion and enhancing the depth and fullness of the low frequency; for high-frequency signals, the wavy structure can provide a clearer and more accurate high-frequency response by reducing unnecessary amplitude and vibration delays.

[0047] In one embodiment, the folded ring portion 21 is bent twice to form an S-shaped structure. In another embodiment, the folded ring portion 21 is bent three times to form a W-shaped structure.

[0048] It should be noted that, as the rear cavity space of the speaker module continues to decrease, the design of the speaker diaphragm 100 becomes a key factor in improving low-frequency performance. The design of the diaphragm 100 improves low-frequency performance mainly through the following three aspects:

[0049] 1. Reduce the Young's modulus of the diaphragm 100 and use a softer diaphragm 100 to improve the low-frequency performance. The disadvantage is that a too soft diaphragm 100 does not provide enough support for the speaker vibration system, which may lead to problems such as low yield, poor sound quality, and poor reliability.

[0050] 2. Reduce the thickness of the diaphragm 100. Use a thinner diaphragm 100 to improve low-frequency performance. The disadvantage is the same as the first item. A too thin diaphragm 100 does not provide enough support for the speaker vibration system, which may lead to problems such as low yield, poor sound quality, and poor reliability.

[0051] 3. By changing the shape of the folding ring portion 21 of the diaphragm 100 and increasing the line length of the folding ring portion 21 , the low-frequency performance is improved without reducing the thickness and modulus of the diaphragm 100 .

[0052] The design of the traditional loudspeaker diaphragm 100 is basically a single-ring U-shaped symmetrical design, and the line length of the ring portion 21 is short and the stiffness coefficient is large, which is not conducive to the improvement of low-frequency performance. If the line length of the ring portion 21 is increased by widening the ring portion 21, the area Sd of the vibration system that effectively pushes the air will be reduced, resulting in a decrease in the mid-frequency performance. If the line length is increased by raising the ring portion 21, the Z-axis space of the side magnet will be compressed, which is not conducive to the improvement of the overall performance. Without changing the total width of the ring portion 21, by bending the ring portion 21 multiple times, it is possible to increase the line length of the ring portion 21 without affecting the mid-frequency performance and without compressing the Z-axis space of the side magnet, thereby improving the low-frequency performance of the diaphragm 100.

[0053] Furthermore, the folding ring portion 21 includes two vibration-damping sections 23 arranged opposite to each other along the second direction. The folding ring portion 21 is formed into a W-shaped structure, wherein one vibration-damping section 23 includes three first sections 231 connected in sequence, and the other vibration-damping section 23 includes three second sections 232 connected in sequence.

[0054] In a specific embodiment, the widths of the three first sections 231 are the same, the widths of the three second ends 251 are the same, and the widths of the first section 231 and the second end 251 are different;

[0055] In another specific embodiment, the three first segments 231 have the same width, the width of two second segments 232 is the same as the width of the first segment 231 , and the width of another second segment 232 is different from the width of the first segment 231 .

[0056] The same width of each first section 231 or second section 232 can ensure the elastic consistency of each part of the folding ring 21. This allows the diaphragm 100 to obtain good vibration control at different frequencies, while also increasing the stability of the structure, simplifying the manufacturing difficulty, and reducing the cost. Different widths can flexibly adjust the width of the first section 231 or second section 232 of the folding ring 21 according to actual needs, thereby improving flexibility and applicability.

[0057] It should be noted that the structure of the folding ring portion 21 is not limited to the above two embodiments, as long as the sum of the widths of the three first segments 231 is greater than the sum of the widths of the three second segments 232. For example, the widths of the three first segments 231 are all different, the widths of the three second segments 232 are all different, but the sum of the three first segments 231 is greater than the sum of the three second segments 232.

[0058] Compared with the U-shaped folding portion 21 , the folding line length of the W-shaped folding portion 21 can be increased by more than two times, and the compliance is increased by more than 20% under the condition of the same diaphragm 100 thickness and modulus.

[0059] Specifically, the width of the first vibration-slowing section 24 along the second direction is A, and the width of the second vibration-slowing section 25 along the second direction is B, wherein,

[0060] The width ratio of the two is between 1:1 and 1:2, and is adjusted in real time according to the specific space conditions in the module. A / B is preferably 1.1, 1.2 or 1.3. The width ratio of the two should not be too large, otherwise the folding ring portion 21 will occupy too much space in the module. Therefore, it is best to take a ratio between 1:1 and 1:2.

[0061] The present invention also provides a sound-emitting unit, including a shell and the above-mentioned diaphragm 100 arranged in the shell, and an inner edge portion 27 is also arranged on the side of the folded ring portion 21 away from the outer edge portion 22, the inner edge portion 27 is connected to the reinforcement portion 1, and the outer edge portion 22 is connected to the shell. The specific structure of the diaphragm 100 refers to the above-mentioned embodiment. Since the present sound-emitting unit adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one. At the same time, the folded ring portion 21 is connected to the reinforcement portion 1 through the inner edge portion 27, and the outer edge portion 22 is connected to the shell, which improves the stability of the connection between the folded ring portion 21, the reinforcement portion 1 and the shell, prevents the folded ring 2 from falling off or shifting during the vibration process, and improves the sound stability of the sound-emitting unit.

[0062] ​In one embodiment, the height of the inner edge portion 27 along the first direction is consistent with the height of the outer edge portion 22 along the first direction. The inner edge portion 27 and the outer edge portion 22 having the same height can improve the overall structural strength of the diaphragm 100, reduce the risk of deformation caused by uneven force, and improve the durability of the diaphragm 100. At the same time, it can ensure that the vibration response of the diaphragm 100 is more uniform during operation, which helps to reduce the vibration unevenness caused by height differences, thereby improving the clarity and consistency of the sound output.

[0063] Please combine Figures 1 to 4 The present invention also proposes a sound module 200, comprising a module housing 201 and the above-mentioned sound unit, wherein a sound outlet 202 is provided on one side of the module housing 201; the sound unit is arranged in the module housing 201, wherein the width of the damping section 23 on the side close to the sound outlet along the second direction is smaller than the width of the damping section 23 on the side away from the sound outlet along the second direction. It can be understood that the amplitude of the diaphragm 100 near the sound outlet is large, and the amplitude of the diaphragm 100 far from the sound outlet is small, so by making the width of the damping section 23 on the side close to the sound outlet along the second direction smaller than the width of the damping section 23 on the side away from the sound outlet along the second direction, the folding ring portion 21 far from the sound outlet has a smaller restriction on the amplitude, and the folding ring portion 21 near the sound outlet has a larger restriction on the amplitude, so that the amplitudes of various parts of the diaphragm 100 are close to the same, thereby reducing polarization.

[0064] The specific structure of the diaphragm 100 refers to the above embodiments. Since the sound-emitting unit adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0065] In one embodiment, the module housing 201 includes a first housing 203 and a second housing 204, the first housing 203 is provided with a sound outlet, the sound unit further includes a magnetic circuit system 205, the diaphragm 100 is arranged close to the first housing 203, and the distance between the folding ring 21 and the first housing 203 along the first direction and the distance between the folding ring 21 and the magnetic circuit system 205 along the first direction are not less than 0.5 mm. An excessively high folding ring 21 will block the airflow and affect the sound quality, and at the same time, it is more likely to be damaged when subjected to air pressure and water pressure, which is not conducive to the waterproofing of the product. Therefore, the distance between the folding ring 21 and the first housing 203 along the first direction and the distance between the folding ring 21 and the magnetic circuit system 205 along the first direction are not less than 0.5 mm, thereby ensuring the stability and safety of the folding ring 21 and the sound quality of the sound module 200.

[0066] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A diaphragm, characterized in that: The diaphragm vibrates along a first direction, and the diaphragm includes a reinforcement portion and a fold, the fold includes a fold portion and an outer edge portion sequentially connected along a second direction, the inner side of the fold portion is connected to the reinforcement portion, and the outer side of the fold portion is connected to the outer edge portion, wherein the reinforcement portion and the outer edge portion are both arranged along the second direction, the fold portion is bent at least once toward the first direction from the reinforcement portion to the outer edge portion, and the first direction is different from the second direction; The folded ring portion is divided into at least two vibration-absorbing sections which are connected end to end in sequence along its circumferential direction, and the widths of at least two of the vibration-absorbing sections along the second direction are inconsistent.

2. The diaphragm according to claim 1, characterized in that The folding ring portion includes two vibration-slowing sections, which are respectively a first vibration-slowing section and a second vibration-slowing section. The width of the first vibration-slowing section along the second direction is greater than the width of the second vibration-slowing section along the second direction. The two ends of the first vibration-slowing section are respectively two first ends, and the two ends of the second vibration-slowing section are respectively two second ends. One of the first ends is smoothly connected to one of the second ends through a transition section, and the other first end is smoothly connected to the other second end through another transition section.

3. The diaphragm according to claim 2, characterized in that: The folding ring portion includes two long sides and two short sides along its circumference, the two transition sections form the two short sides, the first vibration-absorbing section and the second vibration-absorbing section respectively form the two long sides, the short sides are connected to the long sides through a smooth transition through corners, each of the short sides is arranged with equal width along the second direction, and each of the long sides is arranged with equal width along the second direction.

4. The diaphragm according to claim 2, characterized in that: The first vibration-slowing sections are arranged with equal width along the second direction, the second vibration-slowing sections are arranged with equal width along the second direction, and the width of each transition section along the second direction is gradually reduced from the first end to the second end.

5. The diaphragm according to claim 2, characterized in that: A first middle portion is formed on the first vibration-relief section at a middle position between the two first ends, and a width of the first vibration-relief section along the second direction is gradually reduced from the first middle portion to each of the first ends; a second middle portion is formed on the second vibration-relief section at a middle position between the two second ends, and a width of the second vibration-relief section along the second direction is gradually reduced from each of the second ends to the second middle portion.

6. The diaphragm according to any one of claims 1 to 5, characterized in that: The folding ring portion is bent multiple times from the reinforcing portion to the outer edge portion toward the first direction to form a wave-shaped structure.

7. The diaphragm according to claim 6, characterized in that The folded ring portion is bent twice to form an S-shaped structure, or the folded ring portion is bent three times to form a W-shaped structure.

8. The diaphragm according to claim 7, characterized in that The folding ring portion includes two vibration-damping sections arranged opposite to each other along the second direction, and the folding ring portion is formed into a W-shaped structure, wherein one of the vibration-damping sections includes three first sections connected in sequence, and the other vibration-damping section includes three second sections connected in sequence, wherein the widths of the three first sections are the same, the widths of the three second ends are the same, and the widths of the first section and the second end are different; Alternatively, the widths of the three first segments are the same, the widths of two of the second segments are the same as the width of the first segment, and the width of the other second segment is different from the width of the first segment.

9. The diaphragm according to any one of claims 1 to 5, characterized in that: The width of the first vibration damping section along the second direction is A, and the width of the second vibration damping section along the second direction is B, wherein 1 includes a shell and a diaphragm as described in any one of claims 1 to 9 arranged in the shell, and an inner edge portion is also arranged on the side of the folding ring portion away from the outer edge portion, the inner edge portion is connected to the reinforcement portion, and the outer edge portion is connected to the shell.

10. A sound-emitting unit, characterized in that: A height of the inner edge portion along the first direction is consistent with a height of the outer edge portion along the first direction.

11. The sound-emitting unit according to claim 10, characterized in that: include:

12. A sound module, characterized in that: A module housing, wherein a sound outlet is provided on one side of the module housing; The sound-emitting unit as described in any one of claims 10 to 11, wherein the sound-emitting unit is arranged in the module housing, wherein the width of the vibration-damping section on the side close to the sound outlet along the second direction is smaller than the width of the vibration-damping section on the side away from the sound outlet along the second direction. The module shell includes a first shell and a second shell, the first shell is provided with the sound outlet, the sound unit also includes a magnetic circuit system, the diaphragm is arranged close to the first shell, the distance between the folding ring part and the first shell along the first direction and the distance between the folding ring part and the magnetic circuit system along the first direction are not less than 0.5 mm.

13. The sound module according to claim 12, characterized in that: ​

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