Centering vane, loudspeaker and electronic device

Abstract

The utility model relates to the technical field of electronic equipment, concretely relates to a centering support piece, loudspeaker and electronic equipment. The present application aims at solving the problem that the existing centering support piece leads to acoustic distortion of the loudspeaker and limited signal conversion fidelity because of prone to deformation. For this purpose, the centering support piece of the present application sets the first corrugated structure as an asymmetric structure, which can set the motion guide for the centering support piece in advance, effectively reduces the pulling deformation problem caused by the symmetric corrugated structure in the prior art, enhances the compliance in the working motion of the centering support piece, makes the motion of the centering support piece more linear, thereby effectively improves the acoustic distortion and high harmonic characteristics of the loudspeaker, improves the signal conversion fidelity, and further enhances the sound quality of the loudspeaker, enhances the market competitiveness of the loudspeaker and improves the user experience.

Description

Technical Field

[0001] This utility model relates to the field of electronic equipment technology, specifically to a centering support, a loudspeaker, and electronic equipment. Background Technology

[0002] A loudspeaker is an energy conversion device that converts electrical signals into sound signals. It typically includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm, a voice coil, and a centering support. The centering support provides compliance to the diaphragm, voice coil, etc., to constrain the vibration system to make linear piston-like movements along the axial direction, thereby ensuring the loudspeaker's operational stability.

[0003] Current centering supports employ a symmetrical corrugated structure design. This structure makes it difficult for the centering support to provide sufficient compliant guidance for the diaphragm and voice coil, leading to easy deformation of the centering support during operation. The degree of deformation intensifies with increasing amplitude. This deformation characteristic not only causes acoustic distortion in the loudspeaker but also severely restricts the achievement of high fidelity in electroacoustic signal conversion.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Utility Model Content

[0005] To address at least one of the aforementioned problems in the prior art, namely, the problem that the centering support in the prior art is prone to deformation, leading to acoustic distortion in the loudspeaker and limited fidelity in electroacoustic signal conversion, this application provides a centering support comprising:

[0006] The centering support body has a voice coil hole and at least one protrusion surrounding the voice coil hole. The cross-section of the protrusion is a first corrugated structure, which is an asymmetrical structure.

[0007] In the preferred embodiment of the above-mentioned centering support, the first corrugated structure is a triangular corrugation, which includes an intersecting first connecting edge and a second connecting edge, the first connecting edge being located outside the second connecting edge; at the intersection of the first connecting edge and the second connecting edge, the angle between the first connecting edge and the convex direction of the first corrugated structure is α1, and the angle between the second connecting edge and the convex direction of the first corrugated structure is α2, α1≠α2; or

[0008] The first corrugated structure is an arc-shaped corrugation. The first corrugated structure includes a first connecting edge and a second connecting edge connected by a first arc. The first connecting edge is located outside the second connecting edge. The first tangent line at the connection between the first connecting edge and the first arc and the second tangent line at the connection between the second connecting edge and the first arc intersect. At the intersection, the angle between the first tangent line and the convex direction of the first corrugated structure is α1, and the angle between the second tangent line and the convex direction of the first corrugated structure is α2, where α1 ≠ α2.

[0009] In the preferred technical scheme of the above centering support, α1 < α2.

[0010] In the preferred technical solution of the above centering support, 10°≤(α2-α1)≤30°.

[0011] In the preferred embodiment of the above-mentioned centering support, when the number of protrusions is at least two, the at least two protrusions are arranged sequentially at intervals from the voice coil hole toward the outer edge of the centering support body, and the connection between adjacent protrusions forms a recess, the cross-section of which is a second corrugated structure.

[0012] In the preferred technical solution of the above-mentioned centering support, the second corrugated structure is an asymmetrical structure.

[0013] In the preferred embodiment of the above-mentioned centering support, the second corrugated structure is a triangular corrugation, and the second corrugated structure includes intersecting third connecting edges and fourth connecting edges, wherein the fourth connecting edge is located outside the third connecting edge; at the intersection of the third connecting edge and the fourth connecting edge, the angle between the third connecting edge and the concave direction of the second corrugated structure is α3, and the angle between the fourth connecting edge and the concave direction of the second corrugated structure is α4, where α3 ≠ α4; or

[0014] The second corrugated structure is an arc-shaped corrugation. The second corrugated structure includes a third connecting edge and a fourth connecting edge connected by a second arc. The fourth connecting edge is located outside the third connecting edge. The third tangent line at the connection between the third connecting edge and the second arc and the fourth tangent line at the connection between the fourth connecting edge and the second arc intersect. At the intersection, the angle between the fourth tangent line and the concave direction of the second corrugated structure is α3, and the angle between the fourth tangent line and the concave direction of the second corrugated structure is α4, where α3 ≠ α4.

[0015] In the preferred technical scheme of the above centering support, α3 < α4.

[0016] In the preferred technical solution of the above centering support, 10°≤(α4-α3)≤30°.

[0017] This application also provides a loudspeaker, which includes the centering support described in the preferred embodiment above.

[0018] This application also provides an electronic device, which includes the speaker described in the above preferred solution, or the centering support described in the above preferred solution.

[0019] Those skilled in the art will understand that the centering support of this application, by setting the first corrugated structure as an asymmetrical structure, can pre-set the motion guidance for the centering support, effectively reducing the tensile deformation problem caused by the symmetrical corrugated structure in the prior art, enhancing the compliance of the centering support in working motion, making the movement of the centering support more linear, thereby effectively improving the acoustic distortion and high-order harmonic characteristics of the loudspeaker, improving the signal conversion fidelity, and thus enhancing the sound quality of the loudspeaker, enhancing the market competitiveness of the loudspeaker and improving the user experience.

[0020] Furthermore, by setting the first corrugated structure as an asymmetrical triangular corrugation or an asymmetrical arc-shaped corrugation, the tensile deformation problem caused by symmetrical corrugations in the prior art can be effectively avoided, and the motion compliance and linearity of the centering support during operation can be significantly improved.

[0021] Furthermore, by setting the difference between the second included angle and the first included angle within the range of 10°-30°, it is beneficial to enhance the compliance of the centering support during its working motion, making the centering support move more linearly.

[0022] Furthermore, by setting the second corrugated structure as an asymmetrical structure, the compliance of the centering support during its working motion can be further enhanced, making the centering support motion more linear.

[0023] Furthermore, by setting the second corrugated structure as an asymmetrical triangular corrugation or an asymmetrical arc-shaped corrugation, the motion compliance and linearity of the centering support during operation can be further improved.

[0024] Furthermore, by setting the difference between the fourth and third included angles within the range of 10°-30°, it is beneficial to enhance the compliance of the centering support during its working motion, making the centering support's motion more linear. Attached Figure Description

[0025] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which:

[0026] Figure 1 This is a schematic diagram of a centering support in the prior art;

[0027] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0028] Figure 3 This is a cross-sectional view of the loudspeaker in this application;

[0029] Figure 4 This is a top view of the speaker in this application;

[0030] Figure 5 This is a front view of the first embodiment of the centering support in this application;

[0031] Figure 6 yes Figure 5 Enlarged view at point B in the middle;

[0032] Figure 7 This is a front view of the second embodiment of the centering support in this application;

[0033] Figure 8 yes Figure 7 Enlarged view at point C;

[0034] Figure 9 This is a linear graph of the simulated motion amplitude of the centering support plate in the experimental group;

[0035] Figure 10 This is a distortion curve graph of the speakers in the experimental group and the control group.

[0036] The attached figures are labeled as follows:

[0037] 1. Centering support; 11. Centering support body; 111. First corrugated structure; 112. Second corrugated structure; 1131. First connecting edge; 1132. Second connecting edge; 1133. First arc; 1134. First tangent; 1135. Second tangent; 1136. Second arc; 1137. Third tangent; 1138. Fourth tangent; 114. Voice coil hole; 12. Edge; 2. Basket; 3. Magnetic circuit system; 31. Magnetic gap; 4. Diaphragm; 5. Voice coil. Detailed Implementation

[0038] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0039] It should be noted that in the description of this application, the terms "upper", "lower", "inner", "top", "bottom", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0040] Furthermore, it should be noted that, in the description of this application, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] like Figure 1-2As shown, in the prior art, the centering support 1 includes a centering support body 11 and an edge 12. The edge 12 is disposed around the periphery of the centering support body 11 and is used to connect with the speaker frame 2. The centering support body 11 is provided with a voice coil hole 114 for insertion and connection with the voice coil 5. The centering support body 11 is provided with a plurality of protrusions surrounding the voice coil hole 114, and the plurality of protrusions are arranged sequentially at intervals from the voice coil hole 114 toward the outer edge of the centering support body 11. A recess is formed at the connection of adjacent protrusions. The cross-section of the protrusion is a first corrugated structure 111, and the cross-section of the recess is a second corrugated structure 112. Both the first corrugated structure 111 and the second corrugated structure 112 are triangular corrugations. The first corrugated structure 111 includes a first connecting edge 1131 and a second connecting edge 1132. The first connecting edge 1131 is located outside the second connecting edge 1132, and the first connecting edge 1131 and the second connecting edge 1132 intersect at a point. At the intersection, the angle between the first connecting edge 1131 and the convex direction of the first corrugated structure 111 is α1, that is, the angle between the first connecting edge 1131 and the dashed line aa is α1. The angle between the second connecting edge 1132 and the convex direction of the first corrugated structure 111 is α2, that is, the angle between the second connecting edge 1132 and the dashed line aa is α2. The first connecting edge 1131 and the second connecting edge 1132 are symmetrical with respect to the dashed line aa, that is, α1 = α2. The second corrugated structure 112 includes a third connecting edge and a fourth connecting edge, that is, the connecting edges of two adjacent first corrugated structures 111. In other words, the third connecting edge is the first connecting edge 1131 of the inner corrugated structure 111, and the fourth connecting edge is the second connecting edge 1132 of the outer corrugated structure 111. At this time, in the second corrugated structure 112, the second connecting edge 1132 is located outside the first connecting edge 1131. At the intersection of the first connecting edge 1131 and the second connecting edge 1132, the angle between the second connecting edge 1132 and the concave direction of the second corrugated structure 112 is α3, that is, the angle between the second connecting edge 1132 and the dashed line bb is α3. The angle between the first connecting edge 1131 and the concave direction of the second corrugated structure 112 is α4, that is, the angle between the second connecting edge 1132 and the dashed line bb is α4. The first connecting edge 1131 and the second connecting edge 1132 are symmetrical with respect to the dashed line bb, therefore α3 = α4. Since the dashed line aa is parallel to the dashed line bb, therefore α1 = α2 = α3 = α4. Due to the symmetrical corrugated structure design of the centering support 1, it is difficult for the centering support 1 to provide sufficient compliance guidance for the diaphragm 4, voice coil 5, etc., which causes the centering support 1 to easily deform during operation. The degree of deformation intensifies with the increase of amplitude, resulting in acoustic distortion of the loudspeaker and severely restricting the realization of electroacoustic signal conversion fidelity.

[0042] like Figure 3-8As shown, in order to solve the problem that the centering support 1 is prone to deformation, which leads to acoustic distortion of the loudspeaker and limited fidelity of electroacoustic signal conversion, this application provides a loudspeaker in which the centering support 1 includes a centering support body 11. The centering support body 11 is provided with a voice coil hole 114 and at least one protrusion is formed on it surrounding the voice coil hole 114. The cross-section of the protrusion is a first corrugated structure 111. The first corrugated structure 111 is an asymmetrical structure, which can pre-set the motion guide for the centering support 1, effectively reduce the tensile deformation problem caused by the symmetrical corrugated structure in the prior art, enhance the compliance of the centering support 1 in working motion, and make the motion of the centering support 1 more linear, thereby ensuring the optimization and improvement of the loudspeaker's acoustic distortion and high-order harmonic characteristics, while the signal conversion fidelity is enhanced.

[0043] It should be noted that this application does not limit the number of protrusions, as long as the protrusions are asymmetrical. For example, the number of protrusions can be one, two, or other numbers. When the number of protrusions is two or more, the multiple protrusions are arranged sequentially and at intervals from the voice coil hole 114 toward the outer edge of the centering support body 11.

[0044] The first corrugated structure 111 has two cross-sectional shapes: triangular corrugations and circular arc corrugations. The two configurations of the first corrugated structure 111 will be described in detail below.

[0045] like Figure 3-6 As shown, in one embodiment, the first corrugated structure 111 is a triangular corrugation, which includes an intersecting first connecting edge 1131 and a second connecting edge 1132. In the same first corrugated structure 11, the first connecting edge 1131 is located outside the second connecting edge 1132. At the intersection of the first connecting edge 1131 and the second connecting edge 1132, the first angle between the first connecting edge 1131 and the protruding direction of the first corrugated structure 111 is α1, that is, the first angle between the first connecting edge 1131 and the dashed line a`-a` is α1. The second angle between the second connecting edge 1132 and the protruding direction of the first corrugated structure 111 is α2, that is, the second angle between the second connecting edge 1132 and the dashed line a`-a` is α2. Where α1 < α2, that is, in the same first corrugated structure 11, the first connecting edge 1131 and the second connecting edge 1132 are asymmetrical with respect to the dashed line a`-a`, thereby effectively avoiding the tensile deformation problem caused by symmetrical corrugations in the prior art, and significantly improving the motion compliance and linearity of the centering support 1 during operation.

[0046] It should be noted that the difference between the second included angle and the first included angle is set within the range of 10°-30°, i.e., 10°≤(α2-α1)≤30°. This angle difference predetermines the guiding trajectory of the centering support 1 during movement, aiming to ensure that the voice coil 5... Figure 3 As shown, during downward movement, the centering support 1 is minimized to reduce its resistance to movement, thereby effectively improving its compliance performance.

[0047] See next Figure 7-8 In another embodiment, the first corrugated structure 111 is an arc-shaped corrugation, which includes a first connecting edge 1131, a second connecting edge 1132, and a first arc 1133. The first connecting plate and the second connecting edge 1132 are connected by the first arc 1133. In the same first corrugated structure, the first connecting edge 1131 is located outside the second connecting edge 1132, that is, the first connecting edge 1131 is located on the side of the second connecting edge 1132 away from the voice coil hole 114. The first tangent 1134 at the connection between the first connecting edge 1131 and the first arc 1133 and the second tangent 1135 at the connection between the second connecting edge 1132 and the first arc 1133 intersect. At the intersection, the first included angle of the first tangent 1134 relative to the convex direction of the first corrugated structure 111 is α1, that is, the first included angle between the first tangent 1134 and the dashed line a``-a`` is α1. The second included angle between the second tangent 1135 and the protruding direction of the first corrugated structure is α2, that is, the second included angle between the second tangent 1135 and the dashed line a``-a`` is α2. Where α1 < α2, the first tangent 1134 and the second tangent 1135 are asymmetrical with respect to the dashed line a``-a``. Because the two tangents are asymmetrical, the first arc 1133 is also asymmetrical with respect to the dashed line a``-a``, thus effectively avoiding the tensile deformation problem caused by symmetrical corrugations in the prior art, and significantly improving the compliance and linearity of the centering support 1 during operation.

[0048] It should be noted that in the arc-shaped corrugated structure, the difference between the second included angle and the first included angle is set within the range of 10°-30°, i.e., 10°≤(α2-α1)≤30°. This angle difference can also pre-set the guiding trajectory of the cardiac support plate 1 during movement, aiming to ensure that the voice coil 5... Figure 1 As shown, during downward movement, the centering support 1 is minimized to reduce its resistance to movement, thereby effectively improving its compliance performance.

[0049] Referring then to 3-8, a recess is provided between two adjacent protrusions. The cross-section of the recess is a second corrugated structure 112, which is an asymmetrical structure. By setting both the first corrugated structure 111 and the second corrugated structure 112 in the centering support 1 as asymmetrical structures, the compliance of the centering support 1 during operation can be further enhanced, making the movement of the centering support 1 more linear.

[0050] It should be noted that the number of recesses depends on the number of protrusions. When there are two protrusions, there is one recess. When there are three protrusions, there are two recesses.

[0051] The second corrugated structure 112 has two cross-sectional shapes: triangular corrugations and circular arc corrugations. The two configurations of the second corrugated structure 112 will be described in detail below.

[0052] like Figure 3 , 5 As shown in Figure 6, in one embodiment, the second corrugated structure 112 is a triangular corrugation. The triangular corrugation includes intersecting third and fourth connecting edges, which are the connecting edges of two adjacent first corrugated structures 111. Specifically, the third connecting edge is the first connecting edge 1131 of the inner first corrugated structure 111, and the fourth connecting edge is the second connecting edge 1132 of the outer first corrugated structure 111. In this case, the second connecting edge 1132 is located outside the first connecting edge 1131 within the same second corrugated structure 112. At the intersection of the first connecting edge 1131 and the second connecting edge 1132, the third included angle of the first connecting edge 1131 relative to the concave direction of the second corrugated structure 112 is α3, that is, the third included angle between the first connecting edge 1131 and the dashed line b`-b` is α3. The fourth included angle of the second connecting edge 1132 relative to the concave direction of the second corrugated structure 112 is α4, that is, the fourth included angle between the second connecting edge 1132 and the dashed line b`-b` is α4. Since the dashed line b`-b` is parallel to the dashed line a`-a`, and the fourth included angle α4 is equal to the second included angle α2 in the first corrugated structure 111 located on the outside, and the third included angle α3 is equal to the first included angle α1 in the first corrugated structure 111 located on the inside, α3 < α4. The second corrugated structure 112 works in concert with the first corrugated structure 111, which can significantly improve the motion compliance and linearity of the centering support 1 during operation.

[0053] It should be noted that the difference between the fourth and third included angles is set within the range of 10°-30°, i.e., 10°≤(α4-α3)≤30°. This angle difference predetermines the guiding trajectory of the centering support 1 during movement, aiming to ensure that the voice coil 5... Figure 1 When moving upwards along the axial direction, the centering support 1 is minimized to reduce its resistance to movement, thereby effectively improving its compliance performance.

[0054] See next Figure 7-8In another embodiment, the second corrugated structure 112 is an arc-shaped corrugation, which includes a third connecting edge, a fourth connecting edge, and a second arc 1136. The third and fourth connecting edges are connected by the second arc 1136. Specifically, the third and fourth connecting edges are connecting edges of two adjacent first corrugated structures 111. That is, the third connecting edge is the first connecting edge 1131 of the inner first corrugated structure 111, and the fourth connecting edge is the second connecting edge 1132 of the outer first corrugated structure 111. In this case, the second connecting edge 1132 is located outside the first connecting edge 1131 in the second corrugated structure 112. The fourth tangent 1138 at the connection point between the first connecting edge 1131 and the second arc 1136, and the third tangent 1137 at the connection point between the second connecting edge 1132 and the second arc 1136 intersect. At the intersection, the third angle between the third tangent 1137 and the concave direction of the second corrugated structure 112 is α3, that is, the third angle between the third tangent 1137 and the dashed line b``-b`` is α3. The fourth angle between the fourth tangent 1138 and the concave direction of the second corrugated structure is α4, that is, the fourth angle between the fourth tangent 1138 and the dashed line b``-b`` is α4. The third tangent 1137 and the fourth tangent 1138 are asymmetrical with respect to the dashed line b``-b``. Because the two tangents are asymmetrical, the second arc 1136 is also asymmetrical with respect to the dashed line b``-b``. Since α3 < α4, the second corrugated structure 112 works synergistically with the first corrugated structure 111, significantly improving the compliance and linearity of the centering support 1 during operation.

[0055] It should be noted that in the arc-shaped corrugated structure, the difference between the fourth and third included angles is set within the range of 10°-30°, i.e., 10°≤(α4-α3)≤30°. This angle difference predetermines the guiding trajectory of the centering support 1 during movement, aiming to ensure that the voice coil 5... Figure 1 As shown, during upward movement, the centering support 1 is minimized to reduce its resistance to movement, thereby effectively improving its compliance performance.

[0056] It should be noted that the specific configuration of the first corrugated structure 111 and the second corrugated structure 112 is not fixed, and those skilled in the art can adjust it as needed. For example, both the first corrugated structure 111 and the second corrugated structure 112 may be triangular corrugations, or both may be arc-shaped corrugations. Alternatively, the first corrugated structure 111 may be a triangular corrugation, and the second corrugated structure 112 may be an arc-shaped corrugation. Or, the first corrugated structure 111 may be an arc-shaped corrugation, and the second corrugated structure 112 may be a triangular corrugation. The centering support 1 of the above structures is intended for the voice coil 5 as shown in the figure. Figure 3 When moving downwards or downwards, the centering support 1 is minimized to reduce its resistance to movement, thereby effectively improving its compliance performance.

[0057] See next Figure 3 The loudspeaker is a cone-shaped loudspeaker, which also includes a frame 2, a magnetic circuit system 3, a diaphragm 4, a voice coil 5, and a dust cover. The top of the frame 2 is open, and the bottom has mounting holes, forming an internal cavity. The magnetic circuit system 3 is installed in the mounting holes of the frame 2, and a ring-shaped magnetic gap 31 is formed on it. The voice coil 5 is a ring-shaped structure, with one end suspended in the magnetic gap 31 and the other end connected to the dust cover. The diaphragm 4 and the centering support 1 are coaxially sleeved on the outside of the voice coil 5. The centering support 1 is horizontally positioned, and its edge 12 is connected to the inner wall of the frame 2. The inner side of the voice coil cavity is connected to the outer side of the voice coil. The diaphragm 4 extends obliquely upward along the outside of the voice coil 5 and connects to the open end of the frame 2. When the audio current passes through the voice coil 5, it generates axial vibration under the action of the magnetic field of the magnetic circuit system 3. The centering support 1 provides linear compliance support for the voice coil 5 through the asymmetric corrugated structure, constraining radial offset; the diaphragm 4 vibrates synchronously with the voice coil 5 and pushes the air to produce sound.

[0058] In the exemplary embodiments, this application does not fix the type of loudspeaker; any loudspeaker with a centering support is applicable to this solution. For example, the loudspeaker can also be a planar sound generator, in which case the end of the voice coil 5 away from the magnetic gap 31 is directly connected to the diaphragm 4, meaning that no dust cover is provided in the loudspeaker. In the loudspeaker with this structure, the centering support 1 can still provide linear compliance guidance for the voice coil 5 and the diaphragm 4, avoiding the problem of deformation of the centering support 1 during operation.

[0059] The centering support 1 of this application will be explained in conjunction with the following experiments.

[0060] The only difference between the speakers in the experimental and control groups is the centering support 1; all other components are identical. Specifically, the centering support 1 in the experimental group speaker is as follows: Figure 5 and Figure 6 As shown, the first corrugated structure 111 and the second corrugated structure 112 of the centering support 1 are both triangular corrugations. The perpendicular distance between the intersection of the first connecting edge 1131 and the second connecting edge 1132 in the first corrugated structure 111 and the intersection of the third connecting edge and the fourth connecting edge in the second corrugated structure 112 is 2.6 mm. The corrugation spacing, i.e., the perpendicular distance from the dashed line a`-a` to the dashed line b`-b`, is 5.5 mm. The angle α2 between the second connecting edge 1132 and the dashed line a`-a` in the first corrugated structure 111 and the angle α1 between the first connecting edge 1131 and the dashed line a`-a` is 20°. The angle α4 between the fourth connecting edge and the dashed line b`-b` in the second corrugated structure 112 and the angle α3 between the third connecting edge and the dashed line b`-b` is 20°. α1 = α3, α2 = α4. The centering support 1 in the loudspeaker of the control group is as follows: Figure 1-2As shown, both the first corrugated structure 111 and the second corrugated structure 112 of the centering support are triangular corrugations. The perpendicular distance between the intersection of the first connecting edge 1131 and the second connecting edge 1132 in the first corrugated structure 111 and the intersection of the third connecting edge and the fourth connecting edge in the second corrugated structure 112 is 2.6 mm. The corrugation spacing, i.e., the perpendicular distance from the dashed line aa to the dashed line bb, is 5.5 mm. The second connecting edge 1132 and the first connecting edge 1131 in the first corrugated structure 111 are symmetrical with respect to the dashed line aa. The fourth connecting edge and the third connecting edge in the second corrugated structure 112 are symmetrical with respect to the dashed line bb. The angle between the connecting edge and the dashed lines aa and bb is equal to α1 in the experimental group.

[0061] I. Linear Simulation Experiment of Motion Amplitude

[0062] The linearity of the motion amplitude of the centering support 1 in the experimental group was simulated and analyzed. The results are shown in the figure. Figure 9 As can be seen from the figure, the curves of Coil In and Coil Out are symmetrically distributed at the center line of x = 0 mm, and no obvious nonlinear fluctuations are observed throughout the entire stroke range (-5 mm to 5 mm), indicating that the centering support 1 can provide a stable and predictable elastic restoring force throughout the entire movement process. Therefore, the centering support 1 in the experimental group exhibits excellent linear characteristics of motion amplitude. This linearity and symmetry helps to enhance the compliance of the centering support 1 during operation, improve the acoustic distortion and high-order harmonic characteristics of the loudspeaker, and enhance signal conversion fidelity, thereby improving the sound quality performance of the loudspeaker.

[0063] II. Distortion Experiment

[0064] Distortion experiments were conducted on the speakers in the experimental group and the control group. The results are shown in [the table below]. Figure 10 As can be seen from the figure, within the frequency range of 50-200Hz, the distortion curve of the experimental group speaker is consistently lower than that of the control group speaker. This indicates that the experimental group speaker has lower distortion, purer sound quality, and higher fidelity. Therefore, the centering support 1 of this application can improve the acoustic distortion and high-order harmonic characteristics of the speaker, enhance signal conversion fidelity, thereby improving the sound quality of the speaker, enhancing its market competitiveness, and improving the user experience.

[0065] Furthermore, this utility model proposes an electronic device that includes the sound generator described in any of the above embodiments. It is understood that the sound generator is applied to an electronic device, which can be headphones, a mobile phone, a computer, etc., and is not limited thereto.

[0066] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0067] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A centering support, characterized in that, The centering support (1) includes: The centering support body (11) is provided with a voice coil hole (114) and at least one protrusion is formed on it surrounding the voice coil hole (114). The cross section of the protrusion is a first corrugated structure (111), and the first corrugated structure (111) is an asymmetrical structure.

2. The centering support according to claim 1, characterized in that, The first corrugated structure (111) is a triangular corrugation, which includes an intersecting first connecting edge (1131) and a second connecting edge (1132). The first connecting edge (1131) is located outside the second connecting edge (1132). At the intersection of the first connecting edge (1131) and the second connecting edge (1132), the first angle between the first connecting edge (1131) and the protruding direction of the first corrugated structure (111) is α1, and the second angle between the second connecting edge (1132) and the protruding direction of the first corrugated structure (111) is α2, where α1 ≠ α2; or The first corrugated structure (111) is an arc-shaped corrugation. The first corrugated structure (111) includes a first connecting edge (1131) and a second connecting edge (1132) connected by a first arc (1133). The first connecting edge (1131) is located outside the second connecting edge (1132). The first tangent (1134) at the connection between the first connecting edge (1131) and the first arc (1133) and the second tangent (1135) at the connection between the second connecting edge (1132) and the first arc (1133) intersect. At the intersection, the first angle between the first tangent (1134) and the protruding direction of the first corrugated structure (111) is α1, and the second angle between the second tangent (1135) and the protruding direction of the first corrugated structure is α2. α1≠α2.

3. The centering support according to claim 2, characterized in that, α1<α2。 4. The centering support according to claim 3, characterized in that, 10°≤(α2-α1)≤30°。 5. The centering support according to claim 1, characterized in that, When the number of protrusions is at least two, the at least two protrusions are arranged sequentially at intervals from the voice coil hole (114) toward the outer edge of the centering support body (11), and a recess is formed at the connection of adjacent protrusions, and the cross section of the recess is a second corrugated structure (112).

6. The centering support according to claim 5, characterized in that, The second corrugated structure (112) is an asymmetric structure.

7. The centering support according to claim 6, characterized in that, The second corrugated structure (112) is a triangular corrugation. The second corrugated structure (112) includes intersecting third connecting edges and fourth connecting edges, with the fourth connecting edge located outside the third connecting edge. At the intersection of the third connecting edge and the fourth connecting edge, the third angle between the third connecting edge and the concave direction of the second corrugated structure (112) is α3, and the fourth angle between the fourth connecting edge and the concave direction of the second corrugated structure (112) is α4, where α3 ≠ α4; or The second corrugated structure (112) is an arc-shaped corrugation. The second corrugated structure (112) includes a third connecting edge and a fourth connecting edge connected by a second arc (1136). The fourth connecting edge is located outside the third connecting edge. The third tangent (1137) at the connection between the third connecting edge and the second arc (1136) and the fourth tangent (1138) at the connection between the fourth connecting edge and the second arc (1136) intersect. At the intersection, the third included angle of the fourth tangent (1138) relative to the concave direction of the second corrugated structure (112) is α3, and the fourth included angle of the fourth tangent (1138) relative to the concave direction of the second corrugated structure (112) is α4. α3≠α4.

8. The centering support according to claim 7, characterized in that, α3<α4。 9. The centering support according to claim 8, characterized in that, 10°≤(α4-α3)≤30°。 10. A loudspeaker, characterized in that, The loudspeaker includes the centering support as described in any one of claims 1-9.

11. An electronic device, characterized in that, The electronic device includes the speaker of claim 10, or the centering support of any one of claims 1-9.

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