Centering vane and sound production device

Abstract

This invention discloses a centering support and a sound-generating device. The centering support is applied to the sound-generating device and has a major axis side and a minor axis side. The ratio of the length of the major axis side to the length of the minor axis side is greater than or equal to 1.5. The centering support has at least two mounting holes, which are spaced apart and penetrate the centering support. The mounting holes are used for the voice coil of the sound-generating device to pass through and be fixed. This invention aims to provide a centering support that can ensure the axial synchronous movement of two voice coils and improve sound quality. When applied to a sound-generating device, this centering support ensures the axial synchronous movement of two voice coils, reducing nonlinear distortion caused by the asynchrony of the two voice coils during operation. Simultaneously, while satisfying the damping characteristics of an elastic system, the centering support also ensures the stiffness and strength of the centering support during vertical movement, making the product practical.

Description

Technical Field

[0001] This invention relates to the field of electroacoustic conversion technology, and in particular to a centering support and a sound-generating device using the centering support. Background Technology

[0002] Loudspeakers, as electroacoustic devices that convert electrical signals into sound signals, are widely used in terminal devices such as mobile phones, personal computers, and passenger vehicles. A loudspeaker structure typically includes a magnetic circuit system and a vibration system. The vibration system is a crucial component for achieving electroacoustic energy conversion, and its performance directly affects the product's sound amplification effect.

[0003] In related technologies, loudspeakers with dual voice coil structures typically use two centering supports, which not only makes assembly difficult but also makes it hard to control the synchronous vibration of the two voice coils. This can lead to nonlinear distortion and other problems due to the asynchrony of the two voice coils during operation. Summary of the Invention

[0004] The main objective of this invention is to provide a centering support and a sound-generating device. The aim is to provide a centering support that ensures synchronous axial movement of the two voice coils and improves sound quality. This centering support, applied in the sound-generating device, utilizes a single centering support to ensure synchronous axial movement of the two voice coils, reducing nonlinear distortion caused by asynchrony during operation. Simultaneously, while satisfying the damping characteristics of an elastic system, the centering support also ensures stiffness and strength during its vertical movement, making the product practical.

[0005] To achieve the above objectives, the present invention proposes a centering support for use in a sound-generating device. The centering support has a long axis side and a short axis side, the ratio of the length of the long axis side to the length of the short axis side is greater than or equal to 1.5, and the centering support is provided with at least two mounting holes, which are spaced apart and both penetrate the centering support. The mounting holes are used for the voice coil of the sound-generating device to pass through and be fixed.

[0006] In one embodiment, the centering support includes a spring wave portion and a fixing portion surrounding the spring wave portion. The spring wave portion has at least two mounting holes and a spring wave that surrounds the outside of the at least two mounting holes and is located between the mounting holes and the fixing portion.

[0007] In one embodiment, the spring wave includes multiple spring waves, each located between the mounting hole and the fixing part. The multiple spring waves are connected sequentially from the fixing part to the mounting hole, forming a ripple.

[0008] In one embodiment, the line connecting the highest points of the plurality of the spring waves is set at an angle to the plane where the fixing part is located;

[0009] And / or, the fixing part has a first surface and a second surface that are disposed opposite to each other, the connection point of two adjacent springs forms a lowest point, and the plurality of lowest points and the plurality of highest points of springs are all located above the first surface opposite to the second surface.

[0010] In one embodiment, the spring wave includes three spring waves, which are sequentially named a first spring wave, a second spring wave, and a third spring wave from the fixing part to the mounting hole;

[0011] The ripple height of the first wave is the same as that of the second wave; and / or, the ratio of the ripple height of the first wave to the ripple height of the third wave is in the range of 1.3 to 2.0; and / or, the ratio of the difference between the peak heights of the second wave and the first wave to the ripple height of the first wave is in the range of 0.4 to 0.6.

[0012] In one embodiment, the spring portion has a folded edge forming around the mounting hole;

[0013] The folded edge is set at an angle to the axial direction of the mounting hole, and the angle ranges from 0 to 10°; and / or, the height of the folded edge along the axial direction of the mounting hole ranges from 5 mm to 20 mm.

[0014] In one embodiment, the spring section further has a reinforcing region located between two adjacent mounting holes, and the reinforcing region is provided with reinforcing ribs.

[0015] In one embodiment, the reinforcing ribs include a plurality of ribs;

[0016] The reinforcing rib extends in a direction parallel to the line connecting the centers of two adjacent mounting holes;

[0017] And / or, the plurality of the reinforcing ribs are arranged at intervals along a direction perpendicular to the line connecting the centers of two adjacent mounting holes;

[0018] And / or, in the direction perpendicular to the center line connecting two adjacent mounting holes, the cross section of the plurality of reinforcing ribs is corrugated; or, the reinforcing ribs are solid protrusions protruding from the reinforcing area, one side of the plurality of solid protrusions is corrugated, and the included angle between two adjacent solid protrusions is 80° to 90°.

[0019] In one embodiment, the centering support is rectangular or racetrack-shaped;

[0020] And / or, the centering support is made of at least one or more of the following materials: cotton, aramid, blended fabric, silk, rubber, and polyester.

[0021] And / or, the mounting holes include two, and the line connecting the centers of the two mounting holes is parallel to the extension direction of the long axis side;

[0022] And / or, the shape of the mounting hole is circular, elliptical, irregular, or racetrack-shaped.

[0023] The present invention also proposes a sound-generating device, the sound-generating device comprising a magnetic circuit system and a vibration system disposed opposite to each other, the vibration system comprising:

[0024] A diaphragm, wherein the diaphragm is disposed opposite to the magnetic circuit system;

[0025] At least two voice coils, one end of each of the at least two voice coils being connected to the side of the diaphragm facing the magnetic circuit system, and spaced apart; and

[0026] In the aforementioned centering support, the end of each voice coil furthest from the diaphragm passes through a mounting hole in the centering support and is connected to the wall of the mounting hole.

[0027] The centering support of this invention has an aspect ratio greater than or equal to 1.5, meaning the ratio of the length of the major axis to the minor axis of the centering support is greater than or equal to 1.5. This allows for at least two spaced mounting holes on the centering support. When applied to a sound-generating device, this single centering support can simultaneously fix and center two or more voice coils, ensuring synchronous axial movement of the two voice coils and effectively improving the sound quality of the device. Furthermore, by using a single centering support to ensure synchronous axial movement of the two voice coils, the nonlinear distortion caused by asynchrony during operation of the two voice coils is reduced. Simultaneously, while meeting the damping characteristics of an elastic system, the centering support also ensures stiffness and strength during vertical movement, making the product practical. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the centering support plate in one embodiment of the present invention;

[0030] Figure 2 This is a top view of the centering support plate in one embodiment of the present invention;

[0031] Figure 3 for Figure 2A cross-sectional view along the AA direction;

[0032] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0033] Figure 5 for Figure 2 Cross-sectional view along the BB direction;

[0034] Figure 6 In another embodiment Figure 2 Cross-sectional view along the BB direction;

[0035] Figure 7 for Figure 6 Enlarged view of point D in the middle;

[0036] Figure 8 This is a top view of the centering support plate in another embodiment of the present invention;

[0037] Figure 9 This is a cross-sectional schematic diagram of a vibration system in one embodiment of the present invention.

[0038] Explanation of icon numbers:

[0039] label name label name 100 De-settling support 27 Reinforcing ribs 1 Mounting holes 28 solid protrusion structure 2 Danbo Department 3 Fixing part 21 Spiral 31 First surface 22 First wave 32 Second surface 23 Second wave 400 diaphragm 24 Third wave 500 Voice coil 25 Folded edge 600 Vibration system 26 Strengthened area

[0040] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0043] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0044] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0045] Loudspeakers, as electroacoustic devices that convert electrical signals into sound signals, are widely used in terminal devices such as mobile phones and personal computers. A loudspeaker structure typically includes a magnetic circuit system and a vibration system. The vibration system is a crucial component for achieving electroacoustic energy conversion, and its performance directly affects the product's sound amplification effect.

[0046] In related technologies, loudspeakers with dual voice coil structures typically use two centering supports. Attaching two centering supports not only increases the assembly process but also increases the assembly difficulty. Furthermore, it makes it difficult to control the synchronous vibration of the two voice coils, which can lead to nonlinear distortion and other problems due to the asynchrony of the two voice coils during operation.

[0047] Based on the above concepts and problems, this invention proposes a centering support 100. It is understood that the centering support 100 is applied in a sound-generating device, which can be a loudspeaker or similar structure, and is not limited thereto.

[0048] Please refer to the reference. Figures 1 to 8 As shown, in this embodiment of the invention, the centering support 100 has a long axis side and a short axis side, the ratio of the length of the long axis side to the length of the short axis side is greater than or equal to 1.5, the centering support 100 is provided with at least two mounting holes 1, the at least two mounting holes 1 are spaced apart and both penetrate the centering support 100, the mounting holes 1 are used for the voice coil 500 of the sound generating device to pass through and be fixed.

[0049] In this embodiment, by setting the aspect ratio of the centering support 100 to be greater than or equal to 1.5, it is convenient to use one centering support 100 in conjunction with multiple voice coils in the sound-generating device. It is understood that the centering support 100 has a major axis side and a minor axis side, and the ratio of the length of the major axis side to the length of the minor axis side is greater than or equal to 1.5. Optionally, the centering support 100 is rectangular, that is, the centering support 100 has a long side and a short side connected end to end, the long side being the major axis side and the short side being the minor axis side. Of course, to further simplify the structure of the centering support 100 and improve its aesthetics, the outer contour of the centering support 100 can be selected as a racetrack shape, that is, the two ends of the minor axis side of the centering support 100 are rounded.

[0050] It is understood that the shape of the centering support 100 can also be a rounded rectangle or other structures, and is not limited here. In this embodiment, by providing at least two mounting holes 1 in the centering support 100, and such that the at least two mounting holes 1 are spaced apart, that is, each mounting hole 1 passes through the centering support 100, when the centering support 100 is applied in the sound generating device, the centering support 100 can conveniently fix the voice coil 500 of the sound generating device using the mounting holes 1. This not only allows the voice coil 500 to pass through the mounting holes 1, but also ensures the synchronous axial movement of multiple voice coils 500 by the centering support 100, reducing the nonlinear distortion caused by the asynchrony of multiple voice coils 500 during operation.

[0051] The centering support 100 of the present invention has an aspect ratio greater than or equal to 1.5, that is, the ratio of the length of the long axis side to the length of the short axis side of the centering support 100 is greater than or equal to 1.5. This allows for at least two spaced mounting holes 1 on the centering support 100. When applied to a sound-generating device, the centering support 100 can simultaneously fix and center two or more voice coils 500, ensuring synchronous axial movement of the two voice coils 500. This effectively improves the sound quality of the sound-generating device. Furthermore, by using a single centering support 100 to ensure synchronous axial movement of the two voice coils 500, the nonlinear distortion caused by asynchrony during operation of the two voice coils 500 is reduced. Simultaneously, while satisfying the damping characteristics of an elastic system, the centering support 100 also ensures stiffness and strength during vertical movement, making the product practical.

[0052] In one embodiment, the centering support 100 includes a spring wave portion 2 and a fixing portion 3 arranged around the spring wave portion 2. The spring wave portion 2 has at least two mounting holes 1 and a spring wave 21. The spring wave 21 is arranged around the outside of the at least two mounting holes 1 and is located between the mounting holes 1 and the fixing portion 3.

[0053] In this embodiment, the spring portion 2 and the fixing portion 3 of the centering support 100 can be selected as an integrally formed structure, which can effectively improve the structural strength and stability of the centering support 100. It can be understood that by providing a spring 21 in the spring portion 2 of the centering support 100, when the centering support 100 is assembled into the sound-generating device, after the centering support 100 cooperates with the voice coil 500, the spring 21 of the spring portion 2 can be used to buffer the axial movement of the voice coil 500, so as to avoid excessive vibration of the centering support 100 with the voice coil 500.

[0054] Understandably, the centering support 100 is connected and fixed to the sound-generating device via the fixing part 3. Optionally, the fixing part 3 of the centering support 100 can be fixedly connected to the sound-generating device by means of bonding or the like. In this embodiment, the spring 21 of the spring part 2 can be selected as a corrugated structure, for example, formed by an upwardly convex or downwardly concave structure.

[0055] In this embodiment, the centering support 100 is provided with two mounting holes 1. Optionally, the center line connecting the two mounting holes 1 is parallel to the extension direction of the major axis, that is, the two mounting holes 1 are spaced apart along the length direction of the centering support 100. Optionally, the shape of the mounting holes 1 is circular, elliptical, irregular, or racetrack-shaped. The shape and outline of the mounting holes 1 are specifically set according to the shape and outline of the voice coil 500, and are not limited here.

[0056] In one embodiment, such as Figures 1 to 8 As shown, the spring wave 21 includes multiple spring waves 21, all of which are located between the mounting hole 1 and the fixing part 3. From the fixing part 3 to the mounting hole 1, the multiple spring waves 21 are connected in sequence to form a wavy pattern.

[0057] In this embodiment, by providing multiple springs 21 between the fixing part 3 and the mounting hole 1, it is convenient to use the multiple springs 21 to achieve sufficient buffering effect on the vibration of the voice coil 500, so as to avoid the vibration amplitude of the voice coil 500 being too large and affecting the installation and fixation of the centering support 100. It can be understood that the multiple springs 21 are connected in sequence to form a corrugation, that is, the multiple springs 21 are connected in sequence to form an integral structure, which is not limited here.

[0058] In one embodiment, such as Figures 1 to 8 As shown, the line connecting the highest points of the multiple springs 21 forms an angle with the plane containing the fixing part 3. Understandably, this arrangement effectively ensures the structural strength of the centering support 100. Optionally, the angle between the line connecting the highest points of the multiple springs 21 and the plane containing the fixing part 3 can range from 2° to 10°.

[0059] In one embodiment, such as Figures 1 to 8 As shown, the fixing part 3 has a first surface 31 and a second surface 32 that are disposed opposite to each other. The lowest point is formed at the connection of two adjacent springs 21. The multiple lowest points and the multiple highest points of springs 21 are all located above the first surface 31 facing away from the second surface 32.

[0060] In this embodiment, by setting the multiple springs 21 of the spring section 2 above the first surface 31 of the fixing section 3, that is, forming the lowest point at the connection of two adjacent springs 21, the multiple lowest points and the multiple highest points of the multiple springs 21 are all located above the first surface 31 facing away from the second surface 32, thereby ensuring that the structural strength of the centering support 100 can be guaranteed, and that the centering support 100 can be avoided to be on the same plane, thereby increasing the buffering effect of the centering support 100.

[0061] In one embodiment, such as Figures 1 to 8 As shown, the spring wave 21 includes three spring waves, which are sequentially named as first spring wave 22, second spring wave 23, and third spring wave 24 from the fixing part 3 to the mounting hole 1. In this embodiment, as... Figure 4 As shown, the ripple height of the first wave 22 is defined as H1, the ripple height of the second wave 23 is defined as H2, and the ripple height of the third wave 24 is defined as H3.

[0062] Optionally, the corrugation height of the first wave 22 is the same as that of the second wave 23, that is, the corrugation height H1 of the first wave 22 is equal to the corrugation height H2 of the second wave 23. In this embodiment, by setting the crest height of the wave 21 to gradually increase from the fixing part 3 to the mounting hole 1, the structural strength of the centering support 100 is effectively maintained.

[0063] In this embodiment, the height difference between the crests of the second wave 23 and the first wave 22 is defined as h, such that the ratio of the height difference h between the crests of the second wave 23 and the first wave 22 to the corrugation height H1 of the first wave 22 is in the range of 0.4 to 0.6, thereby ensuring both the structural compliance and structural strength of the centering support 100.

[0064] Optionally, the ratio of the corrugation height H1 of the first spring 22 to the corrugation height H3 of the third spring 24 is in the range of 1.3 to 2.0. This can effectively ensure the depth of the mounting hole 1 of the centering support 100, thereby improving the structural stability of the centering support 100 and the voice coil 500 after installation and fixation.

[0065] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the spring section 2 has a flange 25 formed around the mounting hole 1. It can be understood that by providing the flange 25, the flange 25 is used to fix the connection with the outer wall of the voice coil 500, thereby increasing the contact area with the outer wall of the voice coil 500 and improving the connection stability.

[0066] like Figure 4As shown, the folded edge 25 is set at an angle to the axial direction of the mounting hole 1. Optionally, the angle α formed by the folded edge 25 and the axial direction of the mounting hole 1 ranges from 0° to 10°. It can be understood that the folded edge 25 forms a cylindrical structure with open ends around the mounting hole 1. The extension direction of the folded edge 25 along the axial direction of the mounting hole 1 can be parallel to the outer wall of the voice coil 500, that is, the angle formed by the folded edge 25 and the axial direction of the mounting hole 1 is 0°. Thus, the folded edge 25 can be connected and fixed to the outer wall of the voice coil 500 using glue or the like. Of course, in other embodiments, to facilitate the installation and fixation of the voice coil 500 and the centering support 100, the angle α formed by the folded edge 25 and the axial direction of the mounting hole 1 is 2°, 3°, 4°, 5°, 6°, 7°, 8°, 9°, or 10°. This arrangement allows the mounting hole 1 to guide the installation of the voice coil 500, improving installation convenience.

[0067] In this embodiment, the height of the folded edge 25 along the axial direction of the mounting hole 1 can be selected from 5mm to 20mm. This setting can effectively maintain the stability of the connection between the centering support 100 and the outer wall of the voice coil 500.

[0068] In one embodiment, the wave section 2 further has a reinforcing region 26 located between two adjacent mounting holes 1, and the reinforcing region 26 is provided with reinforcing ribs 27.

[0069] In this embodiment, as Figures 1 to 8 As shown, by providing reinforcing ribs 27 within the reinforcing zone 26 formed between two adjacent mounting holes 1 of the centering support 100, the structural strength and structural stability of the centering support 100 are further improved. Optionally, multiple reinforcing ribs 27 may be provided.

[0070] In one embodiment, such as Figures 1 to 8 As shown, the reinforcing rib 27 extends parallel to the line connecting the centers of two adjacent mounting holes 1. It can be understood that by setting the reinforcing rib 27 to extend from one mounting hole 1 to another, the structural strength of the centering support 100 is effectively improved. Optionally, multiple reinforcing ribs 27 are arranged at intervals along a direction perpendicular to the line connecting the centers of two adjacent mounting holes 1.

[0071] In this embodiment, as Figure 5 As shown, in the direction perpendicular to the center line connecting two adjacent mounting holes 1, the cross-section of multiple reinforcing ribs 27 is arranged in a corrugated shape. It can be understood that the reinforcing ribs 27 are formed by bending the reinforcing area 26 of the centering support 100 to form a corrugated structure.

[0072] Of course, in other embodiments, such as Figure 6 and Figure 7As shown, the reinforcing rib 27 is a solid protruding structure 28 protruding from the reinforcing area 26. One side of the multiple solid protruding structures 28 forms a corrugated shape, and the included angle β formed between two adjacent solid protruding structures 28 is 80° to 90°. It can be understood that by setting solid protruding structures, the structural strength of the centering support 100 is further improved.

[0073] Optionally, the centering support 100 may be made of at least one or more of the following materials: cotton, aramid, blended fabric, silk, rubber, and polyester, without limitation.

[0074] The centering support 100 of this application can replace the traditional structure that uses two centering supports to fix the dual voice coils 500, which not only simplifies the structure, but also ensures the axial synchronous movement of the dual voice coils by using one centering support 100, thereby improving the sound quality. At the same time, the corrugated and transverse reinforcing ribs of the centering support 100 not only meet the damping characteristics of the elastic system, but also ensure the stiffness and strength of the centering support 100 when it moves up and down, so that the product meets the practicality requirements.

[0075] like Figure 9 As shown, the present invention also provides a sound generating device, which includes a magnetic circuit system and a vibration system 600 arranged opposite to each other. The vibration system 600 includes a diaphragm 400, at least two voice coils 500 and the aforementioned centering support 100. The specific structure of the centering support 100 is as described in the foregoing embodiments. Since the sound generating device adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here.

[0076] In this embodiment, the diaphragm 400 of the vibration system 600 is arranged opposite to the magnetic circuit system. At least two voice coils 500 are connected at one end to the side of the diaphragm 400 facing the magnetic circuit system and are spaced apart. The end of each voice coil 500 away from the diaphragm 400 passes through a mounting hole 1 of the centering support 100 and is connected to the hole wall of the mounting hole 1.

[0077] Understandably, to further protect the magnetic circuit system and vibration system 600 of the sound-generating device, the sound-generating device also includes a housing for accommodating the magnetic circuit system and vibration system 600. The housing can be a metal housing, an injection-molded housing, or a structure integrally injection-molded with an injection-molded part and a metal part, and is not limited here. In this embodiment, the housing can be a frame with openings at both ends. The periphery of the diaphragm 400 of the vibration system 600 is connected and sealed to one end of the housing, and the magnetic circuit system is connected to the other end of the housing away from the diaphragm 400, so that the magnetic circuit system and vibration system 600 and the housing enclose a vibration space, and the voice coil 500 and the centering support 100 are disposed within this vibration space.

[0078] In this embodiment, to balance the internal air pressure of the vibration space, the magnetic circuit system and / or the housing are provided with airflow holes communicating with the vibration space. It is understood that, to further ensure the normal sound generation of the sound-generating device, the magnetic circuit system is provided with a magnetic gap corresponding to the voice coil 500. Optionally, the vibration system 600 includes two voice coils 500, and the magnetic circuit system is provided with a magnetic gap corresponding to each voice coil 500.

[0079] It should be noted that, in order to ensure the axial synchronous movement of the two voice coils 500 and thus improve the sound quality, a mounting hole 1 for each voice coil 500 to pass through is provided on the same centering support 100. This effectively ensures the axial synchronous movement of the two voice coils 500, reduces the nonlinear distortion caused by the asynchrony of the two voice coils 500 during operation, and at the same time, while meeting the damping characteristics of the elastic system, the centering support 100 also ensures the stiffness and strength of the centering support 100 during its up-and-down movement, making the product practical.

[0080] Understandably, to facilitate the fixing of the centering support 100, a supporting step is provided inside the housing, and the fixing part 3 of the centering support 100 is fixedly supported on the supporting step. Optionally, the fixing part 3 of the centering support 100 and the supporting step can be fixedly connected by adhesive or welding. Of course, in other embodiments, a detachable connection structure can also be provided on the fixing part 3 and the supporting step, for example, the fixing part 3 of the centering support 100 and the supporting step can be connected by snap-fit, plug-in, screw connection or pin connection, etc., which is not limited here.

[0081] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made under the concept of the present invention using the description and drawings of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A centering support, used in a sound-generating device, characterized in that, The centering support has a long axis side and a short axis side, the ratio of the length of the long axis side to the length of the short axis side is greater than or equal to 1.5, the centering support has at least two mounting holes, the at least two mounting holes are spaced apart and both penetrate the centering support, the mounting holes are used for the voice coil of the sound generating device to pass through and be fixed; The centering support includes a spring wave portion and a fixing portion surrounding the spring wave portion. The spring wave portion has at least two mounting holes. The spring wave portion also has a spring wave, which is arranged around the outside of the at least two mounting holes and located between the mounting holes and the fixing portion. The elastic part also has a reinforcing area located between two adjacent mounting holes, the reinforcing area is provided with reinforcing ribs, and the extending direction of the reinforcing ribs is parallel to the center line connecting the two adjacent mounting holes; The number of the reinforcing ribs is multiple, and the multiple reinforcing ribs are arranged at intervals along a direction perpendicular to the line connecting the centers of two adjacent mounting holes; The cross-sections of the plurality of reinforcing ribs are corrugated in a direction perpendicular to the center line connecting two adjacent mounting holes.

2. The centering support as described in claim 1, characterized in that, The spring wave includes multiple spring waves, each located between the mounting hole and the fixing part. From the fixing part to the mounting hole, the multiple spring waves are connected in sequence to form a ripple.

3. The centering support as described in claim 2, characterized in that, The line connecting the highest points of the multiple elastic waves is set at an angle to the plane where the fixing part is located; And / or, the fixing part has a first surface and a second surface that are disposed opposite to each other, the connection point of two adjacent springs forms a lowest point, and the plurality of lowest points and the plurality of highest points of springs are all located above the first surface opposite to the second surface.

4. The centering support as described in claim 2, characterized in that, The spring wave includes three spring waves, which are sequentially named as the first spring wave, the second spring wave, and the third spring wave from the fixing part to the mounting hole; The ripple height of the first wave is the same as that of the second wave; and / or, the ratio of the ripple height of the third wave to the ripple height of the first wave is in the range of 1.3 to 2.0; and / or, the ratio of the difference between the peak heights of the second wave and the first wave to the ripple height of the first wave is in the range of 0.4 to 0.

6.

5. The centering support as described in claim 1, characterized in that, The spring section has a folded edge forming around the mounting hole; The folded edge is set at an angle to the axial direction of the mounting hole, and the angle ranges from 0 to 10°; and / or, the height of the folded edge along the axial direction of the mounting hole ranges from 5 mm to 20 mm.

6. The centering support as described in claim 1, characterized in that, The reinforcing rib is a solid protrusion structure protruding from the reinforcing area. One side of the plurality of solid protrusion structures is corrugated, and the included angle between two adjacent solid protrusion structures is 80°~90°.

7. The centering support as described in any one of claims 1 to 6, characterized in that, The centering support plate is rectangular or racetrack shaped; And / or, the centering support is made of at least one or more of the following materials: cotton, aramid, blended fabric, silk, rubber, and polyester. And / or, the mounting holes include two, and the line connecting the centers of the two mounting holes is parallel to the extension direction of the long axis side; And / or, the shape of the mounting hole is circular, elliptical, irregular, or racetrack-shaped.

8. A sound-generating device, characterized in that, The sound-generating device includes a magnetic circuit system and a vibration system arranged opposite to each other, the vibration system comprising: A diaphragm, wherein the diaphragm is disposed opposite to the magnetic circuit system; At least two voice coils, one end of each of the at least two voice coils being connected to the side of the diaphragm facing the magnetic circuit system, and spaced apart; and As described in any one of claims 1 to 7, the end of each voice coil away from the diaphragm passes through a mounting hole in the centering support and is connected to the wall of the mounting hole.

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